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- เผยแพร่เมื่อ 21 ม.ค. 2016
- In this short video, I build a kiln from about half straw and half clay and use wood to burn shells (calcium Carbonate) into quicklime (Calcium Oxide), then slake that with water into Calcium Hydroxide. There is a longer how to version of this video here: • BuildCult Ep.1, Seashe...
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Lime is one of the most useful substances ever! It is used in smelting and refining, processing foods like sugar and tortillas, for mortar and plasters, it is the main ingredient in cement. it can be mixed with milk protein for milk paints and cheese glue, it is used in preparing skins for tanning and much more. Lime is not only easy to make from limestone or shells, it's hella fun!
If you want to know all about lime and it's uses in building, read the definitive book, Building With Lime by Holmes and Wingate.amzn.to/1ZHXaMa
Shells or limestone are burned at about 900 Celsius driving off the carbon leaving quicklime (calcium oxide). Water is added to the calcium oxide to slake the lime. It creates lots of heat reacting with the water and changes into calcium hydroxide. Calcium hydroxide will keep indefinitely if stored under a layer of water as "lime putty" and actually improves with age. Once exposed to the air and allowed to dry, the calcium hydroxide turns back into calcium carbonate, which is what we started with, thus completing the lime cycle.
The kiln here is invented by me and based on Michael Smith, Author of The Cobbers Companion's, straw and clay wattle system, which was in turn inspired by a traditional style of clay/straw granary from Mexico. This Kiln is called a PET and is just bundles of straw dipped in clay and laid in coils like a coiled pot. The Furnace has some insulation properties from the hollow grass stems, but also some mass from the clay slip, so it gets hot and stays hot. This can also be done in a metal drum.
Shells or limestone are layered in the kiln with pieces of wood and fired with a free flow of oxygen through the vents in the bottom. It burns naturally at around 900 Celsius or 1650 degrees farenheit. Carbon is driven off the shells or stone leaving calcium Oxide or quicklime. The shells are sorted to discard those that are underburned. Quicklime is very dangerous and highly unstable. When warm water is added, it boils violently as it takes on water to become slaked lime putty, or Calcium Hydroxide. This Lime Putty can be stored under water and will not only keep, but it will improve with age. Masons used to make it and store it for use years later.
When the kiln is burned out, all the ashes, pieces of burned clay from the kiln, bits of charcoal and pieces of burned shell are crushed and added to the garden soil.
For More on lime, visit my website SkillCult.
![CAMPปลิ้น | EP.79[2/2] มานั่งฮ้านกินข้าวนำกันเด้ออ้ายยย](http://i.ytimg.com/vi/pHIS_Sdy8P8/mqdefault.jpg)
I absolutely love the simple way you threw this video together. No over complicated nerdy geeky soliloquies. Everything was self-explanatory because of the way that you filmed it, timing and angles and everything.
This has to be the coolest, most amazing thing I've ever seen. It's difficult to find food grade lime (or even hardware store lime), if not impossible, except online, here in Canada. I live in Nova Scotia and had planned to do some clam digging with my kids. Now I have a use for all those shells! Amazing!!!
Maritimes represent! :D
(NBer here)
5:05 I don’t understand what’s happening but that is so awesome, this whole video is so awesome. You weren’t lying in the beginning
I really don't know the chemistry of that reaction, or I guess why it produces heat. It's cool though!
This is something I actually know!
quicklime (the burnt shells) react with water to form calcium hydroxide. The quicklime reacts with the water, and due to alkali metals like calcium always willing to give away electrons, this creates an immense amount of heat (hence the exothermic reaction). This is why mixing cement can be very dangerous, especially when it makes contact with the skin, as adding water to the cement (which contains lime among other things) creates heat, and can cause chemical burns when in contact with your skin, eyes, respiratory tract, etc.
I love my pickling lime - even just in the kitchen it has endless uses.
Wow I have a pile of oyster shells outside my house next to my bbq. I suppose it's time to put it to use.
Yeah, do it! super fun :)
I just wanna say thanks for going to all the effort to make interesting videos.
+masonmason22 thanks, that's nice to hear!
saw same thing in the anime dr stone in 2019 , loved your passion towards science
I just noticed your views. The first time I saw this was like 1000 or so. Congrats dude getting her going. Now I got study sustainable building tech. THANKS BRO.
Yeah, it's gotten up quite a bit. Nothing like what it should have if people were running across it, but hopefully someday.
Fascinating! I was burning a couple of tons of juniper debris today and stuck a lot of thin, flat limestone pieces into the fire. Once it cools down here in a couple of days I'll see if the calcium oxide reaction happened. Thanks!
That's cool. I probably did. You want to slake as soon as possible and definitely don't let any rain in there. best to dig it out sooner than later. One of the common ways to make lime was in big piles called rick's just alternating layers of wood an shells stacked. It's very inefficient, but it works. No need to use hot water with limestone, just add a bunch of water and if it's well burned it will react quickly.
Love your videos, I searched for how to tan hides after having a discussion with my friend about the zombie apocalypse and how useful thick leather would be to avoid bites
Yeah, human teeth aren't that sharp, better start tanning :)
I'm only 23 years old, but I have this recent obsession with learning about how old societies created basic things purely from nature, and for today I decided to investigate how people of old made soaps. Eventually I ran into confusion because I wasn't sure how you'd get limestone into a fine powder to be created into quicklime in a lye mixture for soaps (There's no way they sat there grinding limestone all day, right?). Then I came across this video, and at 5:45 my question had been answered! I really didn't expect it to just fall apart like that (reminds me of popcorn kernels lol) Thank you so much for sharing!
I got a similar obsession when I was young. Understanding those things and being able to navigate the world understanding them, changes your experience and makes the earth feel more like home. It is just a differnt way of thinking and being. I recommend looking into some primitive skills gatherings. They happen all over the country. The big ones I know of are rivercane in the south, rabbitstick in idaho, acorn and buckeye in california and winter count in the south west. there are more though.
I think this was the first video of yours that I saw. Love this one. The content I was looking for then was definitely in the longer version but this is a well edited teaser that I enjoy watching again. Thank you for all the quality content.
Dude!
You are super talented and awesome! It is super cool that you can make so many things yourself. We all need to be doing things like this.
Thank you and God Bless. :)
Thanks Johnathan. One of my goals is to get as many people as possible up to speed on basic materials and processes so they can adapt and make stuff from scratch. Stay tuned.
literally the best intro
PS making and slaking lime.. IS COOL... AND FUN AND LOOKS COOL!!! and i've been doing it a good few years now and it's always fun and exciting!!!! Give it a go
Great video
This is awesome! Had no idea it was this easy. Well done on the video also; entertaining to watch
+Bike Man Dan yeah, it really is pretty easy!
Good job brother! This video deserves more views
That intro just earned you a sub haha
Thank you for taking the time to share !
You're welcome.
This is a great demonstration.
Thank you. You have a very good channel and a new good video. like
I am building a cob house in NW GA and am planning on lime plastering. Have had a really tough time finding lime that I could use. Called many places, including manufacturers and no one could help, even local concrete and brick supply stores. After this vid I think I found the solution! Thanks so much for the info! Gonna start harvesting rocks around the house that I know are limestone.
That would be so cool :). Good luck. You should look for mineral maps of the area on google. Sometimes you can find very specific records about mineral resources in an area that have already been assessed for quality. You might find an old quarry, or lime kilns, or even an active quarry that will let you take some quality rock by the truckload. I'm not sure how well random limestone will work with impurities and such, but I would certainly try. I a lot of them are high magnesium, but I think they can probably still work well from what I've read.
@@SkillCult that's a good point about "random"limestone. I am not educated enough to know the implications of a higher Mg product. What I will probably do before building a kiln is to burn a couple rocks first, make a small amount of lime plaster, apply a small amount in an inconspicuous place and see how it goes. Again, excellent videos and appreciate those suggestions
gonna teach my kido's this weekend safety safety safety thanks for teaching us so much my friend godspeed and godbless
Steven I don't comment on videos but this video was amazing. Love what your doing with the channel. James
Thank's James. I appreciate that.
This is too frikn beautiful! I particular like the leg-shovel action. Every skill counts : )
+Japanese Earthen Plaster Exchange Ha ha. I'm a big fan of what works!
+SkillCult Hey, what do you know about lime plasters in Japan? A friend told me that thin lime skins are sometimes used over earth plasters. That reaaaalllly intrigues me and could be so useful and lime saving. I'll probably just try it. Mostly I've heard it will crack because of differences in expansion and behavior with weather changes. Almost anyone with experience over on this side of the world is using lime paste from type S lime though.
+SkillCult Notice I call it lime paste, not lime putty :) Pure snobbery.
+SkillCult Often, when they go over an earthen wall with lime, they do a lime-sand-hemp fiber mix, (maybe 3/8" ish?) and then a thin layer of lime and hemp fibers goes over that (maybe 1/8? less?), often polished. The hemp fiber is hair-thin stuff. The lime is calcium-rich, traditionally shell-based from what I know, though they find calcium-rich lime in the hills too. It's mixed with seaweed glue, using an agar-agar type seaweed that gets boiled. The seaweed/hemp/lime concoction can slake for some time. I'm leaving to train in Japan's plaster craft for two years here soon. I'll be getting more details! Please continue asking questions, I'll do my best to find the answers. I'm building a website up www.thejepe.org where we'll post about our experiences. Wish I could have met you while I've been around, I admire what you do. I'm friends with Yoshi, and last time we got together we harvested bay nuts : )
Hi, very nice video. can i ask how long you burnt the limestone for? i am just building my own kiln at the moment and i cant find much information on how long it takes to burn the stone all the way through. kris harbour
With wood stacking the way I do it, you have no choice, you just light it and let it burn. maybe you can top it off one extra time, but it will only affect the top layers of stone if that. The two factors are dwell time and temp. wood will get to the right heat, if there is enough and not over unless you add forced air. but if the pieces are too big, it will take too long for the stone to get hot through. I don't think dwell time (how long it's hot) is that long. If the kiln is small like mine, make the pieces small, like 2 inches or less. All pieces around that size and small calcined fine in this kiln. Watch the longer version of this vid if you haven't yet. Larger wood will increase the burn time too btw. Use some wood up to 2 inches thick in the mix to keep it burning longer. I think you will do pretty well with a ratio of 1/3 stone 2/3 wood, but maybe try 3/4 wood the first run. You don't need hot water to slake the stone, just for shells. Lt me know how it goes!
This was amazing dude! I have searched for just the right thing for me to do at home to make some lime and after 20+ video's this is the one that I was looking for! Well done.
I can do this at home and in a reasnoable amount of time. Other videos were either too small or too large scale for me.
Also your intro was great too!
Awesome. You can use just about any type of container and is like a drum or tube shape. But you will get higher conversion if it has a little mass or insulation or both. Be sure to watch the longer version of this one, I talk a lot more about details.
Awesome. Wondering if the resultant paste is food grade. As a source of calcium for the body. Thanks
Looks fun, looks cool, and looks like something that would look cool,,,
I've made lime via acid-base reactions ,,, yeah, gotta do this too. Thanks Mr.Edholm
Yeah, do it, right up your alley! It's super fun. Do you have shells or limestone?
I got some shells meant for a CO2-generator (acid-based), but I'll need twice as much at least for it to be worth a kiln.
Got plenty of (washed, no/little lye) wood-ash, which I planned to use for the same generator,, was thinking I might try filling steel cans used to store food, pack em' with ashes and blast off.. then wash off, decant, and utilize (if anything as fertilzer. It was it's intended eventual end)
Currently quick-drying loads of flailed willow (no bark, no splitting needed ), big ones as well, meant mostly for biochar (because I can't use firewood as an excuse,,, and I want coal,, and like fire,,, because it's fun,,, and it's cool etc.).... soooo if I scale up the kiln, I'll need more wood.
Ofc, I'll also end up with more ashes,,,, well not much. Got a good stockpile, but no reliable sources I can think of apart from trying to pick more shells. Won't get as much as you though, having half the ocean dead in your backyard
This is just too awesome
You deserve waaaay more subs. Keep it up, eventually one will pop.
thank you. I'm slowly gaining traction.
Congratulations, so far this is the best video I have seen on this subject, entertaining informative and easy to follow even for non English speakers. Thumbs up !!! Now, one easy question, do you think or can you tell us of a way of using the burnt ashes together with the lime to make cement straight from the kiln??? Cheers
I don't know enough about that. Ashes have definitely been used in lime mixes, but I'm not that familiar with what their real properties are. You much more often read about using volcanic ash, diatomaceous earth and brick dust as catalysts. I'd like to explore that stuff more in the future, but so far I haven't got into that. I need to though as I'm always thinking of things I need a hydraulic lime for.
I was just thinking in permaculture terms of less work for some results ... There is a recipe for ancient "geopolymeric" concrete: ash, lime, sand + aggregate + "small" quantities of wall paper glue (or flour as per papier mache) + some sodium bicarbonate and clay. For sensible homestead "controlled" environment possibilities are endless after careful and thoughtful testing. Industry wise, the problem is controlling chemistry to ISO and insurance standards. Regarding the use of the raw combustion results one may encounter same problems with particulate diameter mentioned below in comments besides the ease of use as raw material for other purposes and that using a straight from the kiln mix may be a bit more hazardous. Maybe with careful weighting of fuel/lime good results can be achieved. Once again, lovely job !
One thing I have thought of is that the kiln walls could be used as a pozzolan, Or, extra clay could be burnt along with the shells in a certain ratio, then crushed as pozzolan. The go to reference for this stuff is Building With Lime by Stafford Holmes. He does mention ash, but it's been a while since I stuck my nose in that book. I think there are probably a lot of possibilities that are poorly understood or known. For most people though, barring access to things like diatomaceous earth and volcanic ash, burnt clay may very well be the most accessible homescale pozzolan and could be produced concurrently with the lime. Having access to hydraulic lime would really complete the picture, because anything below ground is not going to hold up very well using this soft fat lime.
I am sorry that I can not give you more thumbs))) I am not a specialist myself but I know that Egyptians used kaolin, and your method may be a good way to substitute. Please try someday and show us, ( I can not, I am trapped in a condo flat) as you say many people around the world have no access to pozzolan, bauxite or aluminum rich soils other than china porcelain and bathroom tiles debris and the latter are not that rich ...
I think some of those may also be overburned for use as pozzolan. My understanding is that you want soft burned brick, like the old style wood fired stuff. That is why burning in the kiln might be effective. I've been meaning to try it, if I do, you'll certainly hear about it. I'm thinking of building a wall right now and would liek to have a hydraulic lime for the portion below the soil, so who knows... I can also buy hydraulic lime from a local business that imports it from France, but it is a natural hydraulic, meaning that the stone already contained the ingredients and it is just burned and used as is. I'm fascinated by the whole subject, but I'm fascinated by a lot of things :) Thanks for your interesting comments.
I've been considering doing this myself, as my basement needs a coat of whitewash pretty soon.
sounds perfect. A little lime goes a long way for lime washing masonry. It is typically applied very dilute, not like paint.
@@SkillCult - Thanks for the reply, my man! I am aware the wash is rather dilute, and usually applied in several layers. I recently bought a 120 year old farm here in Norway, and I can see that it has previously been lime treated. It's important to keep up with the traditional methods :-D Guess I'll have to fill a van load with shells and take them back here. :-D
Sometimes I think, "I'll roll out to California, work with Steven for a week." Then I immediately see myself hauling blanket-loads of straw out of the hills for three days.
ha, proably not that exciting actually. Call me if you're out here though...
SkillCult Only happens every five years and last year the counter reset to zero. See you in 2022 probably.
okay, it's on my calendar....
I always wondered how they did that. I wonder how it was figured out in the first place. You know the coolest stuff.
+Karen Wood I think it must be easy to discover. I mean people expose shells and rocks to fires all the time in various scenarios, so then it's just a matter of observing what happens and putting 1 and 2 and 3 together. Yes, I do know the coolest stuff, that's why I have this channel! ;)
Dope video, learned sm kool stuff wit my childhood fave friend MUD. Nice work old + new
yep, mud :D
That is SO COOL! Thanks!
This is probably the 4th time I’ve watched this. Very cool start to finish.
I attempted this last year - but didn’t make a straw kiln. Had a good hot fire but it was a failure. I think my limestone was in too big of chunks, possibly not hot enough for long enough either.. I went to hammer the limestone into smaller pieces the other day - and inside was petrified ribs and spine from who knows what. The marrow chamber was full of crystals. Guess I need to find some different limestone. I’d like to build my own “pet” too. Just have limited space
Wow, that sounds cool. Yeah, you need to either knock the pieces down to about 2 inches or less, or have larger fuel, so you increase the time the stone is heating. I just smash the stone up with a big rock or something. This system, burned like this will cook 2 inches and down, but better on the smaller side of that. Err on using too much wood at first. You can cut down later.
@@SkillCult I posted a mediocre (at best) video of the fossil I found in the limestone.
Sent pics to a paleontologist and she thinks it’s a hornless rhino that lived in ND 35 MILLION years ago. So cool
Do you find it difficult to separate the quicklime from the wood ash? Could the shells and limestone be placed in a container to keep the ash separate?
I think you would find it difficult to get the heat up. It isn't all that hard to sort if you are not doing huge batches.
Great channel, great video. What a cool kiln !
+Zay Mohead Thanks Zay!
NOW can you make calcium carbide in a primitive way that i would love to see
Best intro ever :)
Wow! I never knew. I must try this as soon as I can. Thank you for the awesome video!!
+River Valley Survival and Bushcraft Great, I want to hear how it goes! You have limestone there?
I will for sure try this.There is a sea food restaurant not far from my house and I find limestone on the River banks, not as pure looking as the stuff you have but it's there. Very cool stuff! I would also like to tan some hide with lime just to try it.
+River Valley Survival and Bushcraft lime is predictable unlike ashes, which is kind of nice. Anyway, it's fun to make! If there is some limestone around, there are probably bigger outcroppings somewhere close by. Sometimes there are maps with local mines, quarries and just outcroppings. Or talk to a local geologist. There are one or two I found out about here, but I think all on private land. Shells are great though if you can get them, they make almost pure calcium lime. Limestone will often contain other stuff, especially magnesium. I don't really think that is always bad, just that shells are a more predictable composition.
Can't wait to see some hide tanning and using lime in the tanning process. Thanks again for the awesome projects.
+River Valley Survival and Bushcraft There is some really basic stuff on lime in tanning on my hide glue liming video. Enough to get started. It only gets more complicated from there...
I dig the editing and the content
Sweet video man!
Wonderful and informative video. Can this lime be used in the garden too to change the ph level of soil?
It can and it used to be used a lot. It's rare to use it now though. Most use ground up limestone rocks that are high in magnesium, aka dolomite lime
Use the wood ash for cover your kiln again. Mix 1 part wood ash, 1 part clay, 1 part sand. It should stand way longer than just clay and straw, plus you will consume less wood to burn the shells.
Maybe I'll try it. This actually seems to provide decent insulation judging from the outside wall temps. This just something anyone can build really fast.
Love the video and you rocked it!
Question, you say you can store it in water. If you wanted to make your own cement, wouldn't you mix it with sand while its dry first and keep it dry, or can you mix it with water, let it dry after the thermogenic reaction, grind it, and THEN mix it with sand for your cement?
If you store it wet, it will settle as a nice thick putty. You can mix that with sand and use it as plaster or mortar As soon as it dries out, it is basically turning to limestone again. The exception is if you slake it just enough to make a dry powdery lime and storer that away from air. You can use that the same way, by adding water to make a putty. but it's easier to make it wet and keep it wet until needed.. It is a little bit too soft to just use as cement like we know cement, but there are other things you can mix it with to make harder cements.
The !!! was well placed
Excellent
4:11 we get it, you vape
Very clever catch!
I've been looking for bulk clam shells on the west coast to do this. I thought it might be cheaper and easier to calcine than limestone. Have you found that to be the case, or were the shells just easier to come by (jealous!). Eventual goal: to heat my house with quicklime by way of solar storage in summer. I know. I think so small.... Great information.
make sure you watch the longer version of this vid if you haven't. Look for oyster bars! If you can find one on the coast near a growing area, you can probably get a truckload.
4.10 😂 so damn cool ✌️
I like it. Very interesting.
What do you do with the final product? Especially regarding survival?
processing foods, most notably corn, plaster and mortar, lime wash (sort of like paint), antimicrobial, liming soils for farming, potentiating alkaloids, as a flux for smelting metals, in leather tanning to remove hair and prepare the hide.
How is all limestone unreacted? Id imagine the moment you mined limestone it would slowly do this? How long did you cook that limestone before you dropped it in the water?
Limestone is the stable, inert form. It will react with strong acids, or slowly with weak acids (look up the formation of stalagtites), but it is basically stable. There is a longer version of this that explains the process and lime cycle better. th-cam.com/video/jOxaOTUGuKo/w-d-xo.html cooking time is dependent on how much mass or thickness there is to the material. It has to be hot enough, long enough. You size the amount of fuel and size of fuel to the amount and size of calcium carbonate, light it and walk away. If you get it right, everything will be calcined enough.
Great video! If you were to slake on the ground, would that change the soil? Would it be carbonized at all?
It would certainly lime the soil, depending on how much you left behind. No carbonization I don't think.
I’m looking into collecting egg shells for this process. By weight, how much of the sea shells were added to the furnace/kiln?
I have no idea. use sticks up to about 1/2 or 3/4 inch for eggshells, the first time, just use a lot more wood. YOu can do it in a double wall stove pipe section or something simple like that Preferably insulated or double wall, but it doesn't have to be.
Does this process work with animal bones? Or does the phosphorus content (dicalcium phosphate) mess that up?
Surely that would be a way to convert old dog bones into excellent soil food, any way?
No, I don't think so. There is a lot of calcium, but a lot of other stuff too and a lot of protein, like collagen. If I not remember right, it's not a good way to get the phosphorous out of bones either.
Awesome!
In this case, did you use both shells and limestone in the kiln at the same time? Does it matter if you combine them? or does stone require more fuel to become calcium hydroxide?
+Lawman212 Good question. I did put them together in that one just to play with that limestone. I don't know a lot about burning limestone because there is very little around here, but I have enough of that stuff to do a load just with the limestone, which I will at some point. If the pieces are bigger, the fire obviously has to burn longer to penetrate. There is a lot of unslaked lime in the lime putty that I slaked from this stone. I think even smaller than 2 inch pieces is probably going to be best in this small mixed fuel set up. Unfortunately, this limestone is really hard to break. In kilns with big pieces of limestone, they burn it a long time, not just mixed and lit like mine is. This video of burning a lime kiln in Hungary is great! I learned a lot about how it might be done on a large scale watching it. th-cam.com/video/ePSO3MrbS0A/w-d-xo.html
+Lawman212 Thanks, I have seen that one as well. I'd like to build a slightly larger permanent kiln and some point and find a source of limestone. I've got plenty of wood.
Why does the shell boil? Is it a chemical reaction or are the shells still hot enough to boil water?
Yes, it's a chemical reaction. The shells are basically cooled off when I start slaking. Limestone doesn't even need hot water to start it, but shells do to kick off the reaction for some reason
How did you make the oister shells white
thanks for the fast reply shocked me! I want make it to normalize field corn for tamales etc with creek clams and to have some lime around. What is the correct way to dry it to make a lime powder. "KingFish" out
I usually get email notifications of comments. Watch the long version of this video too. It can actually be hard to make dry lime hydrate out of shells. Sometimes it works and sometimes it doesn't. Because shells are structurally different, it's not always possible to kick off the reaction without hot water. Even then, it's easy to slow it down. One thing you might be able to do is keep them as quicklime in a tightly sealed jar away from any moisture. That is what Cal used in meso-America for processing corn is actually. There might be a way to consistently produce powdered dry hydrate. If I had to guess it would invovle heating the shells while spritzing them with just enough hot water unitl the powder up. You can't add too much though, just enough to make them into a powder. many times I've tried to do that and it didn't work, but then occasionally it will work.
great videos.
nice video dude
Thanks Leo.
You mafe yourself a new subscriber ;)
Nice video !
Have a good day
I wonder if it's possible to make ash glazes from seashells? For pottery I mean... Further investigation needed!
I think if you research the use of calcium hydroxide or calcium oxide in glazes, you'll find out. I would be surprised if it is not somethimes used in glazes, though it can also essentially melt clay as a flux, so it might cause issues. I've been curious about it for sure, but never looked into it.
thanks again awesome
Awesome Video!!!!! Thanks.. A correction though Lime is used to make 'lime mortar' which can be used to make building mortar, plasters and paints but it IS NOT cement!!! Lime stone is used to make cement but is burned at higher temperatures with additives, typically using approx. 50% MORE energy to produce than building/Type 'S' lime...... Also lime mortars remain permeable/breathable and flexible when cured which cement does NOT... Lime is a very different animal for use in building than cement.. I LOVE IT!
Hi Gail! I dig how you give us the goods : )
+Gail Haddow Thanks Gail. Nice to actually meet someone else that burns lime! I'm clear on the lime is not cement, this just wasn't the place to go into the differences while catering to short attention spans. I did think that lime was used to make portland cement though. So you're saying that cement is made with raw limestone, and after processing calcium hydroxide is not a player? What is it? Calcium oxide, or calcium something-esle-ate? I'm not sure where to draw the line on lime anyway. Nomenclature is confusing. Would you say lime is strictly calcium hydroxide component of any lime preparation or lime-like substance after burning? Dunno, maybe I need to read though building with lime again.
Why doesn't this have more views??
I get that question a lot on my channel in general.
Hey I checked out your website!! Great videos!!! What will the battery acid do fizz?? I have a lot of old batteries here I might be able to drain! What am I looking for a fizz? When I pour acid on the tested rocks??
Yes, exactly. Vinegar may or may not do anything, but a strong acid will fizz. You could also just set up a small burn with small chunks of the rock and scrap wood and see what happens. It may not calcine all the way through,but it might cook the outside enough to slake.
Is all the bubbling from the soaking process or are the shells that hot?
It is boiling from heat produced in the reaction. You can see it in any lime slaking. Crazy.
If you make it like that is it safe to use it for pickling food afterwards?
Yeah, for sure if it's shells. The shells should be very pure and the only other ingredient is wood or woodash. If it's stone, you don't really know what trace minerals might be present, so not sure about that.
@@SkillCult Thanks!
And its gana be fun!
It was :)
does the shells need to be still warm or can they be cold after using the furnace ?
It is okay if they are cold, but don't let them sit around in the air. If you can't slake them, put them in a plastic bag, or an airtight container until you can slake. But when you slake, use very hot water to start them. for some reason, shells are different than limestone and it is harder to get them started slaking. It has something to do with their structure. Once they are going, you can add small amounts of cold water as need to finish. make sure you watch the longer version of this video if you are going to do it.
@@SkillCult sure, safety first right ? anyways thanks for the information. i've been looking for info about it but i couldn't find any specifics without going through years and years of reading material. perhaps someone should make a simple diy book about the ways to do stuff like this.. i bet they would sell well .. maby something about color pigment for painting as well ? i know you use lime to bond the color. anyways enough rambling :P
10 billion percent this is gonna be exhilarating. Just need a big oaf to with unlimited stamina to collect them shells!
I just go to oyster bars, no oafs needed.
may I know the temperature in exhothermic process?
given that it involves water, it is probably just boiling temp, 212º F. Not sure though, and if it is it on the dry side during the process, maybe more or less. dunno.
Can you use any shell, fresh and saltwater?
Yes, and egg shells even..
Hey SkillCult, Where did you get all those shells?
There are oyster farms and lots of oyster bars not too far away, so I drove a truck down there and went around to the bars and filled up the truck as much as I could fit.
So cool......Your videos are amazing...!
+GFD472 thanks!
@@SkillCult I want to try a smaller kiln 'cause I just want 1 kg of quicklime and I don't have alot of space. Do you think a tiny kiln like with an outer volume of 5 liters can work? or something like 30cm high, 15 cm diameter. ideas?
@@davemwangi05 It might work if you used very thin, tiny shells. Maybe egg shells. But you still might not get the dwell time you need. it not only has to get hot enough, but it has to stay hot long enough. I've done egg shells, mixed with nut shells, in an 8 inch stovepipe, about 3 feet tall and that worked fine.
@@SkillCult mine is a really big twist, with lots of changes. Firstly, since I'm far from the coastline so I don't have access to shells or limestone. I've conducted smaller tests with wood ash, I know it's a crazy twist but, Lol, look. First washed off of all potassium and sodium salts from woodash, as you know Calcium Carbonate is present in wood ash and it isn't soluble. so it'll be left behind.
then I made a pastry thing out of it and cast it into thin slices exactly like size of a coin, and dried them. Using a bunsen burner I was able to heat the slices until the edges were white hot and turn them into quicklime. Sure because upon testing by slaking, the samples from edges got very hot upon adding cold water, the center of the slices fail to calcine.
So there we go. this thing is possible. I wanna fire the kiln with butane instead of wood, I'm guessing the additional shielding will help all the slices convert since I was able to partially achieve it with an open flame. Thicker blocks on a burnsen completely failed to calcine, that's why I tried slices. I'd like to hear your advice, possible bottlenecks etc. Thanks for your reply.
@@davemwangi05 With butane, you should be able to do any size as long as it is set up so that it heats everything through. I know there is a lot of calcium in wood ash, I remember it being in the neighborhood of 30%, which is not anything near a shell, which is near 100% I think. Mind the temps though. wood is pretty much self regulating temp wise, but it's probably not hard to get it too hot using a gas and air mix. In fact, white hot may be too hot.
Hey this is awesome! I found some limestone on my homestead! Thanks for the video I want to do something similar but I'm going to dig out a Dakota firepit and possibly use old tires to fire the kiln! How long would I have to heat the limestones!? Can you please give me advice on heating times?
Break it up small the first time around, like 2 inches and down, but still in chunks. The factors are temperature and dwell time. Or how hot it gets and how long it stays hot. If you are using a kiln where the fuel and limestone are mixed, you'll have to just fire it and let it go pretty much. You can add fuel and stone from the top and change the ratio, but it's not really going to fire the stuff on the bottom more. Using a dirty petroleum fuel like that might contaminate the lime, I'm not sure. I've heard that coal can. If you have wood, I'd use it. It's known to make high quality clean lime. It also only burns so hot unless you force air into it, so it won't exceed the maximum temp, because it is possible to overburn. I'd start with about 1/4 lime to 3/4 wood, make sure it's working, then tweak the wood quantity down from there. Good luck, it's super fun.
And it looks cool!
Also, watch the longer version of this video here on youtube for sure and if you want to geek out more, go to the skillcult.com site and search for lime for more articles.
Hey is there a method to test for lime or a website or can I send you some photographs of the rocks I think might contain lime? I live out in the boondocks and I can't get to vinegar and the hydrophloric solution for a week and I'm dying to know if I have limestones!!
I probably could only say that it looks like it might be., not for sure. Got pickles in the fridge maybe? vinegar is not as reliable in my limited experience. What about battery acid? Most batteries are sealed now though.
I like this
For how long do u have to burn it?
It is more about setting up the proportions of wood to shells and then you just let it finish burning.
Dark souls fans are really excited about this vid
Do you have to mix with water to make a cement?
Some limes set without drying, like concrete does. This is already wet and is almost pure calcium, so it will not set underwater, though some limes will if they contain other substances or if a pozzolan is added. so, with regular high calcium limes like this, the lime has to dry to cure which is why you can keep it under water. If mixed with sand and whatever additions of water are necessary, you can make mortar and plaster, but high calcium lime is too soft for making what we know as concrete. For that you need pozzolans too. However, harder is not always better and high calcium soft limes have properties such as flexibility and self healing that make them better in some ways for traditional masonry work. Hope that makes a little bit of sense at least.
+SkillCult // thank you
This is extremely well shot and documented. wow. i held my breath everytime the cam was over the smoke. you might want to start a non profot teaching kids outdoor old world skills. are you saying the lime is in tortillas and we eat it?
+Raychristofer Thanks! I'm too busy to start anything! :)
Awesome! how long do you burn the shells? ty
If you use wood, and use the right proportion, it takes care of itself. for larger material, you have to use enough wood and enough larger pieces to increase the dwell time (how long it stays hot). Shells are easy though. Just use a lot of wood, light it and it's all good.
Cool and fun lmao yaaa shout thattt
That is a 10 billion percent chance of being cool.
and fun...
dude that is awesome if you mixed that and your carbon coal together holy wow the plants would jump out of the dirt too grow lol lol
Damn! How did you made fireproof furnace out of straw. That's real money ..lol
I know right? It's weird, but it's just enough clay to work!
sir did burning sea shells will give you a quicklime? answer me please it's for my educational purposes
Yes, burning any kind of shells will yield quicklime.
sir we tried to used mussel and we burnt it using a simple grill but it ended up to a white like scale(it's so brittle) and when we tried to mixed it with water, nothings happen :(
if we use HCL instead of burning mussels will it gives a same result? :(
Define HCL
Good for you for trying! It's easy, you just have to get a couple of things right. The important factors are how hot the shell gets and how long it stays hot. Mussel shells will be pretty easy because they are thin. The heat up quickly all the way through and don't have to stay hot for as long. The shells have to become red hot all the way through for a period of time. This usually requires a closed container like a barrel. Cut out the bottom of a metal drum and leave air tunnels at the bottom for air to get in. Light it from the bottom and use at least 2 parts wood to one part shells the first time. Stack it in layers like I do in the video. Sort out the shells that are white all the way through and add boiling hot water to them, but not too much water at first. did you watch the long version of this video? it has much more information. th-cam.com/video/jOxaOTUGuKo/w-d-xo.html
Can you get lime from eggshells
Yes. I have them saved to do a video. You can use any tall can, like a piece of stove pipe or some of the big food cans that are like 6 inches across stacked should work. Layer sticks and shells till full and light from the bottom.
@@SkillCult thanks for the advice and clarification im probably going to do that soon. Gonna try a cement mix with lime wood ash and clay
got enough room on that land for a apprenticeship
that's in the master plan. Probably on the next property though.
Yea, cool a modern day viking , with a small v, using an electric paddle mixer. Got your rubber booties stomp on the darn thing!
Multiday project as it was, I had to cut corners. You're welcome.
Perfect for yopo
There are a bunch of plants that are potentiated by lime or other alkalis. Of course this would be nice and clean form. 🤘
Senku WaNtS tO kNoW yOuR lOcAtIoN
I tried putting seashells in a small campfire and it didin't work im guessing its because it didin't get hot enough
Try throwing the shells on the coals, add quite a bit of small and medium wood, more shells, more wood etc. You might get them to calcine. the smaller the shells the more likely it will work. You may also get partial calining. Also, use hot water when you slake and just a little at a time. Shells are harder to slake than limestone.
You can tell if it's burnt enough usually because it will be white, or maybe just the core of the shell will be black or grey because it's not quite finished.
@@SkillCult thanks for the tips
@@SkillCult yes they were grey from the inside