Hi M&D. Great video, as always. If I understand your video correctly, as a chemist I can tell you that it depends on where you buy the potassium nitrate. The agricultural one is often impure for KCl and NaNO3. Water of hydration is much more associated with KCl and NaNO3. In my BP productions I use the food type (which by the way is not that expensive). With this type of KNO3 I can produce BP with a burning rate of 80/100 cm / sec (about 40 '' / sec) by balmilling because I produce BP with ball mill. However, this BP has a tendency to absorb water from the humidity of the air, since it sticks to the walls of the jar after 3 hours of grinding. According to Ian Von Maltiz in his book "Black powder manufacturing methods & techniques", this water (about 1%) even favors a fast combustion. Recrystallizing impure KNO3 is a good method: just let the recrystallized dry well. I have seen that your fastest BP is excellent, obviously indicated for launching and bursting charges, the slower one you could use for other preparations where a great burning speed is not needed. Keep in mind that the NaNO3 present as an impurity can color the flame yellow ... but maybe you already know these things :)). In any case, a good video, clear and simple. Greetings from Italy, Alex :))
A lot of knowledge.. I just got the agricultural KNO3 but noticed the slow burn as well. I wonder if the star comps here in America are the same as the ones in Italy they seem to have brighter colors in Italy and German fireworks.
@@Tongan_Boss Hello. From the videos you may not see the colors well, especially the green and blue. I don't know if there is a diversity of colors. A good blue and a good green are obtained using chlorate, but without using magnalium so as to obtain low flame temperatures, of the order of 1200 C. See you soon. Alex.
@@pyroaxcry As you can see, not necessarily The phenomenon of crackle has not been sufficiently studied, but most researchers agree that first one component burns out of the magnalium, then a finely dispersed second component gives a flash. According to this theory, it should work... Besides, I think I've seen this composition in Chinese tables...
I'd rather use glass or even better ceramic marbles than steel ones. Nether of these are the safest like Alumina, hard lead balls, Zirconia media, those are safer I'd say. Do better research for yourself. Stay safe.
recrystalising vid would be fab. for me... to recrystalise anything requires two components. the salt and that salts particular solvent. +air drying. then to recombine the pure, distilled water and more air. helped by very low heat for evaporation. i have no idea what i'm talking about lol. but in my dumb logic it seems to work lol
Sounds like you actually had a moisture issue versus a purity issue. Kno3 will absorb moisture over time decreasing its prefornance. You should dry your kno3 and see if it makes a improvement. This can be done by using a cooking try, spreading it out and cooking off the moisture in a oven or similar.
Not canceling that factor totally, I usually get clumped kno3 in plastic bags from store and works perfect. Not the case on this one, it doesn't feel damp at all. "Baking" would probably increase performance a bit but not solve the issue.
How did you learn how to make fireworks? I’m interested in this. When I get older I’d like to make them too. Do you know where I could find info to make them?
I'd highly recommend you to first understand how basic compositions, like black powder, star composition, etc. work. (Avoid using flash powder for the beginning). You can also watch videos that show the results of what's been made, but please if you're younger ask someone older to join you, safety first pyro :)
@@MakeAndDestroyFireworks I’ve been making fire crackers and other ground based fireworks for years now but can’t get Morters to work have you got any tips
I am really jealous. Where I'm from, I have to extract it out of BP from bought fireworks if I need pure KNO3 for other compositions. While everybody else on YT apparently can just go buy it in the store..
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Hi M&D. Great video, as always. If I understand your video correctly, as a chemist I can tell you that it depends on where you buy the potassium nitrate. The agricultural one is often impure for KCl and NaNO3. Water of hydration is much more associated with KCl and NaNO3. In my BP productions I use the food type (which by the way is not that expensive). With this type of KNO3 I can produce BP with a burning rate of 80/100 cm / sec (about 40 '' / sec) by balmilling because I produce BP with ball mill. However, this BP has a tendency to absorb water from the humidity of the air, since it sticks to the walls of the jar after 3 hours of grinding. According to Ian Von Maltiz in his book "Black powder manufacturing methods & techniques", this water (about 1%) even favors a fast combustion. Recrystallizing impure KNO3 is a good method: just let the recrystallized dry well. I have seen that your fastest BP is excellent, obviously indicated for launching and bursting charges, the slower one you could use for other preparations where a great burning speed is not needed. Keep in mind that the NaNO3 present as an impurity can color the flame yellow ... but maybe you already know these things :)). In any case, a good video, clear and simple. Greetings from Italy, Alex :))
Thanks for commenting Alex, I will do a recristalisation for the inpure one, maybe even for pure one to see the results :)
A lot of knowledge.. I just got the agricultural KNO3 but noticed the slow burn as well. I wonder if the star comps here in America are the same as the ones in Italy they seem to have brighter colors in Italy and German fireworks.
@@Tongan_Boss Hello. From the videos you may not see the colors well, especially the green and blue. I don't know if there is a diversity of colors. A good blue and a good green are obtained using chlorate, but without using magnalium so as to obtain low flame temperatures, of the order of 1200 C. See you soon. Alex.
And now i know what make my BP burn slow. Thank you.
It sticks to the sides like sugar. I don’t know that much though I’m just getting started in fireworks. 🤙🏻
its hygroscopic seems it draws moisture from the air
Hi Make&Destroy,
I want to ask you, do this crackling star composition works ? (66/30/4 - CuO/MgAl/Dextrin)
Thanks
Why not?
@@ChimeraChemLab because you need bismuth trioxide or lead tetraoxide and nc lacquer
@@pyroaxcry As you can see, not necessarily
The phenomenon of crackle has not been sufficiently studied, but most researchers agree that first one component burns out of the magnalium, then a finely dispersed second component gives a flash. According to this theory, it should work... Besides, I think I've seen this composition in Chinese tables...
@@pyroaxcry I agree, the use of dextrin looks strange
@@ChimeraChemLab Yes I see
Hi (again),
Marble made of stainless steel are safe to use in ball mill (are they more safe than glasses ones ?)
Thanks
I'd rather use glass or even better ceramic marbles than steel ones. Nether of these are the safest like Alumina, hard lead balls, Zirconia media, those are safer I'd say. Do better research for yourself. Stay safe.
@@MakeAndDestroyFireworks Hi thanks for your response. But stainless steel is sparkless, so it is a good choice ?
A video on potassium nitrate recrystallization would be great!
recrystalising vid would be fab. for me... to recrystalise anything requires two components. the salt and that salts particular solvent. +air drying. then to recombine the pure, distilled water and more air. helped by very low heat for evaporation. i have no idea what i'm talking about lol. but in my dumb logic it seems to work lol
Sounds like you actually had a moisture issue versus a purity issue.
Kno3 will absorb moisture over time decreasing its prefornance. You should dry your kno3 and see if it makes a improvement.
This can be done by using a cooking try, spreading it out and cooking off the moisture in a oven or similar.
Not canceling that factor totally, I usually get clumped kno3 in plastic bags from store and works perfect. Not the case on this one, it doesn't feel damp at all. "Baking" would probably increase performance a bit but not solve the issue.
How did you learn how to make fireworks? I’m interested in this. When I get older I’d like to make them too. Do you know where I could find info to make them?
I'd highly recommend you to first understand how basic compositions, like black powder, star composition, etc. work. (Avoid using flash powder for the beginning). You can also watch videos that show the results of what's been made, but please if you're younger ask someone older to join you, safety first pyro :)
@@MakeAndDestroyFireworks I’ve been making fire crackers and other ground based fireworks for years now but can’t get Morters to work have you got any tips
Re-crystallization will take care of all your concerns of impurity.
Just ad red phosphorus+ mill extra longer
Im using fertiliser KNO3 (Yara Krista K Plus) - very pure, over 99.5%. After Corning my decent BP is faster than yours fastest one.
75/15/10? 🤔
I am really jealous.
Where I'm from, I have to extract it out of BP from bought fireworks if I need pure KNO3 for other compositions.
While everybody else on YT apparently can just go buy it in the store..
That's how I see other chemicals beside kno3, lol