How does a Hammer Mill Works - Mineral Processing | Hammer Mill Working Animation

How does a Hammer Mill Works - Mineral Processing
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Description:
Hammer mill- The hammers are made
from manganese steel or, more recently, nodular
cast iron, containing chromium carbide, which is
extremely abrasion resistant. The breaker plates are
made of the same material.
The hammers are pivoted so that they can move
out of the path of oversize material, or tramp metal,
entering the crushing chamber. Pivoted hammers
exert less force than they would if rigidly attached,
so they tend to be used on smaller impact crushers
or for crushing soft material. The exit from the mill
is perforated, so that material which is not broken
to the required size is retained and swept up again
by the rotor for further impacting.
This type of machine is designed to give the
particles velocities of the order of that of the
hammers. Fracture is either due to the severity
of impact with the hammers or to the subsequent
impact with the casing or grid. Since the particles
are given very high velocities, much of the size
reduction is by attrition, i.e. breaking of particle on
particle, and this leads to little control on product
size and a much higher proportion of fines than
with compressive crushers.
The hammers can weigh over 100 kg and can
work on feed up to 20 cm. The speed of the rotor
varies between 500 and 3000rev min -~.
Due to the high rate of wear on these machines
(wear can be taken up by moving the hammers
on the pins) they are limited in use to relatively
non-abrasive materials. They have extensive use in
limestone quarrying and in the crushing of coal. A
great advantage in quarrying is in the fact that they
produce a very good cubic product.
Hammer mills have been used by Australian
coking coal producers to prepare coke oven feeds
(0.125-6 mm). To assist in the beneficiation of coke
oven feeds, recent work has led to the development
of a model of the swing hammer mill (Shi
et al., 2003). The energy-based model comprises a
mechanistic model for the mill power draw and a
perfect mixing mill model with a dual-classification
function to describe the operation of the hammers
and underscreen. The model is able to accurately
predict the product size distribution and power draw
for given hammer mill configurations (breaker gap,
under-screen orientation, screen aperture) and operating
conditions (feed rate, feed size distribution,
and coal breakage characteristics).
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[@starkaran8390]

I found very accurate plans on the Stodoys website.

[@himanshujain6174]

Running back word.....feed is going outside .....

[@ahmet-karaca]

this one is not feed grinder. this is feed thrower :) unless you make it turn to the otherside. but good video, make me understand how a grinder works.

[@himanshusrivastav201]

+Remzi KAPLAN 😁

[@khaleedaizzaty8789]

can i know which is more effecient working between hammer mill and ribbon blade?

[@chittaranjanpradhan8930]

clockwise roation or anticlkwse needed

[@himanshusrivastav201]

the rotation is anticlockwise. here it is wrong!

[@mohsinkamal6181]

I have the same hammer pls send me price

[@himanshusrivastav201]

Sorry, but I am not a seller, just a researcher.

[@davidmeza2673]

what software do hoy use feo tus video or animation?

[@himanshusrivastav201]

+David Meza it's Microsoft office PowerPoint 😀

[@deweydodo6691]

running backwards ?

[@chandrachurdmandal5550]

name of the music or link please?

[@himanshusrivastav201]

+Chandrachurd Mandal it is windows 8 music of that time!

[@douglaspohl1827]

Hammers rotation direction is important to reduce wear on the mill walls - the illustration will result in the greatest wear. Good luck!

[@himanshusrivastav201]

Great point!

[@ikennanzewi6583]

very nice sir!

[@himanshusrivastav201]

+Jingo Baggins thank you 😊