Hammer mill for sale


Hammer mills work on the principle that most materials will crush, shatter, or pulverize upon impact using a simple four step operation:

1. Material is fed into the mill’s chamber typically by gravity.

2. The material is struck by ganged hammers (generally rectangular pieces of hardened steel) which are attached to a shaft which rotates at a high speed inside the chamber. The material is crushed or shattered by the repeated hammer impacts, collisions with the walls of the grinding chamber as well as particle on particle impacts.

3. Perforated metal screens, or bar grates covering the discharge opening of the mill retain coarse materials for further grinding while allowing properly sized materials to pass as finished product.

4. Hard, heavy materials such as glass, stone or metals exit the mill via gravity. Pneumatic suction us used to assist in the discharge of lighter materials such as wood, paper or other low bulk density products.

Varying the screen size, shaft speed or hammer configuration can dramatically alter the finished size of the product being ground. For example, faster speed, a smaller screen, and more hammers result in a finer end product. Each component can be changed individually or in any combination to produce the precise grind required. All of this is determined by taking advantage of our free test grinding service.

Hammer Mill Configuration With this information, the following can then be determined:

Hammer mill size - Rotor diameters between 6" and 44", and internal mill widths of 6" to 72".

Hammer size and style - Number of hammers, size, style and metallurgy.

Screens or bar grates - Style and thickness of screen or bar grates, and size of openings.

Finally, once the mill is configured, the last determination is whether or not any optional peripheral equipment is needed. Answers to these questions will help to determine the best types of optional equipment such as belt conveyors, augers, rotary feeders, and dust collection, as well as the most efficient design of the infeed and discharge chutes

Is dust a concern?

How will the material be fed into the mill? By hand, auger, or belt conveyor?

How will the material be taken from the mill? Heavy materials such as stone or metal may evacuate via gravity, while light or low density materials will require pneumatic suction.

Hot Products

Crusher machine is SBM Machinery's special equipment type, it can take the functions of the above machines together in order to make a more convenient products experience.

Request for Quotation

You can get the price list and a SBM representative will contact you within one business day.