Hammer mills for fine pulverizing and disintegration are operated at high speeds. The rotor shaft may be vertical or horizontal, generally the latter. The shaft carries hammers, sometimes called beaters. The hammers may be T-shaped elements, stirrups, bars, or rings fixed or pivoted to the shaft or to disks fixed to the shaft. The grinding action results from impact and attrition between lumps or particles of the material being ground, the housing, and the grinding elements. A cylindrical screen or grating usually encloses all or part of the rotor. The fineness of product can be regulated by changing rotor speed, feed rate, or clearance between hammers and grinding plates, as well as by changing the number and type of hammers used and the size of discharge openings.
Additional grinder construction features
- Fabricated from heavy 3/4” steel plate, all weld construction.
- Internal, replaceable breaker wear plate made from 1” thick AR-500 steel. Replaceable side liner plates made from 3/8” abrasion resistant steel.
- Rotor shaft machined with a barrel larger than that of any competitor, and warranted for FIVE full years against breakage.
- Heavy duty abrasion-resistant bar grate available in many sizes to produce the exact finished particle size you desire.
- Safety interlock package prevents mill from operating when mill is in an open position for maintenance.
- Mill top hinges open hydraulically for easy access to the mill’s interior for maintenance and inspection.
Application of hammer mill
Hammer Mills is a close-clearance, screen discharge, high-speed, controlled sealed-feed hammer mill used for a wide range of nonabrasive materials, the major applications being sugar, carbon black, chemicals, pharmaceuticals, plastics, dyestuffs, dry colors, and cosmetics. For performance see Table 20-21. Speeds, types of hammers, feed devices, housing variations, and perforations of screens are all varied to fit applications, with the result that finenesses and character of grind cover a wide range. Some of the grinds are as fine as 99.9 percent through a 325- mesh screen. Feed material should usually be down to 4 cm (1a in) or finer. If feed is larger, an auxiliary crusher may be required, preferably as a separate unit, because synchronization is difficult since the crusher has larger capacities than the pulverizer. Tie-in is possible with careful regulation of relative speeds of crusher and feed screw or screws.
Technical Data of Hammer Crusher:
|Model||Input size (mm)||Output size (mm)||Capacity||Power||Weight(t)|
|PC 400×300||＜100 mm||＜15 mm||5-10 TPH||11 Kw||0.8|
|PC 600×400||＜220 mm||＜15 mm||10-25 TPH||22 Kw||1.5|
|PC 800×600||＜350 mm||＜15 mm||20-50 TPH||55 Kw||4.7|
|PC 800×1000||＜400 mm||＜15 mm||20-75 TPH||110 Kw||7.9|
Notice: Any change of hammer crusher technical data shall not be advised additionally.
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