Hammer Mill Crusher

A hammermill crushes material that is friable, by impacting it against a rotating hammer (typically traveling between 750 RPM and 1800 RPM). Then the material is forced against a rugged solid plate called a "breaker plate" which further degrades the particle size. Finally, the material is forced over a discharge grate by the hammers, where crushed finer particles drop through the discharge grate and larger particles travel around for another crushing cycle, until they fall through the discharge grid. During the entire time the material is traveling around in the hammermill it is constantly being impacted by the hammers, and the side of the mill casing, causing breakage of the particles. This sequence repeats itself between 750 - 1800 times each minute, until the particle is ground fine enough to fall through the discharge grid.
One big drawback to hammermills is they wear, due to the abrasiveness of the material being crushed and the high speed of the mill. It should not be used to grind any material harder than a medium hard limestone. They are used most in crushing coal, but are also common in limestone operations. Large particles can not usually be crushed in hammermills, so they are almost never used for run of mine material or primary crushers, but secondary or tertiary crushers. Six to eight inches is a typical top size of feed for hammermills.
Another possible drawback for using hammermills, is that they tend to produce a lot of fine material (50 mesh to -100 mesh). Crushers like jaw crushers, cone crushers, and roll crushers, which operate a much lower speeds, tend to produce very few fines (generally less than 1% finer than 50 mesh). For some processes, excess fine material is a drawback, for others, it is not a problem.
On the positive side, hammermills are relatively inexpensive, as crushers go, can produce relatively fine material (1/4" to -10 mesh) from 6" or 8" feed in one step, and they take up relatively little floor space. The are easily repaired, and simple to operate. Production size hammermills can produce products ranging from 1" to as fine as 10 mesh, or finer, depending upon the material being crushed.

mining equipment , mining spare parts , mining parts , sand mining equipment , sand mining , crusher spare parts , crusher spares , crusher parts , crusher wear parts , impact crusher spare parts , impact crusher parts , impact crusher wear parts , jaw crusher spare parts , jaw crusher parts , jaw crusher wear parts , cone crusher spare parts , cone crusher parts , cone crusher wear parts , hs impact crusher spare parts , hs impact crusher parts , hs impact crusher wear parts , horizontal shaft impact crusher , horizontal shaft impactor , impactor wear parts , vertical shaft impact crusher , vertical shaft impactor , vs impact crusher spare parts , vs impact crusher parts , vs impact crusher wear parts , impactor parts , screen spare parts , screen wear parts , screen parts , feeder spare parts , feeder wear parts , feeder parts , conveyor spare parts , conveyor wear parts , conveyor parts , sand maker spare parts , sand maker spares , sand maker wear parts , sand maker parts , kubit impact crusher , kubit wear parts , kubit spare parts , kubit parts , hs impact crusher , hs wear parts , hs spare parts , hs parts , parker impact crusher , parker wear parts , parker spare parts , parker parts , goodwin impact crusher , Goodwin wear parts , Goodwin spare parts , goodein parts , hazemag impact crusher , hazemag wear parts , hazemag spare parts , hazemag parts , vs impact crusher , vsi wear parts , vsi spare parts , vsi parts , sand maker impact crusher , sand maker wear parts , sand maker spare parts , sand maker parts , cone crusher , hydro cone crusher , hydro cone wear parts , hydro cone spare parts , hydro cone parts , hydrocone crusher , hydrocone wear parts , hydrocone spare parts , hydrocone parts , jaw crusher , conveyor , conveyor accessories , conveyor components , elevator , elevator accessories , elevator components , elevator wear parts , elevator spare parts , elevator parts , mining screen , mining screen wear parts , mining screen spare parts , mining screen parts , feeder , impact crusher hammer , impact crusher hammer arms , impact crusher protection plates , impact crusher breaker bars , impact crusher breaker plates , impact crusher breaker plate liners , impact crusher breaker liners , impact crusher liner plates , impact crusher side liners , impact crusher rotor , impact crusher main shaft , impact crusher shaft , impact crusher bearings , impact crusher bearing housing , impact crusher impact plate , impact crusher impact rack , impact crusher spring , impact crusher blow bar , impact crusher impact plate bolt , kubit hammer , kubit hammer arms , kubit protection plates , kubit breaker bars , kubit breaker plates , kubit breaker plate liners , kubit breaker liners , kubit liner plates , kubit side liners , kubit rotors , kubit main shafts , kubit shaft , kubit bearings , kubit bearing housings , kubit impact plate , kubit impact rack , kubit spring , kubit blow bar , kubit impact plate bolt , hs hammer , hs hammer arms , hs protection plates , hs breaker bars , hs breaker plates , hs breaker plate liners , hs breaker liners , hs liner plates , hs side liners , hs rotor , hs main shaft , hs shaft , hs bearings , hs bearing housing , hs impact plate , hs impact rack , hs spring , hs blow bar , hs impact plate bolt , parker hammer , parker hammer arms , parker protection plates , parker breaker bars , parker breaker plates , parker breaker plate liners , parker breaker liners , parker liner plates , parker side liners , parker rotor , parker main shaft , parker shaft , parker bearings , parker bearing housing , parker impact plate , parker impact rack , parker spring , parker blow bar , parker impact plate bolt , goodwin hammer , goodwin hammer arms , goodwin protection plates , goodwin breaker bars , goodwin breaker plates , goodwin breaker plate liners , goodwin breaker liners , goodwin liner plates , goodwin side liners , goodwin rotor , goodwin main shaft , goodwin shaft , goodwin bearings , goodwin bearing housing , goodwin impact plate , goodwin impact rack , goodwin spring , goodwin blow bar , goodwin impact plate bolt , hazemag hammer , hazemag hammer arms , hazemag protection plates , hazemag breaker bars , hazemag breaker plates , hazemag breaker plate liners , hazemag breaker liners , hazemag liner plates , hazemag side liners , hazemag rotor , hazemag main shaft , hazemag shaft , hazemg bearings , hazemag bearing housing , hazemag impact plate , hazemag impact rack , hazemag spring , hazemag blow bar , hazemag impact plate bolt , sand maker hammer , sand maker hammer pin , sand maker protection rotor , sand maker breaker bars , sand maker breaker plates , sand maker breaker plate liners , sand maker breaker liners , sand maker liner plates , sand maker side liners , sand maker rotor , sand maker main shaft , sandmaker shaft , sandmaker bearings , sand maker bearing housing , sand maker impact plate , sand maker impact rack , sand maker spring , sand maker blow bar , sand maker impact plate bolt , sand maker flange , hydrocone main shaft , hydrocone main shaft sleeve , hydrocone head nut , hydrocone head center , hydrocone dust collar , hydrocone dust seal ring , hydrocone dust seal retainer, hydrocone eccentric bushing , hydrocone eccentric , hydrocone bottom bushing , hydrocone gear , hydrocone eccentric wear plate , hydrocone eccentric support plate , hydrocone main step plate , hydrocone step washer , hydrocone piston wear plate , hydrocone hydroset bushing , hydrocone hydroset piston , hydrocone hydroset cylinder , hydrocone hydroset seal , hydrocone clamp plate , hydrocone spider cap , hydrocone spider arm shield , hydrocone spider bushing , hydrocone spider oil seal , hydrocone scraper ring , hydrocone spider , hydrocone mantle , hydrocone concave ring , hydrocone top shell , hydrocone shell bolt , hydrocone bottom shell , hydrocone dust collar gasket , hydrocone arm liner , hydrocone sheave , hydrocone lock out spacer , hydrocone pinion shaft oil seal , hydrocone pinion shaft bearing , hydrocone pinion shaft housing , hydrocone pinion shaft , hydrocone pinion end , hydrocone pinion , jaw crusher protector bolts , jaw crusher protector , jaw crusher wedge , jaw crusher check plate , jaw crusher check plate bolts , jaw crusher fixed jaw plate bolts , jaw crusher frame , jaw crusher fixed jaw plate , jaw crusher movable jaw plate , jaw crusher toggle seat , jaw crusher toggle plate , jaw crusher tension rod , jaw crusher fly wheel , jaw crusher bearing , jaw crusher main shaft , jaw crusher wedge bolts , jaw crusher swing jaw , jaw crusher toggle block , jaw crusher shim plate , jaw crusher tension spring , screen spring , screen intermediate shaft , screen flexible coupling , screen exciter component , screen frame , screen damping spring , screen sieve , screen mesh , steel screen mesh , metal screen mesh , conveyor belt , rubber conveyor belt , conveyor roller , conveyor rollic , conveyor idler , conveyor troughing idler , conveyor return idler , conveyor tail pulley , conveyor head pulley , conveyor drive pulley , conveyor roller bracket , conveyor idler bracket , conveyor gearbox , conveyor gear