In the coal mining, crushing process, hammer crusher is used to crush and grind coal into powder.
The
hammer crusher (hammer mill) crushes by the collisions between high-speed hammer and material, and the hammer crusher (hammer mill) has the features of simple structure, high reduction ratio, high efficiency, etc. The PC hammer crusher (hammer mill)is developed for both dry and wet crushing of brittle, medium-hard materials for the mining, cement, coal, metallurgic material, construction material, road building, and petroleum & chemical industries.
Hammer crusher used for coal mining
Coal is a readily combustible black or brownish-black sedimentary rock normally occurring in rock strata in layers or veins called coal beds. Coal has very wide using fields in our daily life. SBM crushers and grinding mills are neccssary equipments in coal processing.
Coal Crushing and Grinding Process
If the coal block is bigger than the mill's max input size, it must be crushed before grinding. The crushing plant common includes Vibrating feeder as feeding material to jaw crusher, which is as primary jaw crusher. If need secondary crusher, Cone crusher or Impact crusher can be used. After primary crushing, the coal can be feeding to Ball mill to fine grinding. To increase Ball mill effective, the vertical coal mill or coarse powder mill can be setted before Ball mill as pre-grinding.
Tons of Blocks of solid coal are carried by truck to an existing coal stockpile. Coal is reclaimed using vibratory feeders, in a reclaim tunnel. The vibrating feeders load the coal onto a reclaim vibrating conveyor that transfers the coal into the coal crusher station.
Initial coal processing is conducted through the rotary crusher when coal is sized to minus 500 millimetres. The coal is sized on a vibratory screen at 19 millimetres. Oversize material, mainly rock, is conveyed to an on-ground storage place and then trucked to the existing coarse reject disposal facility.
SBM features advanced CAD and computer simulation test system, which ensures the quality of design, development, manufacturing and after-sale service. The company has formed a complete production-chain that takes crushers and mills as the main products and vibrating screen, vibrating feeder, etc. as supplementary products.
