In the coal mining process, stone powder production line like dolomite powder plant, quartz crushing plant, hammer grinder is used to crush or grind mine ores, stones into powder.
Hammer crusher is suitable for mid-hard and light erosive materials, whose pressure resistance strength is no more than 100Mpa and humidity lower than 15%, such as coal, salt, chalk, gypsum, blocks, limestone, etc.
Hammer grinder mill for dolomite powder plant
Grinding mill is the most widely used dolomite powder production machinery all over the world.
The mined dolomite is subsequently ground using hammer grinder mill, MTM trapezium mill, SCM super thin mill, Raymond mill, MTW trapezium mill to get calcium carbonate powder of the desired specification.
Usually, the dolomite powder has the types: 10 -20 mesh, 20-40 mesh, 40-80 mesh, 80-120 mesh, 140 mesh, 325 mesh, 600 mesh, 1000 mesh, 1600 mesh.
Hammer grinder mill for coal mining
The crushing process of coal:
The big raw coal are fed to the jaw coal crusher evenly and gradually by vibrating feeder through a hopper for the primary crushing. After first crushing, the material will transferred to impact coal crusher or cone coal crusher by belt conveyor for secondary crush; the crushed materials will then transferred to vibrating screen for separating. After being separated, the crushed coal parts that can meet standard will be taken away as final products, while the other coal parts will be returned to impact coal crusher, thus forming a closed circuit. Size of final coal products can be combined and graded according to customer's specific requirement. We can also equip dust catcher system to protect environment.
Hammer grinder mill for quartz crushing plant
Quartz sand production can be divided into two types: dry and wet process production.
Quartz quarry material processed through the jaw crusher to smaller stone, then processed through the sand making machine to sand, and then quartz sand enter the sand washing machine, belt conveyor to transport sand washed into the oven dried machine baked into a dry sand, and then through the vibrating screen screening in the screening process and exclusive use of bar magnet iron magnet, and then repackage finished storage.
Dry quartz sand production cheaper but a lot of impurities, the production of fine quartz sand wet more expensive.
