Vertical roller mill for efficient pulverization of various materials
The typical Raymond® bowl mill system is designed to simultaneously dry, pulverize, and classify solid fuels to 95% passing 200 mesh (<5%R75μ) with a wide range of capacities from 24 to 150 stph.
Wide range of capacities – base capacities from 8 to 150 tph.
Easily adjustable fineness – externally adjustable classifier permits selection of fineness from 70% to 95% through 200 mesh without stopping the system.
High turndown ratio – system allows safe, easy, instantaneous adjustment of capacity without affecting fineness, with a turndown ratio up to 5 to 1.
Quiet, smooth operation – design insures no metal-to-metal contact between grinding rolls and ring, fuel grinds on fuel. This results in smooth, vibration-free operation with low noise levels.
Handles variety of fuels – accepts bituminous, sub-bituminous and lignite coals and petroleum coke with initial moisture content as high as 40% for lignites.
Flexibility – available with both dynamic and static classifiers, spring or hydraulic journal loading, designed to operate efficiently in direct and indirect solid fuel firing systems