Roll crusher with its unique crushing principle . It has become the core equipment for medium and fine crushing in mineral processing industry. Flexible particle size control and low over-crushing rate. Roller crusher has high precision of crushing size control. The roller gap is adjusted by hydraulic or wedge device (1-50mm adjustable), the discharge size is uniform (e.g. 1-5mm sand). And the over-crushing rate is lower than that of the impact crusher. Roll crusher squeeze crushing reduces the subsequent grinding energy consumption by 15-30%, and the processing capacity is up to 1-400t/h (large fully hydraulic model supports 10,000 tonnes per day production).
The following are its specific applications and technical characteristics in the field of mineral processing:
Metal Ore Processing
Rough crushing followed by medium crushing: located after the jaw crusher, it crushes the ore to the size range of 1-10mm, preparing for subsequent grinding or sorting.
Tungsten and Tin Ore Beneficiation: In the combined process of ‘Roller Crusher + Jigger + Shaker’, the Roller Crusher controls the size of the discharged material (10-30mm), reduces over-crushing, and improves the efficiency of gravity sorting.
Iron ore/non-ferrous metals: It is suitable for medium and fine crushing of copper, lead, zinc and other ores, ensuring uniform particle size and reducing energy consumption for grinding.
Non-metallic ores and industrial minerals
High purity minerals: zirconia roll crusher (Mohs hardness 8.5-9) processing quartz, feldspar, fluorite, etc., to avoid metal pollution, to protect the purity of lithium ore, ceramic raw materials.
Raw materials for building materials: crushing limestone and gypsum to 0.5-5mm for cement and gypsum board production; crushing phosphate rock to the required size for fertiliser.
Corrosion-resistant scenario: zirconia rollers are adapted to acid and alkaline environments (e.g. rare earth ores, chemical raw materials). With a life span of 3-5 times that of steel rollers.
Coal and energy field
Coal washing plant: crushing raw coal to ≤13mm, improving the appearance quality of coal and the recovery rate of refined coal; through the screening-crushing closed-circuit system, the refined coal output can be increased by 30%.
Circulating fluidised bed boiler: four-roll crusher crushes furnace coal to ≤10mm, replacing the traditional secondary crushing system.
Tailings and Recycling Treatment
Tailings re-selection: Crushing tailings to recover valuable minerals and reduce the volume of tailings.
Construction waste/metallurgical slag: full hydraulic roll crusher processes concrete blocks and industrial waste to achieve resource utilisation.
