Phosphate ore washing and mud removal equipment

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Scrubbing machine and dewatering screen

Among chemical raw material ores, phosphate rock usually requires washing. After the phosphate rock is calcined, it becomes crisp and brittle, but a large amount of calcium and magnesium oxides are still wrapped in the mineral aggregates, hindering the hydration reaction. Simple desludge has no effect. In order to effectively remove calcium and magnesia gangue, scrubbing should be performed while digesting. In this way, the desliming effect is strengthened and the hydration reaction proceeds smoothly. In Canada, almost all potash mineral processing plants have desliming loops to remove very fine insoluble matter. This insoluble material is a mixture of dolomite, hematite and small amounts of clay and anhydrite. Once wet in brine, it dissociates into very fine dispersions. This kind of slime requires multiple stages of high-intensity scrubbing to be completely broken up, and then it can be gradually separated through multiple stages of desliming circuits.

Ore washing can also be an independent beneficiation process that directly produces finished concentrate. For example, the treatment of residual iron, manganese ore and limonite mostly adopts multi-stage washing operations to directly produce the final concentrate or coarse concentrate and send it to the next stage for separation and treatment.

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