Methods for dewatering coal and mineral concentrates

Details Methods for dewatering coal and mineral concentrates Methods for dewatering coal and mineral concentrates

1990-10-30

1992-02-18

Hruskoci, Peter

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

209 5, 210729, 210778, 210787, C02F 138

Patent

active

050891421

ABSTRACT:
A method and composition for dewatering coal and mineral slurries by centrifugation or filtration wherein a dewatering aid in combination with a clay dispersant is added to the slurry prior to centrifugation. The dewatering aid is preferably an alkylphenolethoxylate surfactant and the clay dispersant is preferably sodium hexametaphosphate. The combination aids in dewatering and also reduces the ash content of coal treated with the combination.

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