Process for coal beneficiation by froth flotation employing pret

Details Process for coal beneficiation by froth flotation employing pret Process for coal beneficiation by froth flotation employing pret

1985-09-20

1986-12-30

Nozick, Bernard

Classifying, separating, and assorting solids

Fluid suspension

Liquid

B03D 114

Patent

active

046327509

ABSTRACT:
A process for the beneficiation of coal by froth flotation comprising surface treating particulate coal with a polymerizable monomer, a polymerization catalyst and a liquid organic carrier thereby rendering said particulate coal hydrophobic and oleophilic and introducing said surface treated particulate coal to a froth flotation vessel containing a water wash medium thereby resulting in a froth phase and an aqueous phase, the improvement comprising pre-treating said water wash medium prior to introducing said surface treated particulate coal with an organic carboxylic acid.

REFERENCES:
patent: 2696431 (1954-12-01), Kidd
patent: 3203968 (1955-08-01), Sebba
patent: 4054516 (1977-10-01), Izumi et al.
patent: 4304573 (1981-12-01), Burgess et al.
patent: 4377472 (1983-03-01), Allen
patent: 4406664 (1983-09-01), Burgess et al.
patent: 4460460 (1984-07-01), Caviello et al.

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