Flotation of lead sulfides using rapeseed oil

Details Flotation of lead sulfides using rapeseed oil Flotation of lead sulfides using rapeseed oil

1994-10-20

1996-08-13

Lithgow, Thomas M.

Classifying, separating, and assorting solids

Fluid suspension

Liquid

241 20, B03D 102, B03D 106

Patent

active

055447600

ABSTRACT:
An improved method for recovering lead sulfides from a mineral deposits. Pulverized mineral deposit material is mixed with water, agitated with pH adjustment from about 8 to about 10.5 to form a slurry. Rapeseed oil is added to the conditioned slurry to render the surface of the lead sulfide particles hydrophobic. After agitating and adding a frothing agent, air bubbles are injected into the resultant composition to cause hydrophobic lead sulfide particles to become attached to the air bubbles and to rise and form a froth fraction which is then separated and recovered. The process uses substantially non-toxic rapeseed oil as a hydrophilizing agent. The process is less environmentally damaging, less costly and more specific in separating lead sulfides from iron containing minerals which are normally present in ores together with the lead sulfides.

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Chemical Abstracts 107:81479 "Thermal Differentiation Of Oils Used As Collectors In Floatation".
Chemical Abstracts 103:39267 "Chemical Problems With Rape Oil As Floatation Collector".
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