The Commonwealth Industrial Gases Ltd.

The Commonweath Industrial Gases Limited

Walter Hoecker

Disclosed is a process for the flotation of a mineral concentrate comprising the steps of forming an aqueous slurry of a milled mineral ore containing particles of a desired mineral species and adding a flotation reagent which causes a desired variation in the flotation tendency of the desired mineral species present within the slurry so as to increase the efficiency of separation of that mineral species from the slurry relative to a situation where said flotation reagent is absent from the slurry. A stabilising agent is introduced to the slurry in an amount which creates electrochemical conditions conductive to separation of the desired mineral from the slurry and causes the destruction of a deleterious component from the slurry which consumes the flotation reagent thereby maintaining or improving the efficiency of separation of the desired mineral species from the slurry of milled ore.

Flotation process

A process for removal of iron from reduced titanium ores involves hydrometallurgical treatment with an aqueous solution through which an oxidising gas including oxygen and/or ozone is passed to oxidise metallised iron present within said reduced titanium ore.

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Subiaco, Australia

Walter Hoecker