Process for treating zircon
AssigneeAllied Eneabba Limited
InventorCorbett J. Poynton
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Abstract
A process for the treating of zircon to remove a coating which contains iron from the surface of individual grains to make them move amenable to electrostatic and magnetic separation, wherein the method comprises coating the zircon grains with a strong basic reagent, calcining the coated grains and treating the calcined grains to remove the calcined impurities.
Claims10
A process for the removal of surface impurities from zircon grains which comprises coating the zircon grains with a strong basic reagent, the coating being of an amount of 2 to 4% by weight of the zircon grains, calcining the coated grains at a temperature of at least 600.degree. C. for a retention time of more than about 10 minutes and no more than about 20 minutes, and removing the calcinated surface impurities from the calcined grains.
Dependencies are inferred from the claim text.