Beneficiation of ilmenite ore
AssigneeBenilite Corporation of America
InventorsJames H. Chen, Lewis W. Huntoon
Life of this patent
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Abstract
A small amount of sulfate ion is added to the hydrochloric acid leach liquor used to beneficiate ilmenite ore whereby fines or slime formation in the mother liquor is minimized or reduced and the color of the solid beneficiated ilmenite product is lighter.
Claims8
In a process for the beneficiation of ilmenite ore wherein the ilmenite ore is leached with a hydrochloric acid leach liquor to provide a mother liquor containing acid-soluble iron contaminant values and acid-insoluble titanium values and these values are subsequently separated from one another to yield a solid beneficiated ilmenite product, the improvement which comprises leaching the ilmenite ore with a stoichiometric excess of the hydrochloric acid leach liquor containing added sulfate ion in a small amount of from about 0.5% to about 2.5% of the weight of the ilmenite ore, whereby fines or slime formation in the mother liquor is minimized and the color of the solid beneficiated ilmenite product is lighter.
Dependencies are inferred from the claim text.