Process for beneficiating ilmenite ore
Abstract
Abstract A TITANIUM DIOXIDE CONCENTRATE SUITABLE FOR USE AS CHLORINATION FEED MATERIAL IS PRODUCED BY AN OXIDATION-LEACH ING PROCESS WHEREIN THE METALLIC IRON IS AN UPGRADED METALLIZED ILMENITE HEREINAFTER REFERRED TO AS A METALLIZED ORE CONCENTRATE, IS LEACHED OUT OF THE METALLIZED CONCENTRATE BY VIGOROUSLY AGITATING THE LATER IN AN AQUEOUS SOLUTION CONTAINING FERROUS AND FERRIC IONS AND IN THE PRESENCE OF AIR OR OXYGEN WHEREBY THE METALLIC IRON IS OXIDIZED TO SOLUBLE FERROUS IRON WHICH IS WASHED OUT OF THE DISCRETE PARTICLES OF METALLIZED ORE CONCENTRATE WITH MINIMAL LOSS OF TI02 VALUES AND THEREAFTER OXIDIZED TO FORM SOLID PARTICULATE IRON OXIDE WHICH IS SEPARTED FROM THE RESIDUAL TI02 CONCENTRATE BY FILTRATION. THE PROCESS MAY BE A BATCH TYPE OPERATION BUT IS PREFERABLY A CONTINUOUS OPERATION WHEREIN THE FILTRATE CONTAINING FERROUS OR FERRIC IONS IS RECOVERED AND RECYLED IN WHOLE OR IN PART TO LEACH ADDITIONAL METALLIZED ORE CONCENTRATE.
Inventors
- 👤 Langtry E Lynd
- 👤 Arnold N Nilsen
- 👤 Louis E Maccardle
Bibliographic Details
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