Metal recovery process
AssigneeCabot Corporation
InventorsClaude Deveau, Stephen R. Young
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Abstract
A method of recovering metal and/or oxide thereof from a slurry is described. The method involves magnetically separating at least a portion of any magnetic impurities from the slurry and then leaching or dissolving at least a portion of any remaining magnetic impurities in a slurry. At least one chelating agent can then be added to the slurry and the solids can be recovered from the slurry by various separation techniques. The methods of the present invention are particularly useful in the recovery of tantalum and/or oxide thereof especially tantalum and/or oxide thereof having a very fine size.
Claims26
A method of recovering metal and/or oxide thereof present in a slurry comprising:
- (a) magnetically separating at least a portion of magnetic impurities present in said slurry from said slurry;
- (b) leaching or dissolving at least a portion of the remaining magnetic impurities in said slurry;
- (c) adding at least one chelating agent to said slurry;
- and
- (d) recovering solids comprising said metal and/or oxide thereof present in said slurry.
Tailings obtained from ore comprising 250 ppm or less Ta2O5, wherein the ore is pegmatite.
Tailings obtained from ore comprising 250 ppm or less tantalum and/or oxide thereof wherein the ore is a tantalum bearing ore.
Dependencies are inferred from the claim text.