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US 10,604,821 B2Granted
Process for recovering precious metals from clay-containing ores
AssigneeEthox Chemicals, LLC
InventorsCharles F. Palmer, Jr., John W. McKiernan, Charles F. Palmer, III
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Abstract
A solution for leaching metals from clay containing ore and a method of leaching ore is described. The solution comprises a cyanide; a wetting agent; and a clay stabilizing polymer.
Claims26
A solution for leaching a metal from clay containing ore comprising:
- cyanide;
- a wetting agent;
- and
- a clay stabilizing polymer wherein said clay stabilizing polymer is selected from the group consisting of polyalkylene oxide copolymer;
- propoxylated glycols;
- polyamine copolymers comprising dicyandiamide, formaldehyde and ammonia;
- polyvinyl alcohol;
- partially hydrolyzed polyvinyl acetate;
- polyacrylamide;
- quaternary amines;
- carboxymethyl cellulose;
- methacrylate copolymers;
- hydroxyaldehydes;
- hydroxyketones;
- and copolymers of cationic monomers.
12 more elements
A solution for leaching a metal from clay containing ore comprising:
- cyanide;
- a wetting agent;
- and
- a clay stabilizing polymer wherein said clay stabilizing polymer is selected from the group consisting of
- a polyalkylene oxide copolymer, a propoxylated glycol and a polyamine copolymer.
2 more elements
A solution for leaching a metal from clay containing ore comprising:
- cyanide;
- a wetting agent wherein said wetting agent is selected from the group consisting of alcohol ethoxylates;
- polyethylene glycol esters, hydrophilic modified silicones, and fatty amine ethoxylates;
- and
- a clay stabilizing polymer.
2 more elements
Dependencies are inferred from the claim text.