Process for extraction of metals from ores or industrial materials
OwnerJames Holgerseninventor
Life of this patent
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Abstract
Process for extracting and recovering metals, including precious metals, such as platinum group metals and gold, from natural ores, ore concentrates or industrial materials, including contacting the natural ores, ore concentrates or industrial materials with a hydroxide-containing compound at an elevated temperature; dissolving the material in a solution, and recovering the metals from the solution.
Claims29
A process for extracting one or more metals from a target material, the method comprising the steps of:
- a) contacting the target material with a liquid hydroxide solution;
- b) heating the target material of step a) with heating means;
- c) removing the target material from the heating means;
- d) cooling the target material;
- e) placing the target material in a solution;
- f) recovering one or more metals from the solution.
A process for extracting one or more metals from a target material, the method comprising the steps of,:
- a) contacting the target material with a hydroxide-containing chemical or material;
- b) heating the target material of step a) with a heating means to convert metal bonds of the target material to their metal hydroxide forms;
- c) cooling the target material of step b);
- e) placing the target material in a solution;
- f) recovering one or more metals from the solution.
A process for recovering one or more metals, including one or more precious metals which may include platinum group metals, gold, silver, nickel and copper, from a target material comprised of natural ores, ore concentrates or industrial materials, the process comprising the steps of:
- a) effectuating contact of the target material with a hydroxide-containing material at a temperature of about or greater than 50° C. to convert existing metal bonds to metal hydroxides;
- b) reducing the temperature of the target material after step a);
- c) immersing the target material in a solution;
- d) recovering from the solution in step c) one or more metals.
Dependencies are inferred from the claim text.