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US 11,021,801 B2Granted
Recovery of a metal from primary and secondary sulphurated minerals and oxidized minerals, and other compositions of valuable minerals
AssigneeQuantum Matrix SPA
InventorGuillermo Sebastián Gómez Verdejo
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Abstract
A method to separate and recover at least one metal from a source of oxidized and/or primary and secondary sulfide ores by determining and modifying the values of the dielectric constant of the minerals source.
Claims20
A method to separate and recover at least one metal from a source of oxidized and/or primary and secondary sulfide ores, the method comprising the following stages:
- i. providing in a reactor a source of oxidized and/or primary and secondary sulfide ores, where said ores source has a controlled granulometry by a size selection by a sieve;
- ii. determining the value of the dielectric constant of the ores source by electromagnetic, chemical, physical and/or mineralogical characterization;
- iii. providing an acid leaching composition A with a dielectric constant of at least 2% to 10% greater than the dielectric constant of the ore source;
- iv. modifying the value of the dielectric constant of the ores source by incorporating to the reactor an aqueous acid composition B having a dielectric constant of at least 2% to 10% greater than the dielectric constant of the ore source;
- v. contacting the ores source with the acid leaching composition A under controlled conditions of pressure and temperature in the reactor in order to form a mixture between the leaching composition A and the source of ores, where said reactor forms part of a system comprising a generating set and radio frequency amplifier, allowing to providing radio frequency to the mixture recirculating in the reactor,
- vi. submitting the mixture to stirring and recirculation of the leaching composition A through the system;
- vii. providing the mixture with a supply oxygen and ozone through an oxygen concentrator and ozonizer, where said supply has been previously submitted to treatment with ultraviolet light generated by an UV unit, which can optionally provide radio frequency to the gas corning from the ozonizer;
- viii. allowing the dissolution of the metal and the migration of said metal to the leaching composition in order to provide a composition comprising the solubilized metal (PLS);
- ix. through an electrochemical separation technique, extracting the metal from the PLS solution.
6 more elements
Dependencies are inferred from the claim text.