Abstract

Processes for recovering iodine from solid materials in which copper is present are performed by combining the solid material with a basic solution having a pH greater than 10 to solubilize and remove iodine from the solid material, thereby forming an iodine recovery stream.

IPC Classes  ?

• C22B 3/44 - Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
• B01D 11/02 - Solvent extraction of solids
• C22B 3/12 - Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic alkaline solutions
• C22B 11/00 - Obtaining noble metals

Abstract

Materials and methods for precious metal recovery are disclosed. An aqueous-based leaching solution is disclosed comprising an iodide salt material; an iodate salt material, a chlorite salt material, or any combination thereof; and phosphoric acid. Oxidant material can be, in some instances, generated in-situ. The leaching solution is typically contacted with a substrate having a target precious metal, thereby solubilizing precious metal to form a stable, pregnant solution. The precious metal can then be recovered from the pregnant solution. In some instances, components of the leaching solution can be regenerated and reused in subsequent leaching.

IPC Classes  ?

• C22B 3/04 - Extraction of metal compounds from ores or concentrates by wet processes by leaching
• B01D 11/02 - Solvent extraction of solids
• C22B 3/06 - Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions
• C22B 3/20 - Treatment or purification of solutions, e.g. obtained by leaching
• C25B 1/22 - Inorganic acids
• C25B 1/24 - Halogens or compounds thereof
• C22B 11/00 - Obtaining noble metals

Abstract

Materials and methods for precious metal recovery are disclosed. Usable leaching solutions are preferably aqueous based and include appropriate materials in sufficient quantities to solubilize and stabilize precious metal. Such materials typically include oxidant material. Some or all of the oxidant material can be, in some instances, generated in-situ. The leaching solution is typically contacted with a substrate having a target precious metal, thereby solubilizing precious metal to form a stable, pregnant solution. The precious metal can then be recovered from the pregnant solution. In some instances, components of the leaching solution can be regenerated and reused in subsequent leaching.

IPC Classes  ?

• C22B 3/04 - Extraction of metal compounds from ores or concentrates by wet processes by leaching

Abstract

Materials and methods for precious metal recovery are disclosed. Usable leaching solutions are preferably aqueous based and include appropriate materials in sufficient quantities to solubilize and stabilize precious metal. Such materials typically include oxidant material. Some or all of the oxidant material can be, in some instances, generated in-situ. The leaching solution is typically contacted with a substrate having a target precious metal, thereby solubilizing precious metal to form a stable, pregnant solution. The precious metal can then be recovered from the pregnant solution. In some instances, components of the leaching solution can be regenerated and reused in subsequent leaching.

IPC Classes  ?

• C22B 3/16 - Extraction of metal compounds from ores or concentrates by wet processes by leaching in organic solutions
• B01J 19/08 - Processes employing the direct application of electric or wave energy, or particle radiationApparatus therefor
• C22B 3/00 - Extraction of metal compounds from ores or concentrates by wet processes
• C22B 3/10 - Hydrochloric acid

Abstract

Materials and methods for precious metal recovery are disclosed. Usable leaching solutions are preferably aqueous based and include appropriate materials in sufficient quantities to solubilize and stabilize precious metal. Such materials typically include oxidant material. Some or all of the oxidant material can be, in some instances, generated in-situ. The leaching solution is typically contacted with a substrate having a target precious metal, thereby solubilizing precious metal to form a stable, pregnant solution. The precious metal can then be recovered from the pregnant solution. In some instances, components of the leaching solution can be regenerated and reused in subsequent leaching.

IPC Classes  ?

• C22B 3/10 - Hydrochloric acid
• C22B 3/16 - Extraction of metal compounds from ores or concentrates by wet processes by leaching in organic solutions
• C22B 3/20 - Treatment or purification of solutions, e.g. obtained by leaching
• C25C 1/00 - Electrolytic production, recovery or refining of metals by electrolysis of solutions
• C25D 3/10 - ElectroplatingBaths therefor from solutions of chromium characterised by the organic bath constituents used
• C22B 3/00 - Extraction of metal compounds from ores or concentrates by wet processes
• C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof
• C22B 3/04 - Extraction of metal compounds from ores or concentrates by wet processes by leaching
• C22B 3/06 - Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions

Abstract

An aqueous-based leaching solution for precious metal, the leaching solution comprising iodide salt material; and carboxylic acid material, the leaching solution being made by a process including the step of passing a first mixture through an electrochemical cell until a measured oxidation reduction potential (ORP) is at least 540 mV, the first mixture including iodide salt material, carboxylic acid material and water.

IPC Classes  ?

• C22B 3/16 - Extraction of metal compounds from ores or concentrates by wet processes by leaching in organic solutions
• C22B 3/20 - Treatment or purification of solutions, e.g. obtained by leaching
• C25B 1/24 - Halogens or compounds thereof
• C22B 11/00 - Obtaining noble metals

Goods & Services

Lixiviant chemical solution used to selectively extract metal from ore, mineral or electronic waste

Goods & Services

(1) Lixiviant chemical solution used to selectively extract metal from ore, mineral or electronic waste