Abrégé

A process for recovering copper, uranium and one or more precious metals from an ore material, including: a. forming a heap of the ore material; b. subjecting the heap of the ore material to an acidic heap leach using an iron containing acidic leach solution in the presence of an oxygen containing gas, and producing a pregnant leach solution and a ripios; c. subjecting the ripios to flotation to produce a copper containing ripios concentrate and tailings; and d. subjecting the ripios concentrate to a smelting process to produce a smelted copper product. e. recovering copper and uranium from the pregnant leach solution.

Classes IPC  ?

• C22B 3/04 - Extraction de composés métalliques par voie humide à partir de minerais ou de concentrés par lixiviation
• C22B 3/06 - Extraction de composés métalliques par voie humide à partir de minerais ou de concentrés par lixiviation dans des solutions inorganiques acides
• C22B 15/00 - Obtention du cuivre
• C22B 60/02 - Obtention du thorium, de l'uranium ou des autres actinides
• C22B 11/00 - Obtention des métaux nobles

Abrégé

1. A method for recovering one or more of copper, uranium and a precious metal from an ore material, including: (a) forming a heap of the ore material; (b) during active heap irrigation, contacting the heap of the ore material with an iron containing acidic leach liquor having a high chloride content in the presence of an oxygen containing gas, and producing a pregnant leach solution; and (c) recovering one or more of copper, uranium and a precious metal from the pregnant leach solution.

Classes IPC  ?

• C22B 3/06 - Extraction de composés métalliques par voie humide à partir de minerais ou de concentrés par lixiviation dans des solutions inorganiques acides
• C22B 60/00 - Obtention des métaux ayant un nombre atomique de 87 ou plus, c.-à-d. métaux radioactifs
• C22B 15/00 - Obtention du cuivre

Abrégé

A process for recovering copper, uranium and one or more precious metals from an ore material, including: a. forming a heap of the ore material; b. subjecting the heap of the ore material to an acidic heap leach using an iron containing acidic leach solution in the presence of an oxygen containing gas, and producing a first pregnant leach solution and a ripios; c. subjecting the ripios to flotation to produce a copper concentrate and tailings; d. subjecting the copper concentrate to an oxidative acid leach to produce a second pregnant leach solution and a leach residue; e. treating at least the first pregnant leach solution in an extraction step to extract uranium and copper; and f. treating the leach residue from step (d) to recover the one or more precious metals.

Classes IPC  ?

• C22B 3/06 - Extraction de composés métalliques par voie humide à partir de minerais ou de concentrés par lixiviation dans des solutions inorganiques acides
• C22B 11/00 - Obtention des métaux nobles
• C22B 15/00 - Obtention du cuivre
• C22B 60/02 - Obtention du thorium, de l'uranium ou des autres actinides

Abrégé

A process for extracting uranium from an acidic uranium, chloride, iron and sulphate containing solution, including the steps: a. contacting the solution with an organic phase containing a trialkylphosphine oxide to form a uranium loaded organic phase; b. scrubbing the uranium loaded organic phase to remove any impurities and form a scrubbed organic phase; c. stripping the scrubbed organic phase with an acidic sulphate solution to produce an aqueous uranium strip solution; and precipitating a uranium product from the aqueous uranium strip solution.

Classes IPC  ?

• C22B 60/02 - Obtention du thorium, de l'uranium ou des autres actinides
• C22B 3/16 - Extraction de composés métalliques par voie humide à partir de minerais ou de concentrés par lixiviation dans des solutions organiques
• C22B 3/26 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation par extraction liquide-liquide utilisant des composés organiques
• C22B 3/28 - Amines
• C22B 3/38 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation par extraction liquide-liquide utilisant des composés organiques contenant du phosphore

Abrégé

A process for the removal of one or more radioactive impurities from a copper bearing copper containing material having a radioactivity greater than a predetermined level, including: (a) forming a melt from the copper containing material, (b) treating the molten copper containing material under conditions sufficient to substantially volatilise and separate the impurities from the molten copper containing material, and (c) producing a copper product from the molten copper containing material.

Classes IPC  ?

• C22B 15/00 - Obtention du cuivre
• C22B 15/14 - Affinage
• C01G 3/00 - Composés du cuivre
• G21F 9/00 - Traitement des matériaux contaminés par la radioactivitéDispositions à cet effet pour la décontamination
• G21F 9/28 - Traitement des solides

Abrégé

A process for leaching uranium from a refractory uraniferous mineral including the step of treating a slurry containing said uraniferous mineral and ferrous ions in a reactor with an acid and an oxidant to increase the ORP in the reactor to a value of at least 550m V vs Ag/Ag Cl reference electrode in order to oxidise the ferrous ions to ferric ions, which are used to oxidise said refractory uraniferous mineral and contribute to leaching of uranium from said uraniferous mineral,wherein the slurry has an elevated total dissolved iron content.

Classes IPC  ?

• C22B 3/06 - Extraction de composés métalliques par voie humide à partir de minerais ou de concentrés par lixiviation dans des solutions inorganiques acides
• C22B 60/02 - Obtention du thorium, de l'uranium ou des autres actinides

Abrégé

A process for producing a ferric containing solution by the controlled oxidation of a ferrous containing solution, said process including providing a solution containing at least ferrous ions; treating the solution with one or more inlet gases containing sulfur dioxide and oxygen in order to oxidize said ferrous ions to ferric ions, wherein the delivery rate of the sulfur dioxide gas is oxidation rate limiting; and controlling the concentration of dissolved oxygen in said solution at an optimum value.

Classes IPC  ?

• C22B 3/20 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation
• C22B 3/44 - Traitement ou purification de solutions, p. ex. de solutions obtenues par lixiviation par des procédés chimiques