- Email: [email protected]
5356457 Hydrometallurgical process for the treatment of copper-bearing ore
New Patents
946
carbonaceous matter or finely ground carbon to the ore-lixiviant mixture. Furthermore, after the carbonaceous component of the ore is separated from the gangue, the gangue material can be treated in a hot GIL process to further incre‘ase the recovery of the precious metal.
5366092 SEPARATION OF VALUABLE MINERALS FROM MATERIAL FOUND IN THE BEDS OF BODIES OF WATER Schmidt Howard M, Venice, Sarasota County, FL, 34293, UNITED STATES A device for removal of solid materials from the beds of bodies of water and the separation and capture of materials having a relatively high specific gravity from lighter solid material. The device is particularly suitable for the extraction of gold from alluvial material. The device is small and lightweight and generally comprises a pipe having an open inlet end and an open outlet end. The pipe has a first opening and a second opening that communicate with a container attached to the pipe. A suction force is applied along the length of the pipe so that water and materials from the bed of the body of water enter the pipe. That material having a relatively high specific gravity is collected within the container.
5354359 HYDROMETALLURGICAL PROCESS FOR THE RECOVERY OF PRECIOUS METAL VALUES FROM PRECIOUS METAL ORES WITH THIOSULFATE LIXIVIANT Wan Rong-Yu; Levier K Mar, Clayton Richard B Salt Lake City, UT, UNITED STATES Assigned to Newmont Gold Co; Newmont Mining Co A hydrometallurgical process for the recovery of precious metal values from refractory precious metal ore materials containing preg-robbing carbon by leaching with a thiosulfate lixiviant, the process comprising a. providing a body of particles and/or particulates of an ore material having precious metal values and preg-robbing carbonaceous components; b. contacting the body of particles and/or particulates with a tbiosulfate lixiviant solution at conditions conducive to the formation of stable precious metal thiosulfate complexes; c. recovering the thiosulfate lixiviant from the body of particles and/or particulates after a period of contact which is sufficient for the lixiviant solution to become pregnant with precious metal values extracted from the ore material; and d. recovering the precious metal values from the lixiviant solution. In a preferred embodiment, the refractory ore materials are low grade precious metal ore materials.
5354345
5356457
REACTOR ARRANGEMENT FOR USE IN BENEFICIATING CARBONACEOUS SOLIDS; AND PROCESS
HYDROMETALLURGICAL PROCESS FOR THE TREATMENT OF COPPERBEARING ORE
Nehls George R Duluth, MN, UNITED STATES Assigned to Minnesota Power and Light
Pincheira Alvarez Aliro Teodoro Nelson; Reghezza Insunza Andres Antonio; 011s Rivera Albert0 Segundo Chuquicamata, CHILE Assigned to Corporation National Del Cobre De Chile
A process for thermochemical beneficiation of carbonaceous solids including a fraction of particles of a size less than l/4 inch across is provided. The process includes steps of providing a reactor vessel including therein a retaining structure operably positioned to separate a portion of carbonaceous solids from a wall of the reactor vessel, with a free standing liquids region therebetween. The process includes providing a portion of carbonaceous solids piled above an uppermost liquid level of process liquid within the reactor vessel. The disclosure also provides a preferred reactor arrangement for conduct of the process.
A hydrometallurgical process for recovering copper from copper bearing ores or fractions, by a process of fust wetting and sulfatizing the ore with controlled amounts of H2SO4 and water, followed by acid curing and repulping to sulfa&e a substantial portion of the copper in the ore. Also, the tine and coarse fractions can be classified, followed by pile leaching the coarse fraction, preferably reusing the cycled H2SO4 solution obtained during the copper recovery process. Since the coarse fraction is classified
941
New Patents
from the fine fraction, the pile leaching process is performed at very high specific flows, which substantially reduces the leaching period as compared with that of conventional pile leaching.
5358120
SELECTIVESEPARATIONOF FINELY-DIVIDEDMINERALSBY ADDITIONOF SELECTIVE COLLECTORREAGENTAND CENTRIFUGATION Gantt George; A.dkisson Thomas J; Gladin Preston B; Ussery Randall E Milledgeville, GA, UNTIED STATES Assigned to Engelhard Corporation Separation of impurities from kaolin clay is accomplished by conditioning a dispersed aqueous pulp of the clay with an anionic flotation collector, followed by centrifugation or the like to cause the impurities to settle from a dispersed pulp of the clay without an intermediate froth flotation step or a flotation waste froth is centrifuged or hyclrocloned to recover valuable kaolin contained in the froth.
5354359 HYDROMETALLURGICAL PROCESS FOR THE RECOVERY OF PRECIOUS METAL VALUES FROM PRECIOUS METAL ORES WITH THIOSULFATE LIXIVIANT Rong-Yu Wan, K Mar Levier, Clayton assigned to Newmont Newmont Mining Co
Richard B Gold Co;
A hydrometallurgical process for the recovery of precious metal values from refractory precious metal ore materials containing pregrobbing carbon by leaching with a thiosulfate lixiviant, the process comprising a. providing a body of particles and/or particulates of an ore material having precious metal values and preg-robbing carbonaceous components; b. contacting the body of particles and/or particulates with a thiosulfate lixiviant solution at conditions conducive to the formation of stable precious metal thiosulfate complexes; c. recovering the thiosulfate lixiviant from the body of particles and/or particulates after a period of contact which is sufficient for the lixiviant solution to become pregnant with precious metal values extracted from the ore material; and d. recovering the precious metal values from the lixiviant solution. In a preferred embodiment, the refractory ore materials are low grade precious metal ore materials.
5356457 5354345 REACTOR ARRANGEMENT FOR USE IN BENEFICIATING CARBONACEOUS SOLIDS; AND PROCESS George R Nehls assigned to Minnesota Power and Light A process for thermochemical benefkiation of carbonaceous solids including a fraction of particles of a size less than l/4 inch across is provided. The process includes steps of providing a reactor vessel including therein a retaining structure operably positioned to separate a portion of carbonaceous solids from a wall of the reactor vessel, with a free standing liquids region therebetween. The process includes providing a portion of carbonaceous solids piled above an uppermost liquid level of process liquid within the reactor vessel. The disclosure also provides a preferred reactor arrangement for conduct of the process.
HYDROMETALLURGICAL PROCESS FOR THE TREATMENT OF COPPERBEARING ORE Alvarez Aliro Teodoro Nelson Pincheira, Insunza Andres Antonio Reghezza, Rivera Albert0 Segundo Crus, Chuquicamata, Chile assigned to Corporation National Del Cobre De Chile A hydrometallurgical process for recovering copper from copper bearing ores or fractions, by a process of first wetting and sulfatizing the ore with controlled amounts of H2S04 and water, followed by acid curing and repulping to sulfatize a substantial portion of the copper in the ore. Also, the fine and coarse fractions can be classified, followed by pile leaching the coarse fraction, preferably reusing the cycled H2SO4 solution obtained during the copper recovery process. Since the coarse fraction is classified from the fine fraction, the pile leaching process is performed at very high
946
carbonaceous matter or finely ground carbon to the ore-lixiviant mixture. Furthermore, after the carbonaceous component of the ore is separated from the gangue, the gangue material can be treated in a hot GIL process to further incre‘ase the recovery of the precious metal.
5366092 SEPARATION OF VALUABLE MINERALS FROM MATERIAL FOUND IN THE BEDS OF BODIES OF WATER Schmidt Howard M, Venice, Sarasota County, FL, 34293, UNITED STATES A device for removal of solid materials from the beds of bodies of water and the separation and capture of materials having a relatively high specific gravity from lighter solid material. The device is particularly suitable for the extraction of gold from alluvial material. The device is small and lightweight and generally comprises a pipe having an open inlet end and an open outlet end. The pipe has a first opening and a second opening that communicate with a container attached to the pipe. A suction force is applied along the length of the pipe so that water and materials from the bed of the body of water enter the pipe. That material having a relatively high specific gravity is collected within the container.
5354359 HYDROMETALLURGICAL PROCESS FOR THE RECOVERY OF PRECIOUS METAL VALUES FROM PRECIOUS METAL ORES WITH THIOSULFATE LIXIVIANT Wan Rong-Yu; Levier K Mar, Clayton Richard B Salt Lake City, UT, UNITED STATES Assigned to Newmont Gold Co; Newmont Mining Co A hydrometallurgical process for the recovery of precious metal values from refractory precious metal ore materials containing preg-robbing carbon by leaching with a thiosulfate lixiviant, the process comprising a. providing a body of particles and/or particulates of an ore material having precious metal values and preg-robbing carbonaceous components; b. contacting the body of particles and/or particulates with a tbiosulfate lixiviant solution at conditions conducive to the formation of stable precious metal thiosulfate complexes; c. recovering the thiosulfate lixiviant from the body of particles and/or particulates after a period of contact which is sufficient for the lixiviant solution to become pregnant with precious metal values extracted from the ore material; and d. recovering the precious metal values from the lixiviant solution. In a preferred embodiment, the refractory ore materials are low grade precious metal ore materials.
5354345
5356457
REACTOR ARRANGEMENT FOR USE IN BENEFICIATING CARBONACEOUS SOLIDS; AND PROCESS
HYDROMETALLURGICAL PROCESS FOR THE TREATMENT OF COPPERBEARING ORE
Nehls George R Duluth, MN, UNITED STATES Assigned to Minnesota Power and Light
Pincheira Alvarez Aliro Teodoro Nelson; Reghezza Insunza Andres Antonio; 011s Rivera Albert0 Segundo Chuquicamata, CHILE Assigned to Corporation National Del Cobre De Chile
A process for thermochemical beneficiation of carbonaceous solids including a fraction of particles of a size less than l/4 inch across is provided. The process includes steps of providing a reactor vessel including therein a retaining structure operably positioned to separate a portion of carbonaceous solids from a wall of the reactor vessel, with a free standing liquids region therebetween. The process includes providing a portion of carbonaceous solids piled above an uppermost liquid level of process liquid within the reactor vessel. The disclosure also provides a preferred reactor arrangement for conduct of the process.
A hydrometallurgical process for recovering copper from copper bearing ores or fractions, by a process of fust wetting and sulfatizing the ore with controlled amounts of H2SO4 and water, followed by acid curing and repulping to sulfa&e a substantial portion of the copper in the ore. Also, the tine and coarse fractions can be classified, followed by pile leaching the coarse fraction, preferably reusing the cycled H2SO4 solution obtained during the copper recovery process. Since the coarse fraction is classified
941
New Patents
from the fine fraction, the pile leaching process is performed at very high specific flows, which substantially reduces the leaching period as compared with that of conventional pile leaching.
5358120
SELECTIVESEPARATIONOF FINELY-DIVIDEDMINERALSBY ADDITIONOF SELECTIVE COLLECTORREAGENTAND CENTRIFUGATION Gantt George; A.dkisson Thomas J; Gladin Preston B; Ussery Randall E Milledgeville, GA, UNTIED STATES Assigned to Engelhard Corporation Separation of impurities from kaolin clay is accomplished by conditioning a dispersed aqueous pulp of the clay with an anionic flotation collector, followed by centrifugation or the like to cause the impurities to settle from a dispersed pulp of the clay without an intermediate froth flotation step or a flotation waste froth is centrifuged or hyclrocloned to recover valuable kaolin contained in the froth.
5354359 HYDROMETALLURGICAL PROCESS FOR THE RECOVERY OF PRECIOUS METAL VALUES FROM PRECIOUS METAL ORES WITH THIOSULFATE LIXIVIANT Rong-Yu Wan, K Mar Levier, Clayton assigned to Newmont Newmont Mining Co
Richard B Gold Co;
A hydrometallurgical process for the recovery of precious metal values from refractory precious metal ore materials containing pregrobbing carbon by leaching with a thiosulfate lixiviant, the process comprising a. providing a body of particles and/or particulates of an ore material having precious metal values and preg-robbing carbonaceous components; b. contacting the body of particles and/or particulates with a thiosulfate lixiviant solution at conditions conducive to the formation of stable precious metal thiosulfate complexes; c. recovering the thiosulfate lixiviant from the body of particles and/or particulates after a period of contact which is sufficient for the lixiviant solution to become pregnant with precious metal values extracted from the ore material; and d. recovering the precious metal values from the lixiviant solution. In a preferred embodiment, the refractory ore materials are low grade precious metal ore materials.
5356457 5354345 REACTOR ARRANGEMENT FOR USE IN BENEFICIATING CARBONACEOUS SOLIDS; AND PROCESS George R Nehls assigned to Minnesota Power and Light A process for thermochemical benefkiation of carbonaceous solids including a fraction of particles of a size less than l/4 inch across is provided. The process includes steps of providing a reactor vessel including therein a retaining structure operably positioned to separate a portion of carbonaceous solids from a wall of the reactor vessel, with a free standing liquids region therebetween. The process includes providing a portion of carbonaceous solids piled above an uppermost liquid level of process liquid within the reactor vessel. The disclosure also provides a preferred reactor arrangement for conduct of the process.
HYDROMETALLURGICAL PROCESS FOR THE TREATMENT OF COPPERBEARING ORE Alvarez Aliro Teodoro Nelson Pincheira, Insunza Andres Antonio Reghezza, Rivera Albert0 Segundo Crus, Chuquicamata, Chile assigned to Corporation National Del Cobre De Chile A hydrometallurgical process for recovering copper from copper bearing ores or fractions, by a process of first wetting and sulfatizing the ore with controlled amounts of H2S04 and water, followed by acid curing and repulping to sulfatize a substantial portion of the copper in the ore. Also, the fine and coarse fractions can be classified, followed by pile leaching the coarse fraction, preferably reusing the cycled H2SO4 solution obtained during the copper recovery process. Since the coarse fraction is classified from the fine fraction, the pile leaching process is performed at very high