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公开(公告)号：US20200165702A1
公开(公告)日：2020-05-28
申请号：US16776332
申请日：2020-01-29
摘要： The disclosure relates to pre-treatment of precious metal-bearing oxide ores, prior to precious metal leaching by thiosulfate. The process comprises mixing oxide ore in oxygenated water in the presence of a carbon-based material (e.g., activated carbon or other type of carbon). The carbon-based material can be separated from the ore slurry, and, the gold is thereafter leached by a thiosulfate lixiviant.
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公开(公告)号：US10597752B2
公开(公告)日：2020-03-24
申请号：US15729961
申请日：2017-10-11
摘要： The disclosure relates to pre-treatment of precious metal-bearing oxide ores, prior to precious metal leaching by thiosulfate. The process comprises mixing oxide ore in oxygenated water in the presence of a carbon-based material (e.g., activated carbon or other type of carbon). The carbon-based material can be separated from the ore slurry, and, the gold is thereafter leached by a thiosulfate lixiviant.
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公开(公告)号：US09790572B2
公开(公告)日：2017-10-17
申请号：US13958683
申请日：2013-08-05
发明人： Yeonuk Choi , Samir Chefai
CPC分类号： C22B11/04 , B01D11/0257 , C22B3/12 , C22B3/24 , C22B3/42 , Y02P10/234
摘要： A method and system are provided in which a gold and/or silver-collecting resin-in-leach circuit comprises both co-current and counter-current sections.
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4.发明申请公开(公告)号：US20140356261A1
公开(公告)日：2014-12-04
申请号：US14287910
申请日：2014-05-27
CPC分类号： C22B30/04 , C01G49/0018 , C22B3/44 , C22B30/02 , Y02P10/234
摘要： The disclosure relates to the oxidation and immobilization of trivalent arsenic from arsenic-containing solutions. The process includes oxidation of trivalent arsenic (As3+) species to the pentavalent state (As5+). A carbon additive (e.g., activated carbon) and oxygen are used to promote the arsenic oxidation processes. After oxidation of arsenic to the pentavalent state, the arsenic can be removed by precipitation to ferric arsenate or calcium arsenate or other arsenic containing compounds known in the art. The oxidation of arsenic can also occur simultaneously with the production and precipitation of ferric arsenate (e.g., scorodite). Ferrous iron can be oxidized to ferric iron in the presence of activated carbon and oxygen.
摘要翻译： 本公开涉及从含砷溶液中氧化和固定三价砷。 该方法包括将三价砷（As3 +）物质氧化成五价态（As5 +）。 使用碳添加剂（例如活性炭）和氧来促进砷的氧化过程。 在将砷氧化成五价态之后，可通过沉淀砷酸砷或砷酸钙或本领域已知的其它含砷化合物来除去砷。 砷的氧化也可以与砷酸铁（例如，臭葱石）的生成和沉淀同时发生。 在活性炭和氧气存在下，亚铁可以氧化成三价铁。
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公开(公告)号：US10415116B2
公开(公告)日：2019-09-17
申请号：US15726091
申请日：2017-10-05
发明人： Yeonuk Choi , Samir Chefai
摘要： A method and system are provided in which a gold and/or silver-collecting resin-in-leach circuit comprises both co-current and counter-current sections.
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公开(公告)号：US10161016B2
公开(公告)日：2018-12-25
申请号：US14287889
申请日：2014-05-27
摘要： The disclosure relates to pre-treatment of precious metal-bearing oxide ores, prior to precious metal leaching by thiosulfate. The process comprises mixing oxide ore in oxygenated water in the presence of a carbon-based material (e.g., activated carbon or other type of carbon). The carbon-based material can be separated from the ore slurry, and, the gold is thereafter leached by a thiosulfate lixiviant.
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公开(公告)号：US10077487B2
公开(公告)日：2018-09-18
申请号：US14287910
申请日：2014-05-27
CPC分类号： C22B30/04 , C01G49/0018 , C22B3/44 , C22B30/02 , Y02P10/234
摘要： The disclosure relates to the oxidation and immobilization of trivalent arsenic from arsenic-containing solutions. The process includes oxidation of trivalent arsenic (As3+) species to the pentavalent state (As5+). A carbon additive (e.g., activated carbon) and oxygen are used to promote the arsenic oxidation processes. After oxidation of arsenic to the pentavalent state, the arsenic can be removed by precipitation to ferric arsenate or calcium arsenate or other arsenic containing compounds known in the art. The oxidation of arsenic can also occur simultaneously with the production and precipitation of ferric arsenate (e.g., scorodite). Ferrous iron can be oxidized to ferric iron in the presence of activated carbon and oxygen.
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公开(公告)号：US20180030572A1
公开(公告)日：2018-02-01
申请号：US15729961
申请日：2017-10-11
摘要： The disclosure relates to pre-treatment of precious metal-bearing oxide ores, prior to precious metal leaching by thiosulfate. The process comprises mixing oxide ore in oxygenated water in the presence of a carbon-based material (e.g., activated carbon or other type of carbon). The carbon-based material can be separated from the ore slurry, and, the gold is thereafter leached by a thiosulfate lixiviant.
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公开(公告)号：US20140356225A1
公开(公告)日：2014-12-04
申请号：US14287889
申请日：2014-05-27
CPC分类号： C22B11/04 , C22B1/00 , C22B3/04 , C22B3/08 , Y02P10/234
摘要： The disclosure relates to pre-treatment of precious metal-bearing oxide ores, prior to precious metal leaching by thiosulfate. The process comprises mixing oxide ore in oxygenated water in the presence of a carbon-based material (e.g., activated carbon or other type of carbon). The carbon-based material can be separated from the ore slurry, and, the gold is thereafter leached by a thiosulfate lixiviant.
摘要翻译： 本公开涉及在贵金属浸出硫代硫酸盐之前对含贵金属的氧化物矿石进行预处理。 该方法包括在碳基材料（例如活性炭或其它类型的碳）的存在下将氧化矿石混合在含氧水中。 碳基材料可以与矿石浆料分离，然后金子被硫代硫酸盐浸出物浸出。
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