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公开(公告)号：US20230313336A1
公开(公告)日：2023-10-05
申请号：US18122279
申请日：2023-03-16
摘要： The present disclosure is directed to a gold recovery process in which activated carbon or another carbon-based material is used to accelerate thiosulfate leaching of gold from a gold-bearing material.
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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：US08016912B2
公开(公告)日：2011-09-13
申请号：US12208954
申请日：2008-09-11
CPC分类号： C22B1/06 , C22B4/00 , C22B4/04 , C22B5/02 , C22B7/04 , C22B9/10 , C22B11/02 , C22B23/025 , C22B34/32 , Y02P10/212
摘要： In the process of recovering platinum group metals from platinum group metal- and base metal-containing materials, the present invention uses reductants and a sulfur-deficient matte to aide the separation of the furnace matte from the furnace slag and therefore improve recovery of platinum group metals.
摘要翻译： 在从铂族金属和贱金属的材料中回收铂族金属的过程中，本发明使用还原剂和不含硫的锍来防止炉膛与炉渣的分离，从而提高铂族金属的回收率 金属。
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公开(公告)号：US20090074608A1
公开(公告)日：2009-03-19
申请号：US12208961
申请日：2008-09-11
申请人： Daniel Hillier , Noelene Ahern , Yeonuk Choi
发明人： Daniel Hillier , Noelene Ahern , Yeonuk Choi
摘要： A method for suppressing mercury dissolution during pressure oxidation of precious metal-containing materials in the presence of halogens and halides is provided. Pressure oxidation is performed under controlled oxidative conditions to maintain the mercury predominantly in the solid residue.
摘要翻译： 提供了一种在卤素和卤化物存在下抑制含贵金属材料的压力氧化过程中的汞溶解的方法。 在受控氧化条件下进行压力氧化，以将汞主要维持在固体残渣中。
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公开(公告)号：US20090071295A1
公开(公告)日：2009-03-19
申请号：US12208985
申请日：2008-09-11
申请人： Barun Gorain , Peter Kondos
发明人： Barun Gorain , Peter Kondos
摘要： The present invention is directed to a precious metal recovery process in which carbonaceous material, such as preg robbing carbon, is floated after sulfide oxidation to separate the carbonaceous material from the precious metal.
摘要翻译： 本发明涉及一种贵金属回收方法，其中碳质材料如预浸渍碳在硫化物氧化之后漂浮以将含碳材料与贵金属分离。
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公开(公告)号：US6110255A
公开(公告)日：2000-08-29
申请号：US61956
申请日：1998-04-17
申请人： Richard Williams , Larry Enloe , Paul Wilmot , David Dixon
发明人： Richard Williams , Larry Enloe , Paul Wilmot , David Dixon
CPC分类号： C22B11/12 , C22B3/02 , Y02P10/234
摘要： A wear-resistant flash tank pressure let down nozzle for use in passing an ore slurry into an ore slurry flash tank to release steam from the slurry and reduce the pressure of the slurry. The nozzle has an expansion cone flaring toward the discharge end of the nozzle. The cross-sectional area of a choke section of the nozzle and the exit diameter of the expansion cone are selected to establish a relationship between pressure upstream of the nozzle and pressure in the flash tank so that underflashing, overflashing, and shock waves inside the flash tank are minimized.
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8.发明授权Gold recovery from refractory carbonaceous ores by pressure oxidation, thiosulfate leaching and resin-in-pulp adsorption 失效通过压力氧化，硫代硫酸盐浸出和树脂在纸浆吸附中从难熔碳质矿石中回收金
公开(公告)号：US5785736A
公开(公告)日：1998-07-28
申请号：US680906
申请日：1996-07-16
CPC分类号： C22B11/04 , C22B3/08 , C22B3/24 , C22B3/42 , Y02P10/234
摘要： A process for treatment of precious metal ores in which gold is leached from an oxidized ore slurry using a thiosulfate salt lixiviant and copper catalyst. Gold and copper are subsequently loaded onto an ion exchange resin. Copper is recovered from the resin by elution with a thiosulfate solution; gold is recovered from the resin by elution with a thiocyanate colution. Gold is recovered from the eluate by precipitation, electrowinning, or cementation.
摘要翻译： 一种处理贵金属矿石的方法，其中使用硫代硫酸盐浸滤剂和铜催化剂从氧化矿浆中浸出金。 随后将金和铜负载到离子交换树脂上。 通过用硫代硫酸盐溶液洗脱从树脂中回收铜; 通过用硫氰酸盐溶液洗脱从树脂中回收金。 通过沉淀，电解提取或胶结从洗脱液中回收金。
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公开(公告)号：US12065714B2
公开(公告)日：2024-08-20
申请号：US18122279
申请日：2023-03-16
摘要： The present disclosure is directed to a gold recovery process in which activated carbon or another carbon-based material is used to accelerate thiosulfate leaching of gold from a gold-bearing material. The present disclosure improves the overall precious metal recovery of thiosulfate refractory precious metal-bearing materials. Leaching is done by substantially simultaneously mixing a slurry containing the precious metal-bearing material, water, thiosulfate, a carbon-based material, and dissolved molecular oxygen (as the oxidizing reagent) and performing leaching in the presence of the various components for a predetermined residence time. The carbon-based material is maintained in the slurry during leaching to provide increased gold recoveries.
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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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