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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：US11639540B2
公开(公告)日：2023-05-02
申请号：US16748523
申请日：2020-01-21
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. In some embodiments, the gold recovery process comprises providing particulate activated carbon or another carbon-based material, providing a precious metal-bearing material, contacting the precious metal-bearing material with the particulate carbon-based material, thiosulfate, an anion exchange resin, and an oxidant to form a slurry comprising a slurried precious metal-bearing material, and leaching a precious metal from the slurried precious metal-bearing material.
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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：US20200232065A1
公开(公告)日：2020-07-23
申请号：US16748523
申请日：2020-01-21
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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