公开(公告)号：US07985277B2

公开(公告)日：2011-07-26

申请号：US12281568

申请日：2007-03-05

申请人： Chen Xia ,  Wan-Tai Yen

发明人： Chen Xia ,  Wan-Tai Yen

IPC分类号： C22B3/04

CPC分类号： C22B3/08 ,  C22B3/24 ,  C22B11/04 ,  Y02P10/234

摘要： A process for extracting gold from a gold-bearing ore. The process includes, first, providing a leaching liquor with thiosulfate anion and ethylenediamine. Next, the leaching liquor is contacted with the gold-bearing ore to form a pregnant leach solution including gold dissolved from the gold-bearing ore. Finally, at least part of the gold in the pregnant leach solution is recovered.

摘要翻译： 从含金矿石中提取黄金的方法。 该方法首先提供一种含有硫代硫酸根阴离子和乙二胺的浸出液。 接下来，浸出液与含金矿石接触，形成含金矿石溶解的金的浸出溶液。 最后，怀孕浸出溶液中至少部分金子被回收。

公开(公告)号：US07972413B2

公开(公告)日：2011-07-05

申请号：US12296159

申请日：2007-04-05

申请人： Chen Xia

发明人： Chen Xia

IPC分类号： C22B3/06 ,  C22B11/00

CPC分类号： C22B11/04 ,  C22B3/10 ,  C22B3/14 ,  C22B3/44 ,  C22B3/46 ,  Y02P10/234

摘要： A method for recovering precious metals such as gold and silver from aqueous solution as solid is described The method includes mixing an aqueous solution (e.g, thiosulfate or thiocyanate lixiviant) containing precious metals with ferrous ions in the presence of an effective amount of hydroxide ions. The precious metal ions are reduced and co-precipitate with iron hydroxides and/or hydrated iron oxides The co-precipitate is collected and purified. De-oxygenation of the reaction solution is optional. The recover/method is fast, complete and clean.

摘要翻译： 描述了从作为固体的水溶液中回收贵金属如金和银的方法。该方法包括在有效量的氢氧根离子存在下，将含有贵金属的水溶液（例如硫代硫酸盐或硫氰酸盐浸渍剂）与亚铁离子混合。 贵金属离子被还原并与氢氧化铁和/或水合氧化铁共沉淀。收集并纯化共沉淀物。 反应溶液的脱氧是任选的。 恢复/方法快速，完整和干净。