公开(公告)号：US20120234138A1

公开(公告)日：2012-09-20

申请号：US13422505

申请日：2012-03-16

申请人： Kazuhiro HATANO ,  Yoshifumi ABE ,  Eiki ONO ,  Koji KATSUKAWA

发明人： Kazuhiro HATANO ,  Yoshifumi ABE ,  Eiki ONO ,  Koji KATSUKAWA

IPC分类号： C22B11/00

CPC分类号： C22B3/0018 ,  C22B3/0009 ,  C22B11/04 ,  Y02P10/234

摘要： Disclosed is a method of recovering gold from an aqueous solution having a gold concentration of 10 mg/L or lower, using a plurality of extraction apparatuses for bringing the aqueous solution into contact with an extraction agent, arranged to configure a multi-stage extraction process, the method allowing the aqueous solution to continuously flow from the first-stage extraction process to the next-stage extraction process, while recycling the extraction medium used in each stage twice or more times for the extraction process of the same stage, without back extraction and reduction.

摘要翻译： 公开了一种使用多个用于使水溶液与提取剂接触的提取装置从金浓度为10mg / L以下的水溶液中回收金的方法，其被配置为构成多级提取方法 ，允许水溶液从第一阶段提取过程连续流动到下一阶段提取过程的方法，同时在相同阶段的萃取过程中将每个阶段中使用的萃取介质再循环两次或更多次，而无需回萃 并减少。

公开(公告)号：US20120222519A1

公开(公告)日：2012-09-06

申请号：US13410975

申请日：2012-03-02

申请人： Kazuhiro HATANO ,  Yoshifumi ABE ,  Koji KATSUKAWA ,  Eiki ONO

发明人： Kazuhiro HATANO ,  Yoshifumi ABE ,  Koji KATSUKAWA ,  Eiki ONO

IPC分类号： C22B3/06

CPC分类号： C22B15/0069 ,  C22B3/06 ,  C22B11/04 ,  Y02P10/234 ,  Y02P10/236 ,  Y02W30/54

摘要： Disclosed is a method of leaching copper and gold from sulfide ores, which includes Process (1) of bringing a first aqueous acidic solution which contains chlorine ion, copper ion and iron ion, but no bromine ion, into contact with sulfide ores under supply of an oxidizing agent, so as to leach copper component contained in the sulfide ores; Process (2) of separating, by solid-liquid separation, a leaching reaction liquid obtained in Process (1), into a leaching residue and a leachate; and Process (3) of bringing a second aqueous acidic solution which contains chlorine ion, bromine ion, copper ion and iron ion, into contact with the leaching residue obtained in Process (2) under supply of an oxidizing agent, so as to leach gold contained in the leaching residue.

摘要翻译： 公开了一种从硫化矿中浸出铜和金的方法，其中包括使含有氯离子，铜离子和铁离子但不含溴离子的第一酸性水溶液与硫化矿相接触的方法（1） 氧化剂，以便浸出硫化矿石中所含的铜成分; 通过固液分离将方法（1）中得到的浸出反应液分离成浸出残渣和浸出液的方法（2） 以及使含有氯离子，溴离子，铜离子和铁离子的第二酸性水溶液与氧化剂供给时的方法（2）中得到的浸出残渣接触的方法（3），以浸出金 包含在浸出残渣中。