公开(公告)号：US07785395B2

公开(公告)日：2010-08-31

申请号：US11884125

申请日：2006-02-14

申请人： Jaakko Leppinen ,  Olli Hyvärinen ,  Seppo Heimala ,  Veikko Palosaari ,  Matti Hämäläinen ,  Tuula Hämäläinen, legal representative

发明人： Jaakko Leppinen ,  Olli Hyvärinen ,  Seppo Heimala ,  Veikko Palosaari ,  Matti Hämäläinen

IPC分类号： C22B3/04 ,  C22B3/18 ,  C22B11/06

CPC分类号： C22B11/04 ,  C22B15/0069 ,  C22B15/0086 ,  Y02P10/236

摘要： The invention relates to a method for recovering gold from a sulphidic concentrate, particularly one containing arsenopyrite and/or pyrite, hydro-metallurgically. The concentrate is first subjected to leaching with a concentrated solution of alkali chloride and copper (II) chloride, by means of which the copper minerals and some of the gold in the concentrate are made to dissolve. Elemental sulphur and precipitated iron and arsenic compounds are separated from the leaching residue using physical separation methods, whereby the first intermediate is obtained, which contains gold-bearing sulphide minerals and gangue minerals as well as the gold that remains undissolved. The free gold that remains undissolved is separated by means of gravity separation methods. After gravity separation, additional comminution is carried out, after which the sulphide minerals are decomposed and the gold-containing solution or residue is routed to the concentrate leaching circuit.

摘要翻译： 本发明涉及从硫化物浓缩物中回收金的方法，特别是含有砷黄铁矿和/或黄铁矿的金。 首先将浓缩物用碱金属氯化物和氯化铜（II）的浓溶液进行浸出，借此使浓缩物中的铜矿物质和一些金子溶解。 使用物理分离方法将元素硫和沉淀的铁和砷化合物与浸出残渣分离，由此获得含有含金硫化物矿物和脉石矿物以及未溶解的金的第一中间体。 通过重力分离方法分离出未溶解的游离金。 在重力分离之后，进行额外的粉碎，之后分解硫化物矿物，并将含金溶液或残余物送至浓缩液浸出回路。