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    • 5. 发明申请
    • IMPROVED LEACHING OF MINERAL ORES
    • 改进矿渣的浸出
    • WO1998019779A1
    • 1998-05-14
    • PCT/AU1997000751
    • 1997-11-06
    • ATOMAER PTY. LTD.NGUYEN, Giao
    • ATOMAER PTY. LTD.
    • B01F03/04
    • C22B15/0067B01F3/04099B01F5/02B01F5/106B01F7/00341B01F7/16B01F13/1025B01F2003/04879C01G49/00C01G49/14C22B3/04C22B60/0226Y02P10/234Y02P10/236
    • A process for oxidation of ferrous ions in solution, and more particularly a process for improved base metal and/or uranium leaching from ores, concentrates or tailings using ferric ion as an oxidising agent. A reaction vessel (10) holds a ferrous ion-containing solution, for example, a copper sulphide leach slurry or concentrate. An agitator (12) may be provided to promote leaching of the base metal into solution. Some of the ferrous ion-containing solution is drawn off from the reaction vessel (10) and pumped through an in-line mixer (14) via a feed pump (16). Oxygen is injected into the reactor (14) to facilitate oxidation of the ferrous sulphate to form ferric sulphate. The ferric ion-containing solution is then recirculated back to the reaction vessel (10) where the ferric ions are reused in the dissolution of copper sulphide into soluble copper sulphate. The two processes of ferrous oxidation and metal leaching can be conducted either simultaneously or sequentially to effect recovery of copper, other base metals or uranium from ores, concentrates or tailings.
    • 一种用于在溶液中氧化亚铁离子的方法,更具体地说,一种使用铁离子作为氧化剂从矿石,浓缩物或尾矿中提纯碱金属和/或铀的方法。 反应容器(10)容纳含亚铁离子的溶液,例如硫化铜浸出浆料或浓缩物。 可以提供搅拌器(12)以促进贱金属浸入溶液中。 一些含亚铁离子的溶液从反应容器(10)中排出并通过进料泵(16)泵送通过在线混合器(14)。 将氧气注入反应器(14)以促进硫酸亚铁的氧化以形成硫酸铁。 然后将含铁离子的溶液再循环回反应容器(10),其中三价铁离子被再次用于将硫化铜溶解到可溶性硫酸铜中。 铁氧化和金属浸出的两个过程可以同时或相继进行,以从矿石,浓缩物或尾矿中回收铜,其他贱金属或铀。