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    Atmospheric mineral leaching process
    71.
    发明授权
    Atmospheric mineral leaching process 失效
    大气矿物浸出过程

    公开(公告)号：US5993635A

    公开(公告)日：1999-11-30

    申请号：US913552

    申请日：1998-01-06

    申请人： Michael Matthew Hourn ,  Duncan William Turner ,  Ian Raymond Holzberger

    发明人： Michael Matthew Hourn ,  Duncan William Turner ,  Ian Raymond Holzberger

    IPC分类号： C22B3/04 ,  C22B3/08 ,  C22B3/20 ,  C22B3/44 ,  C22B11/00 ,  C22B15/00 ,  C22B19/00 ,  C22B19/02 ,  C22B19/20 ,  C22B23/00 ,  C25C1/00 ,  C25C1/06 ,  C25C1/12 ,  C25C1/20

    CPC分类号： C22B3/20 ,  C22B19/22 ,  C22B23/04 ,  C22B3/08 ,  Y02P10/234

    摘要： A method is provided for processing a sulphide mineral composition which at least partly comprises an iron-containing mineral. The method includes the steps of: (a) milling said composition to a particle size P80 of 20 microns or less; (b) leaching said composition with a solution comprising sulphuric acid and ferric ions at ambient pressure while sparging with an oxygen-containing gas in an open tank reactor at a temperature of up to about the boiling point of the solution, whereby at least some of the acid and at least some of the ferric ions are obtained from dissolution of the iron-containing mineral, and ferrous ions generated by the leaching reaction are substantially re-oxidised to ferric ions in the leaching solution; (c) precipitating excess iron and separating said iron together with any solid materials from the leaching solution; (d) extracting desired metal ions from the leaching solution by solvent extraction with an organic solvent, such that the raffinate comprises sulphuric acid and ferric ions; (e) returning the raffinate to the leaching tank and blending with further milled composition; and (f) separating the metals from the organic phase obtained in step (c) by stripping with electrolyte and electrowinning.

    摘要翻译： PCT No.PCT / AU96 / 00157 Sec。 371日期：1998年1月6日 102（e）日期1998年1月6日PCT 1996年3月22日PCT公布。 公开号WO96 / 29439 日本1996年9月26日提供了一种加工至少部分含有铁的矿物的硫化物矿物组合物的方法。 该方法包括以下步骤：（a）将所述组合物研磨至20微米或更小的粒度P80; （b）在环境压力下用包含硫酸和铁离子的溶液浸出所述组合物，同时在开罐状态的反应器中在最高约溶液沸点的温度下用含氧气体喷射，由此至少一些 酸和至少一些铁离子是由含铁矿物的溶解获得的，并且通过浸出反应产生的亚铁离子基本上再次氧化成浸出溶液中的铁离子; （c）沉淀过量的铁，并将所述铁与来自浸出溶液的任何固体材料一起分离; （d）用有机溶剂通过溶剂萃取从浸出溶液中提取所需的金属离子，使得萃余液包含硫酸和铁离子; （e）将萃余液返回到浸出罐中并与另外研磨的组合物混合; 和（f）通过用电解质和电解提取法分离步骤（c）中获得的有机相的金属。

    Process for leaching zinc from partially desulfurized zinc concentrates by sulfuric acid
    72.
    发明授权
    Process for leaching zinc from partially desulfurized zinc concentrates by sulfuric acid 失效
    通过硫酸从部分脱硫锌精矿中浸出锌的方法

    公开(公告)号：US4778520A

    公开(公告)日：1988-10-18

    申请号：US30114

    申请日：1987-03-26

    申请人： Donald R. Spink ,  Jerry Y. Stein

    发明人： Donald R. Spink ,  Jerry Y. Stein

    IPC分类号： C22B19/00 ,  C22B19/02 ,  C22B19/34

    CPC分类号： C22B19/22 ,  C22B19/02 ,  C22B19/34 ,  Y02P10/234

    摘要： A process comprises leaching zinc oxide either separately or in conjunction with iron oxides from a partially desulfurized zinc bearing sulfide ore of concentrate. The ore is pretreated to eliminate in a controlled manner sulfur-sulfur-sulfide in the ore yet leaving sufficient residual sulfur-sulfide in the material such that iron values are maintained substantially wholly in the ferrous state, while converting zinc sulfide to zinc oxide without formation of FeO-ZnO complexes. The partially desulfurized material may be selectively leached with a sulfuric acid containing solution under neutral leach conditions to dissolve thereby preferentially the zinc oxide over the iron oxide. Alternatively the material may be leached with a higher concentration of sulfuric acid containing solution to dissolve preferentially zinc oxide and iron oxide simultaneously. The leach liquor may be subsequently treated to electrolytically remove zinc.

    摘要翻译： 一种方法包括将氧化锌单独或与来自部分脱硫的含锌硫化矿矿石的铁氧化物一起浸出。 矿石被预处理以在受精的方式消除矿石中的硫 - 硫硫化物，但在材料中留下足够的残留硫硫化物，使得铁值基本上完全维持在亚铁状态，同时将硫化锌转化为氧化锌而不形成 的FeO-ZnO复合物。 部分脱硫的材料可以在中性浸出条件下用含硫酸溶液选择性浸出，从而优先氧化氧化锡上的氧化锌溶解。 或者，材料可以用较高浓度的含硫酸溶液浸出，同时优先溶解氧化锌和氧化铁。 随后可以处理浸出液以电解除去锌。

    Process for the recovery of copper and zinc values from sulphidic ore
    75.
    发明授权
    Process for the recovery of copper and zinc values from sulphidic ore 失效
    从硫化矿中回收铜和锌的过程

    公开(公告)号：US4279867A

    公开(公告)日：1981-07-21

    申请号：US129926

    申请日：1980-03-13

    申请人： Donald R. Weir

    发明人： Donald R. Weir

    IPC分类号： C22B19/00 ,  B03B9/00 ,  B03D1/02 ,  B03D1/06 ,  C22B15/00 ,  C22B19/02 ,  C22B19/20 ,  C01G9/06

    CPC分类号： B03D1/06 ,  B03B9/00 ,  B03D1/02 ,  C22B19/22 ,  B03D1/04 ,  Y02P10/234

    摘要： A process for the recovery of copper and zinc values from copper and zinc containing sulphidic ore includes subjecting ground ore to a flotation operation. An initial copper concentrate is floated in a first flotation step, and the initial copper concentrate is fed to a second flotation step to float a relatively zinc free copper concentrate. Remaining ore from the first flotation step is fed to a third flotation step to float an initial zinc concentrate, and remaining ore from the third flotation step is fed to a fourth flotation step to float a copper and zinc containing material. An intermediate concentrate containing from about 5 to about 25% copper and from about 2 to about 25% zinc, with a total of at least about 12% copper and zinc, is produced by selecting at least the remaining ore from the second flotation step, and a zinc concentrate containing at least about 20% zinc is produced by at least selecting a portion of the initial zinc concentrate.

    摘要翻译： 从含铜和锌的硫化矿石中回收铜和锌的值的方法包括对地矿进行浮选操作。 将初始铜精矿漂浮在第一浮选步骤中，并将初始铜精矿进料至第二浮选步骤以漂浮相对无锌的铜精矿。 将来自第一浮选步骤的剩余矿石进料到第三浮选步骤以漂浮初始锌精矿，并将来自第三浮选步骤的剩余矿石进料至第四浮选步骤以漂浮含铜和锌的材料。 通过从第二浮选步骤中选择至少剩余的矿石来生产含有约5至约25％的铜和约2至约25％的锌，总共至少约12％的铜和锌的中间浓缩物， 并且通过至少选择一部分初始锌精矿来生产含有至少约20％锌的锌精矿。