Precipitation of filterable nickel and/or cobalt sulfides from acid
solutions
    12.
    发明授权
    Precipitation of filterable nickel and/or cobalt sulfides from acid solutions 失效
    从酸溶液中沉淀出可过滤的镍和/或硫化钴

    公开(公告)号:US4073860A

    公开(公告)日:1978-02-14

    申请号:US381861

    申请日:1973-07-23

    摘要: A process for the precipitation of metallic sulfides, e.g., nickel, cobalt or zinc sulfides, from aqueous metal-ion-containing solution comprising passing hydrogen sulfide through the metal-containing solution while the solution is at a temperature of about 75.degree. C. and at a pH of about 2 to about 3 and maintaining said pH during the time of hydrogen sulfide addition by continuous addition of alkali to the solution. The precipitated metal sulfide is characterized by a relatively large particle size by a high settling rate and by ease of filterability.

    摘要翻译: 一种从含有金属离子的溶液中沉淀金属硫化物(例如镍,钴或硫化锌)的方法,包括使硫化氢通过含金属溶液,同时溶液在约75℃的温度下, 在约2至约3的pH下,并且在硫化氢加入期间通过向溶液中连续加入碱来维持所述pH。 沉淀的金属硫化物的特征在于通过高沉降速率和易过滤性而具有相对大的粒度。

    Method for recovering scandium
    17.
    发明授权

    公开(公告)号:US11214849B2

    公开(公告)日:2022-01-04

    申请号:US16077821

    申请日:2017-02-21

    摘要: A method for recovering scandium, by which scandium is able to be recovered from nickel oxide ore. The present invention comprises: a leaching step S1 for obtaining a leachate by leaching a nickel oxide ore containing scandium with use of sulfuric acid; a neutralization step by adding a neutralizing agent thereto; a sulfurization step by adding a sulfurizing agent to the post-neutralization solution; an ion exchange step by bringing the post-sulfurization solution into contact with a chelating resin; a dissolution step by obtaining a precipitate of scandium hydroxide by adding an alkali into the scandium eluent, and subsequently adding an acid solution to the scandium hydroxide; a solvent extraction step by bringing the scandium acid dissolution liquid into contact with a neutral extractant; and a scandium recovery step by adding oxalic acid to the extraction residue and subsequently roasting the salt of scandium oxalate.

    Process for Heap Leaching of Nickeliferous Oxidic Ores
    20.
    发明申请
    Process for Heap Leaching of Nickeliferous Oxidic Ores 审中-公开
    含镍氧化物矿石的浸出过程

    公开(公告)号:US20110150729A1

    公开(公告)日:2011-06-23

    申请号:US13000493

    申请日:2009-07-02

    申请人: Houyuan Liu

    发明人: Houyuan Liu

    摘要: A process for the recovery of nickel and cobalt from a nickeliferous oxidic ore by heap leaching and/or atmospheric agitation leaching, the process including the steps of: mixing a sulfur containing reductant selected from reductants that do not include copper into a nickeliferous oxidic ore; leaching the reductant/ore mixture with an acidic leach reagent to produce a pregnant leach solution including nickel, cobalt, iron substantially in a ferrous form and other acid soluble impurities; and recovering the nickel and cobalt from the pregnant leach solution.

    摘要翻译: 一种通过堆浸和/或大气搅拌浸出从含镍氧化矿中回收镍和钴的方法,该方法包括以下步骤:将选自不含铜的还原剂的含硫还原剂与含镍氧化矿石混合; 用酸性浸出剂将还原剂/矿石混合物浸出以产生包含镍,钴,铁,基本上为亚铁形式的其它酸溶性杂质的浸出溶液; 并从怀孕浸出溶液中回收镍和钴。