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    Process for recovering lead from lead-containing raw materials
    1.
    发明授权
    Process for recovering lead from lead-containing raw materials 失效
    从含铅原料中回收铅的工艺

    公开(公告)号：US5356455A

    公开(公告)日：1994-10-18

    申请号：US116321

    申请日：1993-09-03

    申请人： Nikolai V. Khodov ,  Mikhail P. Smirnov ,  Oleg K. Kuznetsov ,  Konstantin M. Smirnov

    发明人： Nikolai V. Khodov ,  Mikhail P. Smirnov ,  Oleg K. Kuznetsov ,  Konstantin M. Smirnov

    IPC分类号： C22B13/00 ,  C22B7/00 ,  C22B13/02

    CPC分类号： C22B13/02 ,  Y02P10/214

    摘要： There is proposed a process for recovering lead, comprising the steps of: feeding molten caustic soda, lead-containing feed and an oxygen-containing gas into a reaction some having a temperature of 600.degree. to 700.degree. C. as a result of which there are obtained lead metal withdrawn from the process and a melt containing sodium sulphate, zinc and copper sulphides, and gangue. The melt is discharged from the reaction zone of subjected to a first leaching operation to obtain, as a result, a slurry representing a mixture of solid particles of sodium sulphate, zinc and copper sulphides, gangue and an aqueous solution containing essentially caustic soda. Further on, the slurry is filtered to produce a concentrated aqueous solution containing essentially caustic soda and a solid residue. The concentrated caustic soda solution is subjected to thickening by evaporation and the resulting caustic soda melt is fed into the reaction zone. The solid residue is subjected to a second leaching operation to obtain suspension which is filtered to ultimately produce a cake representing solid particles of zinc and lead sulphides, and gangue having, adsorbed on their surface, a sodium sulphate solution, and an aqueous solution containing essentially sodium sulphate. Said solution is subjected to electrochemical treatment to obtain sulphuric acid withdrawn from the process, and alkali which is fed to said first leaching operation. The cake is washed to obtain a sodium sulphate solution which is fed to said second leaching operation.

    摘要翻译： 提出了一种回收铅的方法，包括以下步骤：将熔融的苛性钠，含铅进料和含氧气体进料到温度为600℃至700℃的反应物中，结果是在那里 得到从该方法中取出的铅金属和含有硫酸钠，锌和硫化铜和g石的熔体。 熔体从进行第一浸出操作的反应区排出，结果得到代表硫酸钠，锌和硫化铜的固体颗粒，脉石和含有基本上苛性苏打的水溶液的混合物的浆料。 此外，将浆料过滤以产生基本上含有苛性钠和固体残余物的浓缩水溶液。 浓缩的苛性钠溶液通过蒸发进行增稠，并将所得的苛性钠熔体进料到反应区中。 将固体残余物进行第二次浸出操作以获得悬浮液，其被过滤以最终产生表示锌和硫化铅的固体颗粒的滤饼，并且在其表面上吸附有硫酸钠溶液和基本上含有硫酸钠的水溶液的g石 硫酸钠。 对所述溶液进行电化学处理以获得从该方法中取出的硫酸，以及将被供给到所述第一浸出操作的碱。 将滤饼洗涤以获得供给到所述第二浸出操作的硫酸钠溶液。

    Method of recovering lead from recycable lead-containing raw material
    2.
    发明授权
    Method of recovering lead from recycable lead-containing raw material 失效
    从可回收的含铅原料中回收铅的方法

    公开(公告)号：US5429661A

    公开(公告)日：1995-07-04

    申请号：US67225

    申请日：1993-05-26

    申请人： Nikolai V. Khodov ,  Oleg K. Kuznetsov

    发明人： Nikolai V. Khodov ,  Oleg K. Kuznetsov

    IPC分类号： C22B3/12 ,  C22B7/00 ,  C22B13/00 ,  H01M10/54

    CPC分类号： C22B13/045 ,  H01M10/54 ,  Y02P10/212 ,  Y02W30/84

    摘要： A method of recovering lead is proposed, wherein preliminarily crushed recycable raw material composed of spent lead-sulphuric acid storage batteries is subjected to treatment with an alkaline solution, as a result of which metallic lead, taken out of the process, and pulp, to be subjected to mechanical separation, are obtained. As a result of the separation, a lead-containing (as inclusions) polymer material and a suspension, which is a mixture of a sodium sulfate solution having lead oxide particles therein, are obtained. The suspension is separated, as a result of which lead oxides are taken out of the process, while the sodium sulfate solution is subjected to electrochemical treatment, as a result of which sulphuric acid and an alkaline solution are obtained, the alkaline solution being fed for treatment of the lead-containing (as inclusions) polymer material. As a result the amount of lead in the polymer material is reduced and an alkaline solution is obtained comprising sodium sulfate and sodium plumbate and is fed for treatment of the recyclable raw material.

    摘要翻译： 提出了一种回收铅的方法，其中将由废铅酸蓄电池组成的预先破碎的可回收原料用碱性溶液处理，其中将从该方法中取出的金属铅和纸浆至 进行机械分离。 作为分离的结果，获得含铅（作为夹杂物）聚合物材料和悬浮液，其是其中具有氧化铅颗粒的硫酸钠溶液的混合物。 分离悬浮液，由此将铅氧化物从该方法中取出，同时对硫酸钠溶液进行电化学处理，结果获得硫酸和碱性溶液，将碱性溶液加入 处理含铅（作为夹杂物）聚合物材料。 结果，聚合物材料中的铅的量减少，得到包含硫酸钠和铅酸钠的碱性溶液，并且用于处理可再循环的原料。