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    Electrolytic process for the production of tin and tin products
    31.
    发明授权
    Electrolytic process for the production of tin and tin products 失效
    用于生产锡和锡产品的电解过程

    公开(公告)号：US4330377A

    公开(公告)日：1982-05-18

    申请号：US168254

    申请日：1980-07-10

    申请人： John A. Franks, Jr.

    发明人： John A. Franks, Jr.

    IPC分类号： C25B1/00 ,  C25C1/14

    CPC分类号： C25B1/00 ,  C25C1/14

    摘要： Tin ions are provided to the electrolyte-containing cathode compartment of an electrolysis cell in which the anode and cathode compartments are separated by a cationic permselective membrane. The anolyte is generally a mineral acid or tin salt thereof. Operation of the electrolysis cell results in the deposition of tin in a purified form onto the catode which may be recovered as tin metal. Alternatively, the deposited tin and cathode compartment can be washed and the cathode compartment filled with an acid solution. Reversal of the current polarity results in the production of tin salts which may be recovered. Tin salts may also be concurrently anodically produced while tin metal is cathodically electrowinned.

    摘要翻译： 将锡离子提供给电解池的含电解质阴极室，其中阳极和阴极室由阳离子选择性渗透膜分离。 阳极电解质通常是无机酸或其锡盐。 电解池的操作导致将纯化形式的锡沉积到可以作为锡金属回收的聚集体上。 或者，可以洗涤沉积的锡和阴极室，并且阴极室填充有酸溶液。 反转当前的极性导致可能回收的锡盐的生产。 锡盐也可以同时阳极生产，而锡金属是阴极电解的。

    Metal recovery from waste treatment sludges
    32.
    发明授权
    Metal recovery from waste treatment sludges 失效
    废物处理污泥的金属回收

    公开(公告)号：US3953306A

    公开(公告)日：1976-04-27

    申请号：US403147

    申请日：1973-10-03

    申请人： Leslie E. Lancy

    发明人： Leslie E. Lancy

    IPC分类号： C23G1/36 ,  B01J19/00 ,  C01G1/00 ,  C02F1/62 ,  C02F11/00 ,  C22B3/00 ,  C22B7/00 ,  C22B19/30 ,  C25C1/00 ,  C25C1/18 ,  C25D21/18 ,  C01F7/74 ,  C25C1/06 ,  C25C1/12 ,  C25C1/14

    CPC分类号： C22B19/22 ,  C22B19/24 ,  C22B7/006 ,  C22B7/007 ,  Y02P10/234

    摘要： An improved process for preparing highly concentrated salt solutions of metals of high purity from waste metal sludges at superior dissolution rates is achieved by preparing, concentrating and washing the sludge containing insoluble metal hydroxide under specific conditions to safeguard against the solids being exposed to air or dried out. The wet sludge is then dissolved in a dilute acid. The resultant solution can be used directly e.g. as make up in many electrolytic metal finishing processes to compensate for drag out losses occurred, or as the primary metal source in electrolytic processes employing insoluble anodes. Other specific uses for the process include the preparation of aluminum sulfate coagulants.

    摘要翻译： 通过在特定条件下制备，浓缩和洗涤含有不溶性金属氢氧化物的污泥以保护固体暴露于空气或干燥的固体而实现了以优异溶解速率从废金属污泥制备高纯度高纯度金属的高浓度盐溶液的改进方法。 出来 然后将湿污泥溶解在稀酸中。 所得溶液可以直接使用。 作为在许多电解金属整理工艺中弥补补偿发生的拖出损失，或作为使用不溶性阳极的电解工艺中的主要金属源。 该方法的其他具体用途包括制备硫酸铝凝结剂。