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公开(公告)号：US5108497A
公开(公告)日：1992-04-28
申请号：US578013
申请日：1990-09-05
CPC分类号： C22B58/00 , C22B7/02 , Y02P10/212 , Y10S75/961
摘要： Indium-containing feedstocks, such as flue dusts from a refining or smelting process, are treated to increase the concentration of indium and at the same time to reduce the concentrations of lead, copper, and arsenic. The flue dusts are treated in a sodium-doped lead bath at temperatures of 675.degree. to 800.degree. C. Soda ash in the amount of 15 to 35 weight percent is blended with the feed stock and added to the sodium-doped lead bullion. The sodium reacts with the dusts to form a liquid dross, which is removed, cooled, and crushed. The powdered dross is water leached to remove the sodium salts. The indium remains in the filler cake and can be processed by conventional methods for the recovery of indium. About 95% of the indium reports to the filter cake, while lead retention in the filter cake is only about 5-15% of the initial lead content in the dust. A majority of the zinc also reports to the filter cake. A majority of the lead, copper, and silver report to the bullion, and a majority of the arsenic reports to the filtrate. Sodium consumption is about one pound of sodium for each five to ten pounds of feedstock.
摘要翻译： 处理含铟原料，例如来自精炼或熔炼过程的烟道灰，以增加铟的浓度，同时降低铅，铜和砷的浓度。 烟道灰尘在钠掺杂铅浴中在675℃至800℃的温度下处理。以15-35重量％的量将纯碱与原料混合并加入到钠掺杂的铅块中。 钠与粉尘反应形成液体渣，将其除去，冷却并粉碎。 粉状浮渣是水淋洗以除去钠盐。 铟保留在填料块中，并且可以通过用于回收铟的常规方法进行处理。 铟的约95％报告在滤饼中，而滤饼中的铅保留量仅为灰尘初始含铅量的约5-15％。 大多数锌还报告过滤饼。 大多数铅，铜和银向金块报告，大多数砷报告给滤液。 每5至10磅原料，钠消耗量约为1磅。
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公开(公告)号：US5242658A
公开(公告)日：1993-09-07
申请号：US909694
申请日：1992-07-07
CPC分类号： C22C13/00 , B23K35/262
摘要： A low melting point solder alloy comprising effective amounts of tin, zinc and indium.
摘要翻译： 包含有效量的锡，锌和铟的低熔点焊料合金。
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公开(公告)号：US4069294A
公开(公告)日：1978-01-17
申请号：US679106
申请日：1976-04-21
申请人： Laurence G. Stevens
发明人： Laurence G. Stevens
IPC分类号： C01G3/14 , C22B1/00 , C22B3/00 , C22B3/14 , C22B15/00 , C22B23/00 , C22B47/00 , C01G45/00 , C01G51/12 , C01G53/12
CPC分类号： C22B47/0072 , C22B1/00 , C22B15/0021 , C22B23/005 , C22B23/0446 , C22B3/14 , C22B47/00 , Y02P10/234
摘要： In the hydrometallurgical recovery of metal values from ores and the like in which a metal bearing source is reduced in the presence of at least one additive at temperatures ranging from about 500.degree. to about 900.degree. C. and thereafter extracted, the improvement of said process comprises pretreating a portion of process tails from a preceding run with the additive prior to the reducing roast. The additive which is used to pretreat the minor portion of the feed stock may comprise that which is recovered from the roaster offgas and admixed with a portion of the tail stream from the extraction step.
摘要翻译： 在从约500℃至约900℃的温度范围内在至少一种添加剂存在下金属轴承源减少的矿石等进行的金属冶金回收中，然后提取所述方法 包括在还原烘烤之前用添加剂预处理来自前一运行的一部分处理尾部。 用于预处理原料的次要部分的添加剂可以包括从焙烧炉废气中回收的添加剂，并与提取步骤的尾流的一部分混合。
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