公开(公告)号：US5108497A

公开(公告)日：1992-04-28

申请号：US578013

申请日：1990-09-05

申请人： Nicholas B. Gomez ,  John P. Hager ,  Charles E. T. White ,  Laurence G. Stevens

发明人： Nicholas B. Gomez ,  John P. Hager ,  Charles E. T. White ,  Laurence G. Stevens

IPC分类号： C22B7/02 ,  C22B58/00

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。