公开(公告)号：US06319483B1

公开(公告)日：2001-11-20

申请号：US09481506

申请日：2000-01-12

申请人： Yoshito Kudo ,  Yukiko Maruyama

发明人： Yoshito Kudo ,  Yukiko Maruyama

IPC分类号： C22B5800

CPC分类号： C22B3/44 ,  C22B19/26 ,  C22B58/00 ,  C25C1/16 ,  Y02P10/234

摘要： It is possible to recover gallium and indium efficiently and at a low cost from solutions containing traces of gallium and indium. In particular, jarosite is produced by performing a specific treatment on a solution obtained by a two-stage neutralization treatment during the zinc leached residue treatment step of wet zinc refining, or on another solution containing traces of gallium and indium; the gallium and indium are separated and concentrated; an alkali is added to the jarosite; and the gallium is separated and concentrated by leaching. Calcium hydroxide or magnesium hydroxide is optionally added to the jarosite leached solution to perform purifying, sulfuric acid is added to the purified solution, neutralization is performed, basic gallium sulfate is precipitated, the precipitate is subjected to alkali leaching, and the gallium in the leached solution is electrolytically extracted, yielding metallic gallium.

摘要翻译： 从含有痕量镓和铟的溶液中可以有效地以低成本回收镓和铟。 特别地，通过对在锌精矿的锌浸出残渣处理工序中或通过含有痕量的镓和铟的另一种溶液进行两级中和处理得到的溶液进行特定处理而制造黄钾铁矾; 分离并浓缩镓和铟; 在黄钾铁矾中加入碱; 通过浸出分离并浓缩镓。 将氢氧化钙或氢氧化镁任选加入到黄钾铁矾浸出溶液中进行纯化，向纯化溶液中加入硫酸，进行中和，碱式硫酸镓沉淀，析出物进行碱浸出，浸出后的镓 电解提取溶液，产生金属镓。