公开(公告)号：US5482534A

公开(公告)日：1996-01-09

申请号：US211916

申请日：1994-04-20

申请人： Rodney L. Leonard ,  John G. Whellock

发明人： Rodney L. Leonard ,  John G. Whellock

IPC分类号： C22B11/00 ,  C22B3/06 ,  C22B3/44 ,  C22B15/00 ,  C22B19/00 ,  C22B19/30 ,  C22B23/00 ,  C22B30/04

CPC分类号： C22B15/0073 ,  C22B11/04 ,  C22B19/22 ,  C22B19/30 ,  C22B23/0438 ,  C22B3/065 ,  C22B30/04 ,  Y02P10/234 ,  Y02P10/236

摘要： A process suitable for the extraction or recovery of metal values from arsenic containing feeds and including the steps of: a) treating the feed with a nitric acid-containing leachant solution in order to dissolve the desired metals; b) adding a source of iron (III) to the leachant solution whereby to oxidise arsenic (III) in solution to arsenic (V); c) adding a neutralising agent to the leachant solution whereby to precipitate arsenic as arsenic (V); d) separating the arsenic (V) precipitate from the leachant solution; and e) recording metal values from the leachant solution.

摘要翻译： 一种适用于从含砷饲料提取或回收金属值的方法，包括以下步骤：a）用含硝酸的浸出剂溶液处理饲料以溶解所需的金属; b）向浸出液中加入铁（III）源，从而将溶液中的砷（III）氧化成砷（V）; c）向浸出液中加入中和剂，由此将砷沉淀为砷（V）; d）从浸出液中分离出砷（V）沉淀物; e）从浸出液中记录金属值。