公开(公告)号：US20110174113A1

公开(公告)日：2011-07-21

申请号：US12688979

申请日：2010-01-18

申请人： Geoffrey Motteram ,  Michael Ryan

发明人： Geoffrey Motteram ,  Michael Ryan

IPC分类号： C22B23/00

CPC分类号： C22B23/043 ,  C22B3/08 ,  C22B3/22 ,  Y02P10/234

摘要： Nickel is recovered from a nickeliferous ore, where the ore includes impurities in the form of metals other than nickel and cobalt. The ore is subjected to atmospheric leaching using sulphuric acid to dissolve nickel and cobalt from the ore and produce a leach liquor. The sulphuric acid is regenerated by rapidly heating the leach liquor to a temperature in excess of 120° C. to produce a slurry including sulphuric acid and precipitated oxides of impurities present in the leach liquor, and separating the precipitated oxides from the slurry to produce a clarified acid rich liquor stream for recycle to leaching.

摘要翻译： 镍从含镍矿石中回收，其中矿石包括镍和钴以外的金属形式的杂质。 使用硫酸对矿石进行大气浸出，从矿石中溶解镍和钴，生成浸出液。 通过将浸出液快速加热到超过120℃的温度来再生硫酸，以产生包含存在于浸出液中的硫酸和沉淀的杂质的杂质的浆料，并将沉淀的氧化物与浆料分离以产生 澄清含酸的液体物流，以循环浸出。