Two stage sulfuric acid leaching of sea nodules
    3.
    发明授权
    Two stage sulfuric acid leaching of sea nodules 失效
    两级硫酸浸出海结节

    公开(公告)号:US4046851A

    公开(公告)日:1977-09-06

    申请号:US697957

    申请日:1976-06-21

    CPC分类号: C22B47/0063 Y10S423/04

    摘要: A process for extracting metal values from manganiferous sea nodules is provided in which nickel, copper, and cobalt values are selectively leached in a sulfuric acid medium in two stages, the first stage being effected at a temperature up to about 100.degree. C and to a final pH of not less than about 1.5 and the second stage being effected at a temperature of about 160.degree. C to about 260.degree. C and at an initial pH of not less than about 1.5.

    摘要翻译: 提供了一种从锰矿海结核中提取金属值的方法,其中镍,铜和钴的值在两个阶段中在硫酸介质中选择性浸出,第一阶段在高达约100℃的温度下进行, 最终pH不低于约1.5,第二阶段在约160℃至约260℃的温度下进行,初始pH不低于约1.5。