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    Extracting metal values from metal containing particles
    2.
    发明公开
    Extracting metal values from metal containing particles 失效
    Gewinnung von Metallen aus Metallpartikeln。

    公开(公告)号：EP0209272A1

    公开(公告)日：1987-01-21

    申请号：EP86304891.4

    申请日：1986-06-25

    申请人： CHEVRON RESEARCH AND TECHNOLOGY COMPANY

    发明人： Marcantonio, Paul J.

    IPC分类号： C22B7/00 ,  C22B3/14 ,  C22B23/00 ,  C22B34/22 ,  C22B34/34 ,  C22B34/36

    CPC分类号： C22B23/0446 ,  C22B7/008 ,  C22B34/22 ,  C22B34/34 ,  C22B34/36 ,  Y02P10/234

    摘要： In a method of extracting metal values selected from cobalt, molybdenum, nickel, tungsten and vanadium from metal-containing particles, the particles are contacted for at least 15 minutes with an aqueous solution of ammonia, an ammonium salt and hydrogen peroxide. The aqueous solution has an initial pH of at least 9.5 and an initial hydrogen peroxide concentration of from 0.02 to 0.2 M, and the pH of the aqueous solution is maintained at 9.5. In the case of metal-containing particles such as spent hydroprocessing catalyst particles containing carbon residue, the particles are first roasted in an oxygen-containing atmosphere at a temperature of from 400 to 600°C, prior to the leaching step.

    摘要翻译： 在从含金属颗粒中提取选自钴，钼，镍，钨和钒的金属值的方法中，将颗粒与氨，铵盐和过氧化氢的水溶液接触至少15分钟。 水溶液的初始pH至少为9.5，初始过氧化氢浓度为0.02至0.2M，水溶液的pH值保持在9.5。 在含有碳的残余加料处理催化剂颗粒等含金属颗粒的情况下，在浸出步骤之前，首先在400〜600℃的含氧气氛中对该颗粒进行焙烧。