Roasting of mixed sulphide ores or concentrates
    4.
    发明授权
    Roasting of mixed sulphide ores or concentrates 失效
    混合硫化矿石或浓缩物的焙烧

    公开(公告)号:US4478794A

    公开(公告)日:1984-10-23

    申请号:US471709

    申请日:1983-03-03

    IPC分类号: C01G9/02 C22B1/02 C22B1/24

    CPC分类号: C01G9/02 C22B1/02 C22B1/2406

    摘要: In the roasting (oxidation) of mixed zinc sulphide/lead sulphide concentrates, to give an oxidic product for reduction, improved sulphur elimination and reduced lead volatilization are achieved by mixing 2-20% by weight of zinc oxide with the mixed sulphide materials, forming pellets of 2-15 mm diameter and roasting these under controlled oxidation conditions, firstly at a lower temperature and then at a higher temperature; preferably at 850.degree.-950.degree. C. for the first stage and at 950.degree.-1050.degree. C. for the last stage.

    摘要翻译: 在混合硫化锌/硫化铅浓缩物的焙烧(氧化)中,为了得到还原的氧化产物,通过将2-20重量%的氧化锌与混合的硫化物材料混合来形成改善的硫消除和减少的铅挥发,形成 直径2-15mm的颗粒,并在受控氧化条件下焙烧,首先在较低的温度,然后在较高的温度下焙烧; 优选在850-950℃进行第一阶段,最后在950-1050℃。