Method of reprocessing jarosite-containing residues
    1.
    发明授权
    Method of reprocessing jarosite-containing residues 失效
    后处理包含黄钾铁矾渣的方法

    公开(公告)号:US5453253A

    公开(公告)日:1995-09-26

    申请号:US602017

    申请日:1990-10-23

    CPC分类号: C22B19/22 Y02P10/234

    摘要: For reprocessing of jarosite-containing residues to provide usable products, the jarosite-containing residues and concentrates which contain zinc sulfide are stirred in dilute sulfuric acid, which contains 40 to 100 g/l free sulfuric acid, in an autoclave under an oxygen partial pressure of at least 1,000 kPa and at a temperature from 130.degree. to 170.degree. C., the iron contents and the zinc contents of the residue and of the concentrate which contains zinc sulfide are substantially dissolved, flashing is effected and is succeeded by a separation of solution and solids, the solution is fed to the leaching circuit of a plant for the electrolytic production of zinc with precipitation of iron as hematite, the elemental sulfur is separated from the solids and the hematite residue is supplied to a further utilization.

    摘要翻译: 对于含黄钾矾渣的后处理以提供可用的产品,将包含硫化锌的含黄钾铁矾的残渣和浓缩物在氧分压下在高压釜中在含有40-100g / l游离硫酸的稀硫酸中搅拌 至少1000kPa,在130℃至170℃的温度下,残留物和含有硫化锌的浓缩物的铁含量和锌含量基本上溶解,闪烁,并通过分离 溶液和固体,将溶液进料到用于电解生产锌的设备的浸出回路中,铁沉淀为赤铁矿,元素硫与固体分离,并且赤铁矿残渣被供应以进一步利用。