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    • 3. 发明申请
    • REFINING ZINC SULPHIDE ORES
    • 精炼锌铁矿
    • WO98036102A1
    • 1998-08-20
    • PCT/AU1998/000094
    • 1998-02-17
    • C22B5/16C22B19/04C22B19/34C22B19/08C22B19/36
    • C22B19/24C22B5/16C22B19/04C22B19/34Y02P10/214Y02P10/232Y02P10/234
    • Zinc values are recovered from zinc sulphide-containing raw material feed by a process which includes the steps of smelting the raw material in the presence of a carbonaceous reductant to substantially reduce the zinc sulphide to metallic zinc, and to vaporize the zinc, thereby producing furnace gases containing zinc vapour and sulphur dioxide; and contacting the furnace gases with free-oxygen containing gas to oxidize the zinc metal and to produce zinc oxide rich crude fume in said furnace gases. The crude fume is separated from the furnace gases and collected and then mixed with concentrated aqueous ammonia/carbon dioxide solution, having a stoichiometric excess of ammonia, to produce a zinc-bearing leach liquor and to leave a solid residue. The leach liquor is separated from the residue, and ammonia then is stripped from the leach liquor to precipitate basic zinc carbonate and to leave a stripped leach liquor. The stripped leach liquor is separated from the basic zinc carbonate, and the latter is calcined to produce a purified zinc oxide product.
    • 通过包括在碳质还原剂存在下熔炼原料以将硫化锌大大降低至金属锌并使锌蒸发的步骤的方法从含硫化锌的原料进料中回收锌值,由此生成炉 含有锌蒸汽和二氧化硫的气体; 并使炉气与含游离氧的气体接触以氧化锌金属,并在所述炉气中产生富含氧化锌的粗烟气。 将粗烟气与炉气分离并收集,然后与化学计量过量的氨的浓氨水/二氧化碳溶液混合,以产生含锌浸提液并留下固体残余物。 将浸出液与残留物分离,然后从浸出液中除去氨,沉淀碱性碳酸锌并离开剥离的浸出液。 将剥离的浸出液从碱式碳酸锌中分离出来,然后煅烧后生成纯化的氧化锌产品。
    • 9. 发明申请
    • METHOD FOR RECOVERING ZINC FROM SOLUTION
    • 从溶液中回收锌的方法
    • WO2017054057A1
    • 2017-04-06
    • PCT/AU2016/050926
    • 2016-09-29
    • METALEACH LIMITEDWELHAM, Nicholas James
    • WELHAM, Nicholas James
    • C22B19/20C22B3/14C22B3/30C22B3/32C22B3/38C22B3/40
    • C22B3/14C22B3/0068C22B19/24Y02P10/234
    • A method for recovering zinc from an aqueous ammoniacal ammonium carbonate zinc solution, the method comprising the steps of: Contacting the aqueous ammoniacal ammonium carbonate zinc solution with an organic solution of a zinc extractant, such that a portion of the zinc is transferred from the aqueous ammoniacal ammonium carbonate zinc solution, producing a zinc-depleted aqueous ammoniacal ammonium carbonate solution and a zinc-enriched organic solution of a zinc extractant; Separating the zinc-enriched organic solution of a zinc extractant from the zinc-depleted aqueous ammoniacal ammonium carbonate solution; Contacting the zinc-enriched organic solution with an aqueous acidic solution, producing a zinc-enriched aqueous acidic solution and a zinc-depleted organic solution of a zinc extractant; and Recovering zinc from the zinc-enriched aqueous acid solution.
    • 一种从氨水碳酸铵锌水溶液中回收锌的方法,所述方法包括以下步骤:使含碳酸铵铵溶液与锌提取剂的有机溶液接触,使得一部分锌从水溶液 氨基碳酸铵锌溶液,产生贫锌的氨水碳酸铵溶液和锌提取剂的富锌有机溶液; 将锌萃取剂的富锌有机溶液与贫锌的氨水碳酸铵溶液分离; 使富锌的有机溶液与酸性水溶液接触,产生富锌的酸性水溶液和锌提取剂的贫锌的有机溶液; 并从锌富集的酸水溶液中回收锌。