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    • 4. 发明授权
    • Method for producing copper in hydrometallurgical process
    • 在湿法冶金工艺中生产铜的方法
    • US6007600A
    • 1999-12-28
    • US139831
    • 1998-08-25
    • Olli HyvarinenMatti Hamalainen
    • Olli HyvarinenMatti Hamalainen
    • C22B15/00C21B15/00C01G3/10C25B1/02C25B1/16C25B1/34
    • C22B15/0089C22B15/0069Y02P10/236
    • The invention relates to a method for producing copper in a hydrometallurgical process from copper-bearing raw materials, such as sulfidic concentrates. The concentrate is leached in a leaching stage of several steps into a chloride-based solution. The copper-bearing solution obtained from this leaching is subjected to reduction and solution purification, whereafter the copper contained in the solution is precipitated as copper oxidule by means of alkali hydroxide. The alkali chloride solution formed in the production of copper oxidule is fed into chloride alkali electrolysis, where it is regenerated back into alkali hydroxide. The hydrogen generated in the electrolysis is used in the reduction of copper oxidule and in other reduction stages of the process. The formed chlorine is used in the leaching of the raw material. When necessary, the reduced copper that is in a granular or pulverous form is further subjected to melting and casting in order to produce commercial-grade copper.
    • 本发明涉及一种在含铜原料如硫化氢精矿的湿法冶金工艺中生产铜的方法。 将浓缩物在几步骤的浸出阶段浸出到基于氯化物的溶液中。 将由该浸出获得的含铜溶液进行还原和溶液净化,然后通过碱金属氢氧化物将铜溶液中的铜沉淀为铜氧化物。 在生产铜氧化物中形成的碱金属氯化物溶液进料到氯化碱电解中,在其中再生成碱性氢氧化物。 在电解中产生的氢被用于铜氧化物还原过程的其它还原阶段。 形成的氯用于原料的浸出。 当需要时,还可以将颗粒状或粉状形式的还原铜进行熔融浇铸,以生产商业级铜。
    • 10. 发明申请
    • Method for Recovering Gold
    • 恢复黄金的方法
    • US20070245856A1
    • 2007-10-25
    • US11579092
    • 2005-04-25
    • Matti HamalainenOlli Hyvarinen
    • Matti HamalainenOlli Hyvarinen
    • C22B9/00
    • C22B11/044C22B11/06Y02P10/214
    • The invention relates to a method for recovering gold from an intermediate product or residue containing sulphur and iron generated in the leaching of a sulphidic raw material. The recovery of gold and the other valuable metals in the raw material takes place in a chloride environment. The gold contained in the intermediate product or residue is leached with divalent copper and chlorine in a copper (II) chloride—sodium chloride solution in conditions where the oxidation-reduction potential is in the range of 650-750 mV and the pH between 1 and 1.6. The acid generated during the feed of chlorine is neutralized with a suitable alkali. Neutralization avoids the costs of dissolving the iron.
    • 本发明涉及从在硫化物原料浸出中产生的含硫和铁的中间产物或残余物中回收金的方法。 原料中金和其他有价值金属的回收发生在氯化物环境中。 在氧化还原电位在650-750mV的范围内,pH在1和1之间的条件下,氯化铜(II) - 氯化钠溶液中的中间产物或残余物中包含的金被二价铜和氯浸出 1.6。 在氯进料中产生的酸用合适的碱中和。 中和避免了铁的溶解成本。