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    Production of copper and sulfur from copper-iron sulfides
    2.
    发明授权
    Production of copper and sulfur from copper-iron sulfides 失效
    从铜 - 硫化铁生产铜和硫

    公开(公告)号：US3964901A

    公开(公告)日：1976-06-22

    申请号：US408132

    申请日：1973-10-19

    申请人： Godefridus Maria Swinkels ,  Robert Arthur Furber ,  Edward Francis Godfrey Milner ,  Roman Michael Genik-Sas-Berezowsky ,  Charles Ray Kirby

    发明人： Godefridus Maria Swinkels ,  Robert Arthur Furber ,  Edward Francis Godfrey Milner ,  Roman Michael Genik-Sas-Berezowsky ,  Charles Ray Kirby

    IPC分类号： C22B1/11 ,  C22B3/08 ,  C22B15/00 ,  C01B17/06 ,  C22B15/12 ,  C22B61/00

    CPC分类号： C22B15/0071 ,  C22B1/11 ,  C22B15/0021 ,  C22B3/08 ,  Y02P10/216 ,  Y02P10/234 ,  Y02P10/236

    摘要： A hydrometallurgical process for treating iron containing metal sulfides for rendering iron and non-ferrous metal values active and amenable for selective extraction and separate recovery. Sulfur values can be controllably produced as elemental sulfur or as sulfuric acid to supply acid requirements of the process, while substantially obviating the discharge of sulfur-containing gases to the atmosphere. Ores and concentrates of the sulfides are thermally activated by sequentially heating and reducing said sulfides in a countercurrent flow of heating and reducing gases respectively in a reactor whereby the reaction products of the reducing gas and sulfides, together with liberated labile sulfur, are controllably combusted with oxygen to satisfy heat requirements of the thermal activation process and to convert sulfur values to SO.sub.2 gas. The activated sulfides are subjected to an acid leach in aqueous sulfuric acid for production of ferrous sulfate and evolution of H.sub.2 S gas which are separated from the solid sulfide residue containing concentrated non-ferrous metal values. The ferrous sulfate is oxidized and hydrolysed to precipitate the iron, which is removed from the system, and to regenerate sulfuric acid. At least a portion of the SO.sub.2 gas from said heating step and at least a portion of the H.sub.2 S from the acid leach are converted to sulfuric acid to satisfy the acid requirements of the process, and remaining SO.sub.2 is combined and catalytically reacted with remaining H.sub.2 S to produce elemental sulfur.The solids residue from the acid leach is subsequently subjected to further treatment for recovery of metal values.

    摘要翻译： 一种用于处理含铁金属硫化物的湿法冶金工艺，用于使铁和有色金属价值活跃并适于选择性萃取和分离回收。 硫值可以可控地作为元素硫或硫酸生产，以提供该方法的酸需求，同时基本上消除含硫气体排放到大气中。 硫化物的矿石和浓缩物通过在反应器中分别依次加热和还原所述硫化物的加热和还原气体的流动而热活化，由此还原气体和硫化物的反应产物连同释放的不稳定硫一起可控地与 氧气以满足热活化过程的热需求并将硫值转化为SO 2气体。 活化的硫化物在硫酸水溶液中进行酸浸，用于生产硫酸亚铁，并从含有浓缩有色金属金属值的固体硫化物残渣中分离出H 2 S气体。 硫酸亚铁被氧化并水解，使铁从体系中除去，再生硫酸。 来自所述加热步骤的SO 2气体的至少一部分和来自酸浸出物的至少一部分H 2 S被转化为硫酸以满足该方法的酸需求，并且将剩余的SO 2组合并与剩余的H 2 S催化反应 以产生元素硫。