论文部分内容阅读
美国阿里佐納州拟兴建一个新型的炼銅厂,用氢还原硫酸銅溶液的化学方法生产无氧銅粉。該法与其他化学精炼铜过程的重大区別在于,以硫酸代替氨—炭酸氨进行浸出。这样可避免氨副产品的形成,減少投資。預計該厂年产銅8250吨。該法先用2.5(克/升)硫酸浸出氧化銅矿,所得稀溶液中的銅用鈇層置換,海綿銅的品位为84％(按
US Ali Zina states intends to build a new type of copper smelter, using hydrogen reduction of copper sulfate solution chemical production of oxygen-free copper powder. The major difference between this method and other chemical refined copper processes is the leaching with sulfuric acid instead of ammonia-ammonia carbonate. This will avoid the formation of ammonia by-products, reduce investment. The plant is expected to produce 8250 tonnes of copper a year. The method first leach copper oxide ore with 2.5 (g / L) sulfuric acid, and the copper in the resulting dilute solution is replaced by a layer of copper, the grade of sponge copper being 84%