-
1.发明授权Process for treating sulfide ores containing gold and/or silver and as accompanying metal at least iron 失效用于处理含有金和/或银的硫化矿石和至少铁的伴随金属的方法
公开(公告)号：US5783158A
公开(公告)日：1998-07-21
申请号：US805462
申请日：1997-02-25
摘要： The ore which contains gold and/or silver and as accompanying metal at least iron is calcined at temperatures in the range from 500.degree. to 900.degree. C. with the addition of oxygen-containing gas. There is obtained a metal-oxide-containing solids mixture and a SO.sub.2 -containing exhaust gas. The solids mixture from the calcination is cooled, the temperature being reduced by at least 50.degree. C. The cooled solids mixture is added to a fluidized-bed reactor, and SO.sub.2 -containing exhaust gas is introduced into the fluidized-bed reactor. In the reactor, metal sulfate is produced in the solids mixture, so that at least 10% of the sulfur content are bound in the exhaust gas. Solids mixture containing metal sulfate is withdrawn from the fluidized-bed reactor, is stirred up with an aqueous acid solution, thereby dissolving metal sulfate. The remaining solids are supplied to a recovery of gold and/or silver.
摘要翻译： 含有金和/或银以及至少铁的伴随金属的矿石在500-900℃的温度下煅烧，同时加入含氧气体。 得到含有金属氧化物的固体混合物和含SO 2的废气。 将来自煅烧的固体混合物冷却，将温度降低至少50℃。将冷却的固体混合物加入流化床反应器中，将含SO 2的废气引入流化床反应器中。 在反应器中，在固体混合物中产生金属硫酸盐，使得至少10％的硫含量结合在废气中。 从流化床反应器中取出含有金属硫酸盐的固体混合物，用酸水溶液搅拌，从而溶解金属硫酸盐。 剩余的固体被提供到金和/或银的回收。
-
公开(公告)号：US5804150A
公开(公告)日：1998-09-08
申请号：US805409
申请日：1997-02-24
摘要： The ore which contains gold and at least one of the metals silver, copper, nickel, zinc or iron is calcined at temperatures in the range from 500.degree. to 900.degree. C. with the addition of oxygen-containing gas, thereby producing a metal-oxide-containing solids mixture and a SO.sub.2 -containing exhaust gas. The SO.sub.2 containing exhaust gas is brought in contact with aqueous solution, thereby producing a sulfite-containing solution. The solids mixture from the calcination is cooled to temperatures in the range from 50.degree. to 300.degree. C. and is stirred up with the sulfite-containing solution. Metal oxides are dissolved, and a sulfate-containing solution os formed. In a first separating zone, the sulfate-containing solution is separated from the solids, and either the solids are supplied to a gold leaching or the sulfate-containing solution is subjected to a further treatment for the separation of nonferrous metals.
摘要翻译： 含有金和银，铜，镍，锌或铁中的至少一种金属的矿石在加入含氧气体的同时在500-900℃的温度下煅烧， 含氧化物的固体混合物和含SO 2的废气。 使含SO 2的废气与水溶液接触，从而产生含亚硫酸盐的溶液。 将来自煅烧的固体混合物冷却至50℃至300℃的温度，并与含亚硫酸盐的溶液一起搅拌。 溶解金属氧化物，形成含硫酸盐溶液。 在第一分离区中，将含硫酸盐的溶液与固体分离，并将固体供应至金浸出，或者将含硫酸盐溶液进一步处理以分离有色金属。
-
搜索结果
2 条记录 (耗时 0.013 秒)
