Nowadays sulphide ores exploitation is undergoing some troubles, which are hindering the treatment through traditional routes. Bulk flotation followed by a novel hydrometallurgical process can dodge these difficulties. In this work, an integral hydrometallurgical process consists of two ferric leaching steps, followed by a hot brine leaching stage, is proposed to recover target metals from a bulk sulphide concentrate (2.9% Cu, 7.4% Zn, 2.5% Pb, 67 ppm Ag and 37.2% Fe). In the first ferric leaching step, sphalerite, galena and copper secondary sulphides are dissolved and, in the second leaching step, a silver salt is added in order to catalyse chalcopyrite oxidation. If silver salt is added at the beginning of the process, sphalerite passivation is observed, and therefore zinc recovery is not possible. However, when catalytic leaching is performed after a previous ferric leaching, copper and zinc recoveries higher than 95% are achieved. The leached concentrate (0.3% Cu, 0.8% Zn, 3.3% Pb, 1438 ppm Ag, 38.0% Fe and 6.6% S⁰), is treated by a hot brine leaching. When hot brine leaching is performed at high pulp density, elemental sulphur removal is necessary to recover all silver added as a catalyst. Extractions higher than 95% for Zn, Cu and Pb are achieved as well as the total recovery of catalyst. The proposed process is silver surplus; therefore, this agent can be recirculated.

如今，硫化矿石的开采正遇到一些麻烦，这些障碍阻碍了通过传统途径进行处理。浮选后再进行新型湿法冶金工艺可以避免这些困难。在这项工作中，建议采用整体湿法冶金工艺，包括两个铁浸出步骤，然后是热盐水浸出阶段，以从块状硫化物精矿中回收目标金属（2.9％Cu，7.4％Zn，2.5％Pb，67 ppm Ag和37.2％的铁）。在第一个铁的浸出步骤中，闪锌矿，方铅矿和铜硫化物被溶解，在第二个浸出步骤中，添加银盐以催化黄铜矿的氧化。如果在过程开始时添加银盐，则会观察到闪锌矿钝化，因此无法回收锌。然而，在先前的铁浸出后进行催化浸出时，铜和锌的回收率可达到95％以上。浸出精矿（0.3％Cu，0.8％Zn，3.3％Pb，1438 ppm Ag，38.0％Fe和6.6％S⁰）通过热盐水浸提处理。当在高纸浆密度下进行热盐水浸出时，必须去除元素硫以回收所有作为催化剂添加的银。Zn，Cu和Pb的萃取率高于95％，并且催化剂的总回收率更高。提议的过程是白银剩余；因此，该试剂可以再循环。