Recently, the Institute of Mineral Comprehensive Utilization of the Chinese Academy of Geological Sciences conducted comprehensive utilization of new technologies for the Xiasai silver polymetallic ore deposit in Batang County, Sichuan Province, and Baiyinping Silver-copper-lead-zinc polymetallic deposit in Yunnan Province. A total of 47 minerals were found in the samples, among which there were 5 silver minerals, many types of elements, and complex inlaid minerals, which made it more difficult to study mineral processing techniques. Joss Stick,Coil Stick,Incense Sticks,Natural Incense Sticks Xinhui Gangzhou Flavors&Fragrance Co.,Ltd , https://www.xhgzff.com
The main carrier metals of silver are galena and lead oxide minerals, followed by sphalerite, arsenopyrite and pyrite. Lead minerals, zinc minerals, and arsenic minerals have close symbiosis and complex mosaic relationships. It is difficult to obtain a single qualified lead, zinc, and silver mineral product by using only physical mineral processing methods. The adoption of a combined beneficiation and metallurgical process is an effective method for the development and utilization of this mineral.
Xiasai silver lead-zinc mixed ore adopts grinding-all mixed flotation-sulfation roasting-dilute sulfuric acid leaching to separate silver, zinc and lead. The qualified silver-bearing lead concentrate and high quality zinc and silver products are obtained. The total yields of silver, lead, and zinc were 97.07%, 99.61%, and 90.93%, respectively.
BAIYAOPING silver multi-metal ore beneficiation using full-mixed flotation-selective chlorination-zinc leaching of mixed concentrates-selective chlorination of leaching lead and partial silver-extraction of elemental sulfur-pretreatment-chlorination of copper and some silver The process, supplemented by sedimentation, substitution, extraction and other metallurgical separation methods, solved the problem of separation and extraction of valuable metals such as copper, lead, zinc and silver. The metal leaching rate was 5.12% for copper and 98.5% for lead. 99.73% of zinc and 97.28% of silver were obtained. The extraction rate of elemental sulfur was 73.72%. Lead chloride and elemental sulfur products with a purity of more than 99%, sponge copper, and sponge silver were obtained.
In addition, the project "three wastes" is easy to handle. Metallurgical process The process water is recycled and no production wastewater is discharged. The final leaching slag yield is only 8.3%. The waste slag discharge is small. The exhaust gas is mainly a small amount of chlorine gas escaping during the leaching process, which can be controlled by selecting suitable equipment and controlling the process operation. , Improve the utilization of chlorine gas, reduce the amount of chlorine emissions, and the leaching of chlorine gas using lye washing tower processing, so as to achieve environmental protection requirements.
According to reports, the technological achievements have been developed and utilized in six silver-bearing copper mines in Jinchanggouliang, Inner Mongolia, and Batang, Sichuan, making it possible to obtain more than 4 million tons of copper-silver multi-metal refractory resources. use efficiently. Xiasai silver lead-zinc mixed concentrate metallurgical processing, processing 20 tons of mixed concentrates on a daily basis, can create 669.84 million yuan of tax revenue, with good economic benefits. (Wang Qiongjie)