(Reporter Ji Zhaoning) A few days ago, the “Xinjiang Xingta Cyanide Residue Chlorination and Roasting Multi-element Recovery Industrial Test†project provided by the Beijing General Research Institute of Mining and Metallurgy was driven by Zhaojin Mining Xinjiang Xingta Mining Co., Ltd. Drive ceremony was held. At present, the whole process of the project runs through and operates stably, which has been praised by the owners. The Beijing Mining and Metallurgy Research Institute received a letter of thanks from the owner.
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The industrial test belongs to the "Shandong Gold Resources Comprehensive Utilization Demonstration Base Construction" technical support project, with a design scale of 200t/d. It mainly deals with the tailings after roasting and cyanidation of the Xingta Mining Gold Concentrate. The project adopts mixture granulation—grate drying with rotary kiln—chlorine evaporation from rotary kiln—flue gas washing treatment—the process flow of calcium chloride concentration realizes the comprehensive recycling of various elements such as gold and silver, using coal as the grate The heat source of the drying and rotary kiln is recycled after the concentrated calcium chloride solution is concentrated by the waste heat of the kiln head flue gas, which has the characteristics of low production cost and energy saving. The gold grade of pellets produced after treatment can be reduced to less than 1g/t, the comprehensive recovery rate of gold can reach over 83%, and the comprehensive recovery rate of silver is over 50%. The pellets containing iron and silicon have higher grade and are sold to nearby The cement or building materials companies have truly realized the complete consumption and comprehensive utilization of cyanide tailings. The total investment of the project is about 56 million yuan and the benefit is good. After the project is put into production, it will bring significant economic benefits to the company and eliminate the adverse impact on the environment caused by the long-term storage of cyanide tailings.
The Beijing Research Institute of Mining and Metallurgy has been devoted to the technical research of the comprehensive utilization of cyanid tailings for many years. In recent years, Zhaojin Mining has cooperated with Zhaojin Mining to complete the laboratory exploration test and expand the experimental research. At present, it has mastered the high-temperature chlorination treatment. Gold concentrate cyanide tailings full set of technology. This project is the first industrial application of high-temperature chlorination treatment of gold concentrate cyanide tailings technology in the Beijing Research Institute of Mining and Metallurgy. It has an exemplary role in the comprehensive utilization of cyanide tailings in China's huge deposits of gold concentrates.