The primary potential control flotation technology and the corresponding comprehensive recovery and beneficiation process are suitable for processing various complex multi-metal refractory sulfide ores. They have been promoted and applied in the Xitieshan lead-zinc mine of Qinghai Western Mining and the Nanjing Qixiashan lead-zinc mine.
Based on the composition characteristics of the existing low-grade polymetallic minerals, the Dingjiashan mining area has undergone a large number of laboratory tests and combined with the results of industrial tests to determine that the recovery rate of lead, zinc and silver can be comprehensively improved through the primary potential control flotation technology, and the process improvement The iron sulfide minerals and magnetite in the ore were recovered separately, and on this basis, the original Meixian Concentrator was technically transformed. After the transformation is completed, the comprehensive recovery of valuable metals in the high-sulfur refractory lead-zinc-silver polymetallic ore can be effectively realized by adjusting the primary potential, the pH value of the slurry, and the dosage of the reagent. The lead recovery rate has been increased from 85% to 87%. The recovery rate of zinc has been increased from 66% to 76%, the recovery rate of zinc has been increased from 92% to 94%, and the recovery rate of iron sulfide minerals has reached 87%, and the recovery rate of magnetite has reached 71%. The sorting index is ideal.
Under the background of rapid economic development in our country for decades, mineral resources have been developed on a large scale, and gradually show a trend of poverty, fineness and miscellaneousness. In order to effectively guarantee the amount of mineral resources required for national development, new technologies, techniques and equipment are developed to deal with them. Complex ore is urgent. This technology and its theory can guide the actual production of complex polymetallic difficult-to-separate sulfide mines, especially in various types of mines containing precious metals copper, lead, zinc, and sulfide. This technology greatly improves the recovery rate of precious metals such as copper, lead, and zinc. At the same time, the application of relevant technologies to optimize the beneficiation process can effectively recover pyrite minerals, magnetic iron minerals and other inorganic minerals.
