Multi-metal ore flotation process principles (e.g., including copper, lead, zinc sulphide ore more), and it can be divided into:
First, direct priority flotation process
The flotation process of various useful minerals is selected in turn, called the priority flotation process. The characteristics of the process can adapt to the change of ore grade, have higher flexibility, and compare the original sulfide ore with higher ore grade, such as the flotation process of Xilin, Fankou and Lechang lead-zinc ore dressing plants in China. This is the case for the flotation process at the Laisvall lead-zinc plant in Sweden.
Second, the hybrid flotation process
Firstly, all the useful minerals in the ore are floated together to obtain a mixed concentrate, and then the mixed concentrate is sequentially sorted out into various useful minerals, which is called a mixed flotation process; this process is adapted to the total content of sulfide minerals in the ore. The symbiotic bond between the sulfide minerals, the complex structure and the fine grain size of the ore, which can simplify the process and reduce the excessive pulverization of the mineral, thereby facilitating the sorting. The former Soviet Union Almac lead-zinc ore dressing plant adopted this process to obtain higher than the priority flotation process, the lead concentrate grade increased by 10%, the zinc concentrate grade increased by 4.5%, and the ore comprehensive utilization rate from 75.4% increased to 83.7%, labor productivity catch twice as high, our Qingchengzi lead and zinc processing plant, small iron copper mine processing plant production processes also belongs to this category.
Third, part of the hybrid flotation process
A process in which two useful minerals in the ore are first floated together to obtain a mixed concentrate, and then the mixed concentrate is separated into a single concentrate, which is called a partial mixing flotation process. This is the most widely used process in production. When the grades of copper, molybdenum , copper, lead, copper, zinc and lead in the ore are low, such processes are often economical. China's Taolin, Huanren, Tianbaoshan, Hesan, Zhanggongling, Bajiazi and other copper Processes such as lead and zinc selection plants are used.
Fourth, the floating flotation process
According to the good or bad minerality of the ore in the ore, the floatable, medium and poor mineral groups are floated in turn, and then the mixed concentrates are sequentially sorted out into different useful minerals. The flotation flotation process, such as the Huangshaping lead-zinc ore dressing plant in China, is the process of the original Soviet Zezkaz dry copper-lead ore dressing plant.
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