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Minerals of lead and zinc commonly are rather closely associated in nature.In deposits mined today, lead is usually found in ores which also contain zinc, silver and commonly copper, and is extracted as a by-product of these metals. Lead and zinc has wide application in electrical industry, machinery, military industry, metallurgy industry, chemical industry, light industry and pharmaceutical industry. As a mineral resource, lead-zinc ore is usually low grade. An extraction & upgrading process is required prior to its industrial production. Lead ore mining needs suitable equipment, technology and process. As professional mining equipment manufacturer, Forui Machinery Factory will discuss lead ore mining in this article.
Gravity concentration separates valuable minerals from gangues by the difference in density. Premise of gravity separation is the existence of clear boundary and density difference between valuable minerals and gangues. Size reduction in crushing process and sieve size in screening process is decided by the embedded size of mineral particles. After crushing and screening process, lead-zinc ore is fed into mineral jig for beneficiation. Mineral jig separates them into heavier lead concentrate and lighter tailings.
Gravity separation process is based on the density difference of valuable minerals and gangues. Advantages are small investment, low production cost, high efficiency, no pollution. The beneficiation equipment includes crusher, vibration screen, mineral jig, dewatering screen, etc. Compared with flotation separation, gravity separation requires much smaller investment, production cost and land area.