Lead Zinc Processing Plant

Lead and Zinc Ore

Zinc and lead minerals commonly coexist in nature. Their minerals are often comined and concentrated while the respective metals are often refined separately. Both metals have seen significant growth in their markets in recent years. Zinc metal is mainly used in the galvanizing industry, which accounts for almost half of its modern-day demand. Worldwide, lead is predominantly used in the lead-acid battery industry. When zinc and lead sulfides are present in profitable amounts they are regarded as ore minerals. The remaining rock and minerals are called gangue.

Lead Zinc Processing Plant

Due to low zinc content, run-of-mine zinc-bearing ores must be concentrated before smelting and refining. Beneficiation, which usually occurs at the mine, consists of crushing, grinding, and flotation to produce concentrates of 50 to 60 percent zinc. Lead ore also requires processing to remove rock and mineral impurities to achieve a suitable concentration.

Jigging separates coarse lumps. In this process, the crushed ore is agitated or shaken in water with a vertical motion. This permits the heavy lumps to settle to the bottom and the lighter rock to remain on top. For more finely crushed ore, another concentration method is used. The ore is crushed to sand-size particles. The crushed ore and water mixture flows across a vibrating table that cleanly separates the heavy mineral from the fine ore.

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