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Iron ore is an important raw material of steel producers.After crushing, grinding, magnetic separation, flotation, re-election and other procedures,natural minerals(iron ore)elected gradually of iron. Iron exist in nature all in compounds state, especially in the state of iron oxide but has more impurities. Such as hematite, magnetite, siderite, limonite, etc.

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Copper ore, hardness of 3-4, copper ore after smelting commission becomes refined copper and copper products. Concentrate copper ore species: native copper, chalcopyrite, bornite, chalcocite, azurite and covellite. Copper ore is mainly used in metallurgical industry, metallurgical industry raw material.

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Gold occurs principally as a native metal, usually alloyed to a greater or lesser extent with silver, or sometimes with mercury. Native gold occur as sizeable nuggets, as fine grains or flakes in alluvial deposits, or as grains or microscopic particles embedded in other rocks.

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Lead and zinc ore is the metal-rich mineral elements such as lead and zinc, blue gray, hardness 1.5, it is the most soft metals, lead is one of the earlier extracted in history, lead and zinc are widely used in various of areas.

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