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how to produce nikel by ore

The smelting of ferronickel using lean nickel ores usually starts with roasting calcining of the ore mixture with limestone one third of the ore, anthracite 110 of the ore amount, and recycled dust. Roasting is carried out in rotary kilns 3 m in diameter, 75 m in length, with a hot zone length of 9 to 12 m in the case of lean ore ...

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