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rotary kiln reduced iron in papua new guinea

the use of nickel pyrometallurgical smelting iron general process is firstly the ore is crushed to 50 - 150mm, sent into the drying kiln to ore neither too powder without bond, then sent into the roasting kiln at a temperature of 700 for drying, preheating and roasting, obtained calcine, and then baked sand sent to electric furnace, and add 10 - 30mm of volatile coal, through 1000

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