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Sintering Pot Test of Manganese Ore with Addition of Manganese Furnace Dust

机译:锰矿粉的锰矿粉烧结锅试验

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Manganese furnace dust is formed from volatiles and fines collected during wet scrubbing of the off-gas from manganese alloy smelting furnaces. This dust, in the form of slurry, contains tar, alkalies, zinc, manganese oxide and other elements. Impediments to the recycling of the manganese furnace dust back to the ferroalloy furnaces are the potential accumulation of zinc and alkalies, which can cause irregularities in furnace operation, and handling. This paper examines the behaviour of zinc during sintering pot tests of manganese ore with addition of manganese furnace dust. Laboratory reduction experiments showed that at temperatures above 800℃ zinc oxide was reduced by carbon in tar to zinc vapour. However, zinc removal in sintering pot tests was below 30%, which was attributed to reoxidation of the zinc vapour. Zinc removal was the highest from the bottom section of the sintering pot bed.
机译:锰炉粉尘是由锰合金冶炼炉的废气湿式洗涤过程中收集的挥发物和细粉形成的。这种粉尘以淤浆的形式包含焦油,碱,锌,氧化锰和其他元素。锌和碱金属的潜在积累是阻碍锰炉粉尘再循环回铁合金炉的障碍,这可能会导致炉子操作和处理不规范。本文研究了在添加锰炉粉尘的锰矿砂的烧结锅试验中锌的行为。实验室还原实验表明,在800℃以上的温度下,焦油中的碳将氧化锌还原为锌蒸气。但是,在烧结锅测试中锌的去除率低于30%,这归因于锌蒸气的再氧化。从烧结锅床的底部去除锌最高。

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