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Beneficiation of a non-coking coal from Raniganj, India

机译:印度Raniganj的非焦煤选矿

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摘要

Huge non-coking coal deposits need beneficiation with their high ash because of drift origin. A part of coking coal could be replaced with beneficiated non-coking coal in steel industry. The ash levels could be reduced to the desired limits by applying beneficiation techniques including heavy media separation and froth flotation. Collectors coupled with frothrs are usually resorted to in the flotation process. A non-coking coal sample from Raniganj, India analysed 47.33 percent fixed carbon, 35.73 percent volatile matter, 14.94 percent ash and 2.00 percent moisture has been examined in this paper vis-a-vis ash reduction. Various collectors like kerosene oil, light diesel oil and fuel oil along with frothers MIBC, cresylic acid and pine oil were attempted. The role of collectors was examined and efficiency index (EI) of collectors was shown. The EI of kerosene oil (472.51) was higher than the other collectors and the ash was reduced to 11.90 percent with 93.6 percent yield.
机译:由于漂移的缘故,巨大的非结焦煤矿床需要以其高灰分进行选矿。在钢铁行业中,部分炼焦煤可用精选的非炼焦煤代替。通过应用选矿技术(包括重介质分离和泡沫浮选),可以将灰分含量降至所需的极限。浮选过程中通常采用收集器和起泡器。来自印度Raniganj的非焦煤样本分析了47.33%的固定碳,35.73%的挥发性物质,14.94%的灰分和2.00%的水分,相对于减少灰分而言。尝试了各种收集器,例如煤油,轻柴油和燃料油,以及起泡剂MIBC,甲酚酸和松油。检查了集热器的作用并显示了集热器的效率指数(EI)。煤油的EI(472.51)高于其他收集器,灰分降低至11.90%,产率为93.6%。

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