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本文简介了通过空心电极向１８００ｋＶＡ矿热炉内喷吹煤粉、硅石粉生产硅铁，增产节能的试验。试验取得较好的经济效益。
This article describes the hollow electrode through the 1800kVA submerged arc furnace pulverized coal, silica fume production of ferrosilicon, increase energy-saving test. Test to obtain better economic benefits.