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国外冶炼钒铁磁铁矿时,为了获得含硫合格的含钒生铁,基本上都采用酸性渣0.8～1.0的碱度、低炉温生铁含Si0.3～0.4％,较高的渣量1～1.2吨/吨铁,控制炉渣TiO_2含量不大于14～15％。当渣中TiO_2含量高于15％以上时,除采用特殊措施,炉料中加碱金属的氧化物外,都没有获得成功。东北工学院在实验室进行了试验,并协同马鞍山钢铁公司等单位进行了工业性试验,提出了高碱度、适宜的炉温、低渣量、低焦比的冶炼制度,试验效果很好,既保证了含硫合格的含钒生铁,又使生铁中钒的回收率提高了。根据实验室的研究结果认为:渣中TiO_2含量变化对炉渣脱硫效率影响不大,而主要决定于炉渣碱度和渣中
Foreign smelting vanadium iron magnetite, in order to obtain sulfur-containing vanadium-bearing pig iron, basically use acidic alkalinity of 0.8 to 1.0, low temperature pig iron containing Si0.3 ~ 0.4%, a higher amount of slag 1 ~ 1.2 tons / ton of iron, control slag TiO 2 content of not more than 14 ~ 15%. When the content of TiO 2 in the slag is higher than 15%, no success has been achieved except for using special measures and adding alkali metal oxides in the charge. Northeastern Institute of Technology conducted experiments in the laboratory and cooperated with Maanshan Iron and Steel Co., Ltd. and other units to carry out industrial tests, put forward the smelting system with high alkalinity, suitable furnace temperature, low residue and low coke ratio. The test results are very good, Not only guarantee the sulfur-containing vanadium-bearing pig iron, but also to improve the recovery of vanadium in pig iron. According to the laboratory research results, it is considered that the change of TiO2 content in slag has little effect on the desulfurization efficiency of slag, but mainly depends on the basicity of slag and slag