论文部分内容阅读
用碳酸钠吹氧法予处理含钒铁水同时脱除钒磷硫,低磷硫半钢氧气底吹转炉无渣炼钢半工业性联动试验,国内外首次进行。攀钢低硫含钒铁水经予处理后,得含3.55[C]％,0.011(P)％,0.013[S]％和0.067[V]％的优质半钢,甚至硫高达0.150％的含钒生铁也能获得[S]<0.028％的优质半钢;这种半钢在氧气底吹转炉内,不加任何造渣剂,仅脱碳调温,炼成优质碳素钢,成份、机械性能和钢中气体含量均符合部颁标准要求;所获含钒钠化渣,钒转化率大于99％,浸出率大于96％,可以不经细破和回转窑氧化钠化焙烧而直接提取精制五氧化二钒。本方法有可能成为大规模开发攀枝花钒钛磁铁矿,实现综合回收铁、钒和钛的更有效的新途径。
Vanadium-bearing molten iron was treated with sodium carbonate blowing oxygen to remove vanadium phosphorus and sulfur at the same time, and the semi-industrial linkage test of slag-free steelmaking at the bottom of low phosphorus and phosphorus semi-steel oxygen blowing furnace was carried out at home and abroad for the first time. After being treated, Panzhihua low-sulfur vanadium-bearing hot metal is treated with high-quality semi-steel containing 3.55 [C]%, 0.011 (P)%, 0.013 [S]% and 0.067 [V]%, Pig iron can also be obtained [S] <0.028% of the quality of semi-steel; this semi-steel in the oxygen bottom blowing converter, without any slag-forming agent, only decarburization temperature, into high-quality carbon steel, composition, mechanical properties And steel gas content are in line with the ministerial standards; the vanadium containing sodium slag, vanadium conversion rate greater than 99%, the leaching rate greater than 96%, can not be fine broken and rotary kiln sodium oxide roasting and direct extraction of refined five Vanadium oxide. This method is likely to become a new large-scale development of Panzhihua vanadium-titanium magnetite, to achieve a comprehensive recovery of iron, vanadium and titanium more effective new ways.