【作者】 黄博； 李智； 葛君生； 赵长亮； 孙彦辉；

【Author】 Huang Bo;Li Zhi;GeJunsheng;Zhao Changliang;Sun Yanhui;Collaborative innovation center of steel technology, Uuniversity of Science and Technology Beijing;WISDRI Engineering&Research Incorporation Limited;Steelmaking Department of Shougang Jingtang United Iron and Steel Co.,Ltd.;

【机构】 首钢京唐钢铁联合有限责任公司炼钢作业部； 中冶南方工程技术有限公司； 北京科技大学钢铁共性技术协同创新中心；

【摘要】 为了确定300t脱磷炉底吹元件的最优数量与最优分布,本文全面考察了炉役前期和中后期的底吹元件情况,以混匀时间为指标研究转炉吹炼过程中底吹布置方式对熔池搅拌与混匀效果的影响,实验研究结果表明:最优布置方案为内八孔布置,此时混匀时间最小,熔池搅拌效果最好。通过对底吹元件堵塞情况的分析,假设每种情况是等概率的,得到了最佳堵塞顺序。通过实验数据分析,发现集中布置比分散布置好,非对称布置比对称布置好;在底吹元件数量较多时增大流量可以起到加强搅拌的效果,而当底吹元件数量较少时,增大流量反而会起到反作用。更多还原

【Abstract】 In order to determine the optimal number and distribution of the bottom blowing element of 300 t dephosphorization furnace, the bottom blowing element in the early stage and the middle and late stage of the furnace service were investigated in detail. The mixing time was used as the index to study the impact of bottom blowing layout on melt pool mixing and mixing effect. The experimental results show that the optimal arrangement is the inner eight-hole arrangement,and at this moment, the mixing time is the shortest and the mixing effect of the melt pool is the best. By analyzing the blockage of the bottom blowing element, the optimal clogging order is obtained if each case has equal probability. Through the analysis of experimental data, it is found that the concentrated arrangement is better than the scattered one, and the asymmetric arrangement is better than the symmetrically one. When the number of the bottom blowing elements is large, the rise of flow rate can strengthen the stirring effect, while when the number of the bottom blowing elements is small, the rise of flow rate will be counterproductive.更多还原