为了合理利用新疆区域的贫矿资源,优化高炉炉料结构,开展优化烧结矿碱度的试验研究.利用50 kg烧结杯,针对新疆复杂矿做了7组碱度为1.65~2.00的烧结杯试验.通过对烧结矿机械强度、冶金性能及矿物组成分析,得出碱度为1.80~1.85时,烧结矿中铁酸钙质量分数明显增加,烧结矿的ISO转鼓强度较高,成品率最高达到78%,还原度和低温还原粉化指数均得到改善,软熔区间最窄,为最优的烧结碱度区间;而碱度为1.65~1.75时,转鼓强度降低、熔滴性能变差,处于烧结矿的粉化区间,配加新疆区域复杂矿烧结生产时应避开此碱度区间.
In order to utilize the lean ore resources in Xinjiang rationally and optimize the blast furnace charge structure, the optimizing experiments on sinter basicity were carried out. In view of the complex ore in Xinjiang,Seven groups of sintering pot tests were conducted. The basicity of all these tests changed among 1.65 and 2.00. Through analyzing the me-chanical strength,metallurgical properties and mineral composition of sinter,it is concluded that when the alkalinity was between 1.80 to 1.85,an obvious increase of the SFCA content in sinter can be observed,the ISO drum strength of sinter was comparatively high and the yield can be as high as 78%,the reducibility and low temperature reduction desintegra-tion index of sinter were also improved,and the soft melting range was the narrowest. So it is the optimal basicity range of sinter. However,when the basicity was among 1.65 and 1.75,the drum index declined and the property of molten drop became worse. It is the pulverization basicity interval of sinter,therefore considering the complexity of ore in Xinjiang ar-ea,this range should be avoided in sintering production.
参考文献
| [1] | 蒋大军;何木光;甘勤;何群.超高碱度对烧结矿性能与工艺参数的影响[J].钢铁,2009(2):98-104. |
| [2] | 吕庆;张旭升;刘小杰;喇校帅.钛对烧结矿基础性能的影响[J].钢铁,2015(5):13-18. |
| [3] | 刘东辉;吕庆;邹雷雷;孙艳芹;冯帅;陈树军.混合矿基础特性对钒钛磁铁烧结矿转鼓指数的影响[J].钢铁研究学报,2015(1):12-15. |
| [4] | 于素荣;周节旺;于淑娟;李跃民.碱度对鞍钢烧结矿产、质量的影响[J].烧结球团,2007(5):18-21. |
| [5] | 李建朝;伊凤永;李福民;孙凯;吕庆.混合铁矿粉的烧结基础特性[J].钢铁,2013(5):7-10,40. |
| [6] | 朱贺民.烧结矿碱度、SiO2和MgO含量对烧结冶金性能的影响[J].钢铁研究,2006(04):17-20. |
| [7] | 武轶;金俊;熊德怀.低碱度高镁烧结矿性能的研究[J].钢铁研究,2013(3):8-10. |
| [8] | 王喆;张建良;左海滨;高冰;李峰光;王润博.Al2O3质量分数对高碱度烧结矿软熔滴落性能影响[J].钢铁,2015(7):20-25,76. |
| [9] | 姚君豪;杨军;韩冬;郭兴敏.添加剂对高MgO烧结矿中铁酸钙生成的影响[J].钢铁,2015(2):12-16,21. |
| [10] | 柳政根;储满生;陈立杰;付小佼.烧结矿中MgO对钒钛矿综合炉料软熔滴落的影响[J].东北大学学报（自然科学版）,2015(5):655-659. |
| [11] | 王海涛;李光辉;范晓慧;黄柱成;姜涛.几种高炉炉料冶金性能的对比研究[J].钢铁,2006(1):23-27. |
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