为提高高炉冶炼钒钛磁铁矿水平，系统研究了矿焦混装对高炉综合炉料软熔滴落性能和V、Cr在渣铁中迁移规律的影响，并进行了理论分析。试验过程中烧结矿和球团矿所占比例不变。研究表明，矿焦混装对高炉综合炉料的软化区间、熔化区间、滴落率和透气性等软熔滴落性能参数有显著影响。随着混装率提高，软化区间t40－t4稍微变宽；熔化区间tD－tS逐渐变窄，软熔带变薄且位置下移；熔滴性能总特征值明显减小，综合炉料透气性能显著改善；渣铁滴落率先增加后减少；V、Cr在初铁中的收得率先升高后降低。因此，一定程度的矿焦混装有利于改善钒钛磁铁矿高炉冶炼综合炉料的软熔滴落性能，其混装率以25%为宜。
Effects of ore-coke mixed charging on softening-dripping behavior of vanadium-titanium magnetite composite burdens and migration patterns of V and Cr elements in slag-iron were studied systemically and theoretically to improve the level of smelting vanadium-titanium magnetite in blast furnace. The proportion of sinter and pellet was constant. The results show that, ore-coke mixed charging ratio has significant effects on the softening and dripping parameters including softening zone, melting zone dripping ratio and permeability. With the increase of ore-coke mixed charging ratio, the soft-ening range t40-t4 tends to be a little wider;the melting range tD-tS is greatly narrowed;the cohesive zone tends to nar-row and its location is shaft down;softening-dripping characteristics tends to decrease significantly, gas permeability be-comes better and the dripping ratio tends to increasing then decreasing;the recovery ratio of V and Cr in initial iron tends to increasing then decreasing. Thus, a certain ratio of ore-coke mixed charging is helpful to improve the softening-dripping behavior of vanadium-titanium magnetite composite burdens for smelting in blast furnace. The optimal ore-coke mixed charging ratio is 25%.
参考文献
| [1] | 杜鹤桂.高炉冶炼钒钛磁铁矿原理[M].北京:科学出版社, 1996.,1996. |
| [2] | Jena B C, Dredler W, Reilly I G. Extraction of titanium, vanadi-um and iron from titanmagnetite deposits at pipestone lake, man-itoba, Canada [J]. Minerals Engineering, 1998, 8(1/2):159.,1998. |
| [3] | 朱俊士.钒钛磁铁矿选矿及综合利用[J].金属矿山,2000(01):1-5,11. |
| [4] | 胡俊鸽,郭艳玲,周文涛,赵小燕.提高高炉焦炭混装比技术的新进展[J].上海金属,2013(02):41-45. |
| [5] | 杜鹤桂,张之平,王殿君.攀钢高炉矿焦混装软熔性能的研究[J].钢铁钒钛,1993(01):1. |
| [6] | 杨兆祥,杨佳龙.矿焦混装对难还原元素还原的影响[J].炼铁, 1990(6):23.,1990. |
| [7] | 周春林.高炉矿焦混装试验及其节焦机理分析[J].冶金能源,1992(06):14. |
| [8] | Mousa E A, Bahich A, Senk D. Effect of nut coke-sinter mixture on the blast furnace performance [J]. ISIJ International, 2011, 51(3):350.,2011. |
| [9] | Shiro W, Kanji T, Hirobumi N, et al. Development of high ratio coke mixed charging technique to the blast furnace [J]. ISIJ In-ternational, 2006, 46(4):513.,2006. |
| [10] | Shiro W, Kanji T, Hirobumi N, et al .高炉への鉱石·コークス多量混合装入技術の開発[J].Tetsu-to-Hagane,2006,92(12):901.,2006. |
| [11] | 储满生.钢铁冶金原燃料及辅助材料[M].北京:冶金工业出版社,2010.,2010. |
| [12] | 储满生,柳政根,王兆才,赵凯,郭同来.高炉炉料配加热压含碳球团软熔滴落性能的试验研究[J].钢铁,2011(11):16-20. |
| [13] | 甘勤,何木光,何群.低硅高碱度对钒钛烧结矿冶金性能的影响[C].2010年全国炼铁生产技术会议暨炼铁年会论文集,2010:294-298,303. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%