提出RH碳酸盐分解CO2脱碳工艺。通过从RH上升管喷吹碳酸钙粉剂实现钢水脱碳和净化钢液的目的。分析RH碳酸盐分解CO2的脱碳机理，并进行工业试验，考察RH碳酸盐分解CO2脱碳工艺对钢水洁净度的影响。结果表明，采用RH碳酸盐分解CO2脱碳工艺缩短RH精炼处理时间3 min，吨钢成本降低3～5元。铸坯的平均w(T[O])可达0.0010%以下，显著提高钢水的洁净度。
An investigation on decarburization by carbonate decomposition of CO2 in RH process has been put forward. By means of spraying calcium carbonate powder into molten steel from the upper snorkel,the decarburization reaction and purifying molten steel were promoted. The decarburization mechanism of this novel technique has been analyzed. The industrial experiments have been carried out to investigate the variation of the cleanness of molten steel before and after the treatment. The results indicate that decarburization reaction took place after carbonate decomposition of CO2 de-carburization treatment and decarburization process was accelerated,which led to shorten at least 3 min for the RH processing time and reduce 3-5 RMB for the production cost per ton steel. w(T[O]) in the as-cast slab approached to 0.001 0%after non-oxygen promoting decarburization treatment,which improved the cleanness of the molten steel sig-nificantly.
参考文献
| [1] | 王敏;包燕平;杨荃;赵立华;林路.IF 钢铸坯厚度方向洁净度演变[J].工程科学学报,2015(3):307-311. |
| [2] | Koji Yamaguchi;Toshikazu Sakuraya;Kazuhisa Hamagami.Development of Hydrogen Gas Injection Method for Promoting Decarburization of Ultra-low Carbon Steel in RH Degasser[J].Kawasaki Steel Technical Report,199532(32):33-37. |
| [3] | Dian-Qiao GENG;Hong LEI;Ji-Cheng HE.Effect of Traveling Magnetic Field on Flow, Mixing,Decarburization and Inclusion Removal during RH Refining Process[J].ISIJ International,20126(6):1036-1044. |
| [4] | 刘中柱;蔡开科.LD-RH-CC工艺生产低碳铝镇静钢清洁度的研究[J].钢铁,2001(4):23-26. |
| [5] | 魏季和;郁能文;樊养颐;杨森龙;马金昌;朱德平.RH和RH-KTB精炼过程中钢液流动和混合特性的研究[J].上海大学学报(英文版),2002(2):167-175. |
| [6] | Park Y.G.;Doo W.C..Numerical Calculation of Circulation Flow Rate in the Degassing Rheinatahl-Heraeus Process[J].ISIJ International,20008(8):749-755. |
| [7] | 朱苗勇;黄宗泽.RH真空脱碳精炼过程的模拟研究[J].金属学报,2001(1):91-94. |
| [8] | 万雪峰;曹东;刘祥;朱晓雷;廖相巍.转炉应用CO2技术[J].钢铁,2015(5):30-33. |
| [9] | 程相利;张俊;严定鎏;齐渊洪;高建军.CO2炼钢对氧气高炉循环煤气的改质及加热[J].钢铁,2014(6):8-11. |
| [10] | Koria S.C.;Dutta R..Study of the effect of some process parameters on powder injection refining by a mathematical model[J].Scandinavian Journal of Metallurgy,20006(6):259-270. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%