ISSN:1003-8620

CN:42-1243/TF

主管:中信泰富特钢集团股份有限公司

主办:大冶特殊钢有限公司

特殊钢 ›› 2015, Vol. 36 ›› Issue (3): 5-8.

• 试验研究 • 上一篇    下一篇

响应曲面法分析和优化铁水KR法脱硫工艺

王震1,苏春阳1,潘明旭1,2,朱国富1,朱祥1,李坚3   

  1. 1大冶特殊钢股份有限公司炼钢事业部,黄石435001;
    2大冶特殊钢股份有限公司高品质特殊钢湖北省重点实验室,黄石435001 ;
    3昆明理工大学冶金与能源工程学院,昆明650093;
  • 收稿日期:2014-12-03 出版日期:2015-06-01 发布日期:2022-08-17
  • 作者简介:王震(1986-),男,硕士(昆明理工大学),助理工程师,转炉炼钢工艺研究。

Analysis and Optimization on Hot Metal KR Desulphurization Process by Response Surface Methodology

Wang Zhen1 , Su Chunyang1 , Pan Mingxu1,2, Zhu Guofu1 , Zhu Xiang1 , Li Jian3   

  1. 1 Steelmaking Division,Da Ye Special Steel Co Ltd, Huangshi 435001
    2 Hubei Province Key Lab for High Quality Special Steel, Da Ye Special Steel Co Ltd, Huangshi 435001 ;
    3 School of Metallurgy and Energy Engineering t Kunming University of Science and Technology, Kunming 650093
  • Received:2014-12-03 Published:2015-06-01 Online:2022-08-17

摘要: 运用响应曲面法(RSM-response surface method)统计分析和研究了脱硫剂(/%:80.55Ca,0.04S,0.01P,4.34SiO2,6.06CaF2,0.05H2O)加入量(650~950 kg),搅拌时间(7~11 min),搅拌桨转速(90~110 r/min),搅拌桨插入熔池深度(850~1 150 mm)等参数对115~117 t铁水(0.03%~0.06%S,1 250~1 350℃)KR法脱硫效率的影响,并得出回归模型方程。结果表明,采用脱硫剂加入量820 kg、搅拌9 min、搅拌桨的转速101 r/min、搅拌桨插入熔池的深度985 mm的优化工艺参数,进行铁水KR预脱硫,脱硫效率预测值为91.99%,实际值为90.18%,相对误差为2.0%;优化后脱硫工艺所使用的脱硫剂消耗有所降低,且产品的一次合格率从88.35%提高到95.88%。

关键词: 铁水预处理, KR脱硫, 脱硫效率, 响应曲面

Abstract: The effect of parameters including adding amount (650 〜950 kg) of desulfiirizer (/% : 80. 55CaO, 0. 04S, 0. 01P, 4. 34SiO2, 6. 06CaF2, 0. 05H2O) , stirring time (7 ~ 11 min) , stirring impeller rotating speed (90 〜110 r/min) and submerged depth of impeller (850 ~ 1 150 mm) on efficiency of KR desulphurization of 115 ~ 117 t hot metal (0. 03% ~ 0. 06% S, 1 250 〜1 350 ℃ ) has been statistic-analyzed and studied by using response surface method ( RSM), and a equation of regression model is obtained. Results show that with using the optimized parameters- adding amount of desulfurizer 820 kg, stirring for 9 min, rotating speed of stirring impeller 101 r/min and submerged depth of impeller in bath 985 mm, with hot metal KR desulphurization the predicted value of efficiency of desulphurization is 91. 99% , while the real measured value is 90. 18% , the relative error is 2. 0% ; with optimized desulphurization process the consumption of used desulfurizer decreases and the first qualified rate of metal increases from original 88. 35% to 95. 88%.