| RH精炼工艺脱氮的影响因素 |
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| 引用本文： | 何云龙,孙维,金友林,范鼎东.RH精炼工艺脱氮的影响因素[J].中国冶金,2015,25(2):47-50. |
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| 作者姓名： | 何云龙 孙维 金友林 范鼎东 |
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| 作者单位： | 1.马鞍山钢铁股份有限公司特钢公司， 安徽 马鞍山 243000 2.安徽工业大学冶金与资源学院， 安徽 马鞍山 243000 |
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| 摘 要： | 通过对马钢120t RH精炼炉进行脱氮工艺试验，分析了钢水脱氮率与初始氮含量、真空度、循环次数以及渣层厚度之间的关系。试验结果表明，RH真空下的脱氮率受诸多工艺因素的相互共同制约，初始氮含量对脱氮率的影响呈现阶梯性的特点，低真空度是获得较高脱氮率的必要条件，循环次数保持在10~12次范围内，脱氮效果最佳。渣层厚度对脱氮有双重影响，应合理控制渣量，使RH渣层厚度避开130~150mm区间。
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| 关 键 词： | 关键字 ：脱氮 循环次数 渣层厚度 真空度 |
Influence factors of nitrogen removal in RH refining process |
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| HE Yun-long;SUN Wei;JIN You-lin;FAN Ding-dong.Influence factors of nitrogen removal in RH refining process[J].China Metallurgy,2015,25(2):47-50. |
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| Authors: | HE Yun-long;SUN Wei;JIN You-lin;FAN Ding-dong |
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| Affiliation: | （1.Special Steel Company of Ma’anshan Iron and Steel Co., Ltd., Ma’anshan 243000, Anhui, China 2.School of Metallurgy and Resources, Anhui University of Technology, Ma’anshan 243000, Anhui, China |
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| Abstract: | Based on the denitrification technology testing of 120t RH at Masteel the relationships between denitrification rate and initial nitrogen content, cycle times, slag depth were analyzed. Results showed that denitrification rate and many process factors were mutual constraint in RH vacuum. Effect of the initial nitrogen content on the denitrification rate had the ladder-type characteristics. Low vacuum degree was the necessary condition to obtain higher denitrification rate, and denitrification effect achieved best when steel cycles remained within 10-12 times. RH slag depth had a dual effect on denitrification rate, so slag volume should be reasonable control avoiding from 130-150mm intervals. |
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| Keywords: | Key Words: denitrification cycle times Slag layer thickness vacuum |
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