氧化铝对CaO基脱硫剂铁水脱硫的影响

炼钢 ›› 2014, Vol. 30 ›› Issue (6): 32-36.

氧化铝对CaO基脱硫剂铁水脱硫的影响

(1.苏州大学沙钢钢铁学院，江苏苏州 215021; 2.江苏省（沙钢）钢铁研究院，江苏张家港 215625)

接受日期:1900-01-01 出版日期:2014-12-05

Effect of alumina on hot metal desulphurization with the CaO based desulphurization flux

Accepted:1900-01-01 Online:2014-12-05

摘要/Abstract

摘要： 通过在脱硫剂中添加Al2O3 进行铁水脱硫试验，探讨Al2O3 对CaO基脱硫剂铁水脱硫的影响规律。结果表明：随着Al2O3 添加量的增大，脱硫剂的脱硫量、脱硫率和脱硫速率常数呈现先升高、后降低的趋势，Al2O3 的添加有利于提高石灰的利用率；Al2O3 的加入降低了石灰的熔点，同时也降低了CaO颗粒表面的脱硫产物的熔点；过量的Al2O3 将降低有效脱硫组分CaO的比例，削弱了脱硫剂中CaF2添加剂的作用。为保证较好的脱硫效果和提高脱硫剂利用率，脱硫剂中Al2O3 的添加质量分数以10 %为宜。

关键词: CaO基脱硫剂, Al2O3 , 铁水脱硫, 脱硫率

Abstract: Effect of alumina on hot metal desulphurization has been investigated by hot metal desulphurization experiment using CaO based desulphurization flux with various Al2O3 contents. The results indicated that the desulphurization ratio and apparent desulphurization rate constant increased with increasing the Al2O3 contents, following by a decrease with further increasing the Al2O3 contents. The utilization of lime increased with the increase of the Al2O3 contents. The melting point of the lime and desulphurization production, which was covered the surface of the lime particle, was lower with the increase in the Al2O3 contents. An excess of alumina should reduce the ratio of the CaO content, which was the main desulphurization component, and weaken the beneficial effect of CaF2 in the desulphurization flux. It is suggested that the Al2O3 mass fraction in desulphurization flux should be 10 % to get better desulphurization effect and higher utilization ratio of the flux.

Key words: CaO based desulphurization flux, alumina, hot metal desulphurization, desulphurization rate

许继芳1,苏丽娟1,邹长东2,翁文凭1,盛敏奇1. 氧化铝对CaO基脱硫剂铁水脱硫的影响[J]. 炼钢, 2014, 30(6): 32-36.

[1]	冯文甫1,2，郭键1,2，韩清连1,2，叶凡新1,2，曹红波1,2，赵世杰1,2，范建英1,2. 60 t AOD炉铁水脱硫的工艺实践[J]. 炼钢, 2020, 36(1): 1-3.
[2]	杨光维1，陈兆平1，柳向椿2，徐超2. VD镇静时间对齿轮钢大颗粒夹杂物的影响[J]. 炼钢, 2019, 35(6): 31-34.
[3]	操龙虎1，赵青2. Al2O3对不锈钢渣中铬富集行为的影响机制[J]. 炼钢, 2019, 35(5): 75-78.
[4]	张立峰. 关于钢洁净度指数的讨论[J]. 炼钢, 2019, 35(3): 1-12.
[5]	张飞. 20CrMnTiH钢材硬质点的成因分析及控制措施[J]. 炼钢, 2019, 35(2): 63-65.
[6]	朱学谨. 150 t LF生产工艺优化及实践[J]. 炼钢, 2018, 34(6): 11-14.
[7]	李翔1，包燕平2，王敏2. 提高中薄板超低碳钢钢液可浇性生产工艺研究[J]. 炼钢, 2018, 34(3): 38-42.
[8]	付孝锦文光华唐萍. w(CaO)/w(Al2O3)对高铝TRIP钢保护渣熔化及流动性能的影响[J]. , 2016, 32(3): 24-28.
[9]	史彩霞，李中金. 钒钛铁水脱硫工艺分析及实践[J]. 炼钢, 2014, 30(5): 5-.
[10]	陈洋，陈景锋，班树勋，欧西达. 钝化石灰在复合喷吹铁水脱硫工艺中的应用[J]. 炼钢, 2014, 30(5): 66-.
[11]	曾建华;潘红;冯远超;张敏;杨森祥;李利刚. 无取向电工钢硫含量控制技术研究[J]. , 2013, 29(1): 32-35,5.
[12]	罗磊;孙彦辉;方忠强;于卓颖. 高品质管线钢钙处理夹杂物变性研究[J]. , 2013, 29(1): 57-60.
[13]	王焱辉;王雨;曾晓兰;梁小平;戈文荪. 含钒钛铁水脱硫工艺分析与优化[J]. , 2012, 28(1): 40-43.
[14]	谢祥;肖纯. SWRS82B钢精炼渣的选择与生产实践[J]. , 2011, 27(5): 23-36.
[15]	王维;;胡尚雨. LF冷态渣用于脱硫的研究[J]. , 2011, 27(2): 48-51.