LF精煉渣的氣化脫硫及資源化利用

林路; 侯中曉; 包燕平; 吳玉喜; 張立強; 曾加慶

doi:10.13374/j.issn2095-9389.2018.s1.022

LF精煉渣的氣化脫硫及資源化利用

doi: 10.13374/j.issn2095-9389.2018.s1.022

1. 鋼鐵研究總院冶金工藝研究所;
2. 冶金減排與資源綜合利用教育部重點實驗室;
3. 北京科技大學鋼鐵冶金新技術國家重點實驗室

基金項目:

省部共建耐火材料與冶金國家重點實驗室開放課題基金資助項目 (G201804)

國家自然科學基金資助項目 (51704080)

冶金減排與資源綜合利用教育部重點實驗室基金項目 (KF17-01)

詳細信息

通訊作者:
張立強, E-mail:linlu_luke@sina.com

中圖分類號: X757
計量
- 文章訪問數: 26
- HTML全文瀏覽量: 6
- PDF下載量: 0
- 被引次數: 0
出版歷程
- 收稿日期: 2018-01-12
- 網絡出版日期: 2023-07-18

Gasification desulfurization and resource utilization of ladle furnace refining slag

1. Metallurgical Technology Institute,Central Iron and Steel Research Institute;
2. Key Laboratory of Metallurgical Emission Reduction & Resources Recycling,Ministry of Education;
3. State Key Laboratory of Advanced Metallurgy,University of Science and Technology Beijing

摘要

摘要: 針對我國30多家鋼鐵企業LF精煉渣處理現狀及利用模式進行詳細調研發現:LF精煉渣處理方式較為簡單, 利用層次低, 資源浪費嚴重.同時, LF精煉渣具有光學堿度、硫容量和硫分配比高, 熔化溫度和黏度較低的特點, 可以在冶金內循環利用, 但渣中硫的富集成為其在冶金內循環利用中的限制環節.基于此, 開展LF精煉渣氧化除硫試驗及冶金回用分析研究.結果表明:LF精煉渣中的硫可被O₂氧化成SO₂;在1370℃和1400℃時, 吹氣10 min除硫率可達47%以上, 而吹氣60 min后除硫率基本可達90%以上, 吹空氣除硫效果明顯, 完全滿足LF精煉渣冶金回用時對硫含量的要求.最終提出了一種簡單高效且與現行生產工藝結合較好的LF精煉渣在冶金中再利用的新思路.
- 精煉渣 /
- 除硫 /
- 冶金回用 /
- 氧化 /
- 硫富集
Abstract: The present situation and utilization mode of LF refining slag were investigated in detail for more than 30 typical iron and steel enterprises in China.It is found that the treatment method of LF refining slag is relatively simple, the utilization level is low and the waste of resources is serious.Meanwhile, LF refining slag is characterized by high optical basicity, high sulfur capacity, high sulfur distribution ratio, low melting temperature, and low viscosity.So LF refining slag could be recycled in smelting process, but sulfur enrichment is a restriction factor during the cyclic utilization.To solve this problem, the sulfur removal test and metallurgical recycling utilization of LF refining slag were carried out.The results show that sulfur in LF refining slag can be oxidized to SO₂by O₂, and it has good desulfurization result when blowing air into the slag at 1643 K and 1673 K.Sulfur removal at 10 min by blowing air is over47%, and over 90%at 60 min, and it can meet the sulfur content requirement of LF refining slag used for smelting process.Finally, a simple and efficient method of LF refining slag used for smelting process is proposed, which goes well with current steelmaking process.
- refining slag /
- sulfur removal /
- metallurgical recycling utilization /
- oxidation /
- sulfur enrichment

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參考文獻(16)

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