釩鈦磁鐵精礦直接還原反應行為及其強化還原研究

陳德勝; 宋波; 王麗娜; 齊濤; 王偉菁

doi:10.13374/j.issn1001-053x.2011.11.016

釩鈦磁鐵精礦直接還原反應行為及其強化還原研究

doi: 10.13374/j.issn1001-053x.2011.11.016

陳德勝^1,2,3,
宋波¹,
王麗娜^2,3,
齊濤^2,3, ,,
王偉菁^2,3

1. 北京科技大學冶金與生態工程學院, 北京 100083;
2. 濕法冶金清潔生產技術國家工程實驗室, 北京 100190;
3. 中國科學院過程工程研究所綠色過程與工程院重點實驗室, 北京 100190

基金項目:

中國科學院知識創新工程重要方向項目(KGCX2-YW-214)

51090380

國家重點基礎研究發展計劃資助項目(2007CB613501)

國家自然科學基金資助項目(51004091

21006115)

詳細信息

通訊作者:
齊濤,E-mail:tqgreen@home.ipe.ac.cn

中圖分類號: TF533.1
計量
- 文章訪問數: 124
- HTML全文瀏覽量: 32
- PDF下載量: 9
- 被引次數: 0
出版歷程
- 收稿日期: 2010-12-02
- 網絡出版日期: 2021-07-30

Direct reduction and enhanced reduction of vanadium-bearing titanomagnetite concentrates

CHEN De-sheng^1,2,3,
SONG Bo¹,
WANG Li-na^2,3,
QI Tao^{2,3
, ,},
WANG Wei-jing^2,3

1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China;
2. National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Beijing 100190, China;
3. Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China

摘要

摘要: 通過在釩鈦磁鐵精礦中添加還原煤粉和少量添加劑,研究了還原溫度、還原時間和添加劑等因素對釩鈦磁鐵精礦金屬化率的影響,并對添加劑強化還原機理進行了探討.結果表明:還原溫度、還原時間、碳鐵摩爾比及添加劑對金屬化率的影響較大.在還原溫度1200℃、還原時間120 min的條件下,未添加添加劑時金屬化率最高可達84.5%;添加質量分數3.0%Na₂CO₃或CaF₂的條件下,釩鈦磁鐵精礦的金屬化率可以分別達到96.5%和93.3%.
- 釩鈦磁鐵精礦 /
- 直接還原 /
- 添加劑 /
- 金屬化率
Abstract: Vanadium-bearing titanomagnetite concentrates were reduced isothermally by adding pulverized coal and additives.Some factors which influence the metallization degree,such as reaction temperature,reaction time,C-to-Fe molar ratio and additives,were investigated.The enhanced reduction mechanism of additives was also discussed.The results show that reaction temperature,reaction time,C-to-Fe molar ratio and additives have great effect on the metallization degree.Under the condition of the reaction temperature of 1 200℃ and the reaction time of 120 min,the maximum metallization degree is 84.5% without any additive.Using Na₂CO₃ or CaF₂ as an additive,the reduction of vanadium-bearing titanomagnetite concentrates can be promoted.With the addition of 3.0% Na₂CO₃ or CaF₂,the metallization degree of vanadium-bearing titanomagnetite concentrates can reach up to 96.5% and 93.3% after the samples are heated at 1 200℃ for 120 min,respectively.
- vanadium-bearing titanomagnetite /
- direct reduction /
- additives /
- metallization degree