Scholarlink

<p>Specialized vanadium (V)–iron (Fe)-based alloy additives utilized in the production of V-containing steels were investigated. Vanadium slag from the Panzhihua region of China was utilized as a raw material to optimize process parameters for the preparation of V–Fe-based alloy via silicon thermal reduction. Experiments were conducted to investigate the effects of reduction temperature, holding time, and slag composition on alloy–slag separation, alloy microstructure, and the oxide content of residual slag, with an emphasis on the recovery of valuable metal elements. The results indicated that the optimal process conditions for silicon thermal reduction were achieved at reduction temperature of 1823&#xa0;K, holding time of 240&#xa0;min, and slag composition of 45 wt.% SiO<sub>2</sub>, 40 wt.% CaO, and 15 wt.% Al<sub>2</sub>O<sub>3</sub>. The resulting V–Fe-based alloy predominantly consisted of Fe-based phases such as Fe, titanium (Ti), silicon (Si) and manganese (Mn), with Si, V, as well as chromium (Cr) concentrated in the intercrystalline phase of the Fe-based alloy. The recoveries of Fe, Mn, Cr, V, and Ti under the optimal conditions were 96.30%, 91.96%, 86.53%, 80.29%, and 74.82%, respectively. The key components of the V–Fe-based alloy obtained were 41.96 wt.% Si, 27.55 wt.% Fe, 12.13 wt.% Mn, 5.53 wt.% V, 4.86 wt.% Cr, and 3.74 wt.% Ti, thereby enabling the comprehensive recovery of the valuable metal from vanadium slag.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Optimization of process parameters for preparation of vanadium–iron-based alloy via silicon thermal reduction

  • 期刊论文

  • 发表日期：

    2025年9月2日

查看全文
  • Ning Sun,
  • Yi-min Zhang,
  • Nan-nan Xue,
  • Kui-song Zhu,
  • Jun-han Li,
  • Shao-li Yang,
  • Lan Ma,
  • Xiang-li Cheng,
  • Lu Lu

摘要

Specialized vanadium (V)–iron (Fe)-based alloy additives utilized in the production of V-containing steels were investigated. Vanadium slag from the Panzhihua region of China was utilized as a raw material to optimize process parameters for the preparation of V–Fe-based alloy via silicon thermal reduction. Experiments were conducted to investigate the effects of reduction temperature, holding time, and slag composition on alloy–slag separation, alloy microstructure, and the oxide content of residual slag, with an emphasis on the recovery of valuable metal elements. The results indicated that the optimal process conditions for silicon thermal reduction were achieved at reduction temperature of 1823 K, holding time of 240 min, and slag composition of 45 wt.% SiO2, 40 wt.% CaO, and 15 wt.% Al2O3. The resulting V–Fe-based alloy predominantly consisted of Fe-based phases such as Fe, titanium (Ti), silicon (Si) and manganese (Mn), with Si, V, as well as chromium (Cr) concentrated in the intercrystalline phase of the Fe-based alloy. The recoveries of Fe, Mn, Cr, V, and Ti under the optimal conditions were 96.30%, 91.96%, 86.53%, 80.29%, and 74.82%, respectively. The key components of the V–Fe-based alloy obtained were 41.96 wt.% Si, 27.55 wt.% Fe, 12.13 wt.% Mn, 5.53 wt.% V, 4.86 wt.% Cr, and 3.74 wt.% Ti, thereby enabling the comprehensive recovery of the valuable metal from vanadium slag.