Scholarlink

<p>Given the significant environmental challenges posed by the extensive accumulation of titanium-rich blast furnace slag in iron production, it is imperative to explore sustainable titanium extraction techniques. This research proposes a method involving the roasting of ammonium sulfate, followed by aqueous extraction, and the subsequent eco-friendly recycling of ammonium sulfate. The impact of mechanical activation on the leaching process was examined under both non-activated and modified conditions. A selective experiment was conducted to ascertain the optimal reaction parameters, utilizing a 50:1&#xa0;g/g ball-to-material ratio at 300&#xa0;rpm. The leaching process requires adding 5 times deionized water to the solid, and then leaching at 300&#xa0;rpm and 50 °C for 30&#xa0;min. The primary alterations and kinetic control model were analyzed, revealing that the leaching rate is predominantly governed by diffusion reactions. Furthermore, the purity of 91.16% titanium dioxide was obtained by direct hydrolysis and roasting after leaching, and the utilized ammonium sulfate can be recycled, establishing a comprehensive reaction cycle.</p> Graphical Abstract <p></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

Extraction of Titanium from Ti-Bearing Blast Furnace Slag Using Ammonium Sulfate Roasting-Water Leaching Enhanced by Mechanical Activation

  • 期刊论文

  • 发表日期：

    2025年5月5日

查看全文
  • Haowen Zai,
  • Chenglong Zhang,
  • Zengjun Li,
  • Ruixue Wang,
  • En Ma,
  • Xihua Zhang

摘要

Given the significant environmental challenges posed by the extensive accumulation of titanium-rich blast furnace slag in iron production, it is imperative to explore sustainable titanium extraction techniques. This research proposes a method involving the roasting of ammonium sulfate, followed by aqueous extraction, and the subsequent eco-friendly recycling of ammonium sulfate. The impact of mechanical activation on the leaching process was examined under both non-activated and modified conditions. A selective experiment was conducted to ascertain the optimal reaction parameters, utilizing a 50:1 g/g ball-to-material ratio at 300 rpm. The leaching process requires adding 5 times deionized water to the solid, and then leaching at 300 rpm and 50 °C for 30 min. The primary alterations and kinetic control model were analyzed, revealing that the leaching rate is predominantly governed by diffusion reactions. Furthermore, the purity of 91.16% titanium dioxide was obtained by direct hydrolysis and roasting after leaching, and the utilized ammonium sulfate can be recycled, establishing a comprehensive reaction cycle.

Graphical Abstract