Scholarlink

<p>This study suggests using the hematite process, which operates at a temperature range of 150 − 160°C, to effectively remove iron (Fe) ions from zinc (Zn) leaching solutions. Repeated experiments were carried out in the laboratory to evaluate the practicality and efficiency of the low-temperature hematite process. The findings demonstrated a substantial decrease in the ultimate total Fe concentration in the solution to 1&#xa0;g/L within a time frame of 180&#xa0;min. The Fe ions were observed to precipitate as hematite products, which contained more than 55% Fe. The analytical techniques used, XRD, FT-IR, and XPS, revealed that the hematite products were mainly composed of α-Fe<sub>2</sub>O<sub>3</sub>, α-FeOOH, and small quantities of KFe<sub>3</sub>(SO<sub>4</sub>)<sub>2</sub>(OH)<sub>6</sub> and NaFe<sub>3</sub>(SO<sub>4</sub>)<sub>2</sub>(OH)<sub>6</sub>. The sulfate was found to be either wrapped around or embedded within the products. Moreover, the XPS spectra revealed the occurrence of a dehydration phenomenon involving hydrated ferric oxide during the hematite process. The SEM pictures revealed that the hematite products had a morphology characterized by clusters of spherical particles made of ferric oxide and rhombus-shaped crystals composed of jarosite phases. The experimental results confirm the feasibility of the low-temperature (150 − 160°C) hematite process.</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

Iron Removal from Zinc Leaching Solution with High Sulfate Concentration via Hydrothermal Mineralization Precipitation at 150−160°C

  • 期刊论文

  • 发表日期：

    2025年6月24日

查看全文
  • Xiaohua Peng,
  • Bo Yang,
  • Xingbin Li,
  • Xingzheng Dai,
  • Chang Wei,
  • Zhanqing Lu,
  • Zhigan Deng,
  • Minting Li

摘要

This study suggests using the hematite process, which operates at a temperature range of 150 − 160°C, to effectively remove iron (Fe) ions from zinc (Zn) leaching solutions. Repeated experiments were carried out in the laboratory to evaluate the practicality and efficiency of the low-temperature hematite process. The findings demonstrated a substantial decrease in the ultimate total Fe concentration in the solution to 1 g/L within a time frame of 180 min. The Fe ions were observed to precipitate as hematite products, which contained more than 55% Fe. The analytical techniques used, XRD, FT-IR, and XPS, revealed that the hematite products were mainly composed of α-Fe2O3, α-FeOOH, and small quantities of KFe3(SO4)2(OH)6 and NaFe3(SO4)2(OH)6. The sulfate was found to be either wrapped around or embedded within the products. Moreover, the XPS spectra revealed the occurrence of a dehydration phenomenon involving hydrated ferric oxide during the hematite process. The SEM pictures revealed that the hematite products had a morphology characterized by clusters of spherical particles made of ferric oxide and rhombus-shaped crystals composed of jarosite phases. The experimental results confirm the feasibility of the low-temperature (150 − 160°C) hematite process.