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| Technical Exploration of Jarosite Residue with Direct Reduction-Magnetic Separation-Reverse Flotation |
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Received:December 30, 2015
Revised:January 06, 2016
Accepted:January 07, 2016
Published Online:May 19, 2016
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| DOI：doi：10.3969/j.issn.1007-7545.2016.06.004 |
| KeyWord:jarosite residue; direct reduction; magnetic separation; reverse flotation |
| Author | Institution |
| CAO Xiao-en |
钢铁研究总院 先进钢铁流程及材料国家重点实验室 |
| XU Hong-jun |
钢铁研究总院 先进钢铁流程及材料国家重点实验室 |
| GUO Yu-hua |
钢铁研究总院 先进钢铁流程及材料国家重点实验室 |
| ZHOU He-min |
钢铁研究总院 先进钢铁流程及材料国家重点实验室 |
| QI Yuan-hong |
钢铁研究总院 先进钢铁流程及材料国家重点实验室 |
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| Abstract: |
| Metallized pellets were produced from Jarosite residue by direct reduction of carbon-containing pellets. Second zinc oxide and lead were recovered from flue gas. Iron concentrate Ⅰ was produced from metallized pellets by grinding and magnetic separation. Iron concentrate Ⅱ was obtained from iron concentrate Ⅰ by reverse flotation process of floating silicon and inhibition of iron. The results show that metallization rate is 98.47%, and volatilization rate of zinc and lead is 98.54% and 86.25% respectively under the optimum conditions including basicity of 2.5, n(C)/n(O)=1.4, reduction temperature of 1 300 ℃, and reduction duration of 30 min. Iron grade in concentrate Ⅰ is 46.66% with iron recovery of 79.79% by magnetic field intensity of 159.2 kA/m. Iron grade in concentrate Ⅱ is 60.30%. |
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