| 铁矾渣热分解过程研究 |
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| 引用本文： | 曹晓恩,洪陆阔,周和敏,唐小芳,齐渊洪.铁矾渣热分解过程研究[J].矿冶工程,2016,36(2):67-70. |
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| 作者姓名： | 曹晓恩 洪陆阔 周和敏 唐小芳 齐渊洪 |
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| 作者单位： | 1.钢铁研究总院 先进钢铁流程及材料国家重点实验室, 北京 100081;
2.内蒙古北方重型汽车股份有限公司技术中心, 内蒙古 包头 014030 |
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| 基金项目： | 国家科技支撑计划资助项目(2012BAB14B00) |
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| 摘 要： | 采用DSC-TG和XRD分析方法对铁矾渣热分解过程进行了研究。结果表明: 铁矾渣的热分解包括脱水、脱氨、氧化和晶型转变等复杂步骤; 经750 ℃焙烧, 铁矾渣呈红棕色, 最终产物主要为ZnFe2O4和Fe2O3; 基于Kissinger法和Flynn-Wall-Ozawa法得到铁矾渣在350～450 ℃和630～720 ℃温度区间热分解反应的活化能分别约为260和230 kJ/mol, 频率因子分别为3.07×1019和1.29×1012。
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| 关 键 词： | 铁矾渣 热分解 分解产物 动力学参数 |
| 收稿时间： | 2015-10-09 |
Thermal Decomposition Process of Jarosite Residue |
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| CAO Xiao-en,HONG Lu-kuo,ZHOU He-min,TANG Xiao-fang,QI Yuan-hong.Thermal Decomposition Process of Jarosite Residue[J].Mining and Metallurgical Engineering,2016,36(2):67-70. |
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| Authors: | CAO Xiao-en HONG Lu-kuo ZHOU He-min TANG Xiao-fang QI Yuan-hong |
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| Affiliation: | 1. State Key Laboratory of Advanced Steel Processes and Products, Central Iron and Steel Research Institute, Beijing 100081, China;
2.Technical Center of Inner Mongolia North Hauler Joint Stock Co Ltd, Baotou 014030, Inner Mongolia, China |
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| Abstract: | Based on the analysis using DSC-TG and XRD, the thermal decomposition process of jarosite residue is found to be composed of several steps, including dewatering, deamination, oxidation and crystal transformation. After roasted at 750 ℃, jarosite residue turned to be red brown, with ZnFe2O4 and Fe2O3 predominantly in the end product. The jarosite residue obtained by the Kissinger method and Flynn-Wall-Ozawa method was then subjected to thermal decomposition process at the temperature range of 350～450 ℃ and 630～720 ℃, with the activation energy at around 260 and 230 kJ/mol, and frequency factor of 3.07×1019 and 1.29×1012, respectively. |
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| Keywords: | jarosite residue thermal decomposition decomposition products kinetic parameters |
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