| 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(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ZnFe_2O_4和Fe_2O_3;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 k J/mol,频率因子分别为3.07×10~(19)和1.29×10~(12)。
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| 关 键 词： | 铁矾渣 热分解 分解产物 动力学参数 |
Thermal Decomposition Process of Jarosite Residue |
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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 ZnFe2 O4 and Fe2 O3 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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