Study on Thermal Decomposition and Oxidation Characteristics of Iron Ores

机译：铁矿石的热分解和氧化特性研究

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Thermal decomposition and oxidation characteristics of three typical iron ores were studied with differential thermal analysis and XRD techniques. The results displayed that DSC curve of limonite showed a significant endothermic arc in the range of 605-1150 ℃. It was thought that the decomposition of crystal water in limonite increased the porosity and surface area of limonite, which improved the adsorption capacity of limonite. DSC curve of hematite showed a weak endothermic arc in the range of 312-652 ℃. DSC curve of magnetite showed a significant exotherm arc in the range of 162-915 ℃. It was thought that lots of heat released when Fe_3O_4 in magnetite was oxidized.

机译：利用差热分析和XRD技术研究了三种典型铁矿石的热分解和氧化特性。结果表明，褐铁矿的DSC曲线在605〜1150℃范围内有明显的吸热弧。认为褐铁矿中结晶水的分解增加了褐铁矿的孔隙率和表面积，从而提高了褐铁矿的吸附能力。赤铁矿的DSC曲线在312-652℃范围内显示出较弱的吸热弧。磁铁矿的DSC曲线在162-915℃范围内有明显的放热弧。可以认为，磁铁矿中的Fe_3O_4被氧化时会放出大量的热量。

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来源
《Proceedings of the 3rd Pan American materials congress》|2017年|643-652|共10页
会议地点 San Diego(US)
作者
Qingfeng Kang; Jianliang Zhang; Donghui Liu; Zhengjian Liu; Jie Yan;
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作者单位

School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing, Beijing 100083, China;

School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing, Beijing 100083, China;

School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing, Beijing 100083, China;

School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing, Beijing 100083, China;

Hebei Iron Steel Group;

Chengde Iron and Steel Co.,Chengde 067002, Hebei, China;

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会议组织
原文格式 PDF
正文语种 eng
中图分类
关键词
Iron ore; Thermal decomposition oxidation characteristics; Optimization of ore blending; Sintering;

机译：铁矿;热分解氧化特性；优化矿石混合；烧结;

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2. A KINETIC STUDY OF THE THERMAL DECOMPOSITION OF IRON(III) HYDROXIDE OXIDES .1. ALPHA-FEO(OH) IN BANDED IRON FORMATIONS [J] . Koga N., Okada S., Tanaka H., Thermochimica Acta: An International Journal Concerned with the Broader Aspects of Thermochemistry and Its Applications to Chemical Problems . 1995,第0期

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3. Study on kinetics of thermal decomposition of low LOI goethetic hematite iron ore [J] . Beuria P.C., Biswal S.K., Mishra B.K., 矿业科学技术（英文版） . 2017,第006期

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4. Study on Thermal Decomposition and Oxidation Characteristics of Iron Ores [C] . Qingfeng Kang, Jianliang Zhang, Donghui Liu, Pan American Materials Congress . 2017

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Study on Thermal Decomposition and Oxidation Characteristics of Iron Ores

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