Oxidation of Pure Solid CaS with Ar-O_2 Gas Mixture

K. Kobayashi; T. Hiraki; T. Nagasaka

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Oxidation of Pure Solid CaS with Ar-O_2 Gas Mixture

机译：用Ar-O_2混合气体氧化纯固体CaS

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Oxidation behavior of CaS in oxidizing atmosphere has been investigated for the regeneration process of desulfurization slag by oxidation. The temperature range of oxidation of CaS reagent with Ar-21%O_2 gas was 973 to 1423 K. The weight gain was observed in the lower temperature range and reached at the maximum value at 1173 K while weight gain turned to decrease when the reaction temperature was higher than 1173 K. It was clarified that CaS was oxidized to CaSO_4 under 1173 K or to CaO over 1373 K by the measurement of oxidation rate, XRD and thermodynamic analysis. The results strongly suggested that sulfur removal from the sulfur containing slag may be possible at temperatures of 1223 K or higher by the oxidation of with air.

机译：研究了CaS在氧化气氛中的氧化行为，用于氧化脱硫渣的再生过程。 CaS试剂用Ar-21％O_2气体氧化的温度范围为973至1423K。在较低温度范围内观察到重量增加，并且在1173 K达到最大值，而随着反应温度的增加，重量增加逐渐减少。氧化速率的测定，X射线衍射和热力学分析表明，CaS在1173 K以下被氧化为CaSO_4，在1373 K以上被氧化为CaO。结果强烈表明，在1223 K或更高的温度下，通过用空气进行氧化，可以从含硫炉渣中脱硫。

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来源
《High temperature materials and processes》 |2012年第5期|p.667-673|共7页
作者
K. Kobayashi; T. Hiraki; T. Nagasaka;
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作者单位

Former graduate student, Tohoku University, now Sumitomo Mining Co., Toyo, Japan;

Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan;

Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
原文格式 PDF
正文语种 eng
中图分类
关键词
sulfur removal; desulfurization slag; CaS oxidation; secondary steelmaking; desulfurization flux;

机译：脱硫脱硫渣CaS氧化;二次炼钢;脱硫通量;

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Oxidation of Pure Solid CaS with Ar-O_2 Gas Mixture

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