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A study on isothermal reduction kinetics of titaniferous magnetite ore using coke dust, an industrial waste
Canadian Metallurgical Quarterly ( IF 1.3 ) Pub Date : 2018-12-05 , DOI: 10.1080/00084433.2018.1553750
Bitan Kumar Sarkar 1 , Maharshi Ghosh Dastidar 1 , Rajib Dey 1 , Gopes Chandra Das 1
Affiliation  

ABSTRACT In the present study, isothermal reduction kinetics of titaniferous magnetite ore (TMO) fines (below 75 µm particle size) using coke dust, an industrial waste, in the form of briquettes have been performed at temperatures ranging from 1273 to 1473 K over varying reduction times: 5, 10, 20, 30, 40 & 60 min. This process aims at the efficient utilisation of TMO which can serve as an alternate potential source of iron, titanium and vanadium. Chemical analysis of the briquette reduced at 1473 K for 60 min, yields a maximum of 89.56% degree of metallisation. Contracting geometry (CG3) is found to be the dominant driving mechanism involved and the activation energy of the reaction is evaluated as 59.52 KJ mol−1.

中文翻译:

利用工业废料焦尘等温还原钛铁矿的动力学研究

摘要 在本研究中,钛磁铁矿 (TMO) 细粉(粒径低于 75 µm)使用焦粉(一种工业废物,以煤球的形式)的等温还原动力学在 1273 至 1473 K 的温度范围内进行了不同的还原时间:5、10、20、30、40 和 60 分钟。该工艺旨在有效利用 TMO,它可以作为铁、钛和钒的替代潜在来源。煤球的化学分析在 1473 K 下还原 60 分钟,产生最大 89.56% 的金属化度。发现收缩几何(CG3)是所涉及的主要驱动机制,反应的活化能被评估为 59.52 KJ mol-1。
更新日期:2018-12-05
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