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  • 标题:EFFECT OF MECHANICAL ACTIVATION ON THE SODA ROASTING KINETICS OF CHROMITE
  • 其他标题:KROMİTİN SODA KAVURMASI KİNETİĞİNE MEKANİK AKTİVASYONUN ETKİSİ
  • 本地全文:下载
  • 作者:Güven YARKADAŞ ; Kenan YILDIZ
  • 期刊名称:Sakarya University Journal of Science
  • 印刷版ISSN:1301-4048
  • 电子版ISSN:2147-835X
  • 出版年度:2010
  • 卷号:14
  • 期号:2
  • 语种:English
  • 出版社:Sakarya University
  • 摘要:Soda roasting kinetics of non-activated and mechanically activated chromite was investigated. It was determined that the reaction was diffusion controlled between 700 – 900°C and chemical reaction controlled between 900 – 1200°C. The activation energy of first step for soda roasting of non-activated chromite was 170 kJ/mol and this value decreased to 141.8 kJ/mol for 30 min activated chromite and 79 kJ/mol for 120 min activated chromite. The activation energies for the second step was calculated as 64.7 kJ/mol for non-activated chromite, 43 kJ/mol for 30 min activated chromite and 25.1 kJ/mol for 120 min activated chromite. Mechanical activation reduced the activation energy for the soda roasting of chromite.
  • 其他摘要:Mekanik aktive edilmemiş ve mekanik aktive edilmiş kromitin soda kavurması kinetiği incelenmiştir. Reaksiyonun 700-900°C aralığında difüzyon kontrollü, 900-1200°C aralığında ise kimyasal reaksiyon kontrollü olduğu tespit edilmiştir. Mekanik aktive edilmem
  • 关键词:chromite;chromate;soda roasting kinetics;mechanical activation
  • 其他关键词:kromit;kromat;soda kavurması kinetiği;mekanik aktivasyon
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