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Thesis Advisor董元吉
Degree Grantor中国科学院研究生院
Other AbstractPorous pellets have been obtained in this thesis by burning away the combustible material (saw wood-dust) which has previously been mixed in the pellets so as to leave pores behind. Sequence programing temperature change is taken into account in the reduction process. Rate constant is obtained from the heating-up exp. in which temperature changes from 700 TO 1000'C. By comparing, the result is proved reliable. As concerns heating-up speed, the activity energy are nearly the same when heating-up speed do not change greatly, that is that hematite pellet reduction is not affected obviously by heating-up speed. By means of examining the partially reduced samples both macroscopically and microscopically, measuring energy spectrum, the manner by which the reduction of hematite pellet has been determined. Finely, the unreacted-core shrinking model is applied in iso-thermal reduction process. The computed results are in good agreement with the results observed by experiments. And the applicability of non-isothemal mathematical model to hematite-pellets has been discussed. It is appropriate in the conditions of constant activity energy and mono-interface reduction.
Document Type学位论文
Recommended Citation
GB/T 7714
张文楠. 快速流化床径向空隙率分布的数学模型研究[D]. 中国科学院研究生院,1988.
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快速流化床径向空隙率分布的数学模型研究.(4515KB) 限制开放CC BY-NC-SAApplication Full Text
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