Influence rule of downtime on heat transfer in converters
在变换器在热转移上影响空闲时间的统治作者机构：School of Metallurgical and Ecological Engineering University of Science and Technology Beijing Beijing 100083 China
出 版 物：《Journal of Iron and Steel Research International》 (国际钢铁研究杂志)
年 卷 期：2019年第26卷第3期
页 面：251-258页
核心收录：
基 金：National Natural Science Foundation of China(Grant Nos.51674030 and 51574032) National Key Research and Development Program of China(Grant No.2016YFB0601301)
主 题：Downtime Converter heat dissipation Scrap ratio Temperature field Finite element
摘 要：The models for calculating the heat transfer in converters allow the accurate control of heat dissipation caused by downtime,and thus help in crease scrap ratio and reduce energy consumptio *** 17 was used to establish such a model to analyse the coupling law between the downtime and heat dissipation of the converter and the temperature drop of molten *** was measured by infrared detection,and model accuracy was verified by comparative *** variation law of the amount of cold charge added for different downtimes under different process conditions was *** results show that the range of the variation of heat dissipation caused by downtime is 8.9-78.5 *** the downtime increases by 30 min,heat dissipation of dephosphorisation(deP)and decarburisation(deC)converters increases by about 23.4 and 41.3 GJ,*** a certain smelting cycle,the temperature drop of the molten iron for deP,deC and conventional converters increases by about 12.5,15.0 and 17.0 K,respectively;and the amount of scrap added in the double-linking and conventional smelting processes decreases by 0.93 and 0.75%,respectively.
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