北京科技大学学报2012，Vol.34Issue(4)：373-377,5.
烧结混合料适宜制粒水分的预测
Prediction of suitable water content on the granulation of a sintering mixture
摘要
Abstract
Water content is an important factor which affects the granulation of a mixture and sintering.Research results show that with the water content for granulation increasing,the proportion of fine particles reduces in the granulated mixture,the mean size increases,and the permeability rapidly improves firstly,but then mildly changes even goes down.The point of water content at which the permeability grows smoothly can be used as a criterion of suitable values for granulation,and it is found that the sintering speed reaches maximum at the suitable water content for granulation.The mixture can be divided into two parts by the mathematical method of sieving,one is-0.5 mm as adhering fine powders,the other is ＋0.5 mm as nucleus particles,and the ratio of nucleus particles X＋0.5 was measured.The suitable water content can be predicted based on the model of W=X＋0.5 Wc＋0.72（1-X＋0.5）Wp,in which the maximum capillary water content of adhering fine powders Wp is measured by a saturated water absorption method and the preserved water content of nucleus particles Wc is measured by a centrifugal method.The accuracy of prediction reaches 93.3 % when the absolute error of the suitable water content for granulation is ±0.3 %,which can satisfy the requirement of predicting accuracy.关键词
铁矿石/制粒/烧结/水含量/预测/数学模型Key words
iron ores/granulation/sintering/water content/prediction/mathematical models分类
通用工业技术引用本文复制引用
范晓慧,甘敏,李文琦,王强,谢路奔,胡林,陈许玲,袁礼顺..烧结混合料适宜制粒水分的预测[J].北京科技大学学报,2012,34(4):373-377,5.基金项目
教育部新世纪优秀人才支持计划基金资助项目 （）
湖南省研究生学位论文创新资助项目 （）
中南大学优秀博士学位论文扶植项目 （）
