JI Huimin¹， HUANG Youliang²， YI Chuijie^1,2， ZHAN Sheng²， SUN Guangtong²

(1. School of Mechanical and Automotive Engineering, Qingdao University of Technology，Qingdao 266520，China;2. School of Mechanical and Electrical Engineering, Qingdao University，Qingdao 266071，China)

Abstract: In order to clarify the mechanism of centrifugal granulation and explore the influence of granulator diameter, surface roughness and structure on the granulation effect, based on the control variable method, three groups of liquid slag centrifugal granulation experiments were carried out. The results show that the granulation efficiency of the granulator is closely related to its diameter. In the range of 120-250 mm, the larger the diameter of the granulator, the higher the granulation efficiency; the surface roughness of the granulator has a significant effect on the granulation effect. The granulator with surface roughness Ra=12.5 has the best granulation effect; compared with the flat disc type, the granulation effect of the cup granulator is better, and the cup granulator can effectively reduce the number of large particles, the block and the sheet, wherein the granulation effect is best when the cup granulator has an inward angle of between 120 ° and 150 ° and a depth of about 20 mm.

Keywords: liquid slag; centrifugation; dry granulation; granulat

文章编号：1008-5548(2020)02-0063-07

DOI:10.13732/j.issn.1008-5548.2020.02.010

中图分类号：TF09                               文献标志码：A

收稿日期： 2019-06-26，修回日期：2019-07-19，在线出版时间：2019-12-30 17:17。

基金项目：国家重点研发计划项目，编号2017YFB0603602-03

第一作者简介：纪慧敏(1994—)，男，硕士研究生，研究方向为机械工程。E-mail：1376297444@qq.com。

通信作者简介：战胜(1976—)，男，博士，讲师，研究方向为机械电子工程。E-mail：ylxhmhyl@163.com。