Structural parameters of vertical high-humidity salt mud crusher

ZHU Gui-hua1,2, TANG Hao-ting1,2, YI Shan-zhen1,2, HE Wei-ze1,2, CHEN Yong1,2
(1.College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China;
2.Hunan Zhong Da Shan Shui Environmental Protection Technology Co., Ltd., Changsha 410000, China)

Abstract: Aiming at the problems of easy clogging and low crushing efficiency of the highhumid salty slurry crusher, the selfmade vertical salty slurry crusher was taken as the research object and three rotor structures of doubleblade structure, doublechain structure and bladechain combined structure were designed. Experimental method was applied to study the influence of the rotor structure on the particle size distribution and wallsticking thickness at different rotating speeds, and MATLAB was used to perform RR distribution of the obtained data. The variation curves of particle size distribution and wall thickness with speed and structure were obtained. The influence of the crusher structure on the inflection point of the flexible sticky wall was analyzed. The results indicate that with the increase of the rotor speed, the crushing particle size decreases first and then increases. When the rotating speed is 1 200 r/min, the crushing effect is the best. The thickness of the sticky wall increases with the increase of the speed, the wallsticking thickness of doublechain structure and bladechain combined structure eventually tend to stabilize and the stable time are 240 min and 300 min respectively. The fitted R2 is greater than 0.9 and the ratio is 83.3%. The fitted results can be used to predict the particle size distribution of the particles. The research results have reference value for the design and application of the salty slurry crusher.
Key words: crusher; high wet salt mud; particle size distribution; stick wall characteristics; R-R fitting