Application of Medium Beating in ZDPM Hydraulic Disk Mill--Effectiveness and Mechanism of Concentrated Beating in Straw Pulp and Waste Pulp

Abstract The production and application effects of concentrated beating in straw pulp and waste pulp were discussed from the aspects of pulping pulp quality, paper product performance, beating energy consumption, etc.; the “internal friction effect” was proposed in the medium and heavy beating mechanism, which enriched the beating theory. The reasons for the superiority of medium-strength beating are described. Key words ZDPM disc mill Straw pulp waste medium pulping mechanism Medium Consistency Refining with ZDPM Refiner Liu Shiliang Li Shiyang Chen Zhonghao Cao Guoping (South China University of Technology, Guangzhou, 510640) ABSTRACT This paper discussed the benefits of medium consistency refining of st "Plant of waste pulp stock with a ZDPM refiner to the quality of refined pul p, pro perty of paper product and energy consumption of refining. "Internal-Friction Effect" theory was suggested to explain the mechanism of medium consistency ref ining.KEYWORDS ZDPM Refiner,straw pulp,waste paper stock,medium consistency refini ng,mechanism This study belongs to the Natural Science Foundation of Guangdong Province and the "85" key scientific and technological projects. Liu Shiliang (South China University of Technology, Guangzhou, 510640) Li Shiyang (South China University of Technology, Guangzhou, 510640) Chen Zhonghao (South China University of Technology, Guangzhou, 510640) Cao Guoping (South China University of Technology, Guangzhou, 510640) References 1, Li Shiyang et al. ZDPM disk Effect of medium-strength beating in the mill (I). Guangdong Pulp and Paper, 1998(5): 18~2 02, Liu Shiliang et al. Production Practice of 45g/m2 Anti-sticking Base Paper Made by ZDPM Disk Mill in Medium Thickness. Heilongjiang Paper, 1998 ;(4):17～183,Liu Shiliang et al.. Heavy-duty medium in the disc refiner to make carbonless carbon paper. Paper and paper, 1999(4):12 4, Liu Shiliang et al. Characteristics of concentrated pulp in commercial pulp. Paper and paper, 1999 (1): 345, Liu Shiliang et al. Study on medium-strength beating of Russian hardwood commercial pulp. Heilongjiang Paper, 1998(2): 6~7 6, edited by Chen Keci. Fluid dynamics of slurry in paper machine wet end. Beijing: Light Industry Press, 1984 Edition 7, Matti Halme. How to Use Formucate to Study Refining Equipment. Paper Trade, 1964; 983-985 Received: 1999-12-21 (Revised)