Slurry rheology in wet ultrafine grinding of industrial minerals: a review

被引:149
作者
He, MZ [1 ]
Wang, YM
Forssberg, E
机构
[1] Lulea Univ Technol, Dept Chem Engn & Geosci, SE-97187 Lulea, Sweden
[2] S China Univ Technol, Inst Mat Sci & Engn, Guangzhou 510640, Peoples R China
关键词
rheology; wet ultrafine grinding; slurry; fine particles; industrial minerals; dispersants;
D O I
10.1016/j.powtec.2004.09.032
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Wet ultrafine grinding has been increasingly used for production of ultrafine powders in various industries. It has been known that slurry rheology significantly influences the grindability of industrial minerals in wet ultrafine grinding. This review represents some previous work with respect to slurry rheology in ultrafine grinding. In this review, some methods for the characterization of the slurry rheology and some empirical equations modelling rheological behaviours of slurries were presented. The semiempirical model incorporating slurry rheology, solids concentration, particle size and slurry temperature was described. In addition, on-line measurement for the slurry rheology control was also discussed. In the case of ultrafine grinding, various parameters (such as solid concentration, particle size and distribution, particle shape, temperature, rotation and pH, use of dispersants), which affect the slurry rheology, have been described. It was revealed that the optimization of the rheological behaviours of slurry in ultrafine grinding could increase throughput, energy efficiency and product fineness as well. It is suggested to further study the mechanisms of slurry rheology in the presence of chemical dispersants in wet ultrafine grinding. It is desired to develop a model, which can represent a relation among slurry rheology, comminution parameters, amount of dispersant, energy efficiency and particle size characterization. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:94 / 112
页数:19
相关论文
共 93 条
[1]  
ADAMSON AW, 1990, PHYSICAL CHEM SURFAC
[2]   MORPHIC FEATURES OF SOLID PARTICLES AFTER MICRONIZATION IN THE FLUID ENERGY MILL [J].
AKBARIEH, M ;
TAWASHI, R .
INTERNATIONAL JOURNAL OF PHARMACEUTICS, 1987, 35 (1-2) :81-89
[3]  
AUSTIN LG, 1984, PROCESS ENG SIZE RED, P80
[4]   Investigation of methods for direct rheological model parameter estimation [J].
Bailey, WJ ;
Weir, IS .
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING, 1998, 21 (1-2) :1-13
[5]   Rheology of solid-liquid suspensions in reduced gravity [J].
Bakhtiyarov, SI ;
Overfelt, RA .
POWDER TECHNOLOGY, 1999, 104 (02) :151-156
[6]   Application of fuzzy cognitive maps to factors affecting slurry rheology [J].
Banini, GA ;
Bearman, RA .
INTERNATIONAL JOURNAL OF MINERAL PROCESSING, 1998, 52 (04) :233-244
[7]  
BELFADHEL H, 1999, POWDER TECHNOL, V105, P362
[8]   The influence of suspension properties on ultra-fine grinding in stirred ball mills [J].
Bernhardt, C ;
Reinsch, E ;
Husemann, K .
POWDER TECHNOLOGY, 1999, 105 (1-3) :357-361
[9]  
BHASKAR V, 1993, MECH SUSPENSION STAB, V75, P1
[10]   Motion and stress intensity of grinding beads in a stirred media mill .1. Energy density distribution and motion of single grinding beads [J].
Blecher, L ;
Kwade, A ;
Schwedes, J .
POWDER TECHNOLOGY, 1996, 86 (01) :59-68