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Naßmahlung in Rührwerksmühlen
Author(s) -
Stadler Reinhold,
Polke Reinhard,
Schwedes Jörg,
Vock Friedrich
Publication year - 1990
Publication title -
chemie ingenieur technik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.365
H-Index - 36
eISSN - 1522-2640
pISSN - 0009-286X
DOI - 10.1002/cite.330621108
Subject(s) - grinding , ball mill , materials science , particle size distribution , particle size , residence time distribution , ball (mathematics) , mill , volumetric flow rate , metallurgy , composite material , process engineering , chemical engineering , flow (mathematics) , mechanical engineering , mechanics , mathematics , engineering , physics , mathematical analysis
Wet grinding in agitated ball mills. To ensure certain product qualities it is necessary to have very fine particles or a narrow particle size distribution. For this process agitated ball mill grinding can be used as well as crystallisation and precipitation. Cost effective grinding of very fine products to a narrow particle size distribution requires that the effects of variation of strain intensity, frequency of impacts, residence time distribution, size of grinding media, viscosity of liquid and concentration of feed material should be known. The most important parameters and their effects on the grinding result are demonstrated, as well as explained by a model, and the consequences for the operating conditions of agitated ball mills are presented. By using small grinding media in agitated ball mills the production rate can be increased, or at the same energy level smaller particles can be obtained by grinding or deagglomeration. At high flow rates and a narrow residence time distribution the feed material becomes more homogeneous. These facts require the development of new or modified types of agitated ball mills.