Experimental research on the critical bridging span for a silo. Part 1: The flow characteristics of coarse granular materials

Autor: Hideto Haze, Takemasa Yamada, Masatoshi Kato, Tomio Tamura
Rok vydání: 1985
Předmět:
Zdroj: Journal of the Society of Powder Technology, Japan. 22:511-521
ISSN: 1883-7239
0386-6157
DOI: 10.4164/sptj.22.511
Popis: There are many storage systems for coarse granular materials, such as coal and limestone, These systems include open piles, silos, domes, and storehouses. The silo system is better than other existing systems from the view point of environmental protection, effective use of a site, centralized control, and maintaining the quality of storage materials. For the silo system, however, the most important problem in design is to decide the hopper geometry parameters of the outlet provided at the bottom part of the silo. Blockage and arching in a silo never take place when the hopper geometry parameters are designed appropriately. For use in the theoretical analysis of the hopper section, there are a number of test methods for grasping the properties of fine granulars, but a test method suitable for coarse granulars, such as coal and limestone have yet to be established. This report shows the results of the flow characteristics by means of static compaction and the uniaxial compression test methods. Therefore, the flow characteristics of coarse granular materials, and those at the time of long-term storage are studied here.
Databáze: OpenAIRE