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Particle-Size Distribution Dependent upon Crushing Mechanism and Crushing Circuit  

Choi, Do-Young (Department of Energy & Resource Engineering, Chonnam National University)
Kim, Wan-Tae (Mineral Processing Division, Korea Institute of Geoscience and Mineral Resources)
Kim, Sang-Bae (Mineral Processing Division, Korea Institute of Geoscience and Mineral Resources)
Publication Information
Journal of the Mineralogical Society of Korea / v.23, no.4, 2010 , pp. 297-303 More about this Journal
Abstract
We report the particle-size distribution and comminution charactersitics of dolomite depending upon crushing equipment (hammer crusher and roll crusher) and crushing circuit (open and closed). The quantity of fine particles (< 100 mesh) produced by hammer crusher was 34 wt.% which is about three times that by roll crusher. The quantity of 14~25 mesh size fraction by roll crusher was 20 wt.% higher than that produced by hammer crusher. 80 wt.% of the crushing products by hammer crushing was under 35 mesh in size, while the particles produced by roll crushing were relatively coarse. The particle size of both the hammer and roll crushers decreased by employing closed crusing circuit in comparison to open circuit. Products of required particle-size were obtained effectively depending on appropriate crushing equipment and crushing circuit.
Keywords
Crushing mechanism; crushing circuit; dolomite; hammar crusher; roll crusher;
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