As a basic and pillar industry, coal is our country’s most important base energy sources, and plays an important role in the development of National Economy. It is thus apparent that we need to emphasize on greater coal production and one way of doing this is by increasing the crushing circuit Mineral Equipment efficiency. The crushing circuit comminution has jaw crusher (primary crushing) and impact crusher (secondary crusher).Impact crusher efficiency can be increased by reducing gap size, by using air blasters to stop clogging. We can increase the jaw crusher (jaw crusher for sale) efficiency by using fluid coupling as by using it the torque becomes uniform and starting torque is increased. The result of the study was that by reducing gape size from 10 inch to 9.5 inch the percentage of fine particles (–.5 mm) increased from 15.89 to 17.21%. The principle conclusion is that decreasing gap size will cause more impact of hammer on coal particle and more crushing is done.
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