The ball mill is generally used to grind material 1/4 inch and finer, down to the particle size of 20 to 75 microns. To achieve a reasonable efficiency with ball mills , they must be operated in a closed system, with oversize material continuously being 
Read More...
		    Read the complete post at http://feedproxy.google.com/~r/OnlineAutismCommunity/~3/Vp-Jvwu2gyQ/nodesball-mill-has-great-advantages-crushing-equipment
            
	        Posted
		    
Jun 19 2012, 06:44 PM
			by
		    
Autism Blogger