jamesp
Cave Dweller
Member since October 2012
Posts: 36,555
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Post by jamesp on Jan 3, 2017 6:00:15 GMT -5
I was curious how aluminum oxide is crushed to different sizes. Unlike silicon carbide it is tough. The white part of a spark plug is made of aluminum oxide for example. A powerful Raymond mill is a common type of mill used. Aluminum oxide(similar to AO ceramic media) pellets are fed into it. Rotating spring loaded rollers do the crushing. A fan blows the crushed dust after being pulverized out the top and then it is sent to a classifier to be separated into different grits. Cool beans.
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Post by MrMike on Jan 3, 2017 6:47:28 GMT -5
jamesp , They must really have all connections sealed very good since the dust is blown up through the workings.
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,555
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Post by jamesp on Jan 3, 2017 7:08:31 GMT -5
jamesp , They must really have all connections sealed very good since the dust is blown up through the workings. Can not imagine those bearings lasting very long working in that environment. Probably use double /triple seals on each side of bearing.
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