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gypsum powder grinding ball mill

Apr 01, 2016· The properties of themicronized gypsum productsobtained were determined, among which the best set of results was obtained with 80% of critical speed (85 rpm) for operation speed, 0.30 as theball filling ratio(J b), 20% (2 cm), 60% (3 cm) and 20% (4 cm) as theballsize distribution, 0.05 as thepowder fillingratio (f c), 0.5% of powder as the grinding aid ratio, and a grinding time of 30 min, …

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