Aluminous Minerals for Caustic Processing of Scheelite
Mar 27, 2017 Also, the total mass ratio of ball to mixture was 49:1. The rotational speed of the mill was kept constant at 600 rpm. The milling operation was composed of two steps. First, the mixture of scheelite and NaOH was added into the milling pot with 7 stainless steel balls (15 mm in diameter), with grinding time changed up to 3 hours.
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