環状多槽型ビーズミルによる珪砂の破砕特性

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  • The grinding of silica sand by a coaxial circular multi-vessel type beads mill.
  • カンジョウ タ ソウガタ ビーズ ミル ニ ヨル ケイサ ノ ハサイ トクセ

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The batch grinding of silica sand was carried out using a coaxial circular multivessel type beads mill. The long-term grinding caused reversed grinding where the particle size enlarged and reduced simultaneously. This reversed grinding occurred when the particle size became less than a critical value. The critical median value was larger when the peripheral speed of the agitator pin was larger. Howerer, the BET specific surface area even increased within the range of reversed grinding.<br>The grinding rate constant estimated from Tanaka's equation was proportional to (the peripheral speed of the pin)1.55, and it was inversely proportional to the particle concentration. The number of pins gave a different effect on the grinding performance from that resulting from the peripheral speed of the pin.

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  • 粉体工学会誌

    粉体工学会誌 26 (6), 417-423, 1989

    一般社団法人 粉体工学会

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