THE EFFECT OF GRINDING MEDIA PERFORMANCE ON WET MILLING OF CALCITE

Diler KATIRCIOĞLU BAYEL

THE EFFECT OF GRINDING MEDIA PERFORMANCE ON WET MILLING OF CALCITE

Diler KATIRCIOĞLU BAYEL

Öz

This paper aimed to investigate the effects of monosized (0.2, 0.5 and 1.0 mm) and bimodal (0.2-1 mm) media size grinding design on wet grinding of calcite (CaCO₃, d₅₀=5.4 µm) powders to produce submicron particles, and it was performed in a lab-scale (750 ml) stirred media mill. The effects of different amounts of finer media (25 wt.%, 50 wt.% and 75 wt.%) and finer to coarser grinding media size ratios (0.25 and 0.5) were investigated. High density zirconia (ZrO₂) grinding media (0.2, 0.5 and 1.0 mm) were used for the submicron grinding experiments. The outcomes of the grinding experiments were assessed based on the product particle size (d₅₀, d₈₀), cumulative particle size and specific surface area (m²/kg). The results show that finer grinding media was not less effective at low stirrer speeds.

Anahtar Kelimeler

Stirred media mill, Media size, Calcite

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Referanslar

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