Surface coating of micronized calcite (CaCO3) with stearic acid via an attritor mill

Authors : Ahmad Farid Ehsan, Öner Toraman

Pages : 760-765

Doi:10.28948/ngumuh.1390147

View : 171 | Download : 120

Publication Date : 2024-07-15

Article Type : Research Paper

Abstract :In this study, the surface coating (modification) of micronized calcite (CaCO3, d50=135 μm) in a stirred media (bead) mill with stearic acid was investigated. As a result of 15 min grinding and 5 min coating experiments, a product with d50=2.15 μm and specific surface area of 3.21 m2/cm3 was obtained. The activation rate of this final product as an indicator of coating rate was 97.7%. According to the optimum coating results, the stearic acid rate was determined as 1%, the modification time was 7.5 min, the ball load was 900 g and the stirring speed was 600 rpm.
Keywords : Kalsit, Stearik asit, Yüzey modifikasyonu, Kuru kaplama, Aktive oranı