Effect of chemical additive on stirred bead milling of calcite powder

• Published in: Powder technology 2012-05, Vol.221, p.189-191
• Main Author: Toraman, O.Y.
• Format: Article
• Language: English
• Subjects: additives; Applied sciences; calcite; Calcite powder; calcium carbonate; Chemical additive; Chemical engineering; Exact sciences and technology; Grinding; milling; Miscellaneous; particle size distribution; Solid-solid systems; Stirred bead mill; surface area; Ultrafine grinding
• ISSN: 0032-5910; 1873-328X
• DOI: 10.1016/j.powtec.2011.12.067

The effect of liquid additive on the dry ultrafine grinding of calcite powder (CaCO3) was investigated by using a stirred bead mill. The experiments were carried out by a batch operation, and the change in particle size distribution (PSD) and volumetric surface area (Sv) (m2/cm3) of calcite. The results show that the chemical additive promotes the fine grinding of calcite and that the maximum volumetric surface area of calcite obtained with additives 0.2%. The effect of liquid additive on the dry ultrafine grinding of calcite was investigated by using a stirred mill. The experiments were carried out by a batch operation, and the change in particle size distribution and volumetric surface area of calcite. The results show that the chemical additive promotes the fine grinding of calcite. [Display omitted] ► Stirred bead mill used for grinding particles to submicron sizes. ► Liquid additive effect on the dry ultrafine grinding of calcite powder. ► The change in particle size distribution and volumetric surface area.