Abstract
The aim of this work was to investigate micro fine size dry grindability of talc in a stirred ball mill. The effects of various parameters such as grinding time, stirrer speed, powder filling ratio and ball filling ratio were investigated. Alumina balls were used as grinding media. Experiments were carried out using the 24 full factorial design. The main and interaction effects were evaluated using the Yates method. Test results were evaluated on the basis of product size and surface area.
Highlights
Talc, the softest of all minerals with a Mohs hardness of 1, is an organophilic, water repellent and chemically inert mineral
It is pertinent to improve the basic properties of industrial minerals by the grinding method employed. Milling of these minerals can be performed in the conventional tumbling, impact, stirred ball, jet and vibration mills
Due to higher power density and better grinding efficiency, high-speed stirred ball mills are considered as an interesting alternative to conventional tumbling mills and vibratory mills for fine grinding and delamination processes in the minerals industry [4,5,6]
Summary
The softest of all minerals with a Mohs hardness of 1, is an organophilic, water repellent and chemically inert mineral. It is characterized as a hydrated magnesium sheet silicate with the formula Mg3Si4O10(OH). It is pertinent to improve the basic properties of industrial minerals by the grinding method employed. Milling of these minerals can be performed in the conventional tumbling, impact, stirred ball, jet and vibration mills. Due to higher power density (density of the energy absorbed by the particles) and better grinding efficiency, high-speed stirred ball mills are considered as an interesting alternative to conventional tumbling mills and vibratory mills for fine grinding and delamination processes in the minerals industry [4,5,6]
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