Dry Grinding of Bentonite by Stirred Media Mill

OpenAlex İngilizce

In this study, pin-type vertical stirred media mill was used to perform the dry grinding of bentonite. Grinding time and stirring speed were investigated for the effect on the particle size distribution and energy consumption (Ec) while ball charge and bentonite charge were kept constant as 60% and 40%, respectively. It was observed that raw bentonites can be ultra-fine dry grinded using vertical stirred media mills for the potential dry uses of bentonites. The experimental results revealed that a ground bentonite product having a d80 value of about 10 µm was obtained with 128.1 kWh/ton energy consumption. Optimum operational parameters were selected as 60% ball charge, 40% bentonite charge, 600 rpm stirring speed, and 20 min grinding time.