Density Test of Powdered Bamboo Charcoal Based on Response Surface Methodology

The density of powdered bamboo charcoal was measured by vibrating density method. The box Behnken response surface method was used to establish a quadratic mathematical model to analyze the influence of various factors and their interaction on density, in which, the particle size (mesh) of powdered bamboo charcoal, the rotation speed and vibration times of vibrating instrument were taken as investigation factors, and the density of bamboo charcoal was taken as response value. The results showed that under the model conditions, the optimal parameters of bamboo charcoal density test were as follows:powdered bamboo charcoal particle size 120-160 mesh, rotation speed 200 r·min^-1 and vibration frequency 1 000 times, the predicted density was 0.498 g·cm^-3, the average result of validation experiment was 0.483 g·cm^-3, and the deviation from the predicted value was 0.015.