仕事指数の推定

抄録

Recently the authors proposed the following experimental formula expressing the rate constant of degradation of under-size particles, K_x, during ball mill grinding.
K_x=C₁x/x_fH_V^-0.47W_x^-1.5
where x_f is the feed size, x, the sieve size and W_x, the feed weight.
On the other hand, Work Index W_i proposed by Bond is inversely proportional to the ball mill grindability G_b·p^0.82, and G_b·p is proportional to K_x·W_x.
From the above results, it was found that Work Index W_i can be expressed by the dimensionless Vickers hardness H_V and density ρ of the material.
W_i=C₅·(x/x_f)^-0.32H_V^0.39·ρ^0.41