Effects of particle size on the flotation behavior of coal slime

In order to investigate the influence of particle size on flotation behavior coal slime, industrial analysis, elementary and composition analysis were carried out slime. The slime is divided into three sizes: −0.5 + 0.25, −0.25 0.074, −0.074 mm, full mm sizes. Through contact angle measurement, wetting heat step-by-step release test hydrophobicity each size; in addition, kinetics different sizes was also out. results show that has a significant effect fine medium 0.074 best hydrophobicity, followed by 0.25 again finally Use Origin software fit six kinetic models data kinetics, analyze maximum combustible recovery [Formula: see text], rate constant (k), correlation coefficient ([Formula: text]) size, first-order model with rectangular distribution floatabilities can better describe size.