The Effect of Type and Dosage of Frothers on Coarse Particles Flotation

Frothers havea profoundeffectonbubble size and also flotation efficiency. In present study the effect of type and dosage of frothers on the flotation response of coarse particles of quartz was investigated.  Therefore, flotation response of coarse particles using frothers such as MIBC, pine oil, poly propylene glycol with concentration of ۰, ۲۵, ۵۰ and ۷۵ g/t, was obtained respectively. For all used frothers, maximum recovery was obtained around frother dosage of ۲۵ g/t and with increasing frother dosage, flotation recovery decreased.  With increasing frother dosage, bubble diameter, d۳۲, decreased and when Poly Propylene Glycol, MIBC and Pine Oil were used as frother, bubble diameter increased. Maximum bubble diameter was obtained around Pine Oil and frother dosage of ۲۵ g/t and minimum bubble diameter was obtained around Poly Propylene Glycol and frother dosage of ۷۵ g/t. As the particle size increased, the probability of collision increased and with using Poly Propylene Glycol, MIBC and Pine Oil, probability of collision increased, respectively. Maximum collision probability was obtained around ۶۵.۴۶ % with Poly Propylene Glycol dosage of ۷۵ g/t and particle size of ۵۴۵ microns and minimum collision probability was obtained around ۱.۴۳ % with Pine Oil dosage of ۲۵ g/t and particle size of ۲۵۶ microns.

کلیدواژه ها:

Flotation ، Coarse particle ، Frother ، Collision probability