Estimating Bubble Loading in Industrial Flotation Cells

Minerals

Khodakaram Gharibi¹  Saeed Farrokhpay¹  Ali Dehghani²  Mahdi Ostadrahimi² 

[1] Metallurgical Engineering, Yazd University, Yazd 98195, Iran;;Faculty of Mining &

关键词: bubble loading;    aeration rate;    frother dosage;    bubble diameter;    flotation;   

DOI  :  10.3390/min9040222

来源: DOAJ

【 摘 要 】

Bubble loading is the ratio of the weight of the solid particles to the bubble’s surface, and it has an effective role in the flotation efficiency. This paper investigates bubble loading an industrial processing circuit through considering the important role of the bubble diameter in calculating bubble loading, and the effect of the aeration rate and frother dosage on the bubble diameter. The ratio of the weight of solid particles to the bubble volume was estimated to be in the range of 8 to 24 g/L. Although increasing the aeration could result in increasing the weight of the particles attached to the bubbles, the bubble loading was reduced by increasing the aeration rate due to its impact on the bubble diameter and the percentage of bubble surface coverage. For example, when the aeration rate was increased from 45 to 146 m³/h, the bubble loading decreased from 23 to 12 g/L. By increasing the frother dosage from 70 to 150 mL/min, the bubble loading increased from 16 to 19 g/L.

【 授权许可】

Unknown