NOUFERROUS METALLURGICAL EQUIPMENT

In the molybdenum beneficiation process, the combined use of column and cell (joint application of flotation column and flotation cell) is generally regarded as an efficient and advantageous technological process. Molybdenum flotation recovery is faced with characteristics such as fine embedding particle size and high oxidation degree of ores. Aiming at the existing flotation process, the flotation dynamics tests and analyses of molybdenum flotation column and flotation cell were carried out. The air dispersion test shows that the air dispersion degrees of each flotation cell and flotation column are all greater than 2, the air is uniformly dispersed on the cross-section of the tank, and the air dispersion effect is ideal. The bubble loading rate test indicates that the shedding probability of coarse particle minerals during the upward transportation process is small, and the recovery effect is good, while fine particle minerals are not effectively enriched, and the recovery effect is poor. The slurry suspension capacity and gas holdup tests show that the overall distribution of gas holdup in the flotation cell is relatively uniform, there is no obvious particle size stratification in the tank, but there is a slight concentration stratification phenomenon. The residence time distribution test results show that the actual flotation time is longer than the ideal flotation time, and there may be dead zones inside the flotation cell.