Method for increasing molybdenum ore recovery using fine-sweeping

Abstract

The invention discloses a method used for improving the recovery of the molybdenum processing by fine sweeping section; the method comprises five selection operations such as fine sweeping I, II, III, IV and V; wherein, fine sweeping I foam and fine sweeping foam are returned to a slurry pond 2 together; fine sweeping II gangue is classified by a hydrocyclone and the overflow thereof is used as fine I given ore; fine sweeping I gangue enters a fine sweeping II flotation machine; the fine sweeping II flotation machine foam enters fine sweeping; fine sweeping II gangue enters a fine sweeping III flotation machine and is classified; the fine sweeping III gangue is re-classified by fine sweeping IV and used as final fine sweeping gangue; the foam thereof is re-returned to the fine sweeping III flotation machine to be classified; after the selection operation of the fine sweeping IV, a floatation column is provided so as to lead the fine sweeping IV gangue to directly enter a newly increased flotation column (fine sweeping V) and to be classified; subsequently, the gangue is directly used as final fine sweeping gangue tail and the foam as well as the fine sweeping III foam and fine sweeping gangue is returned to the fine sweeping II flotation machine and re-classified. The method leads the original fine gangue to be re-classified, reduces the grade of the final gangue and improves the recovery at the same time, and increases the yield of molybdenum concentrates.

Description

[0001] The invention belongs to the technical field of molybdenum beneficiation recovery rate, and mainly relates to a method for improving the recovery rate of molybdenum beneficiation in fine sweeping section. Background technique [0002] The known technical process of the fine sweeping section of molybdenum beneficiation includes: as shown in Figure 1, there are five sorting operations of fine sweep I, fine sweep II, fine sweep, fine sweep III, and fine sweep IV. Among them, the fine sweep I foam, sweep fine foam, coarse concentrate, and fine II tailings are classified by the 2# cyclone, and the overflow is used as the ore feed for the fine sweep I, while the fine sweep I tailings enter the fine sweep II flotation machine , the fine sweeping II flotation machine foam enters the fine sweeping machine, the fine sweeping II tailings enters the fine sweeping III flotation machine sorting, and so on, the fine sweeping III foam and the fine sweeping tailings return to the fine sw...

AI Technical Summary

Problems solved by technology

The original fine sweeping tailings are returned to the rough sweeping mixing tank for recycling, so that the tailings can be reused. However, due to the large enrichment of the fine-grained tailings in the fine sweeping tailings, the cycle of the sweeping and middle tailings is deteriorated. Comprehensive tailings The decline in grade is not large, and the comprehensive recovery rate has not improved much

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