An inclined plate overflow pulp classification system and pulp classification process

Abstract

The invention relates to a baffle-plate overflowing ore pulp grading system and an ore pulp grading process. Ore pulp enters a cyclone to be subjected to centrifugal separation, and materials with the size fraction being larger than 74 micrometers are discharged from a sand settling opening of the cyclone, are ground by a mill and then return into the cyclone; materials with the size fraction being smaller than 74 micrometers are discharged from an overflowing opening of the cyclone, are temporarily stored in a buffer tank and then are delivered into a baffle-plate thickener by a first-grade slurry pump to be subjected to settling separation; materials with the size fraction being larger than 37 micrometers are discharged from an underflow opening of the baffle-plate thickener, and materials with the size fraction being smaller than 37 micrometers are discharged from an overflowing opening of the baffle-plate thickener and subjected to large slag removal through a 0.5 mm slag-blocking screen; the ore pulp with large slag removed enters a mixing tank to be evenly mixed and then is delivered into a 0.8mm filter through a second-grade slurry pump to be subjected to impurity removal; and the ore pulp with impurities removed enters a swash-plate grader to be graded, settled sand of the grader is discharged from an underflow discharging port of the swash-plate grader, and overflowing materials of the grader are discharged from an overflowing discharging opening of the swash-plate grader and enter tailings. By means of the grading system and process, the objective mineral recovery rate can be increased, and economic benefits are improved.

Description

technical field [0001] The invention relates to a beneficiation system, in particular to an inclined plate overflow pulp classification system; the invention also relates to a pulp classification process, which belongs to the technical field of pulp treatment. Background technique [0002] At present, the world's resources are increasingly depleted, and the utilization rate of resources is generally not high. In order to improve the recovery rate of minerals and avoid waste of resources. Mineral dressing mostly adopts the principles of "early harvesting and early throwing", combined with coarse and subdivided sorting methods to improve efficiency and reduce costs. But at present, rich ore resources are depleting day by day, and poor, miscellaneous, and fine-grained disseminated ores are increasing year by year. Therefore, fine grinding ore to achieve monomer dissociation must become a common measure to improve mineral processing indicators. When the minerals reach the fine ...

AI Technical Summary

Problems solved by technology

[0004] Fine-grained minerals are directly discarded into the tailings, reducing the recovery rate of the target minerals, causing waste of resources, and indirectly increasing the cost of beneficiation

If it is directly sorted, the feed concentration may not meet the process requirements, and due to the influence of some ultra-fine-grained minerals, the load on the equipment in the next section will be increased, the recovery rate of the target minerals is low, and the cost of sorting is high, which cannot meet the economic requirements.

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