Graded desliming system and process for mica

Abstract

The invention relates to a graded desliming system and process for mica. Mica ore pulp enters a first-grade vibration screen to be subjected to first-level screening, and the partition size of the first-grade vibration screen is 0.5 mm; screen underflow, with the size fraction being lower than 0.5 mm, of the first-grade vibration screen enters a mixing tank to be evenly mixed and then is delivered into a 2.0 mm filter through a delivery pump to be subjected to impurity removal; the ore pulp with impurities removed enters a swash plate grader to be subjected to graded desliming, and fine-fraction ore slime with the size fraction being lower than 38 micrometers is discharged into tailings from an overflow discharging port of the swash plate grader; settled sand of the grader is discharged from an underflow discharging port of the swash plate grader and enters a second-grade vibration screen to be screened again, and the partition size of the second-grade vibration screen is 0.3 mm; screen underflow, with the size fraction being lower than 0.3 mm, of the second-grade vibration screen enters the tailings, and oversize products of the second-grade vibration screen enter the next working section. By means of the graded desliming system and process for mica, fine-fraction gangue particles can be effectively thrown away, coarse-fraction mica is effectively reserved, and the recovery rate of mica is increased.

Description

technical field [0001] The invention relates to a beneficiation system, in particular to a mica ore graded desliming system; the invention also relates to a mica ore graded desliming process, which belongs to the technical field of pulp treatment. Background technique [0002] Mica is a rock-forming mineral with the characteristics of insulation, high temperature resistance, luster, stable physical and chemical properties, good heat insulation, elasticity and toughness, and the property of being peeled into elastic transparent sheets. Widely used in building materials industry, fire protection industry, fire extinguishing agent, welding rod, plastic, electrical insulation, paper making, asphalt paper, rubber, pearlescent pigment and other chemical industries. Mica ore is obtained through crushing, screening and grading, shape beneficiation, winnowing, flotation and other beneficiation processes to obtain mica concentrate. When the mica monomer dissociates, granular gangue m...

AI Technical Summary

Problems solved by technology

[0004] In the sieving and grading operation with a grading particle size of 0.3mm, the fine-grained gangue particles are likely to cause the screen to be clogged, resulting in the failure of the sieving and grading operation

Because the mica is mostly in the form of flakes, the current graded desliming equipment cannot meet the process requirements. During the graded desliming, the coarser mica will also be thrown away at the same time, causing a lot of waste

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