A high-voltage electric pulse pretreatment method for strengthening galena crushing and sorting

Abstract

A high-voltage electric pulse pretreatment method for strengthening the crushing and sorting of galena, using a high-voltage electric pulse device, the method is carried out according to the following steps: (1) start the water pump, so that the water continuously enters the pulsating insulating cylinder, and the water is discharged from the product The water outlet of the collector is discharged; (2) The galena ore is conveyed to the pulse insulation cylinder through the feeding bin; it is piled up on the screen, and the top is in contact with the high-voltage electrode; (3) Turn on the power supply, and the high-voltage electrode and the high-voltage negative electrode Discharge occurs to break the galena ore; (4) through the rotation of the eccentric wheel, the pulsating cone moves up and down periodically; the small particles of the galena ore on the screen gradually move downward; (5) the crushed square Lead ore enters the product collector. The method of the invention can increase the useful mineral content of the crushed product, increase the dissociation degree of the monomer of the crushed product, and is beneficial to the reduction of energy consumption in the subsequent treatment process and saves the cost of the enterprise.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and in particular relates to a high-voltage electric pulse pretreatment method for strengthening the crushing and sorting of galena. Background technique [0002] China's refined lead production and consumption both rank first in the world, and lead is mainly used in lead-acid batteries, alloys, building materials, and pigments. In 2017, the proven reserves of domestic lead resources were 89.67 million tons, China's lead production was 4.7164 million tons, and China's lead consumption was 4.8165 million tons. Due to the association of lead and zinc, the supply pattern of lead mines in 2017 was similar to that of zinc mines, showing a tight situation. The situation; China's concentrate gap in 2017 was about 100,000 tons, which was expanding compared with 2016. The global gap was about 25,000 tons, and the supply of lead ore was still tight; it can be seen that there is a potential seriou...

AI Technical Summary

Problems solved by technology

[0003] my country's lead resources are characterized by relatively large reserves, the main occurrence minerals are galena (PbS) and lead oxide minerals, mainly galena; there are few single rich ores of lead and zinc, and there are many low-grade ores and paragenetic ores. Its characteristic is that the embedded particle size is relatively fine. Therefore, the beneficiation of lead ore in my country faces many problems such as complex symbiotic relationship, difficult lead separation, multiple technological processes, and high beneficiation costs; among them, the most important problems in the field of ore crushing are: crushing and grinding Mining equipment investment and maintenance costs are high, energy consumption is high, too many fine-grained grades that cannot be processed and insufficiently dissociated coarse-grained grades are produced, which increases the difficulty of subsequent sorting operations

[0004] Traditional ore crushing and grinding mainly rely on mechanical energy impact, shearing and grinding to break and erode the ore to achieve the purpose of dissociation of mineral monomers. The crushing mechanism determines that most ores are mainly transgranular crushing, making useful minerals and gangues Minerals cannot be effectively separated

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