A system and method for automatically sorting coal and gangue based on temperature changes

Abstract

The invention relates to the field of automatic separation of coal and gangue, in particular to an automatic coal and gangue separation system and method based on temperature changes. The automatic coal and gangue separation system based on temperature changes comprises a conveying belt, a collection hoper, a feeding device, a queuing device, a detection device, a gas treatment device and a motionexecution device. The feeding device comprises a small suspension-type vibrating screen. The queuing device comprises a lining device, a gathering support and an isolation plate. The detection devicecomprises a thermal infrared temperature sensor, a data acquisition card and a computer. The gas treatment device comprises a gas inflation box, a gas desorption device, a gas collection box, a gas filtering and purification box and a gas pressurizer. According to the automatic coal and gangue separation system and method based on temperature changes, on the basis of the principle that the temperature of coal is increased after the coal absorbs gas and is decreased after the coal desorbs the gas and the temperature of gangue is not changed due to the fact that the gangue does not react with gas, the coal is separated from the gangue, the gangue with the temperature unchanged is separated out and is removed through the motion execution device; and the automatic coal and gangue separation system and method based on temperature changes are high in separation efficiency, capable of separating various types of coal and high in adaptability, and water is not needed.

Description

technical field [0001] The invention relates to the field of automatic separation of coal and gangue, in particular to a system and method for automatic separation of coal and gangue based on temperature changes. Background technique [0002] Coal is known as black gold, the food of industry, and for a long time to come, coal is still one of the indispensable energy sources for our human production and life. The supply of coal is also related to my country's industry and even The development and stability of all aspects of society as a whole. However, the raw coal lifted out of the mine contains a large amount of gangue. As a companion to coal, gangue has the characteristics of low calorific value and low carbon content. A large amount of coal gangue is not only a waste of land resources, but also spontaneous combustion, rain, etc. It will cause serious harm to the environment. [0003] The existing gangue separation equipment mainly includes wet separation and dry separati...

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Problems solved by technology

However, the raw coal lifted out of the mine contains a large amount of gangue. As a companion to coal, gangue has the characteristics of low calorific value and low carbon content. A large amount of coal gangue is not only a waste of land resources, but also spontaneous combustion, rain, etc. It will cause serious harm to the environment

[0003] The existing gangue separation equipment mainly includes wet separation and dry separation. The wet separation has the disadvantages of low efficiency, large pollution, waste of water resources, and low degree of automation. However, the existing dry separation equipment uses γ-ray separation and X-ray sorting will have adverse effects on the human body and cause unpredictable occupational diseases. At the same time, the cost of radiation sources and detection devices is high and difficult to manage

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