A technology and equipment for increasing coal lump rate

Abstract

The invention relates to a process and equipment for coal mine production, in particular to a process and equipment for increasing block coal rate. The technical problem of reduced block coal rate resulted from the disadvantages of fully mechanized coal mining equipment, in particular the process matched design of a crusher and an elevating conveyor, in the coal mine underground mining process is solved. The process is characterized by comprising the following steps: a coal block and slack coal mixture body obtained by cutting through a coal mining machine is sorted through a screening device; the block coal not less than 200 mm is sorted and delivered out of the rear section of the screening device and is conveyed away by bypassing the crusher; large block coal to be crushed is fed to the crusher to be crushed and then is conveyed to a main conveying belt through the elevating conveyor; the sorted mixed coal less than 200 mm is conveyed to the outlet of the crusher through a sorting conveying section by bypassing the crusher, fed to the front section of the elevating conveyor, delivered to the main conveying belt, and then conveyed to a place aboveground; and the whole process of sorting, crushing and conveying is completed. The block rate of the coal with the diameter of 13-200 mm is comprehensively increased by 5-6%.

Description

technical field [0001] The invention relates to a coal mine production process and device, in particular to a process and equipment for increasing the coal lump rate. Background technique [0002] In recent years, the production of most large coal mines in my country has entered the period of mechanized coal mining, especially the extensive use of fully mechanized mining equipment, and the coal output has risen sharply, making a huge contribution to my country's energy demand and economic development. Mine comprehensive coal mining equipment is mainly used in the coal production process, such as coal breaking, which is mainly realized by the drum shearer, coal is loaded, and the coal is pushed into the slide (scraper conveyor) by the scraper conveyor, and the coal is transported to the reloader The tail of the machine is unloaded, and then the bulk coal is crushed by the crusher, and then the coal is transferred to the belt conveyor by the transfer machine, and finally trans...

AI Technical Summary

Problems solved by technology

The reason is that in the process of crushing large blocks, because the large, medium and small blocks and the fine coal use one running channel, the loss of block rate is serious, and the rate of lump coal decreases from the source. No matter how hard the follow-up links are, the block The coal rate can only be maintained at a certain level, and the economic benefits cannot be effectively brought into play. This link has been ignored for many years

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