Process and equipment for increasing block coal rate

Abstract

The invention relates to a coal mine production process and equipment, in particular to a process and equipment for increasing the coal lump rate. It solves the technical problem that the lump coal rate is reduced due to the insufficient design of fully mechanized mining equipment in the underground mining process of the coal mine, especially the process cooperation design of the crusher and the loader. The characteristic of the procedure is that the coal lumps and coal mixtures obtained from coal cutting by the coal shearer are sorted through the screening device, and the lump coals not less than 200 mm are sorted out, and the rear section is bypassed by the crusher to be transported away, and then the large lumps of coal to be crushed are transported away. Enter the crusher for crushing processing, and then transport it to the main conveyor belt through the transfer machine, and the sorted mixed coal less than 200mm will bypass the crusher through the sorting transportation section, and then transfer to the crusher outlet and enter the front section of the transfer machine to the main conveyor belt. It is transported to the well on the transport belt, and completes the whole process of sorting, crushing, and transport, which can comprehensively increase the block rate with a diameter of (13-200mm) by 5-6 percentage points.

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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