A kind of coarse coal slime separation equipment and its process

Abstract

The invention relate to a sorting technology of coarse coal slime of a coal plant, in particular to coarse coal slime sorting equipment and a technology of the coarse coal slime sorting equipment. The coarse coal slime sorting equipment is characterized by comprising a TBS coal slime sorting machine which comprises a tank body, a feeding well, a turbulent flow plate, a density sensor, an actuator, a discharging valve and an overflow weir. Therefore, the coarse coal slime sorting equipment and the technology are reasonable in design and easy to achieve.

Description

(1) Technical field [0001] The invention relates to a coarse coal slime separation process in a coal preparation plant, in particular to a coarse coal slime separation device and a process thereof. (2) Background technology [0002] Coal is the main energy source in my country, and currently accounts for about 70% of primary energy in my country's energy structure. Coal's dominant position in my country's energy structure will not change for a long time to come. With the improvement of coal mining mechanization and automation, the content of coal slime in my country's coal is increasing, especially the 1-0.25mm particle size coarse particle separation technology has become a new challenge for the coal preparation industry. [0003] The main characteristics of coarse-grained coal slime are large content and poor selectivity. Conventional coarse coal slime separation process includes TBS separation, spiral separator separation, coal slime dense medium separation, etc. Among ...

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Problems solved by technology

[0004] 1) The curved sieve is easy to block the sieve holes, which in turn leads to low feed concentration of the centrifuge, causing the centrifuge to run out of water

[0005] 2) The curved sieve cannot effectively remove the high-ash fine-grained coal slime in the TBS overflow clean coal, which pollutes the TBS coarse clean coal, resulting in high ash content in the clean coal, which cannot meet user requirements

[0006] 3) TBS uses the overflow water of the thickener as circulating water, and the overflow water of the thickener contains high-ash and fine-grained coal slime, which further pollutes the clean coal of TBS

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