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Coal dressing method achieving whole-particle-size sorting

A sorting and particle size technology, applied in chemical instruments and methods, classification, solid separation, etc., can solve the problems of unsatisfactory small particle size sorting effect and impurity discharge, etc., and achieve the effect of reducing ash coal quality and improving coal quality.

Inactive Publication Date: 2016-07-13
杨志辉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing compound dry sorting machine is unsatisfactory for the small particle size below 13 mm, and cannot discharge impurities such as small particle size gangue and small particle size pyrite

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0006] A coal preparation method to achieve full particle size separation, the scheme is realized as follows:

[0007] Raw coal is sorted multiple times through multiple segmented beds of different heights and different sizes of apertures; firstly, impurities such as medium coal, gangue, and pyrite in the raw coal are sorted to the secondary bed surface to obtain clean coal; at the same time Sorting the gangue, pyrite and other impurities on the secondary bed surface to the tertiary bed surface to obtain middling coal; clean coal and middling coal will be sorted multiple times by multiple multi-stage beds of different heights and pore sizes to obtain the final conformity The required clean coal and medium coal; finally clean coal, medium coal, gangue and impurities are classified and discharged.

[0008] The specific implementations above are merely examples for clearly illustrating the present invention, rather than limiting the implementations. For those of ordinary skill i...

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Abstract

The invention discloses a coal dressing method achieving whole-particle-size sorting. According to the scheme, sorting is performed on raw coal many times through a plurality of different-height and different-hole-diameter segmented bed surfaces; medium coal, gangue, ferrous disulfide and other impurities in the raw coal are sorted into a secondary bed surface, and clean coal is acquired; meanwhile, gangue, ferrous disulfide and other impurities of the secondary bed surface are sorted to a ternary bed surface, and medium coal is obtained; the clean coal and the medium coal are subjected to multiple times of sorting of a plurality of segments of different-height and different-hole-diameter bed surfaces so that the clean coal and the medium coal meeting the requirements can be acquired; finally, the clean coal, the medium coal, gangue and impurities are discharged in a classified mode. Whole-particle-size sorting of a dry coal-dressing machine is achieved, and gangue, ferrous disulfide and impurities in all particle sizes are effectively sorted and discharged. The gangue discharging, desulphurization, ash falling and coal quality improving purposes are achieved.

Description

technical field [0001] The invention relates to a coal preparation method, in particular to a coal preparation method for realizing full particle size separation. Background technique [0002] Chinese Patent Publication No. CN204194112U, published on March 11, 2015, the name of the invention is a dry coal separator, the application discloses a dry coal separator and its working principle; Chinese Patent Publication No. CN201431966U, The publication date was March 31, 2010. The name of the invention was a compound dry coal preparation device, and the application disclosed a compound dry coal preparation device and its working principle. The existing compound dry sorting machine is unsatisfactory for the separation of small particle sizes below 13 mm, and cannot discharge impurities such as small particle size gangue and small particle size pyrite. Contents of the invention [0003] In order to solve the above existing problems, the present invention discloses a coal prepar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B07B15/00B07B13/00
CPCB07B15/00B07B13/00
Inventor 杨志辉
Owner 杨志辉
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