CN105750206A - Coal dressing method achieving whole-particle-size sorting - Google Patents

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

A kind of coal preparation method realizing full size sorting

Technical field

The present invention relates to a kind of coal preparation method, especially a kind of coal preparation method realizing full size sorting.

Background technology

China Patent Publication No. CN204194112U, publication date on March 11st, 2015, the name of innovation and creation is called a kind of dry coal dressing machine, that application discloses a kind of dry coal dressing machine and operation principle thereof；China Patent Publication No. CN201431966U, publication date on March 31st, 2010, the name of innovation and creation is called a kind of compound dry coal dressing apparatus, that application discloses a kind of compound dry coal dressing apparatus and operation principle thereof.Existing Duplex dry separator is undesirable to the small grain size separating effect of less than 13 millimeters, it is impossible to discharged by the impurity such as the troilite of the spoil of small grain size and small grain size.

Summary of the invention

For solving an above existing difficult problem, the invention discloses a kind of coal preparation method realizing full size sorting, scheme is achieved in that

Carry out repeatedly sorting to raw coal by the segmentation bed surface of multiple differing heights, different size aperture: first the impurity such as the middle coal in raw coal, spoil, troilite are sorted into secondary bed surface, it is thus achieved that cleaned coal；The impurity such as the spoil of secondary bed surface, troilite are sorted into three bed surfaces, it is thus achieved that middle coal simultaneously；Cleaned coal and middle coal all repeatedly will be sorted to obtain final satisfactory cleaned coal and middle coal by the multistage bed in multiple differing heights different size apertures；Cleaned coal, middle coal, spoil, classification of impurities are discharged the most at last.

Beneficial effect: present invention achieves the full size sorting of dry-dressing machine, effectively by the spoil of all granularities, troilite and impurity sorting are discharged.Achieve discharge refuse, desulfurization, drop ash and improve the purpose of ature of coal.

Detailed description of the invention

A kind of coal preparation method realizing full size sorting, scheme is achieved in that

By the segmentation bed surface of multiple differing heights, different size aperture, raw coal is repeatedly sorted；First the impurity such as the middle coal in raw coal, spoil, troilite are sorted into secondary bed surface, it is thus achieved that cleaned coal；The impurity such as the spoil of secondary bed surface, troilite are sorted into three bed surfaces, it is thus achieved that middle coal simultaneously；Cleaned coal and middle coal all repeatedly will be sorted to obtain final satisfactory cleaned coal and middle coal by the multistage bed in multiple differing heights different size apertures；Cleaned coal, middle coal, spoil, classification of impurities are discharged the most at last.

Above-mentioned detailed description of the invention is only for clearly demonstrating example of the present invention, and is not the restriction to embodiment.For those of ordinary skill in the field; can also make other changes in different forms on the basis of the above description; here without also giving exhaustive to all of embodiment, and the apparent change thus amplified out or variation are still in protection scope of the present invention.

Claims (1)

1. the coal preparation method realizing full size sorting, it is characterised in that scheme is achieved in that

By the segmentation bed surface of multiple differing heights, different size aperture, raw coal is repeatedly sorted；First the impurity such as the middle coal in raw coal, spoil, troilite are sorted into secondary bed surface, it is thus achieved that cleaned coal；The impurity such as the spoil of secondary bed surface, troilite are sorted into three bed surfaces, it is thus achieved that middle coal simultaneously；Cleaned coal and middle coal all repeatedly will be sorted to obtain final satisfactory cleaned coal and middle coal by the multistage bed in multiple differing heights different size apertures；Cleaned coal, middle coal, spoil, classification of impurities are discharged the most at last.