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Multistage combined type dry method coal dressing system and method

A combined dry method and coal preparation technology, which is applied in chemical instruments and methods, wet separation, solid separation, etc., can solve the problems of incapable of large-scale production of product rate, low efficiency of dry separation technology, high moisture content, etc. Achieve the effects of sorting accuracy, improving sorting efficiency and output, and reducing moisture content

Inactive Publication Date: 2014-11-12
SHAANXI GELIEFULAI ENTERPRISE DEV CO LTD
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Problems solved by technology

[0007] The first purpose of the present invention is to overcome the defects of low separation accuracy, low output (cannot be produced in large scale) and low product rate in the existing dry coal preparation technology
[0008] The second purpose is to overcome the problem of inefficiency or even failure of the entire dry separation technology due to the high moisture content in the material to be separated, that is, raw coal, which needs to be dried
[0009] The third purpose is to overcome the shortcomings of the existing dry separation technology for the lower limit of fine dust separation

Method used

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  • Multistage combined type dry method coal dressing system and method
  • Multistage combined type dry method coal dressing system and method
  • Multistage combined type dry method coal dressing system and method

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Embodiment Construction

[0054] In order to overcome the disadvantages of low separation accuracy, low output (not large-scale production) and low product rate in the existing dry coal preparation technology, this embodiment provides a figure 1 The shown multi-stage composite dry coal separation system includes a frame, a composite dry horizontal sorter suspended on the frame 2, and a feed for the composite dry horizontal sorter 2 Coal scuttle 1, cyclone dust removal blast circulator 4, bag dust removal residual air drain 5, clean coal conveyor 6, fine ash waste transfer screw 7, gangue conveyor 8, separation main fan 10, dust collection system induced draft fan 11; through the vertical sorting bed feed hoist 9 is connected to the composite dry vertical sorter 3 under the medium coal discharge port of the composite dry horizontal sorter 2, wool stockyard (scaffolding), raw coal Crushing drying conveyor line, material storage yard to be selected, etc.

[0055] It is not difficult to see from the figure th...

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Abstract

The invention provides a multistage combined type dry method coal dressing system and method. In a traditional combined type dry method coal dressing system combined type dry method vertical sorting machine, a vertical sorting bed material feeding elevator connected to be below the middings discharging hole of a combined type dry method horizontal sorting machine is connected with the combined type dry method horizontal sorting machine to realize the vertical sorting of the middings from the combined type dry method horizontal sorting machine; the combined type dry method horizontal sorting machine and the combined type dry method vertical sorting machine are combined to realize multistage sorting so as to improve a coal dressing precision and a production rate and simultaneously improve a coal dressing yield; a horizontal air flue is arranged on a horizontal sorting bed, so that a sorting lower limit is eliminated. According to a heat distribution pipeline, high-temperature smoke generated by a combustion furnace is transported to each piece of sorting equipment in a whole sorting process, the on-line drying of sorted materials and the circular drying of a whole system are formed, all-weather dry method sorting production is guaranteed, and the sorting efficiency and yield are improved.

Description

Technical field [0001] The invention belongs to the technical field of mechanical coal preparation, and specifically relates to a multi-stage composite dry coal preparation system and method. Background technique [0002] As my country's main energy source, the conflict between coal combustion and environmental pollution has attracted more and more attention from governments at all levels and the general public. The implementation of clean coal technology, rational use of coal resources, improvement of coal quality, and reduction of pollution emissions have become the primary issues for the survival and development of coal industry enterprises. In order to improve the quality of burning coal and make full and reasonable utilization, people have developed various raw coal separation equipment (systems) and methods. [0003] Coal washing is one of the applications of clean coal technology. The technology is to separate raw coal into clean coal and gangue through sorting, improve coa...

Claims

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Application Information

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IPC IPC(8): B03B7/00B04C3/00B03B4/02B03B11/00
Inventor 魏大山
Owner SHAANXI GELIEFULAI ENTERPRISE DEV CO LTD
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