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A thermal coal full-size dry process for quality improvement and gangue removal

A full-size, dry technology, applied in chemical instruments and methods, solid separation, separating solids from solids with airflow, etc., can solve problems such as the inability to sort coal at full-size, and achieve wide practicability, Guaranteed sorting accuracy and low energy consumption

Active Publication Date: 2021-11-26
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the dry coal preparation currently has shortcomings, and it is impossible to separate the full-size coal

Method used

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  • A thermal coal full-size dry process for quality improvement and gangue removal
  • A thermal coal full-size dry process for quality improvement and gangue removal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as figure 1 As shown, the process of this embodiment is suitable for coal with low raw coal moisture (less than 6%). Raw coal preparation: the incoming coal from the mine or coal storage yard is first classified through a 50mm grading sieve, and the +50mm raw coal on the sieve is sent to the X-ray intelligent sorting system for sorting through the conveyor belt to obtain large gangue and clean coal; -50mm raw coal enters The hole diameter is 13mm grading sieve for classification, and the +13mm raw coal on the sieve enters the dry separation of the modular dry heavy medium fluidized bed dry separation machine to obtain clean coal and tailing coal; the -13mm raw coal enters the fine-grained dry separation The machine is used for separation to obtain clean coal and tailing coal. In this embodiment, the fine-grained dry separation machine is a vibration module type dry heavy medium fluidized bed dry separation machine.

Embodiment 2

[0028] Such as figure 2 As shown, the process of this embodiment is suitable for coal with raw coal moisture higher than 6%. Raw coal preparation: the incoming coal from the mine or coal storage yard is first classified through a 50mm grading sieve, and the +50mm raw coal on the sieve is sent to the X-ray intelligent sorting system for sorting through the conveyor belt to obtain large gangue and clean coal; -50mm raw coal enters The hole diameter is 13mm grading sieve, and the +13mm raw coal on the sieve enters the modular dry heavy medium fluidized bed dry separator or the composite dry separator for dry separation to obtain clean coal and tailing coal; -13mm The raw coal enters the composite dry separator for separation to obtain clean coal and tailing coal. In this embodiment, the fine-grained dry separator selects the composite dry separator.

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Abstract

The invention discloses a thermal coal full-grain dry-method quality-improving and gangue-discharging process. The method adopts the all-dry process. The process is mainly divided into three parts, X-ray intelligent sorting, coarse-grained coal dry sorting, and fine-grained coal dry sorting. The raw coal to be selected is divided into three particle grades after screening, and the three particle grades of +50mm, 13-50mm, and ‑13mm are screened into the X-ray intelligent sorting machine and the modular dry method heavy medium fluidized bed dry method respectively. Separator and fine-grained dry-process separator to obtain clean coal and tailing coal. The invention has the advantages of simple technological process, high sorting efficiency, low energy consumption, no need of water, low production cost and good economic benefits.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and in particular relates to a thermal coal full-size dry process for quality improvement and gangue removal, which is especially suitable for thermal coal dry separation and solves the problem of water shortage in western regions. Background technique [0002] Dry coal separation technology is suitable for coal separation in arid and water-deficient areas. At present, dry separation equipment mainly includes air jigging separator, compound dry separation machine and modular dry dense medium fluidized bed dry method. Sorting machine. However, dry coal preparation currently has shortcomings, and it is impossible to separate full-size coal. At present, the establishment of a full-size coal separation process is a key issue faced by dry coal preparation. Contents of the invention [0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present inv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B07B9/00B03B9/00
CPCB03B9/005B07B9/00
Inventor 赵跃民张博周恩会段晨龙董良闫光辉江海深陈增强朱广庆
Owner CHINA UNIV OF MINING & TECH
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