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Washability evaluation method in coal dressing process by using sound recognition method

A sound recognition and optional technology, applied in the direction of using sonic/ultrasonic/infrasound to analyze solids, material inspection articles, instruments, etc.

Active Publication Date: 2019-01-11
HENAN POLYTECHNIC UNIV
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  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiencies in the prior art, to provide a selectivity evaluation method in the coal preparation process of voice recognition method, to solve the technical problems of dry separation of lump coal sound recognition, and to provide Provide basis for regulation

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  • Washability evaluation method in coal dressing process by using sound recognition method
  • Washability evaluation method in coal dressing process by using sound recognition method

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with specific embodiments. The exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not as a limitation to the present invention.

[0025] Such as figure 1 As shown, the selectivity assessment method in the coal preparation process of a kind of sound recognition method of the present embodiment comprises the following steps:

[0026] S1. Raw coal sample collection: collect raw coal samples on the underground raw coal belt or the belt under the raw coal bunker, the sampling volume is ≥ 10 tons, the sampling time is ≥ 8 hours, and the number of sub-samples is ≥ 30;

[0027] S2. Raw coal sample analysis: including elemental analysis, industrial analysis, coal ash composition analysis, and physical property analysis of raw coal samples; elemental analysis includes analysis of carbon, hydrogen, oxygen, nitrogen, sulfur, and phosphorus element content...

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Abstract

The invention discloses a washability evaluation method in the coal dressing process by using a sound recognition method. The washability evaluation method is mainly used for sorting lump coal with agranularity of 25 mm-200 mm. The washability evaluation method comprises the following steps that a raw coal sample is taken, the raw coal sample is analyzed, the grain size of the raw coal sample isanalyzed, raw coal sound characteristics are analyzed, and a washability curve of screening-sound characteristics of the coal sample with the size range of 25mm and above is mapped and washability evaluation is performed. Compared with the prior art, the washability evaluation method solves the problem of regulating the product quality of the sound recognition method, and provides an important basis for the sound recognition method for large-scale industrial sorting of coal.

Description

technical field [0001] The invention relates to the technical field of coal separation technology, in particular to an selectivity evaluation method in the process of coal separation by voice recognition method. Background technique [0002] Coal "washing" is currently the most important method of coal preparation, but as the country's coal resource development center shifts to the west and north inland, the disadvantages of the "coal washing" method are further highlighted. Mainly reflected in: firstly, a large amount of coal slime water produced in the coal washing process needs to be recycled, the process is complicated, and the workload is heavy; secondly, the west and north of my country are short of water and the ecology is fragile. The "coal washing" method greatly limits the development of coal utilization . In recent years, some new sorting methods have been widely developed, especially the dry sorting without water has attracted the attention of the industry, and t...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/22G01N15/02G01N29/04
CPCG01N15/02G01N29/04G01N33/222
Inventor 邓小伟程敢史长亮张传祥叶广课王勋龙
Owner HENAN POLYTECHNIC UNIV
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