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Method for enriching semi-vitrinite components of coal

An enrichment and vitrinite technology, which is applied in the preparation and sampling of analytical materials, samples for testing, etc., can solve the problem of inappropriate enrichment of semi-vitrein components, and can reduce the probability of oxidation, reduce the probability of contact, and increase enrichment. The effect of set rate

Active Publication Date: 2021-01-29
SINOSTEEL ANSHAN RES INST OF THERMO ENERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, the enrichment of coal rock microcomponents has been studied at home and abroad, most of which are used to enrich vitrinite and inertinite. The Chinese patent application number 201310530583.4 discloses a coal microcomponent The enrichment method, which includes crushing separation steps and enrichment steps, adopts multi-stage cyclone separation technology, and obtains vitrinite-enriched coal and inertinite-enriched coal with a purity of more than 90%, but the method Not suitable for enrichment of vitrinite components

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  • Method for enriching semi-vitrinite components of coal

Examples

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Comparison scheme
Effect test

Embodiment 1

[0020] The enrichment of vitrinite components in Shanxi coal is carried out according to the following steps:

[0021] (1) Crush the raw coal to below 0.2mm;

[0022] (2) Put the coal sample, medium ball, and distilled water processed in step (1) into a ball mill tank at a mass ratio of 1:10:4, then place it in a ball mill, and ball mill it at a speed of 80r / min for 10min. Take out the ball mill tank, wait for the mixture in the ball mill tank to cool down to 20-40°C, take out the medium ball, rinse the coal sample on the medium ball with distilled water, and ensure that the washed coal sample falls completely into the ball mill tank; The mixture with water is sieved with a 200-mesh round-hole sieve, and the remaining small amount of sieve is placed in a mortar and ground until it completely passes through the 200-mesh round-hole sieve, and the mixture of the coal sample and water under the sieve is collected into a beaker;

[0023] (3) Place the beaker containing the mixture...

Embodiment 2

[0026] The enrichment of vitrinite components in Shanxi coal is carried out according to the following steps:

[0027] (1) Crush the raw coal to below 0.2mm;

[0028] (2) Put the coal sample, medium ball, and distilled water processed in step (1) into a ball mill tank at a mass ratio of 1:15:4, then place it in a ball mill, and ball mill it at a speed of 100r / min for 10 minutes. Take out the ball mill tank, wait for the mixture in the ball mill tank to cool down to 20-40°C, take out the medium ball, rinse the coal sample on the medium ball with distilled water, and ensure that the washed coal sample falls completely into the ball mill tank; The mixture with water is sieved with a 200-mesh round-hole sieve, and the remaining small amount of sieve is placed in a mortar and ground until it completely passes through the 200-mesh round-hole sieve, and the mixture of the coal sample and water under the sieve is collected into a beaker;

[0029] (3) Place the beaker containing the m...

Embodiment 3

[0032] The enrichment of vitrinite components in Shanxi coal is carried out according to the following steps:

[0033] (1) Crush the raw coal to below 0.2mm;

[0034] (2) Put the coal sample treated in step (1) into the ball mill tank with the medium ball and distilled water at a mass ratio of 1:15:6, then place it in the ball mill, and grind it for 20 minutes at a speed of 150r / min. Take out the ball mill tank, wait for the mixture in the ball mill tank to cool down to 20-40°C, take out the medium ball, rinse the coal sample on the medium ball with distilled water, and ensure that the washed coal sample falls completely into the ball mill tank; The mixture with water is sieved with a 200-mesh round-hole sieve, and the remaining small amount of sieve is placed in a mortar and ground until it completely passes through the 200-mesh round-hole sieve, and the mixture of the coal sample and water under the sieve is collected into a beaker;

[0035](3) Place the beaker containing t...

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Abstract

The invention discloses a method for enriching semi-vitrinite components of coal. The method comprises the following steps: (1) crushing raw coal to be less than 0.2 mm; (2) putting a crushed coal sample, a medium ball and distilled water into a ball milling tank for ball milling; (3) carrying out wet sieving on the ground coal sample, and then carrying out ultrasonic treatment, suction filtrationand drying; and (4) enriching semi-vitrinite components by using a heavy liquid separation method. According to the method, wet grinding and ultrasonic treatment technologies are adopted in a feed coal crushing treatment stage so that the hydrophilic and hydrophobic characteristics of microcomponents are changed to a certain extent, different microcomponents and mineral substances of coal are dissociated, and the semi-vitrinite component enriched coal is prepared.

Description

technical field [0001] The invention belongs to the technical field of coal processing, in particular to a method for enriching semi-vitrinite components of coal. Background technique [0002] The microcomponents and contents of coal rocks have a very important influence on the physical and chemical properties of coal. In the 1960s, foreign literature discovered for the first time that coal contains a type of microscopic component that has characteristics different from other components. Between the vitrinites is a special transition component with weak cohesion, which was once named pseudovitrinite. At the same time, after research, it was found that pseudovitrinite has 1 / 3 activity and 2 / 3 inertness. [0003] In industrial applications such as coking coal blending, liquefaction, and gasification, the semi-vitrinite component of coal has a very important influence on its process. It is more effective and reasonable to treat the semi-vitrinite component differently from oth...

Claims

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Application Information

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IPC IPC(8): G01N1/40G01N1/38G01N1/28
CPCG01N1/4077G01N1/40G01N1/286G01N1/38G01N2001/4088G01N2001/4094G01N2001/2866Y02P10/20
Inventor 徐秀丽胥玉玲边春杨姜雨马岩吴成林吴雷
Owner SINOSTEEL ANSHAN RES INST OF THERMO ENERGY CO LTD
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