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Determination method for expansion degree of dry briquette

A measurement method and technology of expansion degree, which is applied in the field of coking coal, can solve problems such as the size of briquettes is too large and the inability to measure the expansion degree of Oya

Inactive Publication Date: 2017-12-15
武汉钢铁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the above-mentioned technical problems, the present invention discloses a method for measuring the swelling degree of dry briquettes. The expansion degree of dry briquette was measured by using the existing colloidal layer measuring instrument and measuring method

Method used

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  • Determination method for expansion degree of dry briquette

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Embodiment 1

[0028] This embodiment discloses a method for measuring the swelling degree of dry briquettes, comprising the following steps:

[0029] 1) Get 50g dry coal powder and 50g crushed briquette and mix evenly, wherein, the average particle size of dry coal powder is controlled at about 0.4mm, and the particle size of briquette is controlled at about 10mm, and the briquette after described dry coal powder and crushing The coal is fat coal; put it into the coal cup;

[0030] 2) Put the coal cup in the brick coal hole of the electric furnace, install the colloid body volume curve recording paper on the drum, and display the colloid body volume curve on the computer terminal in real time through the computer, and start the electric furnace to start heating;

[0031] 3) Referring to GB / T479-2000 Determination Method of Bituminous Coal Colloidal Layer Index, draw the colloidal body volume curve, and measure the maximum thickness Y value and shrinkage X value of the colloidal layer of dry...

Embodiment 2

[0035] This embodiment discloses a method for measuring the swelling degree of dry briquettes, comprising the following steps:

[0036] 1) Get 40g of dry coal powder and 60g of crushed briquettes and mix evenly, wherein, the average particle size of dry coal powder is controlled at about 0.35mm, and the particle size of briquette is controlled at about 10mm. All the coals are gas-rich coal; put them into the coal cup;

[0037] 2) Put the coal cup in the brick coal hole of the electric furnace, install the colloid body volume curve recording paper on the drum, and display the colloid body volume curve on the computer terminal in real time through the computer, and start the electric furnace to start heating;

[0038] 3) Referring to GB / T479-2000 Determination Method of Bituminous Coal Colloidal Layer Index, draw the colloidal body volume curve, and measure the maximum thickness Y value and shrinkage X value of the colloidal layer of dry briquettes, and wait for the temperature ...

Embodiment 3

[0042] This embodiment discloses a method for measuring the swelling degree of dry briquettes, comprising the following steps:

[0043] 1) Mix 60g of dry coal powder with 40g of crushed briquettes evenly, wherein the average particle size of dry coal powder is controlled at about 0.32mm, and the particle size of briquette is controlled at about 5mm. The coal is gas coal; put it into the coal cup;

[0044] 2) Put the coal cup in the brick coal hole of the electric furnace, install the colloid body volume curve recording paper on the drum, and display the colloid body volume curve on the computer terminal in real time through the computer, and start the electric furnace to start heating;

[0045] 3) Referring to GB / T479-2000 Determination Method of Bituminous Coal Colloidal Layer Index, draw the colloidal body volume curve, and measure the maximum thickness Y value and shrinkage X value of the colloidal layer of dry briquettes, and wait for the temperature of the electric furnac...

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Abstract

The invention discloses a determination method for expansion degree of a dry briquette, belonging to the technical field of coking coal. The determination method comprises the following steps: (1) uniformly mixing dry coal powder and a crushed briquette, and putting the mixture into a coal cup; (2) placing the coal cup into a brick pile coal hole of an electric furnace, arranging colloid body volume curve recording paper on a rotary cylinder, and starting the electric furnace to begin warming; (3) drawing a colloid body volume curve, determining the maximum thickness Y value and the shrinkage degree X value of a colloid layer of the dry briquette, and ending the experiment until the electric furnace is heated from room temperature to 730 DEG C; and (4) according to the colloid body volume curve drawn in step (3), measuring the maximum expansion height h of the colloid layer of the dry briquette. The determination method disclosed by the invention overcomes the problem in the prior art that determination for dilatation of coal cannot be performed due to relatively large size of the briquette, and lays a foundation for subsequent research.

Description

technical field [0001] The invention relates to a method for measuring the expansion degree of coking coal, belonging to the technical field of coking coal, in particular to a method for measuring the expansion degree of dry molded coal. Background technique [0002] The increasing depletion of coking coal resources makes it urgent to expand coking coal resources and mix more weakly caking coal. In order to achieve the purpose of reducing ironmaking costs and stabilizing coke quality, starting from coking technology, relying on out-of-furnace technology to improve coke quality and reduce Coal blending cost and pollution reduction have become one of the main directions. In recent years, a lot of related research work has been carried out at home and abroad, and coking coal pretreatment technologies such as coal blending coking, coal drying, and coal humidity adjustment have been developed. Among them, coking coal drying pretreatment The treatment technology significantly redu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/16
CPCG01N25/16
Inventor 王元生詹立志薛改凤常红兵张雪红鲍俊芳郑俊平强农厂宋子逵任玉明陈细涛鲁婷陈鹏项茹
Owner 武汉钢铁有限公司
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