Silica brick for coke oven

A technology of silica bricks and coke ovens, which is applied in the field of silica bricks for 5.5m coke ovens, can solve the problems of short service life of coke ovens, and achieve the effect of improving service life

Inactive Publication Date: 2012-07-11
山西盂县西小坪耐火材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of short service life of the coke oven caused by the substandard quality of the existing coke oven silica bricks, and to provide a 5.5m coke oven silica brick

Method used

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  • Silica brick for coke oven

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Raw materials: 200kg of coarse silica powder, 330kg of medium silica powder, 80kg of fine silica powder, 80kg of residual silica bricks as clinker powder,

[0019] Coarse silica powder is composed of three parts, among which silica with a particle size ranging from 3 to 1 mm accounts for 64%, silica between 1 and 0.088 mm accounts for 24%, and silica less than 0.088 mm accounts for 1%; silica medium powder consists of three parts , wherein 1% of silica with a particle size range of 3 to 1mm, 64% of silica with a particle size range of 1 to 0.088mm, and 24% of silica with a particle size range of less than 0.088mm; silica fine powder is composed of two parts, of which the particle size range is 1 Silica between ~0.088mm is 5%, silica less than 0.088mm is 85%, silica fine powder is composed of 50% silica coarse powder and 50% residual silica brick; residual silica brick is composed of three parts, of which the particle size ranges from 3 to 1% silica between 1mm, 58% sili...

Embodiment 2

[0023] Raw materials: 250kg of coarse silica powder, 380kg of medium silica powder, 130kg of fine silica powder, 120kg of residual silica brick as clinker powder,

[0024] Coarse silica powder is composed of three parts, among which silica with a particle size ranging from 3 to 1mm accounts for 74%, silica between 1 and 0.088mm accounts for 34%, and silica smaller than 0.088mm accounts for 2%. Silica medium powder is composed of three parts , of which 2% of silica with a particle size range of 3 to 1mm, 74% of silica with a particle size range of 1 to 0.088mm, and 34% of silica with a particle size range of less than 0.088mm; silica fine powder is composed of two parts, of which the particle size range is 1 Silica between ~0.088mm is 15%, silica less than 0.088mm is 95%, silica fine powder is composed of 50% silica coarse powder and 50% residual silica brick; residual silica brick is composed of three parts, of which the particle size ranges from 3 to 2% silica between 1mm, 68...

Embodiment 3

[0028] Raw materials: 220kg of coarse silica powder, 350kg of medium silica powder, 100kg of fine silica powder, 110kg of residual silica brick as clinker powder,

[0029] Coarse silica powder is composed of three parts, among which silica with a particle size ranging from 3 to 1 mm accounts for 70%, silica between 1 and 0.088 mm accounts for 30%, and silica smaller than 0.088 mm accounts for 1.5%; silica medium powder is composed of three parts , of which 1.8% of silica with a particle size range of 3 to 1mm, 65% of silica with a particle size range of 1 to 0.088mm, and 32% of silica with a particle size range of less than 0.088mm; silica fine powder is composed of two parts, of which the particle size range is 1 Silica between ~0.088mm is 10%, silica less than 0.088mm is 90%, silica fine powder is composed of 50% silica coarse powder and 50% residual silica brick; residual silica brick is composed of three parts, of which the particle size ranges from 3 to 1.2% of silica bet...

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Abstract

The invention relates to a refractory material, in particular to a silica brick for a coke oven of 5.5 m. The silica brick comprises a raw material and an auxiliary material, wherein the raw material comprises the following components in part by weight: 200-250 parts of silica coarse powder, 330-380 parts of silica medium powder, 80-130 parts of silica fine powder and 80-120 parts of residual silica bricks as clinker powder; the auxiliary material comprises a mineralizing agent, lime milk and paper pulp which respectively occupy 1.2 percent, 8 percent and 1 percent of the total weight of the raw material; and the mineralizing agent is formed by mixing manganese powder of which the content of MnO2 is more than or equal to 25 percent and iron phosphate powder of which the content of FeO is more than or equal to 65 percent according to the proportion of 1:1. The preparation of the silica brick comprises the following steps: adding the silica coarse powder, the silica medium powder, the fine power and the residual silica bricks in a wet mill; adding the mineralizing agent for dry mixing for 4-5 minutes; adding the lime milk and compacting for 10-15 minutes; adding the paper pulp, mixing till pug is uniform, compacting and forming into a blank. The silica brick is improved from the aspects of raw material selection, raw material particle grain fineness, dimension distribution and the like, and the various physical and chemical indexes of the silica brick are superior to the national standard, so that the service life of the coke oven can be remarkably improved.

Description

technical field [0001] The invention relates to a refractory material, in particular to a silica brick for a 5.5m coke oven. Background technique [0002] The "Access Conditions for the Coking Industry (2008 Edition)" that came into effect on January 1, 2009 stipulates that the height of the carbonization chamber of a newly built tamping coke oven must be ≥ 5.5m. In order to adapt to the large-scale coke oven, ensure coking production, and extend the The service life and the quality of refractory materials for coking ovens put forward higher requirements. However, due to the differences in the quality and selection of refractory raw materials, the fineness of raw material particles, and the unreasonable size distribution of silica bricks for coke ovens, the physical and chemical standards of silica bricks for 5.5m coke ovens cannot meet the national standards, which seriously affects the quality of coke ovens. service life of the furnace. Contents of the invention [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 郝良军
Owner 山西盂县西小坪耐火材料有限公司
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