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Environment-friendly coal tar for producing waterless mud-gunstemming and application of environment-friendly coal tar

A technology of water-free gun mud and coal tar, which is applied in the field of refractory material production, can solve the problems of physical harm to workers, and achieve the effects of low price, increased strength, and slow hole expansion speed

Inactive Publication Date: 2019-05-17
河北丰能耐火材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the need to add coal tar in the preparation process of anhydrous taphole clay, and the anhydrous tappet clay prepared by using the current coal tar releases a large amount of benzopyrene when heated, which is a very strong carcinogen. The environment and the health of the staff are extremely harmful, so it is imperative to develop non-toxic and cheap binders in order to improve the performance of anhydrous taphole clay

Method used

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  • Environment-friendly coal tar for producing waterless mud-gunstemming and application of environment-friendly coal tar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～7

[0023] Embodiment 1~7 is used for producing the environmental protection coal tar of anhydrous taphole mud

[0024] Embodiments 1 to 7 are respectively a kind of environmentally friendly coal tar used to produce anhydrous taphole mud, and the active ingredients thereof are specifically shown in Table 1

[0025]

[0026] Mix and stir the above-mentioned ingredients evenly to obtain the environmentally friendly coal tar for producing anhydrous taphole clay as described in any one of Examples 1-7.

Embodiment 8

[0027] Embodiment 8 is used for the application of the environment-friendly coal tar of producing anhydrous taphole mud

[0028] This embodiment provides an application of using any one of the embodiments 1-7 to produce the environmentally friendly coal tar of anhydrous taphole clay. It is used to prepare tar-pitch combined Al2O3-SiO2-SiC-C anhydrous tapped clay system. The production of anhydrous taphole mud is changed to the environmentally friendly coal tar used in the production of anhydrous taphole mud according to any one of Embodiments 1 to 7, and the asphalt ratio can be reduced to 3%. Utilize the anhydrous gun mud that the coal tar in the embodiment 1~7 produces in Liaoning Yingkou Iron and Steel Works 1350m 3 The test on the blast furnace and the 1080m³ blast furnace of Shengbao Steel, the effect is satisfactory, there is no unpleasant smell during the production and use of the gun mud, the concentration of yellow smoke in front of the furnace is reduced from 85% to...

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Abstract

The invention discloses environment-friendly coal tar for producing waterless mud-gunstemming and application of the environment-friendly coal tar. Effective raw materials for preparing the environment-friendly coal tar for producing the waterless mud-gunstemming comprise the following components in parts by weight: 50 to 80 parts of coal tar, 10 to 25 parts of high adsorption active carbon micropowder, 5 to 15 parts of cross-linking agent and 3 to 12 parts of coupling agent. The environment-friendly coal tar for producing the waterless mud-gunstemming, disclosed by the invention, enables theproduced waterless mud-gunstemming to obtain the advantages of better environment friendliness, better mechanical strength, short splash time, low reaming speed and long tapping time.

Description

technical field [0001] The invention belongs to the field of refractory material production, and relates to a formula of unshaped refractory material, in particular to an environment-friendly coal tar for producing anhydrous taphole mud and its application. Background technique [0002] Anhydrous taphole clay is a very critical refractory material in the ironmaking process. With the rapid development of my country's iron and steel industry, blast furnaces continue to develop in the direction of longevity and intensified smelting, and the requirements for the performance of taphole anhydrous taphole mud are getting higher and higher, and it is required to have multiple good operability (that is, filling performance) , opening), air permeability, sintering, combination of old and new clay, corrosion resistance, erosion resistance and environmental protection, etc., especially requiring short splashing time, slow hole expansion speed and long tapping time in the tapping process ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/634C04B35/66C04B35/565C04B35/14C04B35/10
Inventor 刘连军刘克维
Owner 河北丰能耐火材料股份有限公司
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