Anhydrous stemming and preparation method thereof

A technology of anhydrous taphole clay and white clay, which is applied in the field of refractory material preparation, can solve the problems of taphole clay not being able to be tapped normally, use, and cumbersome procedures, and achieve high strength, stable volume, good plasticity and cohesiveness Effect

Inactive Publication Date: 2015-03-25
HUNAN XIANGGANG RUITAI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method does not need to shut down the wind and stop production, but this kind of repaired blasting clay cannot be used as a normal blasting clay for daily iron tapping, and the process is more cumbersome

Method used

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  • Anhydrous stemming and preparation method thereof

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preparation example Construction

[0051] The present invention also provides a method for preparing anhydrous gun mud, which includes the following steps:

[0052] A) In terms of mass fraction, mix 2 to 5% of sodium bentonite and 8 to 15% of additives to obtain a premix;

[0053] B) In terms of mass fraction, mix 15-40% aluminum-containing aggregate, 3-10% coke, 10-30% silicon carbide, 5-10% pyrophyllite, and 10-20% ferrosilicon nitride , 5-10% aluminum-containing fine powder, 5-10% white mud and 2-6% high-temperature asphalt are mixed with the premix obtained in step A) to obtain a mixture;

[0054] C) In terms of mass fraction, mix 5-15% of tar with the mixture obtained in step B) to obtain anhydrous gun mud;

[0055] The particle size of the aluminum-containing aggregate>0.088mm and ≤3mm;

[0056] The particle size of the aluminum-containing fine powder is> 0 mm and ≤ 0.088 mm;

[0057] The softening point of the high-temperature asphalt is preferably 105-150°C.

[0058] In terms of mass fraction, the present inventio...

Embodiment 1

[0072] Premix 2.6% graphite, 4.4% alumina powder, 2.6% kyanite and 2.6% sodium bentonite in a cone premixer for more than 30 minutes to obtain a premix;

[0073] 8.8% of the high alumina aggregate with a particle size of 1~3mm, 5.3% of the brown corundum aggregate with a particle size of 1~3mm, 3.5% of the high alumina aggregate with a particle size of 0~1mm, 4.4 % Brown corundum aggregate with a particle size of 0~1mm, 4.4% high-alumina fine powder with a particle size of 0.088mm, 1.8% of brown corundum fine powder with a particle size of 0.088mm, 2.6% of a particle size of 0~ Coke between 1mm, 1.8% coke with a particle size of 1~3mm, 8.8% 90 silicon carbide, 8.8% 97 silicon carbide, 5.3% pyrophyllite, 13.2% ferrosilicon nitride, 5.3% white mud and 1.8% high-temperature asphalt is mixed with the obtained premix, put into a heated gun mud mixer, dry-mixed and stirred for more than 5 minutes to obtain a mixture;

[0074] The obtained mixture was wet-mixed with 4.4% gun clay resin w...

Embodiment 2

[0078] Premix 2.6% graphite, 3.5% alumina powder, 2.6% kyanite and 3.5% sodium bentonite in a cone premixer for more than 30 minutes to obtain a premix;

[0079] 14.2% of the brown fused alumina aggregate with a particle size of 1~3mm, 8% of the brown fused alumina aggregate with a particle size of 0~1mm, 6.2% of the brown fused alumina fine powder with a particle size of 0.088mm, 7% Coke with diameter of 1~3mm, 7% 90 silicon carbide, 8.8% 97 silicon carbide, 2.6% pyrophyllite, 16% ferrosilicon nitride, 4.4% white mud and 1.8% high-temperature asphalt are mixed with the obtained premix Mix the mixture, put it into the heated gun mud mixer, dry blend and stir for more than 5 minutes to obtain the mixture;

[0080] The obtained mixture was wet-mixed with 7% gun clay resin with a temperature of 35°C and 4.8% tar with a temperature of 90°C for more than 50 minutes to obtain anhydrous gun clay, and then take the mud to make the Marsha value, the Marsha value 0.8MPa.

[0081] The resulti...

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Abstract

The invention provides anhydrous stemming. The anhydrous stemming comprises the following components by weight percent: 25 to 30 percent of aluminum-containing aggregates, 5 to 10 percent of coke, 15 to 20 percent of silicon carbide, 5 to 10 percent of pyrophyllite, 10 to 20 percent of ferro-silicon nitride, 5 to 10 percent of aluminum-containing aluminum powder, 5 to 10 percent of white mud, 2 to 6 percent of high temperature asphalt, 8 to 15 percent of additives, 2 to 5 percent of sodium-based bentonite and 5 to 15 percent of tar; the particle size of the aluminum-containing aggregate is more than 0.088mm and less than or equal to 3mm; the particle size of the aluminum-containing fine powder is more than 0mm and less than or equal to 0.088mm; and a softening point of the high temperature asphalt is 105 to 150 DEG C. The anhydrous stemming not only can be used as the normal stemming of daily tapping, but also has an effect for repairing the stemming. The invention also provides a preparation method of the anhydrous stemming.

Description

Technical field [0001] The invention belongs to the technical field of refractory material preparation, and in particular relates to an anhydrous gun mud and a preparation method thereof. Background technique [0002] With the large-scale blast furnace in the past ten years, due to the masonry quality of the hearth of the blast furnace, the quality of carbon bricks, the temperature drop in the taphole area caused by the application of ceramic cup technology, and the intensified smelting of the blast furnace, iron There are many gaps in the mouth area and between the carbon bricks and the cooling stave. Blast furnace gas leaks into the tap hole through these gaps, blowing the slag iron flow away, causing the slag iron to splash after the tap opening is opened. Damaged blast furnace cooling stave or tuyere water cooling jacket will cause water leakage, which will cause accelerated pulverization of refractory bricks or carbon bricks, and will also form gaps, causing gas (water vapor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 陆晓锋刘利华周珩辉章兴高
Owner HUNAN XIANGGANG RUITAI TECH
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