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Magnesium-rich alkaline sliding plate brick and production method thereof

A magnesium-rich alkaline, sliding brick technology, applied in the field of inorganic non-metallic refractory materials, can solve the problems of erosion, unable to achieve multiple continuous pouring, etc., and achieve the effect of improving compactness

Inactive Publication Date: 2018-08-17
无锡市南方耐材有限公司
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Problems solved by technology

[0004] With the advancement of steelmaking technology and changes in market demand, the smelting proportion of calcium-treated steel, high-oxygen steel, and low-carbon high-quality steel is increasing year by year. Traditional aluminum-carbon and aluminum-carbon-zirconium slides are severely eroded when casting such steels. , unable to achieve multiple continuous pouring

Method used

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  • Magnesium-rich alkaline sliding plate brick and production method thereof
  • Magnesium-rich alkaline sliding plate brick and production method thereof
  • Magnesium-rich alkaline sliding plate brick and production method thereof

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Embodiment Construction

[0022] Raw material specifications are as follows:

[0023] 98 magnesia: MgO content ≥ 98%, fused spinel: Al 2 o 3 Content ≥ 72%, MgO content ≥ 21%, high temperature promoting powder: Al 2 o 3 content ≥ 70%, carbon black: C content ≥ 98%, 97 silicon carbide: SiC content ≥ 97%, aluminum powder: active aluminum Al content ≥ 98%, aluminum-magnesium alloy powder: Al content 50± 3%, active metal (Al+Mg) not less than 97.0%, silicon powder: Si content ≥ 97%, thermoplastic resin: carbon residue 45±4%, solid content 75-80%, viscosity 15000-18000mpa.

[0024] The basic production process of the invented product is as follows: according to the formula in Table 1, 98 magnesia carry out batching according to the formula in Table 1 after crushing and screening, add wet mill or high-speed kneader and mix for 3 to 6 minutes, add phenolic resin Binder, after mixing, add the following fine powder: 98 magnesia, fused spinel, high-temperature burning powder, carbon black, 97 silicon carbide,...

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Abstract

The invention discloses a magnesium-rich alkaline sliding plate brick, comprising, by weight, 71-73% of 98 magnesium oxide, 5-9% of fused spinel, 3-6% of high-temperature combustion promoter powder, 3-4% of carbon black, 4-5% of 97 silicon carbide, 2-3% of aluminum powder, 2-4% of aluminum-magnesium alloy powder, and 2-3% of silicon powder, wherein all the components add up to 100% by weight, andalso comprising 4-5% of thermoplastic resin, and 0.4-0.5% of hexamethylenetetramine (urotropin). The invention is intended to provide a magnesium-rich alkaline sliding plate brick and a production method thereof to solve the problems that sliding plates in a steel plant have short lives, refractory steel has high consumption per ton, the cost needs to be reduced and resource waste needs to be reduced, and cost-reducing effect needs to be significant.

Description

technical field [0001] The invention relates to the field of inorganic non-metal refractory materials based on alumina, magnesia and carbon, and more specifically relates to magnesium-rich alkaline sliding bricks and a preparation method thereof. Background technique [0002] At present, the domestically used skateboards mainly include aluminum zirconium carbon, aluminum carbon skateboards and zirconium ring inlaid skateboards. Among them, the aluminum-zirconium-carbon sliding plate shows good thermal shock resistance, corrosion resistance and wear resistance when casting ordinary steel, and its comprehensive performance is good, so it is a very mature product. However, when pouring calcium-treated steel, because Al2O3 and SiO2 in the slide can react with CaO in molten steel at a relatively low temperature to form low-melting substances, it is very easy to cause slide plate in the process of scouring and flow control of molten steel. The surface of the board is roughened an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/043C04B35/64C04B35/632
CPCC04B35/043C04B35/632C04B35/64C04B2235/3222C04B2235/40C04B2235/402C04B2235/424C04B2235/428C04B2235/77C04B2235/9607C04B2235/9676
Inventor 杭文明王远林
Owner 无锡市南方耐材有限公司
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