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Environment-protection dry type vibrating material and production method thereof

A dry vibrating material and environment-friendly technology, applied in the field of unshaped refractory materials, can solve the problems of irritating the respiratory tract and eyes, affecting physical health, increasing product cost, etc., achieving high strength at low and medium temperatures, without affecting slag resistance and The effect of oxidation resistance, excellent performance

Inactive Publication Date: 2008-07-16
PANZHIHUA SHUNTENG GRP METALLURGY MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of phenolic resin as a binder, on the one hand, is expensive, which increases the cost of the product; on the other hand, the product has low medium-temperature strength, and is prone to the risk of collapse when the package is baked at medium temperature
And the matched hardening accelerator hexamethylenetetramine is decomposed by heat, and the gas produced has a strong stench, which irritates the respiratory tract and eyes, affects the health of the body, and deteriorates the working environment

Method used

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  • Environment-protection dry type vibrating material and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] The mass percent content of each chemical composition of the environment-friendly dry vibrating material provided by the invention is: MgO70.20%, CaO2.14%, Al 2 o 3 3.28%, C 15.30%, SiO 2 3.31%, SiC1.73%, Fe 2 o 3 1.81%.

[0064] The specific ratio (percentage by weight) of each raw material is: 55% of waste magnesia-carbon brick sand with a particle size of 5-1mm, 20% of waste magnesia-carbon brick sand with a particle size of 3-0mm, 25% of waste magnesia-carbon brick powder with a particle size of ≤0.088mm, metal Al powder (extra) 1.2%, metal Si powder (extra) 1.0%, SiC powder (extra) 2%, α-Al 2 o 3 powder (extra) 0.5%, borax (extra) 1.8%, silica powder (extra) 0.2%, inorganic salt binder (extra) 3.8%.

[0065] Weigh according to the above weight percentage, then put the fine powder into a small mixer and mix for 15 minutes, then put it into a small bag for later use. Put the coarse particles and binder into the planetary mixer for 4 minutes, then add the mi...

Embodiment 2

[0067] The mass percent content of each chemical composition of the environment-friendly dry vibrating material provided by the invention is: MgO5.33%, CaO2.18%, Al 2 o 3 71.24%, C 12.54%, SiO 2 3.60%, SiC1.80%, Fe 2 o 3 1.31%.

[0068] The specific ratio (percentage by weight) of each raw material is: 63% of waste aluminum-magnesia-carbon sand with a particle size of 5-1mm, 12% of waste aluminum-magnesia-carbon brick sand with a particle size of 3-0mm, and 25% of waste aluminum-magnesia-carbon brick powder with a particle size of ≤0.088mm , metal Al powder (extra) 1.0%, metal Si powder (extra) 0.8%, 94SiC powder (extra) 2.0%, α-Al 2 o 3 Powder (extra) 0.5%, borax (extra) 2.2%, silica powder (extra) 0.2%. Inorganic salt binder (additional) 3.5%. The 94SiC-based SiC material with a SiC content of 94% is referred to as an abbreviation.

[0069] Weigh according to the above weight percentage, then put the fine powder into a small mixer and mix for 20 minutes, then put ...

Embodiment 3

[0071] The mass percent content of each chemical composition of the environment-friendly dry vibrating material provided by the invention is: MgO56.00%, CaO2.04%, Al 2 o 3 25.33%, C 8.72%, SiO 2 2.78%, SiC1.39%, Fe 2 o 3 1.74%.

[0072] The specific ratio (percentage by weight) of each raw material is: 12% of waste aluminum magnesia carbon brick sand with a particle size of 5-1mm, 20% of waste magnesia carbon brick sand with a particle size of 5-1mm, and waste aluminum magnesia carbon brick with a particle size of 3-0mm Sand 17%, waste magnesia carbon sand with a particle size of 3-0mm 26%, particle size ≤ 0.088mm, waste aluminum magnesia carbon brick powder 10%, waste magnesia carbon brick powder 15%, metal Al powder (additional) 1.0%, metal Si Powder (extra) 0.8%, 94SiC powder (extra) 2.0%, α-Al 2 o 3 Powder (extra) 0.5%, borax (extra) 2.2%, silica powder (extra) 0.2%. Inorganic salt binder (additional) 3.5%.

[0073] Weigh according to the above weight percentag...

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Abstract

The invention relates to a dry vibration material of environmental protection type and a preparation method thereof; the invention is characterized in that vibration material of intermediate dry type is grain composition formed by manually cleaning and crushing waste magnesia-carbon bricks, waste aluminium-magnesia carbon or the mixture thereof in steelmaking plants. Inorganic silicate is selected as adhesive; metal Al powders, Si powders and SiC powders are added as compound anti-oxidant; borax and silicon powders are selected as medium-temperature agglutinant. The dry vibration material prepared banishes the conventional phenolic resin as adhesive, and meets the requirement of environmental protection. The service life is expanded from 12 hours to over 20 hours; the invention is vibration material of intermediate dry type with strong practicality, easy preparation and rich material.

Description

technical field [0001] The invention relates to an environment-friendly dry vibration material and a preparation method thereof. It is mainly used in one of the main equipments of the continuous casting process in the modern steelmaking technology: the working layer of the tundish, as well as other metal melting furnaces and related thermal equipment. It belongs to the field of unshaped refractories. Background technique [0002] Tundish dry vibrating material is an unshaped refractory material developed internationally in recent years. It does not need to add any water or other liquids during construction. It can obtain a dense construction body through vibration and can be used without maintenance. Compared with traditional castables, it has the advantages of simple production, short construction time, low labor intensity, and convenient use, so it has been rapidly promoted in recent years. [0003] At present, fused magnesia and fused magnesium powder are generally used...

Claims

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Application Information

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IPC IPC(8): C04B35/66
Inventor 徐宏武于琪芳
Owner PANZHIHUA SHUNTENG GRP METALLURGY MATERIAL
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