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High-performance magnesite brick for glass kiln and preparation method of high-performance magnesite brick

A high-performance, glass kiln technology, applied in the field of refractory materials, can solve the problems of adverse environmental impact, deterioration of magnesia raw material quality, inevitable sulfur oxides, etc., to achieve good alkali erosion resistance, excellent creep performance, reduce Effect of sintering temperature

Pending Publication Date: 2022-03-29
大石桥市中建镁砖有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the binder contains sulfate, sulfur-containing oxides will inevitably be produced after high-temperature sintering, causing adverse effects on the environment
With the continuous mining of magnesite resources, high-grade first-grade and super-grade magnesite resources are gradually decreasing, resulting in a decline in the overall quality of magnesite raw materials, which brings difficulties to the manufacturing process of high-purity magnesite bricks for glass kilns

Method used

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  • High-performance magnesite brick for glass kiln and preparation method of high-performance magnesite brick
  • High-performance magnesite brick for glass kiln and preparation method of high-performance magnesite brick

Examples

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Embodiment 1

[0028] This embodiment provides a kind of high-performance magnesia brick for glass kiln, and its raw material is composed of: 180kg flotation magnesite high-purity sintered magnesia (40kg 0.096~0.999mm granular magnesia, 100kg 1~3.5mm granular magnesia, 40kg of fine powder magnesia below 0.074mm), 20kg of ultra-fine magnesia powder (MgO content higher than 97.0wt%) with a particle size of 15 μm or less, 0.6 kg of high-purity silica powder with a particle size of 25 μm or less (purity higher than 97.0 wt%), 0.3kg particle diameter is the high-purity magnesium silicate powder (purity is higher than 97.0wt%) below 45 μm, 6kg industrial dextrin and water are mixed into binding agent (concentration is 50wt%). The ultra-fine magnesia powder is obtained by secondary cyclone separation with a pendulum mill.

[0029] This embodiment also provides the preparation method of the high-performance magnesia bricks for the glass kiln, specifically:

[0030] (1) Superfine magnesia powder, hi...

Embodiment 2

[0039] This embodiment provides a kind of high-performance magnesia brick for glass kiln, and its raw material is composed of: 165kg flotation magnesite high-purity sintered magnesia (50kg 0.096~0.999mm granular magnesia, 85kg 1~3.5mm granular magnesia, 30kg of fine powder magnesia below 0.074mm), 15kg of ultra-fine magnesia powder (MgO content higher than 97.0wt%) with a particle size of 15 μm or less, 0.5 kg of high-purity silica powder with a particle size of 25 μm or less (purity higher than 97.0 wt%), 0.3kg particle diameter is the high-purity magnesium silicate powder (purity is higher than 97.0wt%) below 45 μ m, and the industrial dextrin of 5.5kg is mixed with water to form binding agent (mass concentration is 50wt%). The ultra-fine magnesia powder is obtained by secondary cyclone separation with a pendulum mill.

[0040] This embodiment also provides the preparation method of the high-performance magnesia bricks for the glass kiln, specifically:

[0041] (1) Ultrafin...

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Abstract

The invention relates to the technical field of refractory materials, in particular to a high-performance magnesite brick for a glass kiln and a preparation method of the high-performance magnesite brick. The magnesite high-purity magnesite clinker comprises the following components in parts by weight: 80-95 parts of flotation magnesite high-purity magnesite clinker, 5-15 parts of superfine magnesite powder and 0.05-0.5 part of high-purity silicon oxide powder, 0.05 to 0.5 part of high-purity magnesium silicate powder; and 1.0-3.5 parts of a binding agent. The binding agent is industrial dextrin which does not contain sulfate components. Compared with a traditional high-purity magnesite brick, the high-performance magnesite brick for the glass kiln has the advantages that flotation magnesite high-purity sintered magnesia is adopted as a main raw material, and resources are saved; the sintering temperature of the product is reduced by 70 DEG C, and energy is saved; industrial dextrin without sulfate is used, so that environmental protection is facilitated. In the aspect of performance, the alkali corrosion resistance and thermal shock resistance are better, the creep rate is smaller, and the good market application prospect is achieved.

Description

technical field [0001] The invention relates to the technical field of refractory materials, in particular to a high-performance magnesia brick for a glass kiln and a preparation method thereof. Background technique [0002] The glass furnace is a high-temperature melting furnace that needs to operate continuously for 8 to 15 years. The matching regenerator is the channel for the combustion-supporting air and exhaust gas in the normal operation of the glass furnace, so it needs to ensure good use effect. The maximum temperature of the regenerator can reach 1450°C to 1550°C. The flying material in the glass kiln is easy to stick to the surface of the refractory material, and the refractory material is prone to clogging, resulting in structural damage. [0003] Magnesia refractories have the advantages of high melting point and excellent corrosion resistance, and are suitable for use in places with severe high-temperature alkaline corrosion. In order to improve the service li...

Claims

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Application Information

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IPC IPC(8): C04B35/043C03B5/43
CPCC04B35/043C03B5/43C04B2235/3418C04B2235/3445C04B2235/77C04B2235/96C04B2235/9692Y02P40/50Y02P40/57
Inventor 唐家彬李广伟唐品刘锡俊邓丽娜崔冰洁易帅李海威吴兴胜
Owner 大石桥市中建镁砖有限公司
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