Anorthite light refractory brick and preparation method thereof

A technology of refractory bricks and anorthite, which is applied in the field of anorthite lightweight refractory bricks and its preparation, can solve the problems of low thermal conductivity, achieve excellent performance, low price, and remarkable energy-saving effect

Active Publication Date: 2013-02-27
LUYANG ENERGY SAVING MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, J23 bricks from Morgan Thermal Ceramics Company in the UK are of the best quality. From the perspective of thermal conductivity, J23 is 20-30% lower than other bricks. The higher the temperature, the greater the gap. No brick can compete with it.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Ingredients ratio (mass percentage):

[0028] Calcined coal gangue fine powder 59.81% diatomite 2.15% silica sol 6.35% quicklime 3.01% building gypsum powder 22.68% kyanite powder 6.00% water 300%

[0029] crafting process

[0030] A. Measure and prepare raw materials according to the above ratio, clinker (anorthite brick return material, the same below) is optional;

[0031] B. First add the silica sol to a sufficient amount of water and mix;

[0032] C. Add calcined coal gangue fine powder, diatomaceous earth, kyanite powder, building gypsum powder and other powders in sequence, and finally add quicklime, and form a uniform mixed liquid after stirring;

[0033] D. Drying and calcination process

[0034] Place the mixed material in a suitable size utensil for drying;

[0035] Put the dried billet into the calcination furnace, and after 6 hours of rapid heating, it will reach 1288°C-1371°C. The calcination and drying time should be adjusted in a certain proportion a...

Embodiment 2

[0041] Ingredients ratio (mass percentage):

[0042] Calcined gangue fine powder 60.60% Kyanite 1.96% Diatomaceous earth 2.11% Silica sol 6.23% Quicklime 2.95% Construction gypsum powder 26.16% Water 300%

[0043] crafting process

[0044] A. Measure and prepare raw materials according to the above ratio;

[0045] B. First add the silica sol to a sufficient amount of water and mix;

[0046] C. Add calcined coal gangue fine powder, diatomaceous earth, kyanite powder, building gypsum powder and other powders in sequence, and finally add quicklime, and form a uniform mixed liquid after stirring;

[0047] D. Drying and calcination process

[0048] Place the mixed material in a suitable size utensil for drying;

[0049] Put the dried brick into the calcination furnace, and after 6 hours of rapid heating, it will reach 1288°C-1371°C. The calcination and drying time should be adjusted in a certain proportion according to the heating rate, and the holding time should be enough to ...

Embodiment 3

[0055] Ingredients ratio (mass percentage):

[0056] Calcined gangue fine powder 60.88% silica sol 9.87% quicklime 2.96% building gypsum powder 26.28% water 300%

[0057] crafting process

[0058]A. Measure and prepare raw materials according to the above ratio;

[0059] B. First add the silica sol to a sufficient amount of water and mix;

[0060] C. Add calcined coal gangue fine powder, building gypsum powder and other powders in sequence, and finally add quicklime, and form a uniform mixed liquid after stirring;

[0061] D. Drying and calcination process

[0062] Place the mixed material in a suitable size utensil for drying;

[0063] Put the dried billet into the calcination furnace, and after 6 hours of rapid heating, it will reach 1288°C-1371°C. The calcination and drying time should be adjusted in a certain proportion according to the heating rate, and the holding time should be enough to make the whole brick body sinter consistently Temperature, that is to say, to ...

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Abstract

The invention relates to an anorthite light refractory brick and a preparation method thereof and belongs to the field of refractory materials. The brick comprises 35-37% of Al2O3, 40-50% of SiO2, less than 1% of Fe2O3, 10-15% of CaO and less than 1.1% of Na2O+K2O. The volume concentration is in a range from 480Kg / m3 to 510Kg / m3, the compressive strength is more than 1.0 Mpa, the thermal conductivity is 0.14W / m.K below 400 DEG C, and the reheating linear change rate is 1200 DEG C *24h<-1.0%. According to the preparation method, raw materials are normal, large in quantity, easy to obtain and low in cost in the market. The requirement of the preparation method for devices is low.

Description

technical field [0001] The invention relates to an anorthite lightweight refractory brick and a preparation method thereof, belonging to the field of refractory materials. Background technique [0002] At present, about 20-30% of the lightweight refractory brick industry is 23-grade lightweight refractory bricks. Lightweight bricks value their thermal insulation performance. The main index is thermal conductivity. Generally, poly light balls or wood chips are added. High temperature combustion produces pores. [0003] At present, the J23 grade brick of Morgan Thermal Ceramics Company in the United Kingdom is the best in quality. From the perspective of thermal conductivity, J23 has a thermal conductivity 20-30% lower than other bricks. The higher the temperature, the greater the gap. No brick can compete with it. [0004] The technical difficulties of anorthite lightweight bricks are low bulk density requirements, high strength (compressive strength, flexural strength) requ...

Claims

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Application Information

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IPC IPC(8): C04B35/66
Inventor 鹿超齐源史新友张健张善财王明旭
Owner LUYANG ENERGY SAVING MATERIALS CO LTD
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