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Anorthite light refractory brick and preparation method thereof

A technology of anorthite and refractory bricks, which is applied in the field of anorthite lightweight refractory bricks and its preparation, can solve the problems of low thermal conductivity, small pore size, and high porosity, and achieve excellent performance, remarkable energy-saving effect, and convenient production organization effect

Inactive Publication Date: 2014-06-04
史新明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical difficulty of anorthite lightweight refractory bricks is that the volume density is low, but the strength (compressive strength, flexural strength) is high, the porosity is very high, the pore size is small, and the thermal conductivity is very low. This is a conventional foam. Difficult to achieve by method and filling method

Method used

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  • Anorthite light refractory brick and preparation method thereof
  • Anorthite light refractory brick and preparation method thereof
  • Anorthite light refractory brick and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Ingredients:

[0039]

[0040] crafting process

[0041] (1) Measure and prepare raw materials according to the above ratio, clinker (anorthite brick return material, the same below) is optional;

[0042] (2) First add wollastonite to water and mix;

[0043] (3) Then, control the temperature at 30°C, add sulfuric acid, and stir to form a gel system;

[0044] (4) Add the remaining powder in turn, and finally add bentonite to form a uniform mixture of various raw materials; add appropriate amount of water as needed;

[0045] (5) Drying and calcination process

[0046] Pour the mixed material into a mold of suitable size, maintain at room temperature or heat appropriately (during this process, the temperature is controlled at 20°C) for 12 hours to form a preliminarily cured wet billet, and then remove the mold and transfer the wet billet to the drying equipment for drying dry;

[0047] Put the dried brick into the calcination furnace, and after 2 hours, it will rea...

Embodiment 2

[0053] Ingredients:

[0054]

[0055] crafting process

[0056] (1) Measure and prepare raw materials according to the above ratio, clinker (anorthite brick return material, the same below) is optional;

[0057] (2) First add wollastonite to water and mix;

[0058] (3) Then, control the temperature at 50°C, add sulfuric acid, and stir to form a gel system;

[0059] (4) Add the remaining powder in turn to form a uniform mixture of various raw materials; add appropriate amount of water as needed;

[0060] (5) Drying and calcination process

[0061] Pour the mixed material into a mold with a suitable size, control the temperature at 105°C, and keep it for 1 hour to form a preliminarily cured wet billet, then remove the mold and transfer the wet billet to the drying equipment for drying;

[0062]Put the dried billet into the calcination furnace, and after 12 hours, it will reach 1400°C. The calcination and drying time should be adjusted according to the heating rate. Burn ...

Embodiment 3

[0068] Ingredients:

[0069]

[0070]

[0071] crafting process

[0072] (1) Measure and prepare raw materials according to the above ratio, clinker (anorthite brick return material, the same below) is optional;

[0073] (2) First add wollastonite to water and mix;

[0074] (3) Then, control the temperature at 40°C, add sulfuric acid, and stir to form a gel system;

[0075] (4) Add the remaining powder in turn to form a uniform mixture of various raw materials; add appropriate amount of water as needed;

[0076] (5) Drying and calcination process

[0077] Pour the mixed material into a mold of suitable size, maintain at room temperature or heat appropriately (during this process, the temperature is controlled at 50°C) for 18 hours to form a preliminarily cured wet billet, and then remove the mold and transfer the wet billet to the drying equipment for drying dry;

[0078] Put the dried billet into the calcination furnace, and after 6 hours of rapid heating, it will ...

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Abstract

The invention belongs to the field of fireproofing materials, and particularly relates to an anorthite light refractory brick and a preparation method thereof. The preparation method comprises steps of dispersing a gel material in water, and adding a gel catalyst for incomplete reaction to form an inorganic gel system; constantly stirring the inorganic gel system so as to disperse the introduced silicon and aluminum components in the gel system to be mixed uniformly to obtain a mixed material; molding the mixed material, then maintaining, curing, drying, calcining, and producing through a manufacture procedure so as to obtain the refractory brick. The preparation method is simple and easy to operate, is environment-friendly, uses the raw materials according to local conditions, is convenient for production organization, has no special requirements on equipment, can produce products with excellent properties, and has remarkable energy conservation effect.

Description

technical field [0001] The invention belongs to the field of refractory materials, and in particular relates to an anorthite lightweight refractory brick and a preparation method thereof. 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. Generally, poly light balls or wood chips are added to generate pores through high-temperature combustion. [0003] There is a kind of anorthite refractory brick (Jm23) abroad, which has a delicate appearance and high strength. From the perspective of thermal conductivity, the thermal conductivity of anorthite refractory brick is 20-30% lower than that of other refractory bricks. Domestic research institutions and refractory manufacturers have conducted a lot of research on this, mainly using foaming method (foaming agent physical foaming, chemical foaming), filling method (filling holes ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 史新明
Owner 史新明
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