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Preparation method of light-weight heat-preservation brick

A thermal insulation brick and lightweight technology, applied in the field of thermal insulation materials, can solve the problems of complicated firing process and long time consumption, and achieve the effect of simple firing process, wide application range and improved plasticity

Active Publication Date: 2016-01-13
KEDA INDUSTRIAL GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The firing process of this patent is relatively complicated, and the total firing time is about 10 hours, which takes a long time

Method used

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  • Preparation method of light-weight heat-preservation brick

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preparation example Construction

[0052] Such as figure 1 As shown, the invention provides a kind of preparation method of light-weight insulating brick, comprising:

[0053] S101. The raw materials are mixed according to the following formula, and after ball milling, spraying and molding, a green body is obtained:

[0054] Industrial cinder 50-76%

[0055] Mud 6-20%

[0056] Potassium feldspar 4-20%

[0057] Albite 4-20%

[0058] Quartz 4-20%

[0059] Polishing slag 0-15%;

[0060] Wherein, ball milling and spraying can refer to the existing technology of making ceramic tiles, and the molding can be either pressing molding or powder stacking molding. When the green body is formed by pressing, the post-processing includes polishing and edge grinding. When the green body is formed by stacking powder, the post-processing includes cutting into boards and edge grinding.

[0061] Industrial coal slag is the main body of the formula, and the addition amount is more than 50%. The industrial cinders include p...

Embodiment 1

[0095] Mix the raw materials according to the ratio, the formula is: 60% industrial cinder, 20% mud, 4% potassium feldspar, 4% albite feldspar, 4% quartz, 8% polishing slag; after ball milling, spraying, pressing and drying , firing, polishing, edging, and finally packaged into finished products;

[0096] Wherein, firing step comprises:

[0097] (1) Add a refractory backing plate under the green body, and spread at least one layer of alumina high-temperature powder between the green body and the refractory backing plate;

[0098] (2) Raise the green body from room temperature to 800°C, and the heating time is t 1 =20min;

[0099] (3) Slowly raise the temperature of the green body from 800°C to 1000°C, and the heating time is t 2 =40min, and heat preservation under the condition of temperature 1000℃, the heat preservation time is t 3 =20min;

[0100] (4) Raise the green body from 1000°C to temperature T, wherein the temperature T is 1150°C, and the heating time is t 4 =40...

Embodiment 2

[0104] Mix the raw materials according to the ratio, the formula is: 65% industrial cinder, 10% mud, 5% potassium feldspar, 5% albite feldspar, 5% quartz, 10% polishing slag;

[0105] After ball milling, spraying, pressing, drying, firing, polishing, edging, and finally packaging into finished products.

[0106]Wherein, firing step comprises:

[0107] (1) Add a refractory backing plate under the green body, and spread at least one layer of high-temperature silica powder between the green body and the refractory backing plate;

[0108] (2) Raise the green body from room temperature to 800°C, and the heating time is t 1 =30min;

[0109] (3) Slowly raise the temperature of the green body from 800°C to 1000°C, and the heating time is t 2 =50min, and heat preservation under the condition of temperature 1000℃, the heat preservation time is t 3 =25min;

[0110] (4) Raise the green body from 1000°C to temperature T, wherein the temperature T is 1200°C, and the heating time is t ...

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Abstract

The invention discloses a preparation method of light-weight heat-preservation bricks. The preparation method includes the steps of 1) mixing the following raw materials comprising: 50-76% of industrial coal slag, 6-20% of a mud material, 4-20% of potassium feldspar, 4-20 parts of sodium feldspar, 4-20% of quartz and 0-15% of polishing residue, and performing ball milling, spraying and moulding to produce a green body; (2) drying the green body; (3) sintering the green body; (4) after-treating the sintered green body, and packaging a finish product. The preparation method is simple in step, is short in sintering time and can save energy resources. The produced heat-preservation brick is solid in texture, is low in specific gravity, is high in porosity, is higher than 1000 DEG C in resistance temperature, can easily resist common fire, is low in heat conductivity and high in pressure resistant strength, and is very suitable for heat insulation of outer walls and indoor heat insulation and sound insulation.

Description

technical field [0001] The invention relates to the field of thermal insulation materials, in particular to a preparation method of lightweight thermal insulation bricks used for thermal insulation of exterior walls and thermal insulation of indoor heat and sound insulation. Background technique [0002] The thermal insulation material involved in the present invention is mainly used for thermal insulation of exterior walls and indoor thermal insulation and sound insulation. Existing thermal insulation materials mainly include the following types: [0003] 1. The existing external wall insulation materials are mainly benzene boards. The fire-resistant temperature of benzene boards is about 700 degrees, and they have no hardness. They have a texture similar to cotton, so they must be used with other building materials as rigid supports. , to form a composite material for use. Moreover, the temperature of the fire is generally 800-1000 degrees, and the fire-resistant temperat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/13
Inventor 林智武祯邵俊杰郭峰陈全娣
Owner KEDA INDUSTRIAL GROUP CO LTD
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