Light high-strength unburned brick

A high-strength, light-weight technology, applied in the field of refractory materials, can solve problems such as increased energy consumption, and achieve the effects of high refractoriness, convenient preparation, and high compressive strength

Inactive Publication Date: 2008-05-07
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

High-temperature sintering is required in the process of preparing alumina

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The mixing ratio adopts: 40% of corundum hollow ball, 45% of high alumina bauxite, 15% of high alumina cement, and 22% of modified water glass solution. In the preparation process, the high alumina bauxite and the high alumina cement are first mixed uniformly in the ball mill, then the water glass is added to the corundum hollow balls and stirred evenly, and then the mixed powder of the high alumina bauxite and the high alumina cement is added and mixed well. Vibration and pressurization method, after molding, the samples are made by standing at room temperature for three days and then drying at 110 °C.

Embodiment 2

[0023] The mixing ratio adopts: 60% of corundum hollow spheres, 30% of high alumina bauxite, 10% of high alumina cement, plus 18% of modified water glass solution, the preparation method is the same as that of Example 1.

Embodiment 3

[0025] The mixing ratio adopts: corundum hollow spheres 45%, high alumina bauxite 47%, high alumina cement 8%, plus 21% modified water glass solution, the preparation method is the same as that of Example 1.

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PUM

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Abstract

The invention discloses an unfired brick with light weight and high intensity. The invention contains the components in quality percent as below: 40 to 60 percent of corundum hollow ball, 30 to 45 percent of high bauxite, 8 to 15 percent of high alumina cement and 18 to 22 percent of adscititious modified sodium silicate binder. The figuration bricks and the abnormal bricks with required size are made by adopting the vibration moulding method and being dried with 110 DEG C, wherein, the cubage thickness of the samples is 1.1 to 1.5 g/cm3, the normal temperature pressure compressive strength is more than or equal to 15Mpa, and the using temperature is 1500 DEG C. The unfired brick with light weight and high intensity can be widely used in varied heat engineering devices which are needed to be heat insulated and heat preserved. The invention has the advantages of large strength, high refractability and good heat preserving as well as heat insulating capacities, thereby being able to greatly reduce the energy consumption. Moreover, the invention having convenient preparation and simple technique is useful for the cost saving.

Description

technical field [0001] The invention relates to refractory materials, in particular to a light-weight and high-strength non-burning brick. Background technique [0002] Lightweight refractory materials are a key part of various kilns and other thermal equipment. High temperature resistant lightweight materials are in direct contact with flames, requiring both high temperature resistance and heat insulation and energy saving. The performance requirements of the materials are particularly high. Develop materials with light weight, high strength, good thermal shock stability, and high operating temperature that can meet the needs of high temperature kilns with lightweight structures, and change the traditional high temperature kilns that use heavy materials, such as large heat capacity, small heating rate, large energy consumption, Short service life, large amount of construction and maintenance and other shortcomings, better service for the construction of a resource-saving an...

Claims

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Application Information

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IPC IPC(8): C04B28/06C04B14/04C04B14/30
Inventor 王家邦王立旺
Owner ZHEJIANG UNIV
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