Corundum castable refractory

A refractory castable and corundum technology, which is applied in the field of refractory materials, can solve the problems of unsatisfactory, low medium temperature strength, affecting the high temperature performance of materials, etc., and achieves good thermal shock stability and improves the effect of medium temperature strength.

Inactive Publication Date: 2014-01-29
NINGXIA TIANZONG HONGGUANG COGENERATION TECH
View PDF3 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, due to the use of calcium aluminate cement and SiO2 micropowder in traditional low cement or ultra-low cement bonded corundum castables, the temperature at which the liquid phase appears in the material decreases, which seriously affects the high temperature performance of the

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] (1) Preparation of castable:

[0012] 20 parts of 2.5mm coarse aggregate, 35 parts of 1.5mm medium aggregate, 15 parts of 0.5mm fine aggregate, 5 parts of sodium silicate, 5 parts of nano-magnesium oxide, 5 parts of nano-zinc oxide, 10 parts of alumina micropowder, and 5 parts of hydrated alumina . According to the above-mentioned ratio, the raw materials are weighed and blended together to obtain the corundum refractory castable.

[0013] (2) Physical performance test:

[0014] After drying at 110℃×24h, the flexural strength is 100.2MPa, and the compressive strength is 23.6MPa;

[0015] After 1100℃×3H treatment, the flexural strength is 120.4MPa, and the compressive strength is 25.5MPa;

[0016] After 1500℃×3H treatment, the flexural strength is 125.3MPa, and the compressive strength is 24.3MPa.

Embodiment 2

[0018] (1) Preparation of castable:

[0019] 15 parts of 2.0mm coarse aggregate, 40 parts of 1.0mm medium aggregate, 15 parts of 0.1mm fine aggregate, 1 part of sodium silicate, 6 parts of nano-magnesium oxide, 6 parts of nano-zinc oxide, 11 parts of alumina micropowder, 6 parts of hydrated alumina . According to the above-mentioned ratio, the raw materials are weighed and blended together to obtain the corundum refractory castable.

[0020] (2) Physical performance testing:

[0021] After drying at 110℃×24h, the flexural strength is 99.2MPa, and the compressive strength is 22.1MPa;

[0022] After 1100℃×3H treatment, the flexural strength is 115.1MPa, and the compressive strength is 24.2MPa;

[0023] After 1500℃×3H treatment, the flexural strength is 120.1MPa, and the compressive strength is 23.6MPa.

Embodiment 3

[0025] (1) Preparation of castable:

[0026] 18 parts of 2.3mm coarse aggregate, 38 parts of 1.2mm medium aggregate, 13 parts of 0.3mm fine aggregate, 4 parts of sodium silicate, 8 parts of nano-magnesium oxide, 4 parts of nano-zinc oxide, 13 parts of alumina micropowder, 2 parts of hydrated alumina . According to the above-mentioned ratio, the raw materials are weighed and blended together to obtain the corundum refractory castable.

[0027] (2) Physical performance testing:

[0028] After drying at 110℃×24h, the flexural strength is 101.5MPa, and the compressive strength is 23.9MPa;

[0029] After 1100℃×3H treatment, the flexural strength is 122.4MPa, and the compressive strength is 26.6MPa;

[0030] After 1500℃×3H treatment, the flexural strength is 126.3MPa, and the compressive strength is 25.1MPa.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Flexural strengthaaaaaaaaaa
Compressive strengthaaaaaaaaaa
Flexural strengthaaaaaaaaaa
Login to view more

Abstract

The invention discloses a corundum castable refractory, comprising coarse aggregate, intermediate aggregate, fine aggregate, sodium silicate, nanometer magnesium oxide, nanometer zinc oxide, alumina micro powder and hydrated alumina, wherein the corundum castable refractory comprises the following raw materials in parts by weight: 15-20 parts of coarse aggregate, 35-40 parts of intermediate aggregate, 15-30 parts of fine aggregate, 5-10 parts of sodium silicate, 5-10 parts of nanometer magnesium oxide, 1-5 parts of nanometer zinc oxide, 10-15 parts of alumina micro powder and 1-6 parts of hydrated alumina; the coarse aggregate is corundum, the intermediate aggregate comprises silicon carbide and zircon corundum, and the fine aggregate is corundum.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, in particular to a corundum refractory castable. Background technique [0002] Compared with qualitative refractory products, unshaped refractory materials represented by refractory castables have the advantages of short process flow, low production energy consumption and cost, convenient use, wide application range, integrity and good use effect, so they are widely used in the world. It has developed rapidly, and its proportion in the whole refractory material is getting higher and higher. In some countries with advanced refractory technology, the output of unshaped refractories has approached or even exceeded the output of shaped products. For example, the current output of unshaped refractory materials in Japan accounts for about 60% of the total refractory materials; in the United States, it is about 50%; in Britain, Germany, France and other countries, it is 40% to 50%. Today,...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C04B35/66
Inventor 穆祥王西来董伟胜刘文艳解仁刘朝晖苏新国王淑娟
Owner NINGXIA TIANZONG HONGGUANG COGENERATION TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap