Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Low-density thermostable high-alumina lightening casting material

A light-weight castable, high-temperature-resistant technology, applied in the field of unshaped refractory materials, can solve problems such as the inability to meet the use requirements of advanced burner equipment

Active Publication Date: 2007-10-31
上海彭浦特种耐火材料厂有限公司
View PDF0 Cites 27 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, generally speaking, the bulk density is less than 1.35g / cm 3 The long-term service temperature of high-quality lightweight castables can only be below 1300°C, and after heat treatment at a high temperature of 1300°C×3hr, they all tend to shrink, which cannot meet the use requirements of advanced burner equipment

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

[0039] Al 2 o 3The mass percentage is 57.5%, CaO is 5.8%, and the specific ratio is 12% of 5-3mm lightweight mullite aggregate, 22% of 3-1mm lightweight mullite aggregate, and 1-0mm lightweight mullite aggregate Stone aggregate 4%, 2 Micronized 4%, α-Al 2 o 3 Micro powder 6%, pure calcium aluminate cement 20%, paper fiber 0.5%, organic fiber 0.2%.

[0040] Firstly weigh according to the above ratio, pre-mix the fiber and some fine powder less than 1.0mm, and then mix it with other granular materials, and fully break up the fiber.

Embodiment 2

[0042] Al that provides low density, high temperature resistant lightweight castables 2 o 3 The mass percentage is 50.8%, CaO is 3.7%, and the specific ratio is 7% of 5-3mm lightweight mullite aggregate, 28% of 3-1mm lightweight mullite aggregate, and 1-0mm lightweight mullite aggregate Stone aggregate 6%, 2 Micropowder 8%, α-Al 2 o 3 Micro powder 5%, pure calcium aluminate cement 13%, paper fiber 0.5%, organic fiber 2.0%.

[0043] Firstly weigh according to the above ratio, pre-mix the fiber and some fine powder less than 1.0mm, and then mix it with other granular materials, and fully break up the fiber.

[0044] project

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

No PUM Login to View More

Abstract

The invention discloses a high-alumina lightweight injecting material with low density, low heat conductivity and stable high temperature volume and preparing method, which comprises the following steps: allocating mass percent with 26-55% lightweight mullite skeletal material, 5-20% floating pearl, 3-10% quartz, 10-25% blue spar, 2-10% silica micronized flour, 2-10% alpha-Al2O3, 10-25% pure alumina cement and 0. 5-5% fiber; getting the product. This invention possesses low volume density, small heat conductivity at 1000 deg. c and good high temperature volume stability, which can be used for long-period under 1400 deg. c.

Description

technical field [0001] The invention relates to a high-quality high-aluminum lightweight castable with low density, low heat conduction, stable volume at high temperature and a preparation method thereof, which can be used as a working lining of a burner for a long-term service temperature up to 1400°C, and belongs to the field of amorphous refractory materials. Background technique [0002] Lightweight castables have been widely used in various industrial kilns and burners, but due to the contradiction between heat insulation, strength and high temperature resistance, the bulk density is usually less than 1.35g / cm 3 High-quality lightweight castables are used as insulation layers in applications above 1300 °C. The traditional masonry method is composed of one layer of insulation layer and one layer of high-temperature-resistant heavy refractory material. This double-layer structure not only increases the inner lining The thickness will bring load to the device, and the cons...

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): C04B35/66C04B14/06C04B14/04C04B7/32
Inventor 赵玲娣王礼玮杨玲刘红波
Owner 上海彭浦特种耐火材料厂有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com