Spinel low-cement functional refractory material pouring material

A spinel, refractory technology, applied in the field of refractories, can solve the problems of polluting the environment, harming the health of operators, and short service life.

Inactive Publication Date: 2007-01-10
江苏苏嘉集团新材料有限公司
View PDF0 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the castables currently used contain Cr 2 o 3 , due to Cr 2 o 3 Cr in 3+ It is easy to change into Cr during the heating process 6+ , while containing Cr 6+ The compound has carcinogenic effect, will damage the health of work

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 3

[0014] Contains 46% magnesium-aluminum spinel, 33% white corundum, 3% activated alumina, 5.1% magnesium-zirconium eutectic material, 5% cement, 1.5% water reducer ADS or ADW, 0.2% explosion-proof fiber, heat-resistant steel fiber 1.2%, water 5%. The castable is used to cast the ladle nozzle block, and the service life reaches 55 times.

Embodiment 4

[0016] Contains 65% magnesium aluminum spinel, 15% white corundum, 9.49% active alumina, 0.5% magnesium zirconium eutectic material, 4% cement, 0.01% explosion-proof fiber, 0.5% silicon powder, and 5.5% water. The castable is used to cast the ladle nozzle block, and the service life reaches 55 times.

Embodiment 5

[0018] Contains 40% magnesium-aluminum spinel, 40% white corundum, 5.3% activated alumina, 5% magnesium-zirconium eutectic material, 2% cement, 0.5% water reducing agent, 0.2% explosion-proof fiber, 2.0% heat-resistant steel fiber, Silica powder 1.0%, water 4%. The castable is used to cast the ladle nozzle block, and the service life reaches 55 times.

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

A spinel refractory pouring material containing a poor cement quality function is one kind of refractory. According to the invention, the material contains spinel 40-65%, white corundum 15-40%, activated alumina 3-15%, crystal materials of magnesium and zirconium 0.5-8%, cement 2-5%, adjunct 0.01~4.7%,water 3-7%. There is no Cr in such kind of pouring material, so it can not cause any environmental pollution problem. The material also has a favorable anti-heating and shocking performance due to the use of the eutectic material of magnesium and zirconium.

Description

technical field [0001] The invention belongs to a kind of refractory material. Background technique [0002] Refractory castables are mainly used in the manufacture of steel-making refractory components, such as ladle nozzle block, vent brick, vent plug, steel-making electric furnace bottom electrode cover brick and other parts. Most of the castables currently used contain Cr 2 o 3 , due to Cr 2 o 3 Cr in 3+ It is easy to change into Cr during the heating process 6+ , while containing Cr 6+ These compounds have carcinogenic effects, will damage the health of workers and pollute the environment. Without Cr 2 o 3 The castable has poor slag erosion resistance and high temperature thermal shock resistance, and has a short service life, which cannot meet the performance requirements of the process for the material. Contents of the invention [0003] The object of the present invention is to seek a spinel low cement functional refractory castable, which does not contai...

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): C04B35/66C04B14/36C04B28/00C04B30/02C04B14/48
Inventor 张雪松刘步周俞晓东
Owner 江苏苏嘉集团新材料有限公司
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