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

Columnar mullite brick with high wear resistance, and production method thereof

A mullite, high wear-resistant technology, applied in the field of refractory materials, can solve the problems of poor wear resistance, poor volume stability, low cost performance, etc., to achieve the effect of low price, guaranteed volume stability, and improved cost performance

Active Publication Date: 2019-07-05
宜兴市丁山耐火器材有限公司
View PDF16 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Purpose of the invention: the purpose of the present invention is to solve the problems of low mullite content, poor wear resistance, poor volume stability and low cost performance of existing mullite high wear-resistant bricks. Provide a columnar mullite high wear-resistant brick with high content of columnar mullite, excellent wear resistance, good volume stability, and high cost performance, which can meet the needs of no major repairs in the cooling section of large CDQ coke ovens for 8 years

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Columnar mullite brick with high wear resistance, and production method thereof
  • Columnar mullite brick with high wear resistance, and production method thereof
  • Columnar mullite brick with high wear resistance, and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A columnar mullite high wear-resistant brick and its preparation method:

[0036] (1) The preparation method of described bauxite granulation material is: earlier with secondary bauxite clinker particle, secondary bauxite raw meal powder, chromite powder, yttrium oxide powder and silica sol by mass ratio 65:35: 6:8:20 Ingredients, mixed evenly and pressed into a green body under a pressure of 30-50MPa; then put the green body at 100-140°C for 24 hours; finally, crush the dried green body into granules smaller than 5mm , that is, bauxite pellets.

[0037] (2) The composition and mass ratio of the columnar mullite high wear-resistant brick are:

[0038]

[0039] (3) According to the above-mentioned raw materials and their contents, the three-grade bauxite raw meal powder, pyrophyllite fine powder, SiO 2 Micropowder, α-Al 2 o 3 Micropowder, CeO 2 Blend the micropowder, Al-Zn alloy powder and potassium carbonate, and the mixing time is 3 to 5 minutes to make the mix...

Embodiment 2

[0042] A columnar mullite high wear-resistant brick and its preparation method:

[0043] (1) The preparation method of described bauxite granulation material is: earlier with secondary bauxite clinker particle, secondary bauxite raw meal powder, chromite powder, yttrium oxide powder and silica sol by mass ratio 65:35: 4:2:10 ingredients, mixed evenly and pressed into a green body under a pressure of 30-50MPa; then put the green body at 100-140°C for 24 hours; finally, crush the dried green body into granules smaller than 5mm , that is, bauxite pellets.

[0044] (2) The composition and mass ratio of the columnar mullite high wear-resistant brick are:

[0045]

[0046] (3) According to the above-mentioned raw materials and their contents, the three-grade bauxite raw meal powder, pyrophyllite fine powder, SiO 2 Micropowder, α-Al 2 o 3 Micropowder, CeO 2 Blend the micropowder, Al-Zn alloy powder and potassium carbonate, and the mixing time is 3 to 5 minutes to make the mix...

Embodiment 3

[0049] A columnar mullite high wear-resistant brick and its preparation method:

[0050] (1) The preparation method of described bauxite granulation material is: earlier with secondary bauxite clinker particle, secondary bauxite raw meal powder, chromite powder, yttrium oxide powder and silica sol by mass ratio 65:35: (4~5):(2~4):(10~16) Ingredients, mixed evenly and pressed into green body under 30-50MPa pressure; then put the green body at 100-140°C for 24 hours; finally dry The final green body is broken into granules smaller than 5 mm to obtain bauxite granules.

[0051] (2) The composition and mass ratio of the columnar mullite high wear-resistant brick are:

[0052]

[0053] (3) According to the above-mentioned raw materials and their contents, the three-grade bauxite raw meal powder, pyrophyllite fine powder, SiO 2 Micropowder, α-Al 2 o 3 Micropowder, CeO 2 Blend the micropowder, Al-Zn alloy powder and potassium carbonate, and the mixing time is 3 to 5 minutes t...

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
Bulk densityaaaaaaaaaa
Normal temperature compressive strengthaaaaaaaaaa
Bulk densityaaaaaaaaaa
Login to View More

Abstract

The invention relates to a columnar mullite brick with high wear resistance. The columnar mullite brick with high wear resistance comprises 57-72 wt% of granulated bauxite, 8-16 wt% of third-level rawbauxite powder, 6-14 wt% of fine pyrophyllite powder, 3-6 wt% of fine SiO2 powder, 1-3 wt% of alpha-Al2O3 micro-powder, 0.2-1 wt% of CeO2 micro-powder, 0.5-2 wt% of Al-Zn alloy powder and 0.5-2 wt% of potassium carbonate powder. The invention also discloses a production method of the columnar mullite brick with high wear resistance. The granulated bauxite material is obtained by batching second-level bauxite clinker particles, second-stage raw bauxite powder, chromite powder, yttrium oxide micro-powder and silica sol according to a mass ratio 65:35:(4-6):(2-8):(10-20), compacting the obtainedmixture, drying the compacted mixture, and crushing the dried mixture. All the raw materials are weighed in proportion, and then are mixed, aged, shaped, dried and fired to produce the columnar mullite brick with high wear resistance. The columnar mullite brick with high wear resistance has the characteristics of high columnar mullite content, excellent wear resistance, good volume stability andhigh cost performance, and can completely meet the needs of no major repairing of the cooling section of a large dry quenching coke oven for 8 years.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to a columnar mullite high wear-resistant brick and a preparation method thereof. Background technique [0002] CDQ technology has the advantages of water saving, less air pollutant emissions, high energy efficiency, and good coke quality. It is an energy-saving and environmental protection technology that is promoted by the state. In recent years, CDQ technology has developed rapidly in my country. At present, my country is the country with the largest number of CDQ devices in the world and the largest single CDQ device capacity. There are more than 200 CDQ devices under construction and in operation. [0003] The CDQ oven is the core part of the CDQ device, and the cooling section is mainly subjected to the impact and wear of high-temperature coke and the damage caused by the cooling of high-speed nitrogen gas flow. Therefore, for the refractory material ...

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): C04B35/66C04B35/185
CPCC04B35/185C04B35/66C04B2235/3217C04B2235/3229C04B2235/3418C04B2235/349C04B2235/40C04B2235/402C04B2235/77C04B2235/96C04B2235/9607
Inventor 董良军程平平李亚伟桑绍柏
Owner 宜兴市丁山耐火器材有限公司
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