Chromium-alumina-carbon bricks and preparation method therefor

A chrome-aluminum-carbon brick and high-chromium technology, applied in the field of chrome-aluminum-carbon bricks and their preparation, can solve the problems of reducing the thermal shock performance of high chrome bricks, achieve thermal shock resistance improvement, reduce porosity, normal temperature and high temperature Strong effect

Active Publication Date: 2016-05-04
洛阳利尔功能材料有限公司
View PDF4 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Theoretically, there are many ways to improve the thermal shock performance of refractory materials, such as enhancing the uniformity of materials and reducing internal defects. , can eff

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
  • Chromium-alumina-carbon bricks and preparation method therefor

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0029] Example 1

[0030] The composition of a new type of chromium-aluminum-carbon brick formula is:

[0031] 5~1 47 parts of fused high chromium sand particles

[0032] 1~0 18 parts of fused high chromium sand particles

[0033] 18 parts of fused high chromium sand powder

[0034] 8 parts of alumina powder

[0035] 1 part of metal aluminum powder

[0036] Zirconia powder: 3 parts

[0037] Graphite powder: 1 part

[0038] 4 parts chrome green

[0039] Add 2 parts of binding agent.

[0040] The preparation process of a new type of chrome-aluminum-carbon brick is:

[0041] 1. Ingredients: Weigh the ingredients according to the requirements of the formula;

[0042] 2. Pre-mixing: Add the weighed base fine powder into the vibrating ball mill for pre-mixing, and the mixing time is 30-60 min;

[0043] 3. Particle pre-wrapping: premix aggregate particles with a particle size of 1mm or more, then add resin or pulp waste liquid binder, mix well, add metal aluminum powder, and continue to mix evenly;

[0...

Example Embodiment

[0048] Example 2

[0049] The composition of a new type of chromium-aluminum-carbon brick formula is:

[0050] 5~1 45 parts of fused high chromium sand particles

[0051] 1~0 20 parts of fused high chromium sand particles

[0052] 18 parts of fused high chromium sand powder

[0053] 6 parts of alumina powder

[0054] 1 part of metal aluminum powder

[0055] Zirconia powder: 2 parts

[0056] Graphite powder: 2 parts

[0057] 6 parts of chrome green

[0058] Add 2 parts of binding agent.

[0059] The above-mentioned preparation process of the backing aluminum-chromium-silica brick for a coal-water slurry pressurized gasifier is the same as in Example 1.

Example Embodiment

[0060] Example 3

[0061] The composition of a new type of chromium-aluminum-carbon brick formula is:

[0062] 5~1 45 parts of fused high chromium sand particles

[0063] 1~0 20 parts of fused high chromium sand particles

[0064] 14 parts of fused high chromium sand powder

[0065] 10 parts of alumina powder

[0066] Metal aluminum powder 0.5 parts

[0067] Zirconia powder: 3 parts

[0068] Graphite powder: 1.5 parts

[0069] 6 parts of chrome green

[0070] Add 2 parts of binding agent.

[0071] The above-mentioned preparation process of the backing aluminum-chromium-silica brick for a coal-water slurry pressurized gasifier is the same as in Example 1.

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
Granularityaaaaaaaaaa
Login to view more

Abstract

The invention discloses chromium-alumina-carbon bricks and a preparation method therefor and relates to the chromium-alumina-carbon bricks. The chromium-alumina-carbon bricks are prepared from the following ingredients in percentage by mass: 75-90% of electric-melted high-chromium sand materials, of which the granularity of each is 5-0 mesh and 240 meshes, 3-8% of alpha-Al2O3 micropowder, 0.1-6% of zirconia micropowder, 0.1-3% of metal aluminum powder material, of which the granularity is smaller than 180 meshes, 0.1-3% of graphite powder, 3-8% of chrome oxide green and 2-4% of additional binder. The chromium-alumina-carbon bricks are prepared through the preparing steps of carrying out material proportioning, carrying out fine-powder premixing, carrying out granule pre-wrapping, carrying out mixing, carrying out molding, carrying out drying and carrying out burning. According to the chromium-alumina-carbon bricks and the preparation method therefor, the aims of greatly improving thermal shock resistance and prolonging service lives are achieved.

Description

【Technical field】 [0001] The invention relates to a chrome-aluminum carbon brick for a coal-water slurry pressurized gasifier, and relates to a chrome-aluminum carbon brick and a preparation method thereof. 【Background technique】 [0002] As we all know, most of the coal gasification technologies currently used in my country are the pressurized Texaco coal-water slurry gasification process with high efficiency and good gas composition and the multi-nozzle coal-water slurry pressurized gasification technology with independent intellectual property rights. ; The gasifier linings of these two gasification technologies are all chrome-aluminum-zirconium bricks, that is, high-chrome bricks. Now the industry has formed a consensus that the use of high chrome bricks lining the gasifier is a very important factor that determines the operating economy and reliability of the entire system. With the development of the coal chemical industry, the number of pressurized coal-water slurry g...

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): C04B35/66C04B35/047C04B35/65
CPCC04B35/0473C04B35/651C04B35/66C04B2235/3217C04B2235/3241C04B2235/3244C04B2235/402C04B2235/425C04B2235/96
Inventor 高耸李有奇张亚栋杨付乾张涛阎彬彬杨参张宇翠姚晨臣
Owner 洛阳利尔功能材料有限公司
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