Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Low-carbon aluminum silicon carbide carbon brick containing nanocarbon and preparation method thereof

A carbon-aluminum-silicon-carbide-carbon brick and nano-carbon technology is applied in the field of refractory materials, which can solve the problems of affecting the high temperature strength of the brick body, complicated use conditions, and increase the cost of raw materials, so as to reduce thermal conductivity, improve thermal shock resistance, The effect of improving the overall performance

Pending Publication Date: 2020-11-10
武汉钢铁有限公司
View PDF11 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the introduction of superfine silicon carbide increases the cost of raw materials for making bricks. At the same time, the addition of a large proportion of pyrophyllite will inevitably affect the high-temperature strength of the brick body, and its high-temperature corrosion resistance needs to be further verified. In addition, the cancellation of carbon raw materials, its resistance Erosion and penetration performance also needs to be verified in production applications
[0010] To sum up, it can be seen that domestic scholars aim at the adverse effects on the performance of conventional aluminum silicon carbide carbon bricks such as easy oxidation, high thermal conductivity, and sintering shrinkage, as well as the economic problems caused by high cost, through the research of new antioxidants, semi-light The application of high-quality materials, the compounding of raw material components, the development of low-carbon and low-cost technologies, etc., have formed the patented technology of aluminum silicon carbide carbon bricks with their own characteristics, and achieved a single index significantly improved under laboratory conditions. effect, but the actual production conditions are very complex. Whether the improvement of a single index can achieve the expected application effect needs to be verified in actual production. In addition, the uniform dispersion of carbon materials is the core key to achieve low carbonization. How to avoid carbon materials Agglomeration, especially the ultrafine powder of carbon raw materials, needs further research and exploration

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
  • Low-carbon aluminum silicon carbide carbon brick containing nanocarbon and preparation method thereof
  • Low-carbon aluminum silicon carbide carbon brick containing nanocarbon and preparation method thereof
  • Low-carbon aluminum silicon carbide carbon brick containing nanocarbon and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The raw materials of low-carbon aluminum silicon carbide carbon bricks containing nano-carbon include main raw materials and auxiliary raw materials, and the main raw materials include by weight percentage:

[0040]

[0041]

[0042] Auxiliary raw materials include organic binder, absolute alcohol, polyvinyl alcohol fiber and chopped carbon fiber. The weight of absolute alcohol accounts for 1% of the total weight of the main raw material, and the weight of organic binder accounts for 3% of the total weight of the main raw material. The weight accounts for 0.05% of the total weight of the main raw material, and the weight of chopped carbon fiber accounts for 0.2% of the total weight of the main raw material;

[0043] The preparation method comprises the following steps:

[0044] 1) The main raw materials are crushed, finely ground and screened according to the particle size requirements;

[0045] 2) The surfaces of two kinds of high-alumina bauxite clinker, two ki...

Embodiment 2

[0051] Except that the two kinds of high-alumina bauxite clinker and the brown corundum raw material with a particle size of 1-3 mm are not coated with nano-carbon film, the others are the same as in Example 1.

Embodiment 3

[0053] Except that the surfaces of the two kinds of high alumina bauxite clinker and the two kinds of brown corundum raw material particles are not coated with nano-carbon film, the others are 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
Thicknessaaaaaaaaaa
Granularityaaaaaaaaaa
Bulk densityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a nanocarbon-containing low-carbon aluminum silicon carbide carbon brick and a preparation method thereof. The brick comprises high bauxite clinker with two granularities, brown fused alumina with two granularities, sub-white fused alumina, dispersible nanocarbon and the like. Through the application of the nano-carbon film and the dispersible nano-carbon, which are none, partially or completely coated on the surfaces of particles of three raw materials, comprising high-alumina bauxite clinker, brown fused alumina and sub-white fused alumina; the oxidation resistance ofthe nano-carbon is improved by utilizing the characteristics that the nano-carbon film and the dispersible nano-carbon are mainly amorphous carbon, contain a small amount of graphite chicks, can be infiltrated by a solvent and the like; therefore, infiltration and adsorption of the nano carbon film and the dispersible nano carbon to the organic binding agent are improved, the uniform dispersion of the nano carbon in the magnesia carbon brick is realized; finally, the size of carbon particles in the aluminum silicon carbide carbon brick is greatly reduced through the size control of the thickness of the nano carbon film and the dispersible nano carbon, so that the contact frequency of the refractory raw material of the aluminum silicon carbide carbon brick and the carbon particles is obviously improved, and the performance of the carbon particles under the condition of low carbon content is ensured.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to a low-carbon aluminum silicon carbide carbon brick containing nano-carbon and a preparation method. Background technique [0002] The molten iron tank is responsible for the transportation of hot molten iron between the blast furnace ironmaking and converter steelmaking processes. Due to the intermittent smelting mode of the converter, the molten iron is required to be mixed in at intervals according to the production rhythm of the converter, resulting in the intermittent service conditions of the molten iron tank and the fire resistance after mixing iron. The material lining is rapidly cooled and oxidized by cold air and rapidly heated by high-temperature molten iron when exposed to iron. Therefore, the refractory lining of the molten iron tank not only has to withstand the large temperature difference thermal shock impact of rapid cooling of air and rapi...

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): C04B35/80C04B35/103
CPCC04B35/103C04B2235/3463C04B2235/3826C04B2235/422C04B2235/5212C04B2235/5248C04B2235/428C04B2235/40C04B2235/36C04B2235/77C04B2235/96C04B2235/9607
Inventor 欧阳德刚杨新泉沈继胜李慕耘朱万军罗巍杨枝超孙伟秦世民杨成威刘婳
Owner 武汉钢铁有限公司
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
Eureka Blog
Learn More
PatSnap group products