Unlock instant, AI-driven research and patent intelligence for your innovation.

Stable-performance alumina-chrome brick for zinc volatilization kiln and preparation method thereof

A technology of zinc volatilization and aluminum chrome bricks, which is applied in the field of aluminum chrome bricks, can solve problems such as refractory material erosion and affect production, and achieve the effects of improving thermal shock resistance, increasing service life, and creating benefits

Inactive Publication Date: 2021-11-26
郑州瑞泰耐火科技有限公司
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides an aluminum-chrome brick for zinc volatilization kiln with stable performance and its preparation method, which has the advantages of corrosion resistance, etc., and solves the problems of slag and matte under high temperature and reducing atmosphere. Penetration and mechanical erosion will cause erosion of refractory materials. In order to prolong the service life of the rotary kiln lining, many manufacturers have made improvements to refractory materials. At present, magnesia-chromium-aluminum bricks are mainly used, but the service life can only be maintained. 8-10 months, serious problems affecting actual production

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
  • Stable-performance alumina-chrome brick for zinc volatilization kiln and preparation method thereof
  • Stable-performance alumina-chrome brick for zinc volatilization kiln and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: An aluminum-chrome brick for a zinc volatilization kiln with stable performance, including the following raw materials in proportions by weight: 15% of large particles of fused white corundum of 3mm, 15% of medium particles of fused white corundum of 1mm, 0.001 mm fused white corundum small particles 7%, 0.001mm plate corundum fine powder 20%, 0.001mm fused chromium oxide small particles 4%, 0.001mm fused chromium oxide fine powder 4%, 0.001mm oxidized 20% of chrome green fine powder, 0.3% of South African andalusite fine powder of 0.001mm, 3% of active α-alumina fine powder of 3μm and 3% of composite binder of 1.15g / ml.

[0026] Among them, Al in fused white corundum 2 o 3 99.12%, NaO 0.21%, particle volume density 3.67g / cm3, tabular corundum Al 2 o 3 is 99.32%, NaO is 0.26%, particle volume density is 3.62g / cm3, Cr in fused chromium oxide 2 o 3 99.23%, Cr in chromium oxide green 2 o 3 99.23%, Al in andalusite 2 o 3 58.62%, SiO 2 39.21%, Al in α...

Embodiment 2

[0033] Embodiment 2: An aluminum-chrome brick for a zinc volatilization kiln with stable performance, including the following raw materials in proportion by weight: 25% of fused white corundum large particles of 5mm, 20% of fused white corundum particles of 3mm, 1mm Fused white corundum small particles 13%, 0.088mm tabular corundum fine powder 25%, 1mm fused chromium oxide small particles 6%, 0.088mm fused chromium oxide fine powder 6%, 0.045mm chromium oxide green 25% of fine powder, 0.7% of South African andalusite fine powder of 0.088mm, 5% of activated α-alumina fine powder of 3μm and 7% of composite binder of 1.15g / ml.

[0034] Among them, Al in fused white corundum 2 o 3 99.12%, NaO 0.21%, particle volume density 3.67g / cm3, tabular corundum Al 2 o 3 is 99.32%, NaO is 0.26%, particle volume density is 3.62g / cm3, Cr in fused chromium oxide 2 o 3 99.23%, Cr in chromium oxide green 2 o 3 99.23%, Al in andalusite 2 o 3 58.62%, SiO 2 39.21%, Al in α-activated alumina...

Embodiment 3

[0041] Embodiment 3: An aluminum-chrome brick for a zinc volatilization kiln with stable performance, including the following raw materials in proportions by weight: 20% of large particles of fused white corundum of 4mm, 18% of medium particles of fused white corundum of 2mm, 0.5 mm fused white corundum small particles 10%, 0.045mm plate-shaped corundum fine powder 23%, 0.5mm fused chromium oxide small particles 5%, 0.045mm fused chromium oxide fine powder 5%, 0.03mm oxidized 23% of chrome green fine powder, 0.5% of 0.045mm South African andalusite fine powder, 4% of 3μm activated α-alumina fine powder and 5% of 1.15g / ml composite binder.

[0042] Among them, Al in fused white corundum 2 o 3 99.12%, NaO 0.21%, particle volume density 3.67g / cm3, tabular corundum Al 2 o 3 is 99.32%, NaO is 0.26%, particle volume density is 3.62g / cm3, Cr in fused chromium oxide 2 o 3 99.23%, Cr in chromium oxide green 2 o 3 99.23%, Al in andalusite 2 o 3 58.62%, SiO 2 39.21%, Al in α-ac...

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
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to the technical field of alumina-chrome bricks, and discloses a stable-performance alumina-chrome brick for a zinc volatilization kiln. The brick comprises the following raw materials in percentage by weight: 15-25% of large fused white corundum particles, 15-20% of medium fused white corundum particles, 7-13% of small fused white corundum particles, 20-25% of tabular corundum fine powder, 4-6% of small fused chromic oxide particles, 4-6% of fused chromium oxide fine powder, 20-25% of chromium oxide green fine powder, 0.3-0.7% of South African andalusite fine powder, 3-5% of active alpha aluminum oxide micro powder and 3-7% of a composite binder. According to the stable-performance alumina-chrome brick for the zinc volatilization kiln and the preparation method of the stable-performance alumina-chrome brick, the South African andalusite fine powder is a common aluminosilicate mineral, belongs to a typical mineral caused by low-grade thermal metamorphism, is commonly seen in argillaceous rock in a metamorphic aureole, and is converted into a mullite phase at high temperature so that the thermal shock resistance of the material is improved; the addition of the electrically-smelted chromic oxide small particles and the electrically-smelted chromic oxide fine powder has decisive factors on the quality and slag corrosion resistance of refractory material products, and compared with magnesium-aluminum-chromium bricks, the brick has a higher content of chromic oxide.

Description

technical field [0001] The invention relates to the technical field of aluminum-chrome bricks, in particular to an aluminum-chrome brick for a zinc volatilization kiln with stable performance and a preparation method thereof. Background technique [0002] Aluminum-chrome bricks are mainly composed of corundum and chromium trioxide. They have less impurity content, stable high-temperature chemical properties, high melting point, high hardness and high strength. Most of them are made of aluminum-chromium slag, which is smelted by thermite method The composition of waste slag obtained from metal chromium fluctuates greatly, and aluminum chromium has good corrosion resistance and thermal shock resistance, but due to high impurity content, the softening temperature under load is low. [0003] Aluminum-chrome bricks are mainly made of metal zinc, which is one of the common non-ferrous metals in life and production. From the perspective of the consumption of zinc metal in the world...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/105
CPCC04B35/105C04B2235/3463C04B2235/5427C04B2235/5436C04B2235/602C04B2235/606C04B2235/656C04B2235/6567C04B2235/96
Inventor 王旭圆袁林李沅锦孟凌霄张慧芳王佳征高洪兴梁勤君韩波张亚权
Owner 郑州瑞泰耐火科技有限公司