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
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  • 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 columna

Method used

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  • 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
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Example Embodiment

[0034] Example 1:

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

[0036] (1) the preparation method of described bauxite granulation material is: first, second-grade bauxite clinker particles, second-grade bauxite raw meal powder, chromite powder, yttrium oxide powder and silica sol are by mass ratio 65:35: 6:8:20 The ingredients are mixed evenly and pressed into a green body under a pressure of 30-50MPa; then the green body is dried at 100-140 ℃ for 24 hours; finally, the dried green body is broken into pellets smaller than 5 mm , that is, to obtain bauxite granules.

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

[0038]

[0039] (3) batching is carried out according to the above-mentioned raw materials and their contents, first grade three bauxite raw meal powder, pyrophyllite fine powder, SiO 2 Micro powder, α-Al 2 O 3 Micro powder, CeO 2 Micropowder, Al-Zn alloy powder a...

Example Embodiment

[0041] Example 2:

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

[0043] (1) the preparation method of described bauxite granulation material is: first, second-grade bauxite clinker particles, second-grade bauxite raw meal powder, chromite powder, yttrium oxide powder and silica sol are by mass ratio 65:35: 4:2:10 ingredients, mixed evenly and pressed into a green body under a pressure of 30-50MPa; then the green body was dried at 100-140 ℃ for 24 hours; finally, the dried green body was broken into pellets smaller than 5 mm , that is, to obtain bauxite granules.

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

[0045]

[0046] (3) batching is carried out according to the above-mentioned raw materials and their contents, first grade three bauxite raw meal powder, pyrophyllite fine powder, SiO 2 Micro powder, α-Al 2 O 3 Micro powder, CeO 2 Micropowder, Al-Zn alloy powder and po...

Example Embodiment

[0048] Example 3

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

[0050] (1) the preparation method of described bauxite granulation material is: first, second-grade bauxite clinker particles, second-grade bauxite raw meal powder, chromite powder, yttrium oxide powder and silica sol are by mass ratio 65:35: (4~5): (2~4): (10~16) Ingredients, mixed uniformly and pressed into a green body under a pressure of 30~50MPa; then the green body was dried at 100-140 ℃ for 24 hours; After the green body is broken into pellets smaller than 5 mm, the alumina pellets are obtained.

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

[0052]

[0053] (3) batching is carried out according to the above-mentioned raw materials and their contents, first grade three bauxite raw meal powder, pyrophyllite fine powder, SiO 2 Micro powder, α-Al 2 O 3 Micro powder, CeO 2 Micropowder, Al-Zn alloy powder and...

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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

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Application Information

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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
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