Alkali resistant brick and preparation method

A technology of alkali-resistant bricks and waste, which is applied in the field of refractory materials and can solve problems such as lack of raw material mineral resources and performance defects

Active Publication Date: 2012-12-19
ANHUI RUITAI NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In summary, the existing alkali-resistant bricks have defects in performance, and the raw material mineral resources are increasingly scarce, so it is urgent to develop resource substitution technology to develop a new type of silica-alumina alkali-resistant bricks

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] An alkali-resistant brick, including A component and B component; the A component is composed of raw material components including the following weight percentages: 35wt% of 1-3mm waste high-voltage electric porcelain, 30wt% of 0.088-1mm waste high-voltage electric porcelain , <0.088mm waste high-voltage electric porcelain 15wt%, first-grade high-bauxite fine powder 5wt%, china clay 15wt%; the B component includes a 5wt% PVA aqueous solution with a concentration of 5wt% by weight of the A component. The content of alumina in the waste high voltage electric porcelain is 35wt%; the content of alumina in the first-grade bauxite powder is 80wt%; the content of alumina in the china clay is 30wt%; The content is 36.5wt%.

[0033] According to the conventional brick-making process, the raw materials in the above formula are batched, mixed, pressed, and dried, and then sintered at 1280 ° C for 10 hours to obtain refractory bricks.

[0034] After testing, the bulk density of th...

Embodiment 2

[0036] An alkali-resistant brick, including A component and B component; the A component is composed of raw material components including the following weight percentage ratio: 1-3mm waste high voltage electric porcelain 45wt%, 0.088-1mm waste high voltage electric porcelain 23wt% , <0.088mm waste high voltage electric porcelain 21wt%, first-grade high-alumina bauxite powder 5wt%, china clay 6wt%; the B component includes A component 4wt% sulfurous acid pulp waste liquid. The content of alumina in the waste high-voltage electric porcelain is 42wt%; the content of alumina in the first-grade bauxite powder is 80wt%; the content of alumina in the china clay is 30wt%; the content of alumina in the alkali-resistant brick The content is 37.6wt%.

[0037] According to the conventional brick-making process, the raw materials in the above formula are batched, mixed, pressed, and dried, and then sintered at 1340 ° C for 8 hours to obtain refractory bricks.

[0038] After testing, the r...

Embodiment 3

[0040] An alkali-resistant brick, including A component and B component; the A component is composed of raw material components including the following weight percentage ratio: 1-3mm waste high-voltage electric porcelain 35wt%, 0.088-1mm waste high-voltage electric porcelain 25wt% , <0.088mm waste high voltage electric porcelain 13wt%, first-grade high-alumina bauxite powder 2wt%, china clay 25wt%; the B component includes a 3wt% CMC aqueous solution with a concentration of 8wt% by weight of the A component. The content of alumina in the waste high voltage electric porcelain is 55wt%; the content of alumina in the first-grade bauxite powder is 80wt%; the content of alumina in the china clay is 25wt%; the content of alumina in the alkali-resistant brick The content is 46.56wt%.

[0041] According to the conventional brick-making process, the raw materials in the above formula are batched, mixed, pressed, and dried, and then sintered at 1320 ° C for 8 hours to obtain refractory ...

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PUM

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Abstract

The invention relates to an alkali resistant brick and a preparation method, the alkali resistant brick comprises a component A and a component B; the component A comprises the following raw materials by weight: 30-45wt% of 1-3mm waste and old high-voltage electric porcelain, 15-30wt% of 0.088-1mm waste and old high-voltage electric porcelain, 10-30wt% of less than 0.088mm of waste and old high-voltage electric porcelain, 0-8wt% of alumina micro powder, 5-25wt% of porcelain clay; and the component B comprises 4-8wt% of organic binding agent. The alkali resistant brick employs the waste and old high-voltage electric porcelain as a main material for replacing calcined clay, and has excellent high temperature resistance, alkali erosion resistance, thermal shock resistance, wear resistance and low heat conduction performance, can widely used in a kiln end pre-heater, a decomposing furnace and three branched passage parts, and the service life is substantially prolonged.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and relates to a silicon-aluminum refractory material, in particular to an alkali-resistant brick and a preparation method thereof. Background technique [0002] my country is the world's largest cement producer. In 2011, my country's cement output reached 2 billion tons, accounting for about 60% of the world's total cement production. The new dry process cement production technology has also been rapidly promoted. my country's cement industry generally reflects The average level of cement manufacturing in the world. At present, alkali-resistant bricks are mainly used in the kiln tail preheater, calciner and tertiary piping parts of my country's cement production line. [0003] Alkali-resistant bricks are usually made of high-silicon clay clinker, high-silicon refractory clay and soft refractory clay with good bonding. According to existing standards, the alumina content of alkali-r...

Claims

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Application Information

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IPC IPC(8): C04B35/66C04B35/00
Inventor张金龙李存弼周键汪雷董舜杰
OwnerANHUI RUITAI NEW MATERIALS TECH