A kind of alkali-resistant brick and preparation method thereof

An alkali-resistant brick and waste technology, applied in the field of refractory materials, can solve the problems of performance defects, lack of raw material and mineral resources, etc.

Active Publication Date: 2017-09-29
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 micropowder 5wt%, china clay 15wt%; said B component includes A component 5wt% concentration 5wt% PVA aqueous solution. The alumina content in the waste high voltage electric porcelain is 35wt%; the alumina content in the primary bauxite powder is 80wt%; the alumina content in the china clay is 30wt%; the alumina content in the alkali-resistant brick 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 dens...

Embodiment 2

[0036] An alkali-resistant brick, comprising A component and B component; the A component is composed of the following raw material components in proportion by weight: 45wt% of 1-3mm waste high-voltage electric porcelain, 23wt% of 0.088-1mm waste high-voltage electric porcelain , <0.088mm waste high voltage electric porcelain 21wt%, first grade high bauxite micropowder 5wt%, china clay 6wt%; said B component includes A component 4wt% sulfurous acid pulp waste liquor. 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 alumina content 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 refractor...

Embodiment 3

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

[0042] After testing, the ...

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Abstract

The invention relates to an alkali-resistant brick and a preparation method thereof. The alkali-resistant brick includes component A and component B; the component A is composed of raw material components comprising the following weight percentages: 1-3mm waste high-voltage electric porcelain 30‑45wt%, 0.088‑1mm waste high voltage electric porcelain 15‑30wt%, <0.088mm waste high voltage electric porcelain 10‑30wt%, bauxite powder 0‑8wt%, china clay 5‑25wt%; the B component includes the A component 4‑8wt% organic binder by weight. The alkali-resistant brick of the present invention uses waste high-voltage electric porcelain instead of clay clinker as the main raw material, has excellent high temperature resistance, alkali corrosion resistance, thermal shock resistance, wear resistance and low thermal conductivity, and can be widely used in new dry process cement production lines The service life of kiln tail preheater, calciner and third branch pipe is significantly extended.

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 largest cement producer in the world. 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 alk...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
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