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a lip brick

A lip brick and particle size technology, applied in the field of refractory materials, can solve the problems of short service life, thermal shock stability and corrosion resistance to be improved, etc.

Active Publication Date: 2016-07-06
浙江荣星新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The lip bricks currently used in the market have a short service life, and their thermal shock stability and corrosion resistance need to be improved

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A kind of lip brick that the present invention proposes, comprises the component of following percentage by weight:

[0018]

[0019] Described mixture comprises the following components by weight percentage:

[0020] Phosphoric acid or phosphate 25%

[0021] Boric anhydride 20%

[0022] α-Al 2 o 3 Micronized Al 2 o 3 Specific gravity ≥ 99.6%, true specific gravity ≥ 3.95 g / cm3

[0023]

[0024] The lip bricks adopt vacuum mixing and vacuum grouting; they are fired in a high-temperature tunnel kiln at a firing temperature of 1600°C, and the lip bricks are dried using waste heat in the high-temperature tunnel kiln when cooling.

Embodiment 2

[0026] A kind of lip brick that the present invention proposes, comprises the component of following percentage by weight:

[0027]

[0028]

[0029] Described mixture comprises the following components by weight percentage:

[0030] Phosphoric acid or phosphate 45%

[0031] Boric anhydride 10%

[0032] α-Al 2 o 3 Micronized Al 2 o 3 Specific gravity ≥ 99.6%, true specific gravity ≥ 3.95 g / cm3

[0033]

[0034] The lip brick adopts vacuum mixing and vacuum grouting; it is fired in a high-temperature tunnel kiln at a firing temperature of 1650°C, and the lip brick is dried using the waste heat in the high-temperature tunnel kiln when cooling.

Embodiment 3

[0036] A kind of lip brick that the present invention proposes, comprises the component of following percentage by weight:

[0037]

[0038] Described mixture comprises the following components by weight percentage:

[0039] Phosphoric acid or phosphate 26.99%

[0040] Boric anhydride 12%

[0041] α-Al 2 o 3 Micronized Al 2 o 3 Specific gravity ≥ 99.6%, true specific gravity ≥ 3.95 g / cm3

[0042]

[0043] The lip brick adopts vacuum mixing and vacuum grouting; it is fired in a high-temperature tunnel kiln at a firing temperature of 1500°C, and the lip brick is dried using the waste heat in the high-temperature tunnel kiln when cooling.

[0044]

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Abstract

The invention discloses a lip brick, which mainly comprises the following components: 35-45% of tabular corundum, 25-35% of alumina, 10-20% of zircon sand, and 15-20% of a mixture; the mixture includes: Phosphoric acid or phosphate 25-45%, boron anhydride 10-20%, α-Al 2 o 3 Micro powder 40-55%, calcium compound 2-5%, nano-carbon 0.01-0.1%, dolomite 0.2-1%. The invention reduces the porosity of the traditional lip brick, improves its thermal shock stability and corrosion resistance, and prolongs the service life of the lip brick.

Description

technical field [0001] The invention relates to the technical field of refractory materials, in particular to a lip brick. Background technique [0002] Lip brick is one of the key equipment in glass production. When there is a problem with the lip brick, it will cause defects such as hidden lines, bubbles, and flow lines in the glass. The quality of the lip brick directly determines the yield rate and product quality of glass products. Therefore, the lip brick The choice of bricks is very important. When choosing lip bricks, you should refer to the following criteria: 1. Low porosity. Lip bricks with low porosity will not leak a lot of air bubbles when in contact with glass liquid, which can shorten the firing time; 2. Good thermal shock stability , Good thermal shock stability can reduce the probability of cracking and prolong the service life of lip bricks; 3. Strong corrosion resistance to glass liquid, avoiding glass knots caused by the analysis of lip brick components...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66
Inventor 曹林慧董苏荣
Owner 浙江荣星新材料科技有限公司