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Ceramic welding materials for high temperature kiln and a method

A ceramic welding and kiln technology, which is applied in the field of high-temperature industrial kiln repair, can solve the problems of high implementation cost, large technical application limitations, and limited promotion and application of ceramic welding technology, and achieve wide application range, cost reduction, welding better effect

Active Publication Date: 2011-06-08
山西高科耐火材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Most of the above-mentioned patented technologies are researched and developed for a single material or part, and the technical application limitations are large, or the implementation cost is too high, and the promotion and application of ceramic welding technology is limited.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The roof of the glass kiln is partially damaged, and the siliceous ceramic welding material is used for ceramic welding repair. The material preparation method:

[0045] a. Basic material:

[0046] Specification Weight percentage

[0047] Fused silica particles 2mm-1mm 25%

[0048] 1mm-0.5mm 30%

[0049] 0.5mm-0.088mm 30%

[0050] Fused silica powder 325 mesh 15%

[0051] b. Metal combustibles and admixtures:

[0052] Specification Weight percentage compared with a

[0053] Metal silicon powder 325 mesh 4%

[0054] Metal aluminum powder 325 mesh 10%

[0055] NaCl 0.8%

[0056] Fully mix materials a and b to make silicon welding material, and spray the mixture to the area to be repaired with a suitable welding device and torch. The welding material is selected to be delivered by oxygen flow under positive pressure. The welding material shoots to the kiln roof. Under the action of oxygen and the temperature in the ...

Embodiment 2

[0058] The bottom of the ladle made of high-purity spinel is partially damaged, and the repair method:

[0059] a. Basic material:

[0060] Specification Weight percentage

[0061] Aluminum-rich fused spinel 2mm-1mm 25%

[0062] 1mm-0.5mm 30%

[0063] 0.5mm-0.088mm 30%

[0064] Aluminum-rich fused spinel powder 200 mesh / 325 mesh 7

[0065] Fused magnesium powder 200 mesh 2

[0066] Alumina powder D50≤4μm 6

[0067] b. Metal combustibles and admixtures:

[0068] Specification Weight percentage compared with a

[0069] Metal magnesium powder 325 mesh 8%

[0070] Metal aluminum powder 325 mesh 12%

[0071] CaCl 2 1.2%

[0072] Fully mix materials a and b to make spinel welding material, and spray the mixture to the area to be repaired with a suitable welding device and torch. The welding material is selected to be delivered by oxygen flow under positive pressure...

Embodiment 3

[0074] When the mullite brick furnace is partially damaged, the repair method:

[0075] a. Basic material:

[0076] Specification Weight percentage

[0077] Mullite aggregate 2mm-1mm 22%

[0078] 1mm-0.5mm 30%

[0079] 0.5mm-0.088mm 28%

[0080] Mullite 200 mesh 9

[0081] High-purity quartz powder 200 mesh 3

[0082] Alumina powder D50≤4μm 8

[0083] b. Metal combustibles and admixtures:

[0084] Specification Weight percentage compared with a

[0085] Metal silicon powder 325 mesh 8%

[0086] Metal aluminum powder 325 mesh 12%

[0087] CaCl 2 0.8%

[0088] Fully mix materials a and b to make silicon welding material, and spray the mixture to the area to be repaired with a suitable welding device and torch. Welding materials are selected to be transported by oxygen flow under positive pressure. The welding material is shot at the damaged part of the furnace. Under the action o...

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Abstract

The invention discloses a method and corresponding ceramic welding materials for restoring damaged high temperature industrial kiln by ceramic welding technology, and the method comprises the following steps of: selecting materials the same as or similar torefractory materials at the kiln damaged position as base materials; selectively adding metal inflammable microparticles accounting for 10% to18% by weight of the base materials, such as aluminium, magnesium, silicon, zirconium and the like, and selecting chloride accounting for no more than 2% by weight of the base materials as additive; after mixing well under conveying of oxygen jetting the prepared welding material to a position of the kiln to be repaired; reacting the inflammable microparticles with the oxygen to produce a high temperature to allow the refractory materials rapid softening and fusion; combining together very tightly the refractory materials at the position to be prepared and the welding material; fully filling holes, junctions and slits with fused substance; and continuously filling on the heat repairing surface to achieve the purpose of kiln restoration.

Description

technical field [0001] The invention belongs to the technical field of high-temperature industrial kiln restoration, and relates to a high-temperature kiln ceramic welding technology and a preparation method of corresponding materials. Background technique [0002] At present, various high-temperature industrial furnaces play a key role in industries and fields such as steel, glass, cement, and coking, and their applicability and durability largely restrict the development of enterprises. However, during the long-term use of various industrial kilns, local parts will be damaged to varying degrees and need to be repaired in time. The traditional method of stopping the kiln for cooling and repairing and then heating up will not only affect the production, but also cause great damage to the kiln, affecting the service life of the kiln and causing great economic losses. Therefore, the non-stop kiln hot kiln repair technology is very popular among high-temperature production ent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B37/00
Inventor 高峰王虹
Owner 山西高科耐火材料股份有限公司
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