CN102303976A - Zircon hearth prefabricated part for heating furnace and preparation method thereof - Google Patents
Zircon hearth prefabricated part for heating furnace and preparation method thereof Download PDFInfo
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- CN102303976A CN102303976A CN201110235653A CN201110235653A CN102303976A CN 102303976 A CN102303976 A CN 102303976A CN 201110235653 A CN201110235653 A CN 201110235653A CN 201110235653 A CN201110235653 A CN 201110235653A CN 102303976 A CN102303976 A CN 102303976A
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Abstract
The invention relates to a prefabricated part for a heating furnace, particularly a zircon hearth prefabricated part for a heating furnace and a preparation method thereof. The prefabricated part is sequentially prepared by material proportioning, molding and firing. The prefabricated part is characterized by comprising the following raw materials in percentage by mass: 22-27% of superfine bauxite chamotte, 35-40% of zircon mullite particle, 13-16% of tabular corundum, 6-8% of activated alumina micropowder, 5-7% of pure calcium aluminate cement, 10-13% of zircon powder and 0.5-0.7% of polycarboxylate water reducing agent. Compared with the chromium hearth prefabricated part in the prior art, the zircon hearth prefabricated part provided by the invention has favorable thermal shock resistance, slag resistance and wear resistance, and the slag generated in the use process can be easily cleared, thereby greatly lowering the labor intensity of workers. Besides, the service life of the prefabricated part is synchronous with that of the heating furnace, thereby enhancing the economic benefit.
Description
Technical field
The present invention relates to a kind of process furnace and use prefab, be specifically related to a kind of process furnace zirconium matter furnace bottom prefab and preparation method thereof.
Background technology
In present walking beam furnace, adopt chromium matter prefab mostly, temperature is generally 1300～1400 ℃ in the stove, in use; Because under hot conditions; Chromium can and iron react, so chromium matter prefab usually dry slag can occur, caking phenomenon is more serious; And the slag that forms is very solid, and cleaning is got up very difficult.These have increased working strength of workers greatly, waste time and energy.
Summary of the invention
The purpose of this invention is to provide a kind of process furnace zirconium matter furnace bottom prefab and preparation method thereof, utilize zirconium discord iron reaction properties, can have slag corrosion resistance preferably,, also can be easy to clear up even if form slag.
Process furnace zirconium matter furnace bottom prefab of the present invention; Pass through batching, moulding successively, burn till and process; Batching is according to the mass percent meter; Formed by following preparation of raw material: special grade bauxite grog 22～27%, zirconium mullite particle 35～40%, plate diamond spar 13～16%, activated alumina micro mist 6～8%, pure calcium aluminate cement 5～7% and zirconium English powder 10～13% add polycarboxylate dehydragent 0.5～0.7%.
Wherein, the particle diameter of special grade bauxite grog is preferably 3～8mm; The zirconium mullite particle grain size is preferably 0.076～3mm; The particle diameter of plate diamond spar is preferred≤0.044mm; The particle diameter of activated alumina micro mist is preferred≤1 μ m; The particle diameter of zirconium English powder is preferred≤0.044mm.
Required water consumption when polycarboxylate dehydragent can reduce batch mixing, and improve the intensity of prefab.
The preparation method of process furnace zirconium matter furnace bottom prefab of the present invention may further comprise the steps:
(1) batching: raw material is put into forced mixer, add the water of raw material total mass 5～6%, stirred 20～25 rev/mins of rotating speeds 5～10 minutes;
(2) moulding: the material that mixes is poured in the model, and model is placed on the shaking table vibration voluntarily, vibrates 10～15 minutes, and the slip that of will shaking is floating;
(3) burn till: get final product the demoulding after the mould material final set, seasoning 5～6 days, loading of kiln is pressed heating curve and is heated up, and behind insulation 12h after 800 ℃, ceases fire.
The invention has the advantages that the zirconium matter furnace bottom prefab for preparing compares with chromium matter furnace bottom prefab of the prior art; Have good heat-shock resistance, slag resistance, wear resistance; The slag that produces in the use can be easy to cleaning; Significantly reduced working strength of workers, and this prefab work-ing life and process furnace are synchronous, have improved economic benefit.
Description of drawings
Fig. 1 is heating curve figure of the present invention.
Embodiment
Below in conjunction with embodiment the present invention is further specified.
Embodiment 1:
According to the mass percent meter, choose following raw material: special grade bauxite grog 23%, zirconium mullite particle 38%, plate diamond spar 16%, activated alumina micro mist 7%, pure calcium aluminate cement 6% and zirconium English powder 10% add polycarboxylate dehydragent 0.7%.
Wherein, the particle diameter of special grade bauxite grog is 3～8mm; The zirconium mullite particle grain size is 0.076～3mm; The particle diameter of plate diamond spar is≤0.044mm; The particle diameter of activated alumina micro mist is≤1 μ m; The particle diameter of zirconium English powder is≤0.044mm.
Raw material is put into forced mixer, add the water of raw material total mass 5%, stirred 7 minutes, stirred 5 minutes.The material that mixes is poured in the model, and model is placed on the shaking table vibration voluntarily, vibrates 10 minutes, and the slip that of will shaking is floating.Get final product the demoulding after the mould material final set, seasoning 5 days, loading of kiln is pressed heating curve and is heated up, and behind insulation 12h after 800 ℃, ceases fire.
Embodiment 2:
According to the mass percent meter, choose following raw material: special grade bauxite grog 24%, zirconium mullite particle 37%, plate diamond spar 15%, activated alumina micro mist 6%, pure calcium aluminate cement 7% and zirconium English powder 11% add polycarboxylate dehydragent 0.6%.
Wherein, the particle diameter of special grade bauxite grog is 3～8mm; The zirconium mullite particle grain size is 0.076～3mm; The particle diameter of plate diamond spar is≤0.044mm; The particle diameter of activated alumina micro mist is≤1 μ m; The particle diameter of zirconium English powder is≤0.044mm.
Raw material is put into forced mixer, add the water of raw material total mass 6%, stirred 5 minutes, stirred 8 minutes.The material that mixes is poured in the model, and model is placed on the shaking table vibration voluntarily, vibrates 10 minutes, and the slip that of will shaking is floating.Get final product the demoulding after the mould material final set, seasoning 5 days, loading of kiln is pressed heating curve and is heated up, and behind insulation 12h after 800 ℃, ceases fire.
Embodiment 3:
According to the mass percent meter, choose following raw material: special grade bauxite grog 25%, zirconium mullite particle 36%, plate diamond spar 14%, activated alumina micro mist 7%, pure calcium aluminate cement 7% and zirconium English powder 11% add polycarboxylate dehydragent 0.5%.
Wherein, the particle diameter of special grade bauxite grog is 3～8mm; The zirconium mullite particle grain size is 0.076～3mm; The particle diameter of plate diamond spar is≤0.044mm; The particle diameter of activated alumina micro mist is≤1 μ m; The particle diameter of zirconium English powder is≤0.044mm.
Raw material is put into forced mixer, add the water of raw material total mass 6%, stirred 10 minutes, stirred 10 minutes.The material that mixes is poured in the model, and model is placed on the shaking table vibration voluntarily, vibrates 15 minutes, and the slip that of will shaking is floating.Get final product the demoulding after the mould material final set, seasoning 6 days, loading of kiln is pressed heating curve and is heated up, and behind insulation 12h after 800 ℃, ceases fire.
Below be compressive strength and the folding strength index of embodiment 1～3:
Claims (7)
1. process furnace zirconium matter furnace bottom prefab; Pass through batching, moulding successively, burn till and process; It is characterized in that batching is according to the mass percent meter; Formed by following preparation of raw material: special grade bauxite grog 22～27%, zirconium mullite particle 35～40%, plate diamond spar 13～16%, activated alumina micro mist 6～8%, pure calcium aluminate cement 5～7% and zirconium English powder 10～13% add polycarboxylate dehydragent 0.5～0.7%.
2. process furnace zirconium matter furnace bottom prefab according to claim 1, the particle diameter that it is characterized in that the special grade bauxite grog is 3～8mm.
3. process furnace zirconium matter furnace bottom prefab according to claim 1 is characterized in that the zirconium mullite particle grain size is 0.076～3mm.
4. process furnace zirconium matter furnace bottom prefab according to claim 1 is characterized in that the particle diameter≤0.044mm of plate diamond spar.
5. process furnace zirconium matter furnace bottom prefab according to claim 1 is characterized in that the particle diameter≤1 μ m of activated alumina micro mist.
6. process furnace zirconium matter furnace bottom prefab according to claim 1 is characterized in that the particle diameter≤0.044mm of zirconium English powder.
7. the preparation method of the described process furnace zirconium of claim 1 a matter furnace bottom prefab is characterized in that may further comprise the steps:
(1) batching: raw material is put into forced mixer, add the water of raw material total mass 5～6%, stirred 20～25 rev/mins of rotating speeds 5～10 minutes;
(2) moulding: the material that mixes is poured in the model, and model is placed on the shaking table vibration voluntarily, vibrates 10～15 minutes, and the slip that of will shaking is floating;
(3) burn till: get final product the demoulding after the mould material final set, seasoning 5～6 days, loading of kiln is pressed heating curve and is heated up, and behind insulation 12h after 800 ℃, ceases fire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201110235653 CN102303976B (en) | 2011-08-17 | 2011-08-17 | Zircon hearth prefabricated part for heating furnace and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110235653 CN102303976B (en) | 2011-08-17 | 2011-08-17 | Zircon hearth prefabricated part for heating furnace and preparation method thereof |
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| CN102303976A true CN102303976A (en) | 2012-01-04 |
| CN102303976B CN102303976B (en) | 2012-12-26 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102765947A (en) * | 2012-07-10 | 2012-11-07 | 浙江康星耐火材料有限公司 | Lip tile |
| CN104557080A (en) * | 2014-12-12 | 2015-04-29 | 长兴优联马科技有限公司 | Segmented type wear resistant layer for iron runner |
| CN110642633A (en) * | 2019-10-30 | 2020-01-03 | 浙江自立高温科技股份有限公司 | Carbon-free pouring nozzle of steel ladle and preparation method thereof |
| CN111829338A (en) * | 2020-07-18 | 2020-10-27 | 山东鲁铭高温材料股份有限公司 | Amorphous refractory material for lithium salt rotary kiln |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1108631A (en) * | 1995-01-24 | 1995-09-20 | 中国建筑材料科学研究院 | Fire-retardant concrete for porcelain tunnel kiln wall and prefabricated component thereof |
| CN101172873A (en) * | 2007-09-30 | 2008-05-07 | 河南省耕生耐火材料有限公司 | Aluminum chromium zirconia fire resistive material for producing abrasion-proof prefabricated component |
| CN101550019A (en) * | 2009-05-25 | 2009-10-07 | 巩义市金岭耐火材料有限公司 | Composite fire resistant ball for ball type hot-air stove and method for preparing same |
| CN101805197A (en) * | 2010-04-22 | 2010-08-18 | 上海海事大学 | Production method of corundum-mullite-zirconia |
-
2011
- 2011-08-17 CN CN 201110235653 patent/CN102303976B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1108631A (en) * | 1995-01-24 | 1995-09-20 | 中国建筑材料科学研究院 | Fire-retardant concrete for porcelain tunnel kiln wall and prefabricated component thereof |
| CN101172873A (en) * | 2007-09-30 | 2008-05-07 | 河南省耕生耐火材料有限公司 | Aluminum chromium zirconia fire resistive material for producing abrasion-proof prefabricated component |
| CN101550019A (en) * | 2009-05-25 | 2009-10-07 | 巩义市金岭耐火材料有限公司 | Composite fire resistant ball for ball type hot-air stove and method for preparing same |
| CN101805197A (en) * | 2010-04-22 | 2010-08-18 | 上海海事大学 | Production method of corundum-mullite-zirconia |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102765947A (en) * | 2012-07-10 | 2012-11-07 | 浙江康星耐火材料有限公司 | Lip tile |
| CN104557080A (en) * | 2014-12-12 | 2015-04-29 | 长兴优联马科技有限公司 | Segmented type wear resistant layer for iron runner |
| CN110642633A (en) * | 2019-10-30 | 2020-01-03 | 浙江自立高温科技股份有限公司 | Carbon-free pouring nozzle of steel ladle and preparation method thereof |
| CN111829338A (en) * | 2020-07-18 | 2020-10-27 | 山东鲁铭高温材料股份有限公司 | Amorphous refractory material for lithium salt rotary kiln |
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| Publication number | Publication date |
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| CN102303976B (en) | 2012-12-26 |
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Address after: Wang Zhoucun towns Xi Yang Xi village 255300 Shandong city of Zibo province No. 1688 Patentee after: Shandong Lu Ming high temperature materials Limited by Share Ltd Address before: 255034 Li Industrial Park, Zhoucun District, Shandong, Zibo Patentee before: Shandong Luming High-temperature Material Technology Co., Ltd. |
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Granted publication date: 20121226 Termination date: 20180817 |