CN105439572A - High corundum furnace tube - Google Patents
High corundum furnace tube Download PDFInfo
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- CN105439572A CN105439572A CN201510720692.1A CN201510720692A CN105439572A CN 105439572 A CN105439572 A CN 105439572A CN 201510720692 A CN201510720692 A CN 201510720692A CN 105439572 A CN105439572 A CN 105439572A
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- furnace tube
- meshes
- orders
- boiler tube
- white corundum
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Abstract
The present invention relates to fireproof materials, in particular to a high corundum furnace tube. The furnace tube is sintered by 90%-95% of white corundum, 2%-7% of kaolin clay and 2%-4% of alumina powder at a high temperature; the white corundum is mixed by particles prepared from a liquid which is smelted by the alumina powder at the high-temperature of 2200 DEG C; and the specification of particles comprises 12 meshes, 24 meshes, 46 meshes, 70 meshes, 120 meshes and 320 meshes. By adopting the technical scheme, by using white corundum particles of different thicknesses to be mixed, the white corundum content is increased, and the internal stress of the furnace tube generated by expansion or contraction of the furnace tube materials in heating or cooling processes is alleviated; and the explosion probability of the furnace tube is reduced, and the service life of the furnace tube is prolonged.
Description
Technical field
The present invention relates to refractory materials, particularly relate to a kind of high corundum furnace tube.
Background technology
The purposes of boiler tube is the liner as various testing furnace, mainly by Heating element with is burnt try that material separates, closed heating region and place to be burnt and try material.Boiler tube has wide range of applications, relate to every profession and trade high temperature test analysis Instrument equipment as: coal analysis of experiments plant and instrument, metallurgy powder analysis of experiments plant and instrument, change glass industry analysis of experiments plant and instrument etc.Current boiler tube many employings stainless steel on the market, but this kind of boiler tube non-refractory, easy thawing, there is the boiler tube of corundum material on the market for this reason, but generally only contain the white fused alumina of about 80%, high temperature resistant limitation, and the fineness of white fused alumina is more even, cause the wear-resisting of boiler tube and compactness all poor, have a strong impact on work-ing life.
Summary of the invention
In order to solve above-mentioned technical problem, the object of this invention is to provide a kind of high corundum furnace tube, this boiler tube is high temperature resistant, and rub proofness is high, and compactness is good, long service life.
To achieve these goals, present invention employs following technical scheme:
A kind of high corundum furnace tube; this boiler tube is formed by the aluminum oxide powder high temperature sintering of the white fused alumina of 90%-95%, the kaolin of 2%-7% and 2%-4%; and the particle that white fused alumina is made up at the liquid that the high melt of 2200 DEG C is formed of aluminum oxide powder mixes, the specification of described particle comprises 12 orders, 24 orders, 46 orders, 70 orders, 120 orders and 320 orders.
Adopt the diamantane particle mixing of different thicknesses degree, coarse grained rub proofness is good, and fine grain compactness is high, can make after Homogeneous phase mixing the wear resisting property of blank and compactness more balanced.
The present invention adopts technique scheme; by adopting the white fused alumina particle mixing of different thicknesses degree; improve the content of white fused alumina, alleviate boiler tube in the internal stress heated up or owing to producing when furnace tube material expands or shrink in temperature-fall period, reduce boiler tube and burst probability and extend boiler tube work-ing life.
Embodiment
Embodiment 1
A kind of high corundum furnace tube, is produced by following steps: (1) mixes: the white fused alumina of 92% and the clay of 5% are uniformly mixed, and in whipping process, add the aluminum oxide powder formation stock of 3%; The particle of the different thicknesses degree that described white fused alumina is made up at the liquid that the high melt of 2200 DEG C is formed of aluminum oxide powder mixes, and the specification of described particle has 12 orders, 24 orders, 46 orders, 70 orders, 120 orders and 320 orders, and described clay adopts kaolin.(2) roll: the stock of above-mentioned formation is placed on stamping machine and rolls; (3) ramming process: adopt manual, pneumatic or electronic beater by shaping for blank tamping, ramming process layered feeds in raw material, blank moisture is large to be controlled in the scope of 5%, and the critical particle degree of blank is than large during mechanical pressing; (4) dry: above-mentioned shaping boiler tube to be put into ventilation, seasoning 24 hours; (5) high temperature sintering: the above-mentioned boiler tube through super-dry is vertically put into calcining furnace and sinters, sintering temperature is 1700 DEG C.
The boiler tube produced through above-mentioned steps improves work-ing life greatly, be the twice in common boiler tube work-ing life, and the rub proofness of this boiler tube and mortality is also higher than common boiler tube about 30%.
Embodiment 2
A kind of high corundum furnace tube, is produced by following steps: (1) mixes: the white fused alumina of 90% and the clay of 2% are uniformly mixed, and in whipping process, add the aluminum oxide powder formation stock of 8%; The particle of the different thicknesses degree that described white fused alumina is made up at the liquid that the high melt of 2200 DEG C is formed of aluminum oxide powder mixes, and the specification of described particle has 12 orders, 24 orders, 46 orders, 70 orders, 120 orders and 320 orders, and described clay adopts kaolin.(2) roll: the stock of above-mentioned formation is placed on stamping machine and rolls; (3) ramming process: adopt manual, pneumatic or electronic beater by shaping for pug tamping, ramming process layered feeds in raw material, blank moisture is large to be controlled in the scope of 6%, and the critical particle degree of blank is than large during mechanical pressing; (4) dry: above-mentioned shaping boiler tube to be put into ventilation, seasoning 48 hours; (5) high temperature sintering: the above-mentioned boiler tube through super-dry is vertically put into calcining furnace and sinters, sintering temperature is 1700 DEG C.
The boiler tube produced through above-mentioned steps improves work-ing life greatly, be the twice in common boiler tube work-ing life, and the rub proofness of this boiler tube and mortality is also higher than common boiler tube about 20%.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize specification sheets of the present invention to do equivalent structure or the conversion of equivalent flow process, or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (1)
1. a high corundum furnace tube; it is characterized in that: this boiler tube is formed by the aluminum oxide powder high temperature sintering of the white fused alumina of 90%-95%, the kaolin of 2%-7% and 2%-4%; and the particle that white fused alumina is made up at the liquid that the high melt of 2200 DEG C is formed of aluminum oxide powder mixes, the specification of described particle comprises 12 orders, 24 orders, 46 orders, 70 orders, 120 orders and 320 orders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510720692.1A CN105439572A (en) | 2015-10-30 | 2015-10-30 | High corundum furnace tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510720692.1A CN105439572A (en) | 2015-10-30 | 2015-10-30 | High corundum furnace tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105439572A true CN105439572A (en) | 2016-03-30 |
Family
ID=55550278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510720692.1A Pending CN105439572A (en) | 2015-10-30 | 2015-10-30 | High corundum furnace tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105439572A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110615673A (en) * | 2019-10-24 | 2019-12-27 | 郑州利晟保温材料有限公司 | Corundum furnace tube preparation method |
| CN114917918A (en) * | 2022-06-21 | 2022-08-19 | 临沭县华盛化工有限公司 | Special iron-molybdenum catalyst in hydrocyanic acid production process and preparation method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004071994A1 (en) * | 2003-02-07 | 2004-08-26 | Allied Mineral Products, Inc. | Application for united states letters patent for crack-resistant insulating dry refractory |
| CN104944930A (en) * | 2015-06-11 | 2015-09-30 | 濮阳市正淳特种陶瓷有限公司 | Refractory sagger and preparation method thereof |
-
2015
- 2015-10-30 CN CN201510720692.1A patent/CN105439572A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004071994A1 (en) * | 2003-02-07 | 2004-08-26 | Allied Mineral Products, Inc. | Application for united states letters patent for crack-resistant insulating dry refractory |
| CN104944930A (en) * | 2015-06-11 | 2015-09-30 | 濮阳市正淳特种陶瓷有限公司 | Refractory sagger and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110615673A (en) * | 2019-10-24 | 2019-12-27 | 郑州利晟保温材料有限公司 | Corundum furnace tube preparation method |
| CN110615673B (en) * | 2019-10-24 | 2022-04-19 | 郑州利晟保温材料有限公司 | Corundum furnace tube preparation method |
| CN114917918A (en) * | 2022-06-21 | 2022-08-19 | 临沭县华盛化工有限公司 | Special iron-molybdenum catalyst in hydrocyanic acid production process and preparation method |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160330 |
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| RJ01 | Rejection of invention patent application after publication |