CN1296312C - Zirconium corundum refractory ball - Google Patents
Zirconium corundum refractory ball Download PDFInfo
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- CN1296312C CN1296312C CNB200510017569XA CN200510017569A CN1296312C CN 1296312 C CN1296312 C CN 1296312C CN B200510017569X A CNB200510017569X A CN B200510017569XA CN 200510017569 A CN200510017569 A CN 200510017569A CN 1296312 C CN1296312 C CN 1296312C
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- refractory ball
- corundum
- clay powder
- ball
- zirconium corundum
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Abstract
The present invention relates to a zirconium corundum refractory ball which has the characteristics of few air holes, high volume density, high strength, good high-temperature property and large heat storage capacity; the zirconium corundum refractory ball can be used in a hot blast stove of a blast furnace with capacity more than 450m<3>. The refractory ball comprises 75 to 85 wt% of corundum, 5 to 10 wt% of alpha-Al2O3, 8 to 15 wt% of finished zircon ore, 5 to 8 wt% of clay powder, and 3 to 5 wt% of lignin liquor of the total weight of the corundum, the alpha-Al2 O3, the finished zircon ore and the clay powder. The refractory ball is made by mulling, forming, drying and sintering. The refractory ball has the advantages of large heat storage capacity, little charge, reduced hot blast stove volume and low investment cost; the refractory ball can be well applied to the upper part of the hot blast stove of a blast furnace and heat storage chambers of various industrial furnaces; the refractory ball is a creative contribution to the fireproofing material for the hot blast stove of a blast furnace, and has great economic benefit and wide development and application prospects.
Description
One, technical field
The present invention relates to metallurgical technology, particularly a kind of Zirconium corundum refractory ball that on the hotblast stove of metallurgy high furnace, uses.
Two, technical background
It is heat exchange that the general refractory ball that uses on the hotblast stove of metallurgy high furnace mainly acts on, for blast furnace provides high wind-warm syndrome.In use, ball and ball are piled up naturally, make it form the curve gas channel, realize heat exchange, but this refractory ball is because void content height, volume density are low, reasons such as intensity is low, thermal shock resistance difference, problems such as efflorescence, broken ball, bonding in use appear easily, reduce gas channel, reduced wind pushing temperature, cause frequent blowing out at last, change the shuttle, overhaul; Because its heat storage capacity is little, so can only be with 450m
3Use on the hotblast stove of above blast furnace.
Three, summary of the invention
At above-mentioned situation, the present invention's purpose is to overcome the deficiencies in the prior art and defective, provides a kind of zirconium steel beautiful matter refractory ball, with solve low pore, high volume density, high strength, high-temperature behavior is good, heat storage capacity is big, can be with 450m
3The refractory ball problem of using on the hotblast stove of above blast furnace, the technical scheme of its enforcement are that this refractory ball is by by weight percentage: corundum 75-80%, α-Al
2O
35-10%, zircon ore concentrate 8-15% and clay powder 5-8% and above-mentioned corundum α-Al
2O
3, zircon ore concentrate and clay powder gross weight the lignin liquor of 3-5%, make through mixed grind, moulding, oven dry and sintering, refractory ball heat storage capacity height of the present invention, the Intake Quantity of ball is few, reduce the hotblast stove volume, save cost of investment, can finely be applied to the hotblast stove top and the various industrial furnace regenerator of blast furnace, be a creative contribution to blast furnace production and refractory materials, economic benefit is huge.
Four, description of drawings
Accompanying drawing is a process flow sheet of the present invention.
Five, embodiment
Below in conjunction with particular case and process flow sheet concrete performance of the present invention is elaborated.Provided by technical scheme and process flow sheet, refractory ball of the present invention is by weight percent meter: corundum 75-80%, α-Al
2O
35-10%, zircon ore concentrate 8-15% and clay powder (wedding agent) 5-8% and above-mentioned corundum, α-Al
2O
3Make with the lignin liquor of the 3-5% of zircon ore concentrate, clay powder gross weight, wherein corundum and lignin liquor wet earlier grind stir after, add zircon ore concentrate and α-Al again
2O
3, stir the back and add clay powder and grind even (more than be commonly referred to as to mix roll over), be pressed into ball-type by shaper after, dry (residual amount＜2%) by stoving oven, place again in the sintering oven under the high temperature more than 1480 ℃, fire balling-up; This refractory ball diameter is 40-80mm, contains Al
2O
380-85% and ZrO
25-10%, refractoriness are greater than 1790 ℃, and loading softening begins temperature more than 1550 ℃, and density is greater than 3.00g/cm
3, void content is less than 20%, and intensity is greater than the 40000N/ ball; Said component corundum contains Al
2O
3〉=90%, volume density 〉=3.10g/cm
3α-Al
2O
3Contain Al
2O
3〉=98%, particle diameter 180-325 order; Zircon ore concentrate contains ZrO
250-68%, particle diameter 160-200 order; Clay powder contains Al
2O
330%-35%, particle diameter 160-200 order; Lignin liquor proportion is greater than 1.20.
Bottom illustrates particular case of the present invention again, and by weight percentage, the present invention adopts corundum 80%, α-Al
2O
36%, zircon ore concentrate 9%, clay powder 5% and corundum α-Al
2O
3, the lignin liquor 4% of zircon ore concentrate and clay powder gross weight or the corundum of 80kg, 6kg α-Al
2O
3, the zircon ore concentrate of 9kg and 5kg clay powder make raw material (component) with the lignin liquor of 4kg and make, wherein corundum and lignin liquor wet roll over stir after, add zircon ore concentrate and α-Al again
2O
3, after the stirring, add clay powder and mix and roll over evenly, be pressed into the spheroid of diameter 40-80mm with shaper, dry to water ratio less than 2%, under the temperature more than 1480 ℃, be fired into Al again
2O
3Content is at 80-85%, ZrO
2Content 5-10%, refractoriness greater than 1790 ℃, loading softening begin temperature more than 1550 ℃, density is greater than 3.00g/cm
3, void content less than 20%, intensity is the refractory ball of 40-80mm greater than 40000N/ ball, diameter, after quality inspection is qualified, puts in storage standby.
By above-mentioned situation as can be seen, the Zirconium corundum refractory ball essential substance is that (the corundum volume density is 〉=3.00g/cm corundum
3), increased the volume density of Zirconium corundum refractory ball, improved heat storage capacity, increased toughness, improved thermal shock resistance, avoided product in use because heating, air-supply cause broken ball phenomenon.Zirconium corundum refractory ball uses on hotblast stove top, helps accumulation of heat and heat passage, can keep Stability Analysis of Structures for a long time under high-temperature load, and embrittlement and ruckbildung do not take place, and has improved the serviceability and the heat exchanger effectiveness of hotblast stove greatly.The Zirconium corundum refractory ball heat storage capacity improves 15%, a same hotblast stove that certain heat storage capacity demand is arranged, the Intake Quantity of ball reduces 20%, life-span is long, be original more than 1.4 times, make the hotblast stove overall volume dwindle 10%, reduce investment total cost 20%, can well be applied to the hotblast stove top and the various industrial furnace regenerator of blast furnace.
Claims (6)
1, a kind of Zirconium corundum refractory ball is characterized in that: this refractory ball is by weight percent meter: corundum 75-80%, α-Al
2O
35-10%, zircon ore concentrate 8-15% and clay powder 5-8% and corundum, α-Al
2O
3, zircon ore concentrate and clay powder gross weight the lignin liquor of 3-5% make, wherein corundum and lignin liquor wet earlier grind stir after, add zircon ore concentrate and α-Al again
2O
3, stir the back and add clay powder and grind even, be pressed into ball-type by shaper after, dry by stoving oven, place again in the sintering oven under the high temperature more than 1480 ℃, fire balling-up.
2, a kind of Zirconium corundum refractory ball according to claim 1, it is characterized in that: described corundum contains Al
2O
3〉=90%, volume density 〉=3.10g/cm
3
3, a kind of Zirconium corundum refractory ball according to claim 1 is characterized in that: described α-Al
2O
3Contain Al
2O
3〉=98%, particle diameter 180-325 order.
4, a kind of Zirconium corundum refractory ball according to claim 1, it is characterized in that: described zircon ore concentrate contains ZrO
250-68%, particle diameter 160-200 order.
5, a kind of Zirconium corundum refractory ball according to claim 1, it is characterized in that: described clay powder contains Al
2O
330%-35%, particle diameter 160-200 order.
6, a kind of Zirconium corundum refractory ball according to claim 1 is characterized in that: described lignin liquor proportion is greater than 1.20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510017569XA CN1296312C (en) | 2005-05-13 | 2005-05-13 | Zirconium corundum refractory ball |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510017569XA CN1296312C (en) | 2005-05-13 | 2005-05-13 | Zirconium corundum refractory ball |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1693276A CN1693276A (en) | 2005-11-09 |
| CN1296312C true CN1296312C (en) | 2007-01-24 |
Family
ID=35352421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200510017569XA Expired - Fee Related CN1296312C (en) | 2005-05-13 | 2005-05-13 | Zirconium corundum refractory ball |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1296312C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100383083C (en) * | 2006-04-29 | 2008-04-23 | 巩义市华西炉料有限公司 | Corundum combined high-strength refractory ball |
| CN101555151B (en) * | 2009-05-25 | 2011-12-07 | 巩义市金岭耐火材料有限公司 | Corundum fireproof ball used for ball-type hot-blast stove and preparation method thereof |
| EP2394972B1 (en) * | 2010-06-09 | 2013-08-21 | AGC Ceramics Co., Ltd. | Light-weight refractory aggregate |
| CN102976777A (en) * | 2012-12-07 | 2013-03-20 | 郑州凯翔耐火材料有限公司 | Agent for reducing open pores of refractory brick body |
| CN108017402B (en) * | 2017-12-27 | 2020-05-22 | 济源市耐火炉业有限公司 | Zirconium corundum baking-free brick preparation equipment and preparation method |
Citations (10)
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|---|---|---|---|---|
| CN1051163A (en) * | 1989-10-21 | 1991-05-08 | 山东耐火材料厂 | Sillimanite matter refractory ball and production method thereof |
| JPH05178675A (en) * | 1991-12-27 | 1993-07-20 | Harima Ceramic Co Ltd | Castable refractory |
| CN1096503A (en) * | 1993-06-19 | 1994-12-21 | 包钢耐火材料厂 | Compact high-alumina refractory brick |
| CN1115746A (en) * | 1995-04-25 | 1996-01-31 | 河北省磁县耐火材料厂 | High-density refractory magnesia-alumina ball and its prodn process |
| CN1189476A (en) * | 1998-01-23 | 1998-08-05 | 任建军 | High strength refractory balls |
| CN1223985A (en) * | 1998-01-23 | 1999-07-28 | 任建军 | Low creep refractory ball |
| US5972102A (en) * | 1996-10-29 | 1999-10-26 | North American Refractories Co. | Hydraulically-bonded monolithic refractories containing a calcium oxide-free binder comprised of a hydratable alumina source and magnesium oxide |
| CN1521140A (en) * | 2003-01-27 | 2004-08-18 | 郑州豫兴氮氧结合耐火材料有限公司 | Highly regenerative fireproof ball |
| CN1521143A (en) * | 2003-01-27 | 2004-08-18 | 郑州豫兴氮氧结合耐火材料有限公司 | Highly regenerative low creeping fireproof ball |
| CN1634796A (en) * | 2003-12-30 | 2005-07-06 | 郑州豫兴氮氧结合耐火材料有限公司 | Magnesia alumina spinel refractory ball |
-
2005
- 2005-05-13 CN CNB200510017569XA patent/CN1296312C/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1051163A (en) * | 1989-10-21 | 1991-05-08 | 山东耐火材料厂 | Sillimanite matter refractory ball and production method thereof |
| JPH05178675A (en) * | 1991-12-27 | 1993-07-20 | Harima Ceramic Co Ltd | Castable refractory |
| CN1096503A (en) * | 1993-06-19 | 1994-12-21 | 包钢耐火材料厂 | Compact high-alumina refractory brick |
| CN1115746A (en) * | 1995-04-25 | 1996-01-31 | 河北省磁县耐火材料厂 | High-density refractory magnesia-alumina ball and its prodn process |
| US5972102A (en) * | 1996-10-29 | 1999-10-26 | North American Refractories Co. | Hydraulically-bonded monolithic refractories containing a calcium oxide-free binder comprised of a hydratable alumina source and magnesium oxide |
| CN1189476A (en) * | 1998-01-23 | 1998-08-05 | 任建军 | High strength refractory balls |
| CN1223985A (en) * | 1998-01-23 | 1999-07-28 | 任建军 | Low creep refractory ball |
| CN1521140A (en) * | 2003-01-27 | 2004-08-18 | 郑州豫兴氮氧结合耐火材料有限公司 | Highly regenerative fireproof ball |
| CN1521143A (en) * | 2003-01-27 | 2004-08-18 | 郑州豫兴氮氧结合耐火材料有限公司 | Highly regenerative low creeping fireproof ball |
| CN1634796A (en) * | 2003-12-30 | 2005-07-06 | 郑州豫兴氮氧结合耐火材料有限公司 | Magnesia alumina spinel refractory ball |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1693276A (en) | 2005-11-09 |
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