CN101492302A - Composite brick for shaft kiln and method of producing the same - Google Patents
Composite brick for shaft kiln and method of producing the same Download PDFInfo
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- CN101492302A CN101492302A CNA2009100956847A CN200910095684A CN101492302A CN 101492302 A CN101492302 A CN 101492302A CN A2009100956847 A CNA2009100956847 A CN A2009100956847A CN 200910095684 A CN200910095684 A CN 200910095684A CN 101492302 A CN101492302 A CN 101492302A
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- refractory aggregate
- composite brick
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- shaft kiln
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Abstract
The invention discloses an energy-saving phosphate composite brick for mechanized shaft kilns and a preparation method thereof. The composite brick for mechanized shaft kilns is of layer structure and is compounded by a work layer and an insulating layer. The method for preparing the composite brick for mechanized shaft kilns comprises the following steps: carrying out batch mixing respectively on the work layer and the insulating layer after material proportioning and then carrying out mechanical pressing for molding, drying molded green bricks at the temperature of 60-80 DEG C and then baking the green bricks at the temperature of 1,350 DEG C. The composite brick can meet the technical requirements and use requirements of the mechanized shaft kilns, save energy and reduce consumption as well as prolong the service life of the mechanized shaft kilns. The preparation method is simple and easy to implement.
Description
Technical field
The present invention relates to a kind of refractory materials and preparation method thereof, specifically is the machine shaft kiln with energy-saving phosphates composite brick and preparation method thereof.
Background technology
The service requirements of machine shaft kiln: the one, high temperature resistant 1350 ℃-1450 ℃, two are to use the life-span: hydraucone is thermal zone to be 6 months, the kiln stretched partly is 2-3.Existing refractory brick, insulating brick are single material-structure, the brick of various performances need be used during use, all use this scheme on the machine shaft kiln at present, influence for erosion, wearing and tearing and the temperature difference sudden turn of events of bearing high-temperature material, for this harsh operational condition of adaline shaft kiln, in the work-ing life of prolongation machine shaft kiln, the fine refractory materials has all correspondingly been selected by producer, as phosphoric acid salt refractory brick.Facts have proved, because the thermal conductivity height of high-quality refractory material, the one, make that temperature descends in the kiln body, influence quality product, guarantee that quality product must many consume fuel; The 2nd, kiln body case temperature is obviously risen, overstep the extreme limit sometimes, cause the kiln shell distortion, gently then cause stopping production, heavy then kiln is scrapped, and has not only wasted fuel, and has seriously reduced usage ratio of equipment, thereby has more seriously influenced economic benefit.In order to address this problem, producer once added between chamotte kiln kiln body case and kiln body liner and used various insulating fire bricks, fire-retardent fiber felt-rug etc., but these lagging material intensity are low, bonding properties is poor.Seeking to satisfy the technical requirements of machine shaft kiln, the scheme that can satisfy the service requirements of machine shaft kiln again solves this problem always.
Summary of the invention
Technical problem to be solved by this invention provides good composite brick of a kind of refractory heat-insulating performance and preparation method thereof, the use of this composite brick can be satisfied the technical requirements of machine shaft kiln, can satisfy the service requirements of machine shaft kiln again, can realize saving energy and reduce the cost, prolong the work-ing life of machine shaft kiln; Its preparation method is simple.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: composite brick for shaft kiln, this composite brick are laminate structure, are composited by working lining and thermofin, and described working lining comprises following component, and the weight percent of each component is:
Refractory aggregate 45～55%
The refractory aggregate fine powder 35～45% of particle diameter d≤0.12mm
Additive 2～5%
Binding agent 3.5～6.5%
Described thermofin comprises following component, and the weight percent of each component is:
Refractory aggregate 50～60%
The refractory aggregate fine powder 30～40% of particle diameter d≤0.12mm
Additive 2～5%
Binding agent 3.5～6.5%
The light ball of outer addition polymerization is gently changed agent 3～4%.
As preferably, described working lining comprises following component, and the weight percent of each component is:
Refractory aggregate 50%
The refractory aggregate fine powder 40% of particle diameter d≤0.12mm
Additive 5%
Described thermofin comprises following component, and the weight percent of each component is:
Refractory aggregate 52%
The refractory aggregate fine powder 35% of particle diameter d≤0.12mm
Additive 5%
The light ball of outer addition polymerization is gently changed agent 3%.
As preferably, described working lining comprises following component, and the weight percent of each component is:
Refractory aggregate 55%
The refractory aggregate fine powder 35% of particle diameter d≤0.12mm
Additive 5%
Described thermofin comprises following component, and the weight percent of each component is:
Refractory aggregate 55%
The refractory aggregate fine powder 31% of particle diameter d≤0.12mm
Additive 5%
The light ball of outer addition polymerization is gently changed agent 4%.
Described refractory aggregate is to be formed the main component Al of alumine by the temperature lower calcination of alumine at 1500～1600 ℃
2O
3Weight percent 〉=70%, guarantee the technical requirements of working lining.
The grain composition of described refractory aggregate is: the particulate weight percent of 1.5mm≤particle diameter d≤5.5mm is 55～75%, and the particulate weight percent of particle diameter d＜1.5mm is 25～45%.
Described additive is an active silica, its main component SiO
2Weight percent 〉=90%, particle diameter d is less than 5 μ m,, with acceleration of sintering.
The thickness ratio of described working lining and thermofin is 3: 7, to take into account work-ing life and heat-insulating property.
The bonding crack of described working lining and thermofin is a curve-like, has both guaranteed fire-resistant, heat insulation requirement, guarantees the intensity of whole brick again.
Described bonding crack indentation, bonding force is strong like this, especially increases the shearing force of junction.
The method for preparing the described composite brick for shaft kiln of claim 1, with working lining and the thermofin back batch mixing of preparing burden respectively, mechanical pressing is dried formed green brick then under 60～80 ℃ temperature then, burns till under 1350 ℃ temperature again.
The present invention is owing to adopted technique scheme, this composite brick is working lining and thermofin with the prionodont structure laminate structure that is composited, have fire-resistant preferably and effect of heat insulation, during preparation working lining and thermofin are prepared burden respectively, batch mixing, together moulding then, burn till.The working lining of composite brick and thermofin have firm bonding force, and working lining has good high temperature resistant, acid and alkali-resistance, abrasion resistance properties, the physical strength height, and good thermal shock stability, the thermofin heat-proof quality is good, the intensity height.This composite brick can satisfy the technical requirements and the service requirements of machine shaft kiln, can realize saving energy and reduce the cost, and prolongs the work-ing life of machine shaft kiln.Its preparation method is simple, implements easily.
Description of drawings
Below in conjunction with accompanying drawing the present invention is further described.
Fig. 1 is the structural representation of composite brick for shaft kiln of the present invention.
Embodiment
Composite brick for shaft kiln of the present invention, this composite brick are laminate structure, are composited by working lining and thermofin, and described working lining comprises following component, and the weight percent of each component is:
Refractory aggregate 45～55%
The refractory aggregate fine powder 35～45% of particle diameter d≤0.12mm
Additive 2～5%
Binding agent 3.5～6.5%
Described thermofin comprises following component, and the weight percent of each component is:
Refractory aggregate 50～60%
The refractory aggregate fine powder 30～40% of particle diameter d≤0.12mm
Additive 2～5%
Binding agent 3.5～6.5%
The light ball of outer addition polymerization is gently changed agent 3～4%.
Described refractory aggregate is to be formed the main component Al of alumine by the temperature lower calcination of alumine at 1500～1600 ℃
2O
3Weight percent 〉=70%.The grain composition of described refractory aggregate is: the particulate weight percent of 1.5mm≤particle diameter d≤5.5mm is 55～75%, and the particulate weight percent of particle diameter d＜1.5mm is 25～45%.The refractory aggregate fine powder mainly refers to the fine powder that alumina content is worn at the sintering alumina particle of 40%-60%, described refractory aggregate fine powder is carefully for well, to improve the intensity of brick, general particle diameter d≤0.12mm is suitable, and described refractory aggregate fine powder is preferably selected particle diameter d≤0.09mm.Described binding agent is 1: 1 solution of water and paper pulp.Described additive is an active silica, its main component SiO
2Weight percent 〉=90%, particle diameter d is less than 5 μ m.Poly-light ball is gently changed the bead that agent is the particle diameter 1-0.5mm that makes of porous plastics, and major ingredient is a polystyrene.
Embodiment one
Described working lining comprises following component, and the weight percent of each component is:
Refractory aggregate 50%
The refractory aggregate fine powder 40% of particle diameter d≤0.12mm
Described thermofin comprises following component, and the weight percent of each component is:
Refractory aggregate 52%
The refractory aggregate fine powder 35% of particle diameter d≤0.12mm
The light ball of outer addition polymerization is gently changed agent 3%.
Embodiment two
Described working lining comprises following component, and the weight percent of each component is:
Refractory aggregate 55%
The refractory aggregate fine powder 35% of particle diameter d≤0.12mm
Described thermofin comprises following component, and the weight percent of each component is:
Refractory aggregate 55%
The refractory aggregate fine powder 31% of particle diameter d≤0.12mm
The light ball of outer addition polymerization is gently changed agent 4%.
Figure 1 shows that composite brick of the present invention, working lining aggregate 2 and thermofin aggregate 4 play skeleton function respectively in working lining 1 and thermofin 5.Bonding crack 3 indentations of described its working lining 1 and thermofin 5.The thickness of described working lining 1 accounts for 70% of whole brick thickness.
The method for preparing above-mentioned composite brick for shaft kiln, with working lining and the thermofin back batch mixing of preparing burden respectively, mechanical pressing is dried formed green brick then under 60～80 ℃ temperature then, burns till under 1350 ℃ temperature again.
Composite brick of the present invention integrates the refractory heat-insulating function, is mainly used in the machine shaft kiln, needing also can be used for other Thermal Equipment of refractory heat-insulating, and maximum operation (service) temperature reaches 1500 ℃.
Claims (10)
1. composite brick for shaft kiln, it is characterized in that: this composite brick is a laminate structure, is composited by working lining and thermofin, and described working lining comprises following component, and the weight percent of each component is:
Refractory aggregate 45～55%
The refractory aggregate fine powder 35～45% of particle diameter d≤0.12mm
Additive 2～5%
Binding agent 3.5～6.5%
Described thermofin comprises following component, and the weight percent of each component is:
Refractory aggregate 50～60%
The refractory aggregate fine powder 30～40% of particle diameter d≤0.12mm
Additive 2～5%
Binding agent 3.5～6.5%
The light ball of outer addition polymerization is gently changed agent 3～4%.
2. according to the described composite brick for shaft kiln of claim 1, it is characterized in that: described working lining comprises following component, and the weight percent of each component is:
Refractory aggregate 50%
The refractory aggregate fine powder 40% of particle diameter d≤0.12mm
Additive 5%
Binding agent 5%
Described thermofin comprises following component, and the weight percent of each component is:
Refractory aggregate 52%
The refractory aggregate fine powder 35% of particle diameter d≤0.12mm
Additive 5%
Binding agent 5%
The light ball of outer addition polymerization is gently changed agent 3%.
3. according to the described composite brick for shaft kiln of claim 1, it is characterized in that: described working lining comprises following component, and the weight percent of each component is:
Refractory aggregate 55%
The refractory aggregate fine powder 35% of particle diameter d≤0.12mm
Additive 5%
Binding agent 5%
Described thermofin comprises following component, and the weight percent of each component is:
Refractory aggregate 55%
The refractory aggregate fine powder 31% of particle diameter d≤0.12mm
Additive 5%
Binding agent 5%
The light ball of outer addition polymerization is gently changed agent 4%.
4. according to the described composite brick for shaft kiln of claim 1, it is characterized in that: described refractory aggregate is to be formed the main component Al of alumine by the temperature lower calcination of alumine at 1500～1600 ℃
2O
3Weight percent 〉=70%.
5. according to the described composite brick for shaft kiln of claim 4, it is characterized in that: the grain composition of described refractory aggregate is: the particulate weight percent of 1.5mm≤particle diameter d≤5.5mm is 55～75%, and the particulate weight percent of particle diameter d＜1.5mm is 25～45%.
6. according to the described composite brick for shaft kiln of claim 1, it is characterized in that: described additive is an active silica, its main component SiO
2Weight percent 〉=90%, particle diameter d is less than 5 μ m.
7. according to the described composite brick for shaft kiln of claim 1, it is characterized in that: the thickness ratio of described working lining and thermofin is 3: 7.
8. according to the described composite brick for shaft kiln of claim 1, it is characterized in that: the bonding crack of described working lining and thermofin is a curve-like.
9. described according to Claim 8 composite brick for shaft kiln is characterized in that: described bonding crack indentation.
10. the method for preparing the described composite brick for shaft kiln of claim 1, it is characterized in that: with working lining and the thermofin back batch mixing of preparing burden respectively, mechanical pressing is dried formed green brick then under 60～80 ℃ temperature then, burns till under 1350 ℃ temperature again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100956847A CN101492302A (en) | 2009-01-15 | 2009-01-15 | Composite brick for shaft kiln and method of producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100956847A CN101492302A (en) | 2009-01-15 | 2009-01-15 | Composite brick for shaft kiln and method of producing the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101492302A true CN101492302A (en) | 2009-07-29 |
Family
ID=40923115
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100956847A Pending CN101492302A (en) | 2009-01-15 | 2009-01-15 | Composite brick for shaft kiln and method of producing the same |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297588A (en) * | 2010-06-22 | 2011-12-28 | 樊争峰 | Composite insulating brick for kiln liner of rotary kiln and manufacturing method of brick |
| CN103496996A (en) * | 2013-10-10 | 2014-01-08 | 浙江自立股份有限公司 | Burnt agalmatolite brick and preparation method of burnt agalmatolite brick |
| CN105222583A (en) * | 2015-09-23 | 2016-01-06 | 安徽华钢冶金科技有限公司 | A kind of tunnel kiln car adopting overall car face |
| CN105481408A (en) * | 2016-01-08 | 2016-04-13 | 浙江长兴久鑫耐火材料有限公司 | Composite refractory brick |
| CN105645978A (en) * | 2016-01-08 | 2016-06-08 | 浙江长兴久鑫耐火材料有限公司 | Heavy/light composite refractory brick |
| CN105669170A (en) * | 2016-01-08 | 2016-06-15 | 浙江长兴久鑫耐火材料有限公司 | Heavy-light composite refractory brick containing burning loss pore-forming agent |
| CN105732084A (en) * | 2016-01-08 | 2016-07-06 | 浙江长兴久鑫耐火材料有限公司 | Composite refractory brick containing ignition lost pore forming agent |
-
2009
- 2009-01-15 CN CNA2009100956847A patent/CN101492302A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297588A (en) * | 2010-06-22 | 2011-12-28 | 樊争峰 | Composite insulating brick for kiln liner of rotary kiln and manufacturing method of brick |
| CN103496996A (en) * | 2013-10-10 | 2014-01-08 | 浙江自立股份有限公司 | Burnt agalmatolite brick and preparation method of burnt agalmatolite brick |
| CN103496996B (en) * | 2013-10-10 | 2014-11-05 | 浙江自立股份有限公司 | Burnt agalmatolite brick and preparation method of burnt agalmatolite brick |
| CN105222583A (en) * | 2015-09-23 | 2016-01-06 | 安徽华钢冶金科技有限公司 | A kind of tunnel kiln car adopting overall car face |
| CN105481408A (en) * | 2016-01-08 | 2016-04-13 | 浙江长兴久鑫耐火材料有限公司 | Composite refractory brick |
| CN105645978A (en) * | 2016-01-08 | 2016-06-08 | 浙江长兴久鑫耐火材料有限公司 | Heavy/light composite refractory brick |
| CN105669170A (en) * | 2016-01-08 | 2016-06-15 | 浙江长兴久鑫耐火材料有限公司 | Heavy-light composite refractory brick containing burning loss pore-forming agent |
| CN105732084A (en) * | 2016-01-08 | 2016-07-06 | 浙江长兴久鑫耐火材料有限公司 | Composite refractory brick containing ignition lost pore forming agent |
| CN105669170B (en) * | 2016-01-08 | 2018-11-09 | 浙江长兴久鑫耐火材料科技股份有限公司 | A kind of heavy and light composite refractory brick losing pore creating material containing burning |
| CN105732084B (en) * | 2016-01-08 | 2018-11-27 | 浙江长兴久鑫耐火材料科技股份有限公司 | A kind of composite refractory brick losing pore creating material containing burning |
| CN105645978B (en) * | 2016-01-08 | 2018-12-11 | 浙江长兴久鑫耐火材料科技股份有限公司 | A kind of heavy and light composite refractory brick |
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Application publication date: 20090729 |