CN102230741A - Heat-insulating integral compound brick with lutaceous structure and preparation method - Google Patents
Heat-insulating integral compound brick with lutaceous structure and preparation method Download PDFInfo
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- CN102230741A CN102230741A CN2011101506820A CN201110150682A CN102230741A CN 102230741 A CN102230741 A CN 102230741A CN 2011101506820 A CN2011101506820 A CN 2011101506820A CN 201110150682 A CN201110150682 A CN 201110150682A CN 102230741 A CN102230741 A CN 102230741A
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Abstract
The invention discloses a heat-insulating integral compound brick with a lutaceous structure. The heat-insulating integral compound brick comprises a dense clay heavy working layer and a light heat-insulating layer which is prepared from one or more lightweight aggregates serving as raw materials such as corundum hollow spheres, light porzite aggregate, light high-alumina aggregate, cenospheres and light ceramsite, wherein the dense clay heavy working layer and the light heat-insulating layer are compounded to obtain the compound brick; and the length ratio of the heavy working layer to the light heat-insulating layer is (1-5):(3-1). The invention further discloses a preparation method of the heat-insulating integral compound brick with the lutaceous structure. The heat-insulating integral compound brick has high structural strength and high heat insulating performance.
Description
Technical field
The invention belongs to technical field of refractory materials, relate in particular to a kind of fire-resistant composite brick and preparation method.
Background technology
Along with the continuous appearance of manufacture of cement new technology, the manufacture of cement main process equipment develops to the maximization direction, increases output, improves the quality, saves energy and reduce the cost, reducing cost becomes the key that increases benefit in the production management.Rotary kiln mainly is made up of kiln cylinder body, refractory brick and drive apparatus etc.In process of production, the heat in the material passes to kliner coating, refractory brick and kiln cylinder body by radiation and conduction, and the heat that is delivered to kiln cylinder body is dispersed in the atmosphere by the mode of radiation and convection current again.Because what of the thickness of thermal conductivity factor and material decision temperature drop, the thermal conductivity factor of refractory brick and kiln cylinder body is bigger, no matter dry method or wet method, and the heat loss of cylinder of rotary kiln all accounts for about 1/4th of both hear rates, has caused the huge waste of the energy.At present, refractory brick is directly to build by laying bricks or stones on kiln cylinder body, good cooling energy-saving, in addition, the limit safe temperature of rotary kiln about 410 ℃, if near or surpass this temperature, will have potential safety hazard.
Existing refractory brick and insulating brick are single structure mostly, need during use the brick of various performances is used, if on the motionless equipment of relative fixed, as tunnel cave, the kiln of falling the Yan, be used and can both meet the demands; But on the equipment of some relative motions,, be used and just be difficult to meet the demands as rotary kiln.Some producers and research unit study this and tackle key problems, and have released the composite brick that some heavys and lightweight combine, but because lightweight part-structure intensity is low excessively, can't satisfy instructions for use and do not promote on a large scale, still based on the heavy brick.Rotary kiln with the 10000t/d of conch group is an example, preceding intermediate zone uses spinel brick, clinkering zone to use magnesite-chrome brick, since the thermal conductivity factor of the magnesite-chrome brick that spinel brick and clinkering zone use big (〉=2.7W/mK), make kiln cylinder body outside wall temperature higher (about about 380 ℃, can reach 420 ℃ during high temperature greatly).The cylinder body outer wall temperature is higher, the kiln cylinder body heat radiation is increased, thereby strengthen heat consumption of clinker, causes that the grog unit cost increases; Very easily make the cylindrical shell expanded by heating on the other hand, cause kiln middle part support roller Wa Wendu to raise, especially using the normal operation of later stage or summer to bring big hidden danger to equipment.The overheated damage probability that increases plant equipment of trunk, quickened barrel distortion, and barrel distortion has quickened the mechanical damage of liner, consequently falls brick, stop kiln, influences the running rate of cement rotary kiln.Therefore if can use composite brick fire-resistant, heat insulation dual-use function that the trunk temperature at intermediate zone position is reduced, reduce radiation loss, and help plant maintenance, improve operation rate at this position.Composite brick as if all use compound different parts design feature at all high temperature positions has then solved the problem of present existence well.
Summary of the invention
In order to overcome the deficiency that existing rotary kiln is relatively poor with the structural strength of clay brick, thermal conductivity factor big, the thermal and insulating performance difference is big, the object of the present invention is to provide a kind ofly to have structural strength and reach thermal and insulating performance good clay matter structural heat-insulation integrative composite brick and preparation method well.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of clay matter structural heat-insulation integrative composite brick, comprise leck matter heavy working lining, and with corundum bollow ball, light-weight mullite aggregate, lightweight bauxites aggregate, to float in pearl and the light ceramic one or more be that aglite is the light heat insulation layer of feedstock production, both compound composite bricks of making, the length dimension ratio of heavy working lining and light heat insulation layer is 1～5: 3～1.
Preferably, the chemical constituent quality percentage composition of described heavy working lining is as follows: Al
2O
3Be 30～45%, SiO
2Be 45～65%, other compositions that all the other are introduced for raw material.
Further, described heavy operational layer material is made up of in flint clay, Suzhou mud or Liuzhou mud one or more.
Further again, described light heat insulation layer aggregate is corundum bollow ball, light-weight mullite aggregate, lightweight bauxites aggregate, float one or more the mixture in pearl and the light ceramic.
In the described light heat insulation layer, the aglite chemical constituent quality percentage composition of various kinds is as follows: 1) corundum bollow ball, wherein Al
2O
3Greater than 93%; 2) light-weight mullite aggregate, wherein Al
2O
3Greater than 65%; 3) lightweight bauxites aggregate, wherein Al
2O
3Greater than 70%; 4) float pearl, wherein Al
2O
3Be 25～40%, SiO
2Be 50～65%; 5) light ceramic, wherein Al
2O
3Be 18～25%, SiO
2Be 55～65%.
A kind of preparation method of clay matter structural heat-insulation integrative composite brick, described preparation method's step is as follows:
(1) heavy working lining batching: in the described heavy working lining, the composition quality percentage composition is Al
2O
3Be 30～45%, SiO
2Be 45～65%, all the other are other compositions that raw material is introduced, earlier 325 powder materials are prepared in proportion the back and in ball mill, mix, again all the other particless of aggregates with add bond and mix the back to add the powder that mixes standby.
(2) light heat insulation layer batching:
Light heat insulation layer is selected corundum bollow ball, light-weight mullite aggregate, lightweight bauxites aggregate for use, is floated the mixture of one or more aglites in pearl or the light ceramic, by ratio requirement aglite, powder with add the bond mixing;
(3) moulding:
Finish after the batching, with dividing plate the material chamber of mould is divided into two parts, the length dimension ratio of fine and close working lining and light heat insulation layer is 1～5: 3～1, and reinforced back is extracted dividing plate out, adopts vibration pressurization or mechanical pressing;
(4) burn till:
Base substrate taking-up after moulding loading of kiln after 80～150 ℃ of oven dry was burnt till in 1100～1250 ℃ of insulations in 3～8 hours.
Further, in the described step (3), forming process is carried out on vibration press, frictional press or hydraulic press.
Further, in the described step (1), the feed particles grating that the heavy working lining adopts less than 1mm particle 25～35%, 325 order fine powders 25～35%, adds bond 3～5% for being not less than 1mm particle 35～45%; Earlier 325 powder materials are prepared in proportion the back and mix in ball mill when preparing burden, mix the powder that the back adding mixes at all the other particless of aggregates with adding bond again, mixing time is 10～30 minutes.
Further again, in the described step (2), the aglite particle diameter that described light heat insulation layer adopts is 0.2～5mm, natural bulk density 0.3～1.0g/cm
3, raw material mass mixture ratio is an aglite 55～70% in the light heat insulation layer, is not more than 325 order fine powders 30～45%, add bond 6～10%, when batching earlier aglite in proportion with add bond and mix, add powder then in proportion, mixing time is 10～30 minutes.
The used bond that adds is a kind of in spent pulping liquor, lignosulfonic acid salting liquid, the methocel solution.
The beneficial effect that has of the present invention is: do not reducing under the material situation in service life, resistance to wear, antistrip performance is good, thermal conductivity factor is low and structural strength is high, the building construction that is directly used in kiln is convenient, product has energy efficient, reduce the effect of material consumption and minimizing rotary kiln refractory material consumption, and can prolong service life of equipment.
Description of drawings
Fig. 1 is the structure chart of clay matter structural heat-insulation integrative composite brick.
Among the figure: 1, heavy working lining, 2, light heat insulation layer.
The specific embodiment
The present invention will be further described below in conjunction with accompanying drawing.
With reference to Fig. 1, a kind of clay matter structural heat-insulation integrative composite brick, comprise leck matter heavy working lining 1, and with corundum bollow ball, light-weight mullite aggregate, lightweight bauxites aggregate, to float in pearl and the light ceramic one or more be that aglite is the light heat insulation layer 2 of feedstock production, be composited by heavy working lining 1 and light heat insulation layer 2, the length dimension ratio of heavy working lining 1 and light heat insulation layer 2 is 1～5: 3～1.
The chemical constituent quality percentage composition of described heavy working lining is as follows: Al
2O3 is 30～45%, SiO
2Be 45～65%, other compositions that all the other are introduced for raw material.
Described heavy operational layer material is made up of in flint clay, Suzhou mud or Liuzhou mud one or more.
To state the light heat insulation layer aggregate be corundum bollow ball, light-weight mullite aggregate, lightweight bauxites aggregate, float one or more the mixture in pearl and the light ceramic.
In the described light heat insulation layer, the aglite chemical constituent quality percentage composition of various kinds is as follows: 1) corundum bollow ball, wherein Al
2O
3Greater than 93%; 2) light-weight mullite aggregate, wherein Al
2O
3Greater than 65%; 3) lightweight bauxites aggregate, wherein Al
2O
3Greater than 70%; 4) float pearl, wherein Al
2O
3Be 25～40%, SiO
2Be 50～65%; 5) light ceramic, wherein Al
2O
3Be 18～25%, SiO
2Be 55～65%.
The used bond that adds is a kind of in spent pulping liquor, lignosulfonic acid salting liquid, the methocel solution.
Embodiment 1: clay matter structural heat-insulation integrative composite brick
Raw material and quality percentage composition thereof that present embodiment heavy working lining is adopted are:
Wherein, the flint clay trade mark is YNS36.
By said ratio, the quality percentage composition Al of gained heavy components of working layer
2O
3Be 43%, SiO
252.4%, other compositions that all the other are introduced for raw material.
Raw material that light heat insulation layer adopted and quality percentage composition thereof are: corundum bollow ball 40%, float pearl 30%, and be not more than 325 order flint claies, 25%, 325 order Suzhou mud 5%, outer adding additives spent pulping liquor 6%; Composition quality percentage composition Al in the corundum bollow ball wherein
2O
3Be 96%; Float composition quality percentage composition Al in the pearl
2O
3Be 25%, SiO
2Be 65%.
Clay matter structural heat-insulation integrative composite brick manufacture method may further comprise the steps:
(1) batching:
Heavy working lining: earlier 1～3mm is not more than 325 purpose powders with being not more than to add after 1mm particles of aggregates and bond mix, stirs standby after 20 minutes.
The high-strength light thermal insulation layer: aglite is mixed with bond in proportion, add in proportion then powder stir 10 minutes standby.
(2) moulding: finish after the batching, with dividing plate the material chamber of mould is divided into two parts, the length dimension ratio of heavy working lining and high-strength light thermal insulation layer is 1: 3, and reinforced back is extracted dividing plate out, adopts vibration press mechanical pressing.
(3) burn till: the loading of kiln after 80 ℃ of oven dry of the base substrate taking-up after the moulding was burnt till in 1250 ℃ of insulations in 3 hours.
Embodiment 2: clay matter structural heat-insulation integrative composite brick
Raw material and quality percentage composition thereof that present embodiment heavy working lining is adopted are:
Wherein, the flint clay trade mark is YNS36, and the silica trade mark is GS-98.5.
By said ratio, the quality percentage composition Al of gained heavy components of working layer
2O
3Be 30%, silica is 65%, other compositions that all the other are introduced for raw material.
Raw material that light heat insulation layer adopted and quality percentage composition thereof are: lightweight bauxites aggregate 45%, and light ceramic 15% is not more than 325 order flint claies 40%, the methocel solution 7% that adds bond and be; Composition quality percentage composition Al in the lightweight bauxites aggregate wherein
2O
3Be 70%, composition quality percentage composition Al in the light ceramic
2O
3Be 18%, silica is 65%.
Clay matter structural heat-insulation integrative composite brick manufacture method may further comprise the steps:
(1) batching:
Heavy working lining: earlier 1～3mm is not more than 325 purpose powders with being not more than to add after 1mm particles of aggregates and bond mix, stirs standby after 10 minutes.
The high-strength light thermal insulation layer: aglite is mixed with bond in proportion, add in proportion then powder stir 10 minutes standby.
(2) moulding: finish after the batching, with dividing plate the material chamber of mould is divided into two parts, the length dimension ratio of heavy working lining and high-strength light thermal insulation layer is 3: 2, and reinforced back is extracted dividing plate out, adopts the frictional press mechanical pressing.
(3) burn till: the loading of kiln after 100 ℃ of oven dry of the base substrate taking-up after the moulding was burnt till in 1200 ℃ of insulations in 5 hours.
Embodiment 3: clay matter structural heat-insulation integrative composite brick
Raw material and quality percentage composition thereof that present embodiment heavy working lining is adopted are:
Wherein, the flint clay trade mark is YNS36.
By said ratio, the quality percentage composition Al of gained heavy components of working layer
2O
3Be 42%, SiO
2Be 47.5%, other compositions that all the other are introduced for raw material.
Raw material that light heat insulation layer adopted and quality percentage composition thereof are: corundum bollow ball 30%, and light-weight mullite aggregate 25% is not more than 325 order flint clay powders, 35%, 325 order Liuzhou mud 10%, adds bond lignosulfonic acid salting liquid 10%; Composition quality percentage composition Al in the corundum bollow ball wherein
2O
3Be 96%, composition quality percentage composition Al in the light-weight mullite aggregate
2O
3Be 74%.
Clay matter structural heat-insulation integrative composite brick manufacture method may further comprise the steps:
(1) batching:
Heavy working lining: earlier 1～3mm is not more than 325 purpose powders with being not more than to add after 1mm particles of aggregates and bond mix, stirs standby after 30 minutes.
The high-strength light thermal insulation layer: aglite is mixed with bond in proportion, add in proportion then powder stir 20 minutes standby.
(2) moulding: finish after the batching, with dividing plate the material chamber of mould is divided into two parts, the length dimension ratio of heavy working lining and high-strength light thermal insulation layer is 1: 3, and reinforced back is extracted dividing plate out, adopts vibration press mechanical pressing.
(3) burn till: the loading of kiln after 100 ℃ of oven dry of the base substrate taking-up after the moulding was burnt till in 1100 ℃ of insulations in 8 hours.
Embodiment 4: clay matter structural heat-insulation integrative composite brick
Raw material and quality percentage composition thereof that present embodiment heavy working lining is adopted are:
Wherein, the flint clay trade mark is YNS36, and the silica trade mark is GS-98.5.
By said ratio, the quality percentage composition Al of gained heavy components of working layer
2O
348%, SiO
243%, other compositions that all the other are introduced for raw material.
Raw material that light heat insulation layer adopted and quality percentage composition thereof are for floating pearl 15%, lightweight bauxites aggregate 15%, high alumina haydite 20%, 325 order flint clay powder 40%, 325 order clays 10%, add mass percent concentration and be 25% lignosulfonic acid salting liquid 8%, wherein used pearl composition quality percentage composition: the Al that floats
2O
3% is 25%, SiO
2% is 50%; Al in the used haydite
2O
3Composition quality percentage composition: Al
2O
3Be 25%, SiO
2Be 55%; Use lightweight bauxites aggregate composition quality percentage composition: Al
2O
3Be 80%, SiO
2Be 10%.
Clay matter structural heat-insulation integrative composite brick manufacture method may further comprise the steps:
(1) batching:
Heavy working lining: earlier 1～3mm is not more than 325 purpose powders with being not more than to add after 1mm particles of aggregates and bond mix, stirs standby after 20 minutes.
The high-strength light thermal insulation layer: aglite is mixed with bond in proportion, add in proportion then powder stir 30 minutes standby.
(2) moulding: finish after the batching, with dividing plate the material chamber of mould is divided into two parts, the length dimension ratio of heavy working lining and high-strength light thermal insulation layer is 5: 1, and reinforced back is extracted dividing plate out, adopts the hydraulic press mechanical pressing.
(3) burn till: the loading of kiln after 150 ℃ of oven dry of the base substrate taking-up after the moulding was burnt till in 1100 ℃ of insulations in 8 hours.
Claims (10)
1. clay matter structural heat-insulation integrative composite brick, it is characterized in that: comprise leck matter heavy working lining, and with corundum bollow ball, light-weight mullite aggregate, lightweight bauxites aggregate, to float in pearl and the light ceramic one or more be that aglite is the light heat insulation layer of feedstock production, both compound composite bricks of making, the length dimension ratio of heavy working lining and light heat insulation layer is 1～5: 3～1.
2. clay matter structural heat-insulation integrative composite brick according to claim 1 is characterized in that: the chemical constituent quality percentage composition of described heavy working lining is as follows: Al
2O
3Be 30～45%, SiO
2Be 45～65%, other compositions that all the other are introduced for raw material.
3. clay matter structural heat-insulation integrative composite brick according to claim 1 and 2 is characterized in that: described heavy working lining raw material is made up of in flint clay, Suzhou mud or Liuzhou mud one or more.
4. clay matter structural heat-insulation integrative composite brick according to claim 1 and 2 is characterized in that: described light heat insulation layer aggregate is corundum bollow ball, light-weight mullite aggregate, lightweight bauxites aggregate, float one or more the mixture in pearl and the light ceramic.
5. a kind of clay matter structural heat-insulation integrative composite brick according to claim 4 is characterized in that: in the described light heat insulation layer, the aglite chemical constituent quality percentage composition of various kinds is as follows: 1) corundum bollow ball, wherein Al
2O
3Greater than 93%; 2) light-weight mullite aggregate, wherein Al
2O
3Greater than 65%; 3) lightweight bauxites aggregate, wherein Al
2O
3Greater than 70%; 4) float pearl, wherein Al
2O
3Be 25～40%, SiO
2Be 50～65%; 5) light ceramic, wherein Al
2O
3Be 18～25%, SiO
2Be 55～65%%.
6. the preparation method of a clay matter structural heat-insulation integrative composite brick according to claim 1, it is characterized in that: described preparation method's step is as follows:
(1) heavy working lining batching: in the described heavy working lining, the composition quality percentage composition is Al
2O
3Be 30～45%, SiO
2Be 45～65%, all the other are other compositions that raw material is introduced, earlier 325 powder materials are prepared in proportion the back and in ball mill, mix, again all the other particless of aggregates with add bond and mix the back to add the powder that mixes standby.
(2) light heat insulation layer batching:
Light heat insulation layer is selected corundum bollow ball, light-weight mullite aggregate, lightweight bauxites aggregate for use, is floated the mixture of one or more aglites in pearl or the light ceramic, by ratio requirement aglite, powder with add the bond mixing;
(3) moulding:
Finish after the batching, with dividing plate the material chamber of mould is divided into two parts, the length dimension ratio of fine and close working lining and light heat insulation layer is 1～5: 3～1, and reinforced back is extracted dividing plate out, adopts vibration pressurization or mechanical pressing;
(4) burn till:
Base substrate taking-up after moulding loading of kiln after 80～150 ℃ of oven dry was burnt till in 1100～1250 ℃ of insulations in 3～8 hours.
7. the preparation method of clay matter structural heat-insulation integrative composite brick according to claim 6 is characterized in that: in the described step (3), forming process is carried out on vibration press, frictional press or hydraulic press.
8. according to the preparation method of claim 6 or 7 described caly structure heat-insulating integrated composite bricks, it is characterized in that: in the described step (1), the feed particles grating that the heavy working lining adopts is for being not less than 1mm particle 35～45%, less than 1mm particle 25～35%, 325 order fine powders 25～35% add bond 3～5%; Earlier 325 powder materials are prepared in proportion the back and mix in ball mill when preparing burden, mix the powder that the back adding mixes at all the other particless of aggregates with adding bond again, mixing time is 10～30 minutes.
9. according to the preparation method of claim 6 or 7 described clay matter structural heat-insulation integrative composite bricks, it is characterized in that: in the described step (2), the aglite particle diameter that described light heat insulation layer adopts is 0.2～5mm, natural bulk density 0.3～1.0g/cm
3, raw material mass mixture ratio is an aglite 55～70% in the light heat insulation layer, is not more than 325 order fine powders 30～45%, add bond 6～10%, when batching earlier aglite in proportion with add bond and mix, add powder then in proportion, mixing time is 10～30 minutes.
10. according to the preparation method of claim 6 or 7 described clay matter structural heat-insulation integrative composite bricks, it is characterized in that: the used bond that adds is a kind of in spent pulping liquor, lignosulfonic acid salting liquid, the methocel solution.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101506820A CN102230741A (en) | 2011-06-06 | 2011-06-06 | Heat-insulating integral compound brick with lutaceous structure and preparation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101506820A CN102230741A (en) | 2011-06-06 | 2011-06-06 | Heat-insulating integral compound brick with lutaceous structure and preparation method |
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| CN102230741A true CN102230741A (en) | 2011-11-02 |
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|---|---|---|---|
| CN2011101506820A Pending CN102230741A (en) | 2011-06-06 | 2011-06-06 | Heat-insulating integral compound brick with lutaceous structure and preparation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106946578A (en) * | 2017-03-23 | 2017-07-14 | 浙江华尔耐科技股份有限公司 | A kind of limekiln permanent robust type insulating brick |
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|---|---|---|---|---|
| US4130438A (en) * | 1976-12-11 | 1978-12-19 | Kyushu Taikarenga Kabushiki Kaisha | Basic composite unburned brick |
| CN101863675A (en) * | 2010-06-07 | 2010-10-20 | 浙江大学 | High-alumina structure heat-insulation integrated composite brick and preparation method |
-
2011
- 2011-06-06 CN CN2011101506820A patent/CN102230741A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4130438A (en) * | 1976-12-11 | 1978-12-19 | Kyushu Taikarenga Kabushiki Kaisha | Basic composite unburned brick |
| CN101863675A (en) * | 2010-06-07 | 2010-10-20 | 浙江大学 | High-alumina structure heat-insulation integrated composite brick and preparation method |
Non-Patent Citations (2)
| Title |
|---|
| 潘尚心: "《耐火粘土砖的生产常识》", 30 November 1958, 冶金工业出版社 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106946578A (en) * | 2017-03-23 | 2017-07-14 | 浙江华尔耐科技股份有限公司 | A kind of limekiln permanent robust type insulating brick |
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Application publication date: 20111102 |