CN102285810A - Forsterite structure and thermal insulation integrated composite brick and preparation method thereof - Google Patents

Forsterite structure and thermal insulation integrated composite brick and preparation method thereof Download PDF

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CN102285810A
CN102285810A CN201110150684XA CN201110150684A CN102285810A CN 102285810 A CN102285810 A CN 102285810A CN 201110150684X A CN201110150684X A CN 201110150684XA CN 201110150684 A CN201110150684 A CN 201110150684A CN 102285810 A CN102285810 A CN 102285810A
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insulation layer
working lining
light
composite brick
aglite
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CN102285810B (en
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王家邦
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Zhejiang University ZJU
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Abstract

The invention provides a forsterite structure and thermal insulation integrated composite brick. The composite brick is characterized by comprising a forsterite heavy working layer and a light thermal insulation layer prepared from light aggregates and powder which serve as raw materials and being formed by compositing the heavy working layer and the light thermal insulation layer, wherein the length ratio of the heavy working layer to the light thermal insulation layer is (1-5):(3-1). The invention also provides a preparation method of the composite brick. The composite brick has the advantages of good wear resistance, higher structural strength and good thermal insulation property.

Description

A kind of white olivine structural heat-insulation integrative composite brick and preparation method
Technical field
The present invention relates to fire resisting material field, especially 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 transmission 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 and material decision temperature drop, the thermal conductivity of refractory brick and kiln cylinder body is bigger, no matter dry method or wet method, and the thermosteresis 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 safety 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 furnace, the kiln of falling the Yan, be used and can both meet the demands; But on the equipment of some relative movement,, 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 service requirements 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 transitional zone uses spinel brick, clinkering zone to use magnesia chrome brick, since the thermal conductivity of the magnesia 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.Trunk the is heat gain excessively damage probability of mechanical means, quickened barrel distortion, and barrel distortion has quickened the physical disturbance of liner, consequently falls brick, stop kiln, influences the operation factor of cement rotary kiln.Therefore if can use composite brick fire-resistant, heat insulation dual-use function that the trunk temperature at transitional zone position is reduced, reduce heat lost by radiation, and help maintenance of the equipment, improve operation rate at this position.Composite brick as if all use compound different sites constructional feature at all high temperature positions has then solved the problem of present existence well.
Summary of the invention
In order to overcome existing fire-resistant composite brick and preparation method's the deficiency that wear resistance is relatively poor, structural strength is lower, thermal and insulating performance is relatively poor, the invention provides a kind of wear resistance is good, structural strength is higher, thermal and insulating performance is good white olivine structural heat-insulation integrative composite brick and preparation method.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of white olivine structural heat-insulation integrative composite brick, the white olivine structural heat-insulation integrative composite brick comprises white olivine heavy working lining and is the light heat insulation layer of feedstock production with aglite and powder, be composited by heavy working lining and light heat insulation layer, the length dimension ratio of heavy working lining and light heat insulation layer is 1~5: 3~1.
Preferably, the chemical composition quality percentage composition of described heavy working lining is as follows: MgO% is 40~50%, SiO 2% is 30~45%, other compositions that all the other are introduced for raw material.
Further, described heavy working lining is made up of two or more the raw material in forsterite, electrosmelted magnesite clinker, magnesite clinker, the silica.
As preferred a kind of scheme: the aglite in the described light heat insulation layer is made up of in corundum bollow ball, light-weight mullite aggregate, the lightweight bauxites aggregate one or more.
Further, in the described light heat insulation layer, the aglite chemical composition 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%, other compositions that all the other are introduced for raw material, other compositions that all the other are introduced for raw material.
A kind of preparation method of white olivine structural heat-insulation integrative composite brick, described preparation method's step is as follows:
(1) heavy working lining batching:
The chemical composition quality percentage composition of described heavy working lining is as follows: MgO% is 40~50%, SiO 2% is 30~45%, other compositions that all the other are introduced for raw material.To be not more than 325 powder materials earlier and prepare the back in proportion and in ball mill, mix, and mix the back and add the powder mix with adding wedding agent at all the other particless of aggregates again, stir 10~30 minutes.
(2) light heat insulation layer batching:
Aglite in the described light heat insulation layer is made up of in corundum bollow ball, light-weight mullite aggregate, the lightweight bauxites aggregate one or more.Earlier good the aglite weighing, aglite in proportion and add wedding agent and mix, add powder stirring 10~30 minutes then in proportion.
(3) moulding:
Finish after the batching, with dividing plate the material chamber of forming mould is divided into two portions, 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 1500~1600 ℃ of insulations in 3~8 hours.
Further, in the described step (3), moulding process is carried out on vibration press, friction press or oil press.
Further again, in the described step (1), the feed particles grating that the heavy working lining adopts less than 1mm particle 25~35%, is not more than 325 order fine powders 25~35% for being not less than 1mm particle 35~45%, adds wedding agent 3~5%.
In the described step (2), the aglite particle diameter that described light heat insulation layer adopts is 0.2~5mm, natural tap density 0.6~1.0g/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%, adds wedding agent 6~10%.
The used wedding agent that adds is a kind of in spent pulping liquor, lignin sulfonic acid salts solution, the methocel solution.
The beneficial effect that has of the present invention is: wear resistance is good, structural strength is higher, thermal and insulating performance is good; Do not reducing under the material situation in work-ing life, resistance to wear, antistrip performance is good, thermal conductivity 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 materials consumption and minimizing rotary kiln refractory materials consumption, and can prolong service life of equipment.
Description of drawings
Fig. 1 is the structure iron of white olivine structural heat-insulation integrative composite brick.
Among the figure: 1, heavy working lining, 2, light heat insulation layer.
Embodiment
The present invention will be further described below in conjunction with accompanying drawing.
With reference to Fig. 1, a kind of white olivine structural heat-insulation integrative composite brick, the white olivine structural heat-insulation integrative composite brick comprises white olivine heavy working lining 1 and is the light heat insulation layer 2 of feedstock production with aglite and powder, 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 composition quality percentage composition of described heavy working lining is as follows: MgO% is 40~50%, SiO 2% is 30~45%, other compositions that all the other are introduced for raw material.
Described heavy working lining is made up of two or more the raw material in forsterite, electrosmelted magnesite clinker, magnesite clinker, the silica.
Aglite in the described light heat insulation layer is made up of in corundum bollow ball, light-weight mullite aggregate, the lightweight bauxites aggregate one or more.
In the described light heat insulation layer, the aglite chemical composition 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%, other compositions that all the other are introduced for raw material, other compositions that all the other are introduced for raw material.
Embodiment 1:
Feed particles grating and quality percentage composition thereof that present embodiment heavy working lining is adopted are:
Figure BDA0000066432090000051
Wherein, raw materials used is the Yichang forsterite, and the trade mark is silica and the magnesite clinker of GS-98.5.
By said ratio, the quality percentage composition MgO% of gained heavy components of working layer is 40%, SiO 2% is 45%, 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 70%, 325 order forsterites 30%, add wedding agent spent pulping liquor 6%, Al in the wherein used corundum bollow ball 2O 3The composition quality percentage composition is 93%.
White olivine structural heat-insulation integrative composite brick manufacture method may further comprise the steps:
(1) batching:
Heavy working lining: earlier particles of aggregates and wedding agent are prepared in proportion and mix in ball mill, add 325 purpose powders again, stir standby after 10 minutes;
The high-strength light thermofin: the corundum bollow ball aglite is mixed with wedding agent in proportion, adds 325 purpose powders then in proportion, stir 10 minutes standby.
(2) moulding: finish after the batching, with dividing plate the material chamber of forming mould is divided into two portions, the length dimension ratio of heavy working lining and high-strength light thermofin is 5: 1, and reinforced back is extracted dividing plate out, adopts the compression moulding of vibration press.
(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 1600 ℃ of insulations in 3 hours.
Embodiment 2:
Feed particles grating and quality percentage composition thereof that present embodiment heavy working lining is adopted are:
Figure BDA0000066432090000052
Wherein, raw materials used is the Yichang forsterite, and the trade mark is silica and the electrosmelted magnesite clinker of GS-98.5.
By said ratio, the quality percentage composition MgO% of gained heavy components of working layer is 50%, SiO 2% is 43%, 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 60%, light-weight mullite aggregate 10%, 325 order forsterite 30%, add wedding agent spent pulping liquor 6%, Al in the wherein used corundum bollow ball 2O 3The composition quality percentage composition is 95%, composition quality percentage composition Al in the light-weight mullite aggregate 2O 3Be 65%.
White olivine structural heat-insulation integrative composite brick manufacture method may further comprise the steps:
(1) batching:
Heavy working lining: earlier particles of aggregates and wedding agent are prepared in proportion and mix in ball mill, add 325 purpose powders again, stir standby after 30 minutes;
The high-strength light thermofin: corundum bollow ball and light-weight mullite aggregate are mixed with wedding agent in proportion, add 325 purpose powders then in proportion, stir 30 minutes standby.
(2) moulding: finish after the batching, with dividing plate the material chamber of forming mould is divided into two portions, the length dimension ratio of heavy working lining and high-strength light thermofin is 3: 2, and reinforced back is extracted dividing plate out, adopts the compression moulding of vibration press.
(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 1550 ℃ of insulations in 8 hours.
Embodiment 3:
Feed particles grating and quality percentage composition thereof that present embodiment heavy working lining is adopted are:
Figure BDA0000066432090000061
Wherein, raw materials used is the silica and the electrosmelted magnesite clinker of Yichang forsterite.
By said ratio, the quality percentage composition MgO% of gained heavy components of working layer is 51%, SiO 2% is 30%, 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%, lightweight bauxites aggregate 15%, 325 order forsterite 45%, add wedding agent spent pulping liquor 10%, Al in the wherein used corundum bollow ball 2O 3The composition quality percentage composition is 93%, composition quality percentage composition Al in the lightweight bauxites aggregate 2O 3Be 70%.
White olivine structural heat-insulation integrative composite brick manufacture method may further comprise the steps:
(1) batching:
Heavy working lining: earlier particles of aggregates and wedding agent are prepared in proportion and mix in ball mill, add 325 purpose powders again, stir standby after 20 minutes;
The high-strength light thermofin: corundum bollow ball and lightweight bauxites aggregate are mixed with wedding agent in proportion, add 325 purpose powders then in proportion, stir 20 minutes standby.
(2) moulding: finish after the batching, with dividing plate the material chamber of forming mould is divided into two portions, the length dimension ratio of heavy working lining and high-strength light thermofin is 1: 3, and reinforced back is extracted dividing plate out, adopts friction press compression moulding.
(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 1500 ℃ of insulations in 8 hours.
Embodiment 4:
Feed particles grating and quality percentage composition thereof that present embodiment heavy working lining is adopted are:
Figure BDA0000066432090000071
Wherein, raw materials used is that the Yichang forsterite and the trade mark are the silica of GS-98.5.
By said ratio, the quality percentage composition MgO% of gained heavy components of working layer is 47%, SiO 2% is 35%, 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 65%, 325 order forsterites 35%, add wedding agent spent pulping liquor 9%, Al in the wherein used corundum bollow ball 2O 3The composition quality percentage composition is 96%.
White olivine structural heat-insulation integrative composite brick manufacture method may further comprise the steps:
(1) batching:
Heavy working lining: earlier particles of aggregates and wedding agent are prepared in proportion and mix in ball mill, add 325 purpose powders again, stir standby after 10 minutes;
The high-strength light thermofin: the corundum bollow ball aglite is mixed with wedding agent in proportion, adds 325 purpose powders then in proportion, stir 10 minutes standby.
(2) moulding: finish after the batching, with dividing plate the material chamber of forming mould is divided into two portions, the length dimension ratio of heavy working lining and high-strength light thermofin is 2: 1, and reinforced back is extracted dividing plate out, adopts oil press compression moulding.
(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 1580 ℃ of insulations in 6 hours.

Claims (10)

1. white olivine structural heat-insulation integrative composite brick, it is characterized in that: the white olivine structural heat-insulation integrative composite brick comprises white olivine heavy working lining and is the light heat insulation layer of feedstock production with aglite and powder, be composited by heavy working lining and light heat insulation layer, the length dimension ratio of heavy working lining and light heat insulation layer is 1~5: 3~1.
2. white olivine structural heat-insulation integrative composite brick according to claim 1 is characterized in that: the chemical composition quality percentage composition of described heavy working lining is as follows: MgO% is 40~50%, SiO 2% is 30~45%, other compositions that all the other are introduced for raw material.
3. white olivine structural heat-insulation integrative composite brick according to claim 1 and 2 is characterized in that: described heavy working lining is made up of two or more the raw material in forsterite, electrosmelted magnesite clinker, magnesite clinker, the silica.
4. white olivine structural heat-insulation integrative composite brick according to claim 1 and 2 is characterized in that: the aglite in the described light heat insulation layer is made up of in corundum bollow ball, light-weight mullite aggregate, the lightweight bauxites aggregate one or more.
5. white olivine structural heat-insulation integrative composite brick according to claim 4 is characterized in that: in the described light heat insulation layer, the aglite chemical composition 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%, other compositions that all the other are introduced for raw material, other compositions that all the other are introduced for raw material.
6. the preparation method of a white olivine 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:
The chemical composition quality percentage composition of described heavy working lining is as follows: MgO% is 40~50%, SiO 2% is 30~45%, other compositions that all the other are introduced for raw material.To be not more than 325 powder materials earlier and prepare the back in proportion and in ball mill, mix, and mix the back and add the powder mix with adding wedding agent at all the other particless of aggregates again, stir 10~30 minutes.
(2) light heat insulation layer batching:
Aglite in the described light heat insulation layer is made up of in corundum bollow ball, light-weight mullite aggregate, the lightweight bauxites aggregate one or more.Earlier good the aglite weighing, aglite in proportion and add wedding agent and mix, add powder stirring 10~30 minutes then in proportion.
(3) moulding:
Finish after the batching, with dividing plate the material chamber of forming mould is divided into two portions, 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 1500~1600 ℃ of insulations in 3~8 hours.
7. the preparation method of white olivine structural heat-insulation integrative composite brick according to claim 6 is characterized in that: in the described step (3), moulding process is carried out on vibration press, friction press or oil press.
8. according to the preparation method of claim 6 or 7 described forsterite structural heat-insulation integrative 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%, be not more than 325 order fine powders 25~35%, add wedding agent 3~5%.
9. according to the preparation method of claim 6 or 7 described white olivine 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 tap density 0.6~1.0g/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%, adds wedding agent 6~10%.
10. according to the preparation method of claim 6 or 7 described white olivine structural heat-insulation integrative composite bricks, it is characterized in that: the used wedding agent that adds is a kind of in spent pulping liquor, lignin sulfonic acid salts solution, the methocel solution.
CN 201110150684 2011-06-06 2011-06-06 Forsterite structure and thermal insulation integrated composite brick and preparation method thereof Expired - Fee Related CN102285810B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102589290A (en) * 2012-03-15 2012-07-18 浙江大学苏州工业技术研究院 Forsterite four-layered composite brick and manufacturing method thereof
CN106431435A (en) * 2016-09-22 2017-02-22 郑州大学 Porous periclase-forsterite multiphase material and preparation method thereof
CN109627022A (en) * 2019-01-29 2019-04-16 四会市国耀铝业有限公司 A kind of the furnace linings for energy-saving material and preparation method thereof
CN112321281A (en) * 2020-09-02 2021-02-05 瑞泰科技股份有限公司 Composite brick cup and preparation process thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101481250A (en) * 2008-01-09 2009-07-15 中钢集团洛阳耐火材料研究院 Preparation of light forsterite raw material
CN101863673A (en) * 2010-06-07 2010-10-20 长兴锅炉耐火器材厂 Magnesia-alumina spinel structure heat insulation integral composite brick and preparation method thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101481250A (en) * 2008-01-09 2009-07-15 中钢集团洛阳耐火材料研究院 Preparation of light forsterite raw material
CN101863673A (en) * 2010-06-07 2010-10-20 长兴锅炉耐火器材厂 Magnesia-alumina spinel structure heat insulation integral composite brick and preparation method thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102589290A (en) * 2012-03-15 2012-07-18 浙江大学苏州工业技术研究院 Forsterite four-layered composite brick and manufacturing method thereof
CN102589290B (en) * 2012-03-15 2014-04-09 浙江大学苏州工业技术研究院 Forsterite four-layered composite brick and manufacturing method thereof
CN106431435A (en) * 2016-09-22 2017-02-22 郑州大学 Porous periclase-forsterite multiphase material and preparation method thereof
CN109627022A (en) * 2019-01-29 2019-04-16 四会市国耀铝业有限公司 A kind of the furnace linings for energy-saving material and preparation method thereof
CN112321281A (en) * 2020-09-02 2021-02-05 瑞泰科技股份有限公司 Composite brick cup and preparation process thereof
CN112321281B (en) * 2020-09-02 2022-05-27 瑞泰科技股份有限公司 Composite brick cup and preparation process thereof

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