CN107311616A - A kind of high strength/fire proof insulating brick and preparation method thereof - Google Patents
A kind of high strength/fire proof insulating brick and preparation method thereof Download PDFInfo
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- CN107311616A CN107311616A CN201710469891.9A CN201710469891A CN107311616A CN 107311616 A CN107311616 A CN 107311616A CN 201710469891 A CN201710469891 A CN 201710469891A CN 107311616 A CN107311616 A CN 107311616A
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- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
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- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
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Abstract
A kind of high strength/fire proof insulating brick, it is characterised in that：The high strength/fire proof insulating brick includes inner core, strengthening layer, fireprotection layer, the transition zone, strengthening layer, fireprotection layer are coated on outside the inner core successively, the inner core is 200 × 120 × 25mm Filled Rectangle structure, the strengthening layer thickness is 10 20mm, the fireprotection layer thickness is 8 15mm, the present invention has good insulated fire performance using the obtained insulating brick of three-decker design, and excellent in mechanical performance, thermal conductivity factor is less than 0.35W/mK, compression strength is more than 26.7MPa, tensile strength is more than 5.72MPa, and water absorption rate is less than 1%.
Description
Technical field
The present invention relates to insulating brick technical field, and in particular to a kind of high strength/fire proof insulating brick and preparation method thereof.
Background technology
For a long time, clay solid brick is not only damaged every year as the maximum most important materials for wall of building trade consumption
A large amount of soils, and destroy ecological environment.The novel wall material that actively development is saved, saved land, profit is useless replaces traditional reality
Heart clay brick, for transforming mode of economic growth, promotes China's building materials industry and construction industry technological progress, with significant society's effect
Benefit and economic benefit.Meanwhile, the continuous improvement with the popularization and people of building energy conservation to living environment comfortableness demand, insulation
Material is increasingly attracted widespread attention.
Existing thermal-insulating type composite brick or building block, which mainly have, inlays insulation material, sets heat preservation sandwich layer or insulation hole, ditch etc.
Diversified forms.As Patent No. CN 201310705456.3 Chinese patent discloses a kind of insulating brick, it is characterised in that it by
Two parts are constituted, and are formed outside brick body by shale sintering, inside filling expanded perlite.The invention fundamentally changes tradition
The uninsulated situation of fired common brick, reaches energy-conserving and environment-protective purpose, but the insulating brick hardness prepared by the invention is little, insulation
Effect is limited, the strong influence service life and quality of insulating brick.
The content of the invention
For above-mentioned problem, the present invention proposes a kind of high strength/fire proof insulating brick and preparation method thereof, using three
The obtained insulating brick of Rotating fields design has good insulated fire performance, and excellent in mechanical performance, and thermal conductivity factor is less than
0.35W/mK, compression strength is more than 26.7MPa, and tensile strength is more than 5.72MPa, and water absorption rate is less than 1%.
In order to realize above-mentioned purpose, the present invention uses following technical scheme：
A kind of high strength/fire proof insulating brick, the high strength/fire proof insulating brick includes inner core, strengthening layer, fireprotection layer, the transition
Layer, strengthening layer, fireprotection layer are coated on outside the inner core successively, and the inner core is 200 × 120 × 25mm Filled Rectangle structure,
The strengthening layer thickness is 10-20mm, and the fireprotection layer thickness is 8-15mm.
It is preferred that, the inner core is constituted including following parts by weight raw material：40-60 parts of bentonite mine tailing, lime white 10-17
It is part, 5-20 parts of shale, 15-18 parts of polycrystalline mullite fibre, 16-22 parts of obsidian, 15-30 parts of rice husk, 6-15 parts of charcoal powder, viscous
Native 10-15 parts, 5-10 parts of aluminium isopropoxide, 10-12 parts of talcum powder.
It is preferred that, the inner core preparation process is as follows：First bentonite mine tailing, shale, obsidian are placed in disintegrating machine and broken
Particle diameter is broken to less than 2mm, magnetic separation is then carried out, obtains mixture one standby；By mixture one, clay, talcum powder blending, ball is placed in
Ball milling 7-8h in grinding machine, then carries out magnetic separation, obtains mixture two standby；It is small by particle diameter is crushed in rice husk feeding high speed disintegrator
In 0.25mm, then it is added in mixture two with other surplus stocks, appropriate water is injected, it is well mixed that slurry is standby
With；Slurry is injected in mould, takes out in base substrate feeding tunnel cave and sinters after drying, take out cooling and produce inner core.
It is preferred that, sintering is specially first to sinter 3-5h under the conditions of 1200 ± 20 DEG C, then heats to 1550 ± 10 DEG C, burning
The knot time is 8-9h.
It is preferred that, the strengthening layer is constituted including following percentage composition raw material：Stomata shape basalt 5-20%, cement 0-
12%th, haydite 5-10%, waterglass 5-12%, rare earth oxide 3-6%, bentonite mine tailing surplus.
It is preferred that, the rare earth oxide is mol ratio 0.8:1 ytterbium oxide and the mixture of cerium oxide.
It is preferred that, the fireprotection layer is constituted including following percentage composition raw material：Graphite powder 8-15%, granular polystyrene 10-
18%th, flake asbestos 20-35%, cement 0-7%, bentonite mine tailing surplus.
It is preferred that, the high strength/fire proof insulating brick is made of multi-steps sintering, and preparation process is as follows：
1) strengthening layer raw material is blended, adds appropriate water and be placed in ball milling 10-12h in ball mill, material must be strengthened after taking-up
Slurry is standby；Fireprotection layer raw material is blended, appropriate water is added and is placed in ball milling 6-7h in ball mill, the slurry that must be prevented fires after taking-up is standby
With；
2) by inner core outer layer pressure injection cladding reinforcing slurry, sintering in kiln is then fed into, sintering temperature is 1350-1420 DEG C,
Sintering time is that 5-8h obtains first product；
3) by first product outer layer pressure injection cladding fire prevention slurry, then sintered in kiln, sintering temperature is 1450-1480 DEG C, sintering
Time is that 10-15h obtains finished product.
Due to using above-mentioned technical scheme, the beneficial effects of the invention are as follows：
1) present invention has good insulated fire performance using the obtained insulating brick of three-decker design, is forged by segmentation
Structural integrity is stronger between burning obtained insulating brick-layer, and raw material sintering uniformity is good；
2) by polycrystalline mullite fibre, rice husk, charcoal powder, stomata shape basalt, rare earth oxide, granular polystyrene, asbestos
On the one hand powder equal distribution ensure that insulation porosity in each interlayer, on the other hand improve interlayer reinforcing degree；
3) three layers using bentonite mine tailing as one of primary raw material, on the one hand improves the utilization rate of useless mine tailing, economizes on resources,
Cost is reduced, is on the other hand conducive to Coating combination, adhesion is got close in raising.
4) insulating brick made from is less than 0.35W/mK, compression strength through performance test, excellent in mechanical performance, thermal conductivity factor
More than 26.7MPa, tensile strength is more than 5.72MPa, and water absorption rate is less than 1% (above-mentioned data are by obtained by embodiment Product checking).
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention,
Technical scheme in the embodiment of the present invention is clearly and completely described.Based on embodiments of the invention, the common skill in this area
The every other embodiment that art personnel are obtained under the premise of creative work is not made, belongs to the model that the present invention is protected
Enclose.
Embodiment 1:
A kind of high strength/fire proof insulating brick, it is characterised in that：The high strength/fire proof insulating brick includes inner core, strengthening layer, fire prevention
Layer, the transition zone, strengthening layer, fireprotection layer are coated on outside the inner core successively, and the inner core is 200 × 120 × 25mm reality
Heart rectangular configuration, the strengthening layer thickness is 10-20mm, and the fireprotection layer thickness is 8-15mm.
The inner core is constituted including following parts by weight raw material：45 parts of bentonite mine tailing, 15 parts of lime white, 15 parts of shale,
16 parts of polycrystalline mullite fibre, 18 parts of obsidian, 15 parts of rice husk, 8 parts of charcoal powder, 10 parts of clay, 10 parts of aluminium isopropoxide, talcum powder
10 parts；Inner core preparation process is as follows：First bentonite mine tailing, shale, obsidian are placed in disintegrating machine and is crushed to particle diameter and is less than
2mm, then carries out magnetic separation, obtains mixture one standby；By mixture one, clay, talcum powder blending, ball milling in ball mill is placed in
8h, then carries out magnetic separation, obtains mixture two standby；Rice husk is sent into high speed disintegrator and is crushed to particle diameter less than 0.25mm, so
It is added in mixture two with other surplus stocks afterwards, appropriate water is injected, it is well mixed that slurry is standby；Slurry is injected
Take out in base substrate feeding tunnel cave and sinter in mould, after drying, be specially that 4h, Ran Housheng are first sintered under the conditions of 1200 ± 20 DEG C
Temperature is to 1550 ± 10 DEG C, and sintering time is 8.5h, takes out cooling and produces inner core.
The strengthening layer is constituted including following percentage composition raw material：Stomata shape basalt 15%, cement 10%, haydite
10%th, waterglass 10%, rare earth oxide 4%, bentonite mine tailing surplus.Wherein, rare earth oxide is mol ratio 0.8:1 oxygen
Change the mixture of ytterbium and cerium oxide.
The fireprotection layer is constituted including following percentage composition raw material：Graphite powder 12%, granular polystyrene 12%, flake asbestos
25%th, cement 0%, bentonite mine tailing surplus.
The high strength/fire proof insulating brick is made of multi-steps sintering, and preparation process is as follows：
1) strengthening layer raw material is blended, the appropriate water of addition, which is placed in magnetic separation after ball milling 11h in ball mill, taking-up, must strengthen material
Slurry is standby；Fireprotection layer raw material is blended, adding appropriate water and being placed in magnetic separation after ball milling 6.5h in ball mill, taking-up must prevent fires slurry
It is standby；
2) by inner core outer layer pressure injection cladding reinforcing slurry, sintering in kiln is then fed into, sintering temperature is 1350 DEG C, during sintering
Between obtain first product for 6.5h；
3) by first product outer layer pressure injection cladding fire prevention slurry, then sintered in kiln, sintering temperature is 1460 DEG C, sintering time is
13h obtains finished product.
Embodiment 2:
A kind of high strength/fire proof insulating brick, it is characterised in that：The high strength/fire proof insulating brick includes inner core, strengthening layer, fire prevention
Layer, the transition zone, strengthening layer, fireprotection layer are coated on outside the inner core successively, and the inner core is 200 × 120 × 25mm reality
Heart rectangular configuration, the strengthening layer thickness is 10-20mm, and the fireprotection layer thickness is 8-15mm.
The inner core is constituted including following parts by weight raw material：50 parts of bentonite mine tailing, 12 parts of lime white, 20 parts of shale,
17 parts of polycrystalline mullite fibre, 20 parts of obsidian, 25 parts of rice husk, 12 parts of charcoal powder, 12 parts of clay, 8 parts of aluminium isopropoxide, talcum powder
12 parts；Inner core preparation process is as follows：First bentonite mine tailing, shale, obsidian are placed in disintegrating machine and is crushed to particle diameter and is less than
2mm, then carries out magnetic separation, obtains mixture one standby；By mixture one, clay, talcum powder blending, ball milling in ball mill is placed in
7.5h, then carries out magnetic separation, obtains mixture two standby；Rice husk is sent into high speed disintegrator and is crushed to particle diameter less than 0.25mm,
Then it is added in mixture two with other surplus stocks, injects appropriate water, it is well mixed that slurry is standby；Slurry is noted
Enter in mould, take out in base substrate feeding tunnel cave and sinter after drying, be specially that 5h is first sintered under the conditions of 1200 ± 20 DEG C, then
1550 ± 10 DEG C are warming up to, sintering time is 8.5h, take out cooling and produce inner core.
The strengthening layer is constituted including following percentage composition raw material：Stomata shape basalt 20%, cement 8%, haydite 8%,
Waterglass 12%, rare earth oxide 4%, bentonite mine tailing surplus.Wherein, rare earth oxide is mol ratio 0.8:1 ytterbium oxide
With the mixture of cerium oxide.
The fireprotection layer is constituted including following percentage composition raw material：Graphite powder 10%, granular polystyrene 16%, flake asbestos
30%th, cement 4%, bentonite mine tailing surplus.
The high strength/fire proof insulating brick is made of multi-steps sintering, and preparation process is as follows：
1) strengthening layer raw material is blended, the appropriate water of addition, which is placed in magnetic separation after ball milling 10h in ball mill, taking-up, must strengthen material
Slurry is standby；Fireprotection layer raw material is blended, adding appropriate water, to be placed in the slurry that must prevent fires of magnetic separation after ball milling 7h in ball mill, taking-up standby
With；
2) by inner core outer layer pressure injection cladding reinforcing slurry, sintering in kiln is then fed into, sintering temperature is 1400 DEG C, during sintering
Between obtain first product for 8h；
3) by first product outer layer pressure injection cladding fire prevention slurry, then sintered in kiln, sintering temperature is 1450 DEG C, sintering time is
15h obtains finished product.
Embodiment 3:
A kind of high strength/fire proof insulating brick, it is characterised in that：The high strength/fire proof insulating brick includes inner core, strengthening layer, fire prevention
Layer, the transition zone, strengthening layer, fireprotection layer are coated on outside the inner core successively, and the inner core is 200 × 120 × 25mm reality
Heart rectangular configuration, the strengthening layer thickness is 10-20mm, and the fireprotection layer thickness is 8-15mm.
The inner core is constituted including following parts by weight raw material：55 parts of bentonite mine tailing, 17 parts of lime white, 15 parts of shale,
15 parts of polycrystalline mullite fibre, 20 parts of obsidian, 20 parts of rice husk, 10 parts of charcoal powder, 14 parts of clay, 8 parts of aluminium isopropoxide, talcum powder
11 parts；Inner core preparation process is as follows：First bentonite mine tailing, shale, obsidian are placed in disintegrating machine and is crushed to particle diameter and is less than
2mm, then carries out magnetic separation, obtains mixture one standby；By mixture one, clay, talcum powder blending, ball milling in ball mill is placed in
7.5h, then carries out magnetic separation, obtains mixture two standby；Rice husk is sent into high speed disintegrator and is crushed to particle diameter less than 0.25mm,
Then it is added in mixture two with other surplus stocks, injects appropriate water, it is well mixed that slurry is standby；Slurry is noted
Enter in mould, take out in base substrate feeding tunnel cave and sinter after drying, be specially that 5h is first sintered under the conditions of 1200 ± 20 DEG C, then
1550 ± 10 DEG C are warming up to, sintering time is 9h, take out cooling and produce inner core.
The strengthening layer is constituted including following percentage composition raw material：Stomata shape basalt 10%, cement 5%, haydite 5%,
Waterglass 5%, rare earth oxide 6%, bentonite mine tailing surplus.Wherein, rare earth oxide is mol ratio 0.8:1 ytterbium oxide and
The mixture of cerium oxide.
The fireprotection layer is constituted including following percentage composition raw material：Graphite powder 8%, granular polystyrene 18%, flake asbestos 35%,
Cement 7%, bentonite mine tailing surplus.
The high strength/fire proof insulating brick is made of multi-steps sintering, and preparation process is as follows：
1) strengthening layer raw material is blended, the appropriate water of addition, which is placed in magnetic separation after ball milling 12h in ball mill, taking-up, must strengthen material
Slurry is standby；Fireprotection layer raw material is blended, adding appropriate water, to be placed in the slurry that must prevent fires of magnetic separation after ball milling 7h in ball mill, taking-up standby
With；
2) by inner core outer layer pressure injection cladding reinforcing slurry, sintering in kiln is then fed into, sintering temperature is 1420 DEG C, during sintering
Between obtain first product for 7h；
3) by first product outer layer pressure injection cladding fire prevention slurry, then sintered in kiln, sintering temperature is 1480 DEG C, sintering time is
12h obtains finished product.
Embodiment 4:
A kind of high strength/fire proof insulating brick, it is characterised in that：The high strength/fire proof insulating brick includes inner core, strengthening layer, fire prevention
Layer, the transition zone, strengthening layer, fireprotection layer are coated on outside the inner core successively, and the inner core is 200 × 120 × 25mm reality
Heart rectangular configuration, the strengthening layer thickness is 10-20mm, and the fireprotection layer thickness is 8-15mm.
The inner core is constituted including following parts by weight raw material：60 parts of bentonite mine tailing, 10 parts of lime white, 10 parts of shale,
16 parts of polycrystalline mullite fibre, 22 parts of obsidian, 30 parts of rice husk, 15 parts of charcoal powder, 15 parts of clay, 6 parts of aluminium isopropoxide, talcum powder
10 parts；Inner core preparation process is as follows：First bentonite mine tailing, shale, obsidian are placed in disintegrating machine and is crushed to particle diameter and is less than
2mm, then carries out magnetic separation, obtains mixture one standby；By mixture one, clay, talcum powder blending, ball milling in ball mill is placed in
7h, then carries out magnetic separation, obtains mixture two standby；Rice husk is sent into high speed disintegrator and is crushed to particle diameter less than 0.25mm, so
It is added in mixture two with other surplus stocks afterwards, appropriate water is injected, it is well mixed that slurry is standby；Slurry is injected
Take out in base substrate feeding tunnel cave and sinter in mould, after drying, be specially that 3h, Ran Housheng are first sintered under the conditions of 1200 ± 20 DEG C
Temperature is to 1550 ± 10 DEG C, and sintering time is 9h, takes out cooling and produces inner core.
The strengthening layer is constituted including following percentage composition raw material：Stomata shape basalt 15%, cement 0%, haydite 5%,
Waterglass 8%, rare earth oxide 5%, bentonite mine tailing surplus.Wherein, rare earth oxide is mol ratio 0.8:1 ytterbium oxide and
The mixture of cerium oxide.
The fireprotection layer is constituted including following percentage composition raw material：Graphite powder 15%, granular polystyrene 10%, flake asbestos
35%th, cement 0%, bentonite mine tailing surplus.
The high strength/fire proof insulating brick is made of multi-steps sintering, and preparation process is as follows：
1) strengthening layer raw material is blended, the appropriate water of addition, which is placed in magnetic separation after ball milling 12h in ball mill, taking-up, must strengthen material
Slurry is standby；Fireprotection layer raw material is blended, adding appropriate water and being placed in magnetic separation after ball milling 6.5h in ball mill, taking-up must prevent fires slurry
It is standby；
2) by inner core outer layer pressure injection cladding reinforcing slurry, sintering in kiln is then fed into, sintering temperature is 1380 DEG C, during sintering
Between obtain first product for 5h；
3) by first product outer layer pressure injection cladding fire prevention slurry, then sintered in kiln, sintering temperature is 1480 DEG C, sintering time is
10h obtains finished product.
Embodiment 5:
A kind of high strength/fire proof insulating brick, it is characterised in that：The high strength/fire proof insulating brick includes inner core, strengthening layer, fire prevention
Layer, the transition zone, strengthening layer, fireprotection layer are coated on outside the inner core successively, and the inner core is 200 × 120 × 25mm reality
Heart rectangular configuration, the strengthening layer thickness is 10-20mm, and the fireprotection layer thickness is 8-15mm.
The inner core is constituted including following parts by weight raw material：It is 40 parts of bentonite mine tailing, 14 parts of lime white, 5 parts of shale, many
Brilliant 18 parts of mullite fiber, 16 parts of obsidian, 25 parts of rice husk, 6 parts of charcoal powder, 10 parts of clay, 5 parts of aluminium isopropoxide, talcum powder 12
Part；Inner core preparation process is as follows：First bentonite mine tailing, shale, obsidian are placed in disintegrating machine and are crushed to particle diameter less than 2mm,
Then magnetic separation is carried out, mixture one is obtained standby；By mixture one, clay, talcum powder blending, ball milling 7h in ball mill is placed in, so
After carry out magnetic separation, obtain mixture two standby；Rice husk is sent into high speed disintegrator and is crushed to particle diameter less than 0.25mm, then by it
Added with other surplus stocks in mixture two, inject appropriate water, it is well mixed that slurry is standby；Slurry is injected into mould
In, take out in base substrate feeding tunnel cave and sinter after drying, be specially first to sinter 4h under the conditions of 1200 ± 20 DEG C, then heat to
1550 ± 10 DEG C, sintering time is 8h, takes out cooling and produces inner core.
The strengthening layer is constituted including following percentage composition raw material：Stomata shape basalt 5%, cement 12%, haydite 6%,
Waterglass 10%, rare earth oxide 3%, bentonite mine tailing surplus.Wherein, rare earth oxide is mol ratio 0.8:1 ytterbium oxide
With the mixture of cerium oxide.
The fireprotection layer is constituted including following percentage composition raw material：Graphite powder 8%, granular polystyrene 15%, flake asbestos 30%,
Cement 5%, bentonite mine tailing surplus.
The high strength/fire proof insulating brick is made of multi-steps sintering, and preparation process is as follows：
1) strengthening layer raw material is blended, the appropriate water of addition, which is placed in magnetic separation after ball milling 11h in ball mill, taking-up, must strengthen material
Slurry is standby；Fireprotection layer raw material is blended, adding appropriate water, to be placed in the slurry that must prevent fires of magnetic separation after ball milling 6h in ball mill, taking-up standby
With；
2) by inner core outer layer pressure injection cladding reinforcing slurry, sintering in kiln is then fed into, sintering temperature is 1400 DEG C, during sintering
Between obtain first product for 7.5h；
3) by first product outer layer pressure injection cladding fire prevention slurry, then sintered in kiln, sintering temperature is 1470 DEG C, sintering time is
12h obtains finished product.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
The present invention is described in detail, it will be understood by those within the art that：It still can be to foregoing each implementation
Technical scheme described in example is modified, or carries out equivalent substitution to which part technical characteristic；And these modification or
Replace, the essence of appropriate technical solution is departed from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (8)
1. a kind of high strength/fire proof insulating brick, it is characterised in that：The high strength/fire proof insulating brick includes inner core, strengthening layer, fireprotection layer,
The transition zone, strengthening layer, fireprotection layer are coated on outside the inner core successively, and the inner core is 200 × 120 × 25mm solid square
Shape structure, the strengthening layer thickness is 10-20mm, and the fireprotection layer thickness is 8-15mm.
2. high strength/fire proof insulating brick according to claim 1, it is characterised in that：It is former that the inner core includes following parts by weight
Material composition：40-60 parts of bentonite mine tailing, 10-17 parts of lime white, 5-20 parts of shale, 15-18 parts of polycrystalline mullite fibre, black sunlight
16-22 parts of rock, 15-30 parts of rice husk, 6-15 parts of charcoal powder, 10-15 parts of clay, 5-10 parts of aluminium isopropoxide, 10-12 parts of talcum powder.
3. high strength/fire proof insulating brick according to claim 2, it is characterised in that the inner core preparation process is as follows：First will
Bentonite mine tailing, shale, obsidian, which are placed in disintegrating machine, is crushed to particle diameter less than 2mm, then carries out magnetic separation, obtains mixture one standby
With；By mixture one, clay, talcum powder blending, ball milling 7-8h in ball mill is placed in, magnetic separation is then carried out, mixture two is obtained standby
With；Rice husk is sent into high speed disintegrator and is crushed to particle diameter less than 0.25mm, then it is added with other surplus stocks and mixed
In thing two, appropriate water is injected, it is well mixed that slurry is standby；Slurry is injected in mould, base substrate feeding tunnel is taken out after drying
Sintered in road kiln, take out cooling and produce inner core.
4. high strength/fire proof insulating brick according to claim 3, it is characterised in that：Sintering is specially first in 1200 ± 20 DEG C of bars
3-5h is sintered under part, 1550 ± 10 DEG C are then heated to, sintering time is 8-9h.
5. high strength/fire proof insulating brick according to claim 1, it is characterised in that the strengthening layer includes following percentage composition
Raw material is constituted：Stomata shape basalt 5-20%, cement 0-12%, haydite 5-10%, waterglass 5-12%, rare earth oxide 3-
6%th, bentonite mine tailing surplus.
6. high strength/fire proof insulating brick according to claim 5, it is characterised in that：The rare earth oxide is mol ratio 0.8:
1 ytterbium oxide and the mixture of cerium oxide.
7. high strength/fire proof insulating brick according to claim 1, it is characterised in that the fireprotection layer includes following percentage composition
Raw material is constituted：Graphite powder 8-15%, granular polystyrene 10-18%, flake asbestos 20-35%, cement 0-7%, bentonite mine tailing surplus.
8. the high strength/fire proof insulating brick according to claim any one of 1-7, it is characterised in that the high strength/fire proof insulating brick
It is made of multi-steps sintering, preparation process is as follows：
1) strengthening layer raw material is blended, the appropriate water of addition, which is placed in magnetic separation after ball milling 10-12h in ball mill, taking-up, must strengthen material
Slurry is standby；Fireprotection layer raw material is blended, adding appropriate water and being placed in magnetic separation after ball milling 6-7h in ball mill, taking-up must prevent fires slurry
It is standby；
2) by inner core outer layer pressure injection cladding reinforcing slurry, sintering in kiln is then fed into, sintering temperature is 1350-1420 DEG C, sintering
Time is that 5-8h obtains first product；
3) by first product outer layer pressure injection cladding fire prevention slurry, then sintered in kiln, sintering temperature is 1450-1480 DEG C, sintering time
Finished product is obtained for 10-15h.
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| CN201710469891.9A CN107311616A (en) | 2017-06-20 | 2017-06-20 | A kind of high strength/fire proof insulating brick and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108358657A (en) * | 2018-02-08 | 2018-08-03 | 合肥梵腾环保科技有限公司 | A kind of fire prevention resistance to compression insulating brick and preparation method thereof |
| CN109320261A (en) * | 2018-10-31 | 2019-02-12 | 南京帅瑞科技有限公司 | A kind of light-weight insulating brick and its process for calcining |
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| JPH01215742A (en) * | 1988-02-23 | 1989-08-29 | Nippon Kouatsu Electric Co | Heat-insulation material and production thereof |
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