CN105669221B - A kind of composite refractory brick containing expanded and vitrified small ball - Google Patents
A kind of composite refractory brick containing expanded and vitrified small ball Download PDFInfo
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- CN105669221B CN105669221B CN201610011283.9A CN201610011283A CN105669221B CN 105669221 B CN105669221 B CN 105669221B CN 201610011283 A CN201610011283 A CN 201610011283A CN 105669221 B CN105669221 B CN 105669221B
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
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- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
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- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
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- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
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- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
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- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/428—Silicon
Abstract
The present invention relates to a kind of composite refractory bricks containing expanded and vitrified small ball; including heavy flame retardant coating and lightweight thermal insulation layer, the heavy flame retardant coating includes: fused white corundum 20wt%~50wt%, electrofused mullite 10wt%~30wt%, andalusite 10wt%~25wt%, silicon carbide 10wt%~20wt%, clay 6wt%~15wt%, alumina powder 4wt%~10wt%, calcium lignosulfonate 3wt%~6wt%, yellow starch gum 1wt%~3wt%, silicon powder 1wt%~4wt%；The lightweight thermal insulation layer includes: fused white corundum 8wt%~30wt%, electrofused mullite 9wt%~25wt%, andalusite 4wt%~15wt%, silicon carbide 10wt%~20wt%, clay 6wt%~15wt%, alumina powder 4wt%~10wt%, calcium lignosulfonate 3wt%~6wt%, yellow starch gum 1wt%~3wt%, silicon powder 1wt%~4wt%；The lightweight thermal insulation layer also includes the expanded and vitrified small ball of 15wt%~25wt%.The invention further relates to a kind of production technologies of the composite refractory brick containing expanded and vitrified small ball.The present invention overcomes because material composition it is different caused by faying face easy fracture the problem of, a kind of composite refractory brick and its production technology containing expanded and vitrified small ball is provided.
Description
Technical field
The present invention relates to fire resisting material field more particularly to a kind of composite refractory bricks containing expanded and vitrified small ball.
Background technique
China's economic development is rapid, and the development of production of energy relatively lags behind much.China's economy keeps 9% increasing for a long time
Long speed, and disposable production of energy amount growth rate is then held only in 4% or so.Another method for solving energy shortage is section
Can, that is, the utilization efficiency for reducing heat loss, improving thermal energy reduces energy waste.Energy conservation project is considered as " the 5th energy in the world
Source ", meaning are particularly significant.It is calculated according to national departments concerned, all kinds of kilns in China and heat supply pipeline are not good at due to keeping the temperature, every year
Equivalent about 3000~40,000,000 tons of coal of the mark of heat loss.Be transformed using novel heat insulation technology and equipment, make these kilns and
Heat supply pipeline reduce heat loss 20~30% be it is entirely possible, this will make China saves every year mark coal 600~8,000,000 ton.
The accumulation of heat and radiation loss of liner of industry kiln heat-insulating material typically constitute from the 20~45% of Industrial Stoves total energy consumption.
Traditional industry stove is to achieve the purpose that heat preservation energy-saving, is usually constructed in heavy refractory brick marshalling or heavy unshape refractory
It is external to increase insulating layer.Due to needing two layers of masonry, the time of construction and expense is caused to increase, and kiln volume becomes huge
Greatly, heavy.
Disclosed on March 25th, 2015 application No. is 201420551368.2 utility model disclose it is a kind of compound resistance to
Firebrick structure combines heavy material thermal insulation layer and light material insulating layer by concave-convex faying face, in same masonry
On realize it is heat-insulated and heat preservation effect, reduce time and the expense of construction, but also kiln body need not become bulky and hulking.
But such combination, due to two composition of layer difference, Thermal Contraction Coefficient difference is larger, be easy to cause faying face disconnected in use
It splits, is easy to appear accident, the continuous production for being also unfavorable for factory obtains its maximum economic benefit.
Summary of the invention
The purpose of the present invention is in view of the deficiencies of the prior art, overcome because material composition difference causes faying face easily broken
The problem of splitting provides a kind of composite refractory brick containing expanded and vitrified small ball.
A kind of composite refractory brick containing expanded and vitrified small ball, including heavy flame retardant coating and lightweight thermal insulation layer.The heavy is resistance to
The material of fire bed and the main material of lightweight thermal insulation layer are completely the same, and the heavy flame retardant coating includes: fused white corundum 20wt%
~50wt%, electrofused mullite 10wt%~30wt%, andalusite 10wt%~25wt%, silicon carbide 10wt%~20wt%,
Clay 6wt%~15wt%, alumina powder 4wt%~10wt%, calcium lignosulfonate 3wt%~6wt%, yellow starch gum 1wt%~3wt%,
Silicon powder 1wt%~4wt%；The lightweight thermal insulation layer specifically includes that fused white corundum 8wt%~30wt%, electrofused mullite
9wt%~25wt%, andalusite 4wt%~15wt%, silicon carbide 10wt%~20wt%, clay 6wt%~15wt%, oxidation
Aluminium powder 4wt%~10wt%, calcium lignosulfonate 3wt%~6wt%, yellow starch gum 1wt%~3wt%, silicon powder 1wt%~4wt%；It is described light
Vacuum layer also includes the expanded and vitrified small ball of 15wt%~25wt%；The thickness ratio of the heavy flame retardant coating and lightweight thermal insulation layer
Example is 1~2:3~4；The faying face of the heavy flame retardant coating and lightweight thermal insulation layer is plane faying face, zigzag faying face or recessed
Any one in convex faying face.
As an improvement, the silicon powder is metallurgical level-one, silicone content >=98.5%；Granularity≤0.8 μm of the silicon powder.
As an improvement, the granularity of the alumina powder is 10~20 μm.
As an improvement, the heavy flame retardant coating and lightweight thermal insulation layer are combined together with up-down structure.
As an improvement, the heavy flame retardant coating and lightweight thermal insulation layer are combined together with tiled configuration.
Beneficial effects of the present invention:
(1) the present invention provides a kind of composite refractory bricks containing expanded and vitrified small ball, due to its heavy flame retardant coating and commonly
Heavy refractory brick similar performance has the advantages of common heavy refractory brick resistance to erosion, high temperature resistant, corrosion-resistant and heat shock resistance.
(2) the present invention provides a kind of composite refractory bricks containing expanded and vitrified small ball, due to being added in its lightweight thermal insulation layer
Expanded and vitrified small ball, and expanded and vitrified small ball is light and internal porous has so that lightweight thermal insulation layer thermal conductivity substantially reduces
The advantages of common insulating layer heat preservation, while can be solved compared with common burning loses pore creating material using expanded and vitrified small ball as pore creating material
The certainly common pollution problem burnt during mistake pore creating material burning is lost because of not exclusively combustion baked generation.
(3) the present invention provides a kind of composite refractory bricks containing expanded and vitrified small ball, due to wherein joined silicon carbide, and
The infrared radiation property of silicon carbide is superior, so that composite refractory brick can use the original of infrared radiation under high-temperature work environment
Reason is more effective and uniformly heats to the heated material in kiln, while can reduce the received heat of composite refractory brick；It is multiple
Silicon powder in conjunction refractory brick can be used as reducing agent and silicon carbide effectively avoided to decompose under high temperature and oxidation environment, and it is infrared to reduce its
Radiance.
(4) the present invention provides a kind of composite refractory bricks containing expanded and vitrified small ball, due to its heavy flame retardant coating and lightweight
Insulating layer basis material is consistent, and Thermal Contraction Coefficient is close, so that the stress between two layer components becomes under working condition
Very little, faying face are firmly combined the problem of being less prone to faying face fracture.
(5) the present invention provides a kind of composite refractory bricks containing expanded and vitrified small ball, since it is provided simultaneously with heat-insulated and protects
The effect of temperature reduces time and the expense of construction, also saves material so that only needing one layer of masonry when using and constructing
Material and resource, reduce discharge, while can also further decrease the accumulation of heat and radiation loss of Industrial Stoves.
It is another object of the present invention in view of the deficiencies of the prior art, overcome because material composition difference leads to faying face
The problem of easy fracture, provides a kind of production technology of composite refractory brick containing expanded and vitrified small ball.
A kind of production technology of the composite refractory brick containing expanded and vitrified small ball, comprising: Raw material processing-ingredient-kneading-
Molding-drying-firing-inspection-warehousing finished products, it is characterised in that:
A. in proportioning process, the ingredient of ingredient and lightweight thermal insulation layer including heavy flame retardant coating, heavy flame retardant coating and lightweight
Insulating layer is individually separated carry out ingredient；The heavy flame retardant coating includes: fused white corundum, electrofused mullite, andalusite, carbonization
Silicon, clay, alumina powder, calcium lignosulfonate, yellow starch gum, silicon powder；The lightweight thermal insulation layer includes: fused white corundum, electrofused mullite, red
Pillar, silicon carbide, clay, alumina powder, calcium lignosulfonate, yellow starch gum, silicon powder；The lightweight thermal insulation layer also includes expanded and vitrified small ball；
B. it is kneaded in technique, by the heavy flame retardant coating for completing proportioning process and completes the lightweight thermal insulation layer of proportioning process respectively
Separately it is stirred；
C. it in moulding process, is suppressed by the heavy flame retardant coating by being kneaded technique and by the lightweight thermal insulation layer of calendering process
Integrally, contact surface is formed between heavy flame retardant coating and lightweight thermal insulation layer；
D. in drying process, the drying process is divided into two stages, and the first stage is demoulding drying, drying temperature 60
DEG C, drying time 16h；Second stage is force drying, and drying temperature is 120 DEG C, drying time 12h, adobe after drying
Biodiversity content controls below 6%；
E. in firing process, the composite refractory brick for completing drying process is packed into high temperature kiln, is heated to 1500 from room temperature
DEG C, 8h is kept the temperature, firing process is completed.
As an improvement, the heavy flame retardant coating and lightweight thermal insulation layer are combined together with up-down structure.
As an improvement, the heavy flame retardant coating and lightweight thermal insulation layer are combined together with tiled configuration.
As an improvement, the heavy flame retardant coating and lightweight thermal insulation layer are once suppressed integrally, pressing pressure is 3.2~
3.6t, compacting number are 4~6 times.
Beneficial effects of the present invention:
(1) the present invention provides a kind of production technologies of composite refractory brick containing expanded and vitrified small ball, since its heavy is resistance to
Fire bed and common heavy refractory brick similar performance, have common heavy refractory brick resistance to erosion, high temperature resistant, corrosion-resistant and heat shock resistance
The advantages of.Simultaneously as joined expanded and vitrified small ball in its lightweight thermal insulation layer, and expanded and vitrified small ball is light and internal more
Hole has the advantages of common insulating layer heat preservation, while making so that lightweight thermal insulation layer thermal conductivity substantially reduces with expanded and vitrified small ball
It is pore creating material compared with common burning loses pore creating material, it, can since expanded and vitrified small ball is a kind of environmental protection inorganic light heat-insulating material
To solve the common pollution problem burnt during mistake pore creating material burning is lost because of not exclusively combustion baked generation.In this way, being contained using described one kind
The composite refractory brick containing expanded and vitrified small ball that the production technology of the composite refractory brick of expanded and vitrified small ball is manufactured has simultaneously
Standby heat-insulated and heat preservation effect reduces time and the expense of construction so that only needing one layer of masonry when using and constructing,
Material and resource are also saved, discharge is reduced, while the accumulation of heat and radiation loss of Industrial Stoves can also be further decreased.
(2) the present invention provides a kind of production technologies of composite refractory brick containing expanded and vitrified small ball, since its heavy is resistance to
Fire bed is consistent with lightweight thermal insulation layer basis material, keeps its Thermal Contraction Coefficient close so that under working condition, two layer components it
Between stress become very little, faying face is firmly combined the problem of being less prone to faying face fracture.
(3) the present invention provides a kind of production technologies of composite refractory brick containing expanded and vitrified small ball, due in the present invention
Drying process is dried using two stages, first demoulds drying, this stage raw brick moisture content is big, need to control drying temperature, prevent
Moisture is sharply discharged and causes adobe cracked；Then force drying, control green body moisture reaches requirement, after guaranteeing sintering
The quality of product.Demoulding the dry time simultaneously is 16h, so that faying face can use this period of time and carry out between molecule
It permeates and spreads to further strengthen the bond strength of faying face.
Detailed description of the invention
Illustrate technical solution of the present invention in order to clearer, it below will be to attached drawing needed in embodiment description
It is briefly described, it should be apparent that, drawings discussed below is only some embodiments of the present invention, for the general of this field
For logical technical staff, without creative efforts, it can also be obtained according to these attached drawings other accompanying drawings.
Fig. 1 is the composite fire brick structure A schematic diagram containing expanded and vitrified small ball.
Fig. 2 is the composite fire brick structure B schematic diagram containing expanded and vitrified small ball.
Fig. 3 is the composite refractory brick zigzag faying face schematic shapes containing expanded and vitrified small ball.
Fig. 4 is the composite refractory brick concave-convex faying face schematic shapes containing expanded and vitrified small ball.
Fig. 5 is the composite refractory brick cross-sectional view containing expanded and vitrified small ball.
Label declaration:
1. heavy flame retardant coating, 2. lightweight thermal insulation layers, 3. faying faces.
Specific embodiment
Technical solution of the present invention is clearly and completely illustrated with reference to the accompanying drawing.
Embodiment one
Fig. 1 is the composite fire brick structure A schematic diagram containing expanded and vitrified small ball.As shown in Figure 1, provided in the present embodiment
It is a kind of composite refractory brick containing expanded and vitrified small ball, including heavy flame retardant coating 1 and lightweight thermal insulation layer 2；The heavy flame retardant coating 1
It include: fused white corundum 50wt%, electrofused mullite 15wt%, andalusite 10wt%, silicon carbide 10wt%, clay 6wt%, oxygen
Change aluminium powder 4wt%, calcium lignosulfonate 3wt%, yellow starch gum 1wt%, silicon powder 1wt%；The lightweight thermal insulation layer 2 includes: fused white corundum
30wt%, electrofused mullite 9wt%, andalusite 15wt%, silicon carbide 15wt%, clay 6wt%, alumina powder 4wt%, calcium lignosulfonate
3wt%, yellow starch gum 1wt%, silicon powder 2wt%；The lightweight thermal insulation layer 2 also includes the expanded and vitrified small ball of 15wt%.
The silicon powder is metallurgical level-one, silicone content >=98.5%；Granularity≤0.8 μm of the silicon powder；The aluminium oxide
The granularity of powder is 10 μm；The heavy flame retardant coating 1 and lightweight thermal insulation layer 2 are combined together with up-down structure, and the heavy is resistance to
The faying face 3 of fire bed 1 and lightweight thermal insulation layer 2 is plane faying face, the thickness ratio of the heavy flame retardant coating 1 and lightweight thermal insulation layer 2
Example is 2:3.
Embodiment two
Fig. 2 is that composite fire brick structure B schematic diagram, Fig. 3 containing expanded and vitrified small ball are containing the compound of expanded and vitrified small ball
Refractory brick zigzag faying face schematic shapes, Fig. 5 are the composite refractory brick cross-sectional view containing expanded and vitrified small ball.Such as Fig. 2, Fig. 3
A kind of composite refractory brick containing expanded and vitrified small ball, including 1 He of heavy flame retardant coating are provided and shown in Fig. 5, in the present embodiment
Lightweight thermal insulation layer 2；The faying face 3 of the heavy flame retardant coating 1 and lightweight thermal insulation layer 2 is zigzag faying face；The heavy fire resisting
Layer 1 includes: fused white corundum 20wt%, electrofused mullite 30wt%, andalusite 12wt%, silicon carbide 15wt%, clay
8wt%, alumina powder 6wt%, calcium lignosulfonate 4wt%, yellow starch gum 2wt%, silicon powder 3wt%；The lightweight thermal insulation layer 2 includes: electric smelting
White fused alumina 8wt%, electrofused mullite 25wt%, andalusite 4wt%, silicon carbide 15wt%, clay 9wt%, alumina powder
5wt%, calcium lignosulfonate 6wt%, yellow starch gum 2wt%, silicon powder 1wt%；The lightweight thermal insulation layer 2 also expansion vitrification comprising 25wt% is micro-
Pearl.
The silicon powder is metallurgical level-one, silicone content >=98.5%；Granularity≤0.8 μm of the silicon powder；The aluminium oxide
The granularity of powder is 20 μm；The heavy flame retardant coating 1 and lightweight thermal insulation layer 2 are combined together with tiled configuration, and the heavy is resistance to
The thickness proportion of fire bed 1 and lightweight thermal insulation layer 2 is 1:4.
Embodiment three
Fig. 1 is that composite fire brick structure A schematic diagram, Fig. 4 containing expanded and vitrified small ball are containing the compound of expanded and vitrified small ball
Refractory brick concave-convex faying face schematic shapes.It is provided as shown in Fig. 1 and Fig. 4, in the present embodiment a kind of containing expansion vitrification
The composite refractory brick of microballon, including heavy flame retardant coating 1 and lightweight thermal insulation layer 2；The heavy flame retardant coating 1 and lightweight thermal insulation layer 2
Faying face 3 is concave-convex faying face；The heavy flame retardant coating 1 include: fused white corundum 30wt%, electrofused mullite 11wt%,
Andalusite 11wt%, silicon carbide 10wt%, clay 15wt%, alumina powder 10wt%, calcium lignosulfonate 6wt%, yellow starch gum 3wt%, silicon
Powder 4wt%；The lightweight thermal insulation layer 2 includes: fused white corundum 10wt%, electrofused mullite 10wt%, andalusite 8wt%, carbon
SiClx 20wt%, clay 15wt%, alumina powder 10wt%, calcium lignosulfonate 5wt%, yellow starch gum 3wt%, silicon powder 4wt%；The lightweight
Insulating layer 2 also includes the expanded and vitrified small ball of 15wt%.
The silicon powder is metallurgical level-one, silicone content >=98.5%；Granularity≤0.8 μm of the silicon powder；The aluminium oxide
The granularity of powder is 15 μm；The heavy flame retardant coating 1 and lightweight thermal insulation layer 2 are combined together with up-down structure, and the heavy is resistance to
The thickness proportion of fire bed 1 and lightweight thermal insulation layer 2 is 1:3.
Example IV
Fig. 2 is that composite fire brick structure B schematic diagram, Fig. 4 containing expanded and vitrified small ball are containing the compound of expanded and vitrified small ball
Refractory brick concave-convex faying face schematic shapes.As shown in Figures 2 and 4, it is provided in the present embodiment a kind of containing expansion vitrification
The composite refractory brick of microballon, including heavy flame retardant coating 1 and lightweight thermal insulation layer 2；The heavy flame retardant coating 1 and lightweight thermal insulation layer 2
Faying face 3 is concave-convex faying face；The heavy flame retardant coating 1 include: fused white corundum 28wt%, electrofused mullite 10wt%,
Andalusite 25wt%, silicon carbide 20wt%, clay 7wt%, alumina powder 5wt%, calcium lignosulfonate 3wt%, yellow starch gum 1wt%, silicon powder
1wt%；The lightweight thermal insulation layer 2 includes: fused white corundum 20wt%, electrofused mullite 20wt%, andalusite 5wt%, carbonization
Silicon 10wt%, clay 12wt%, alumina powder 8wt%, calcium lignosulfonate 3wt%, yellow starch gum 1wt%, silicon powder 1wt%；The lightweight is protected
Warm layer 2 also includes the expanded and vitrified small ball of 20wt%.
The silicon powder is metallurgical level-one, silicone content >=98.5%；Granularity≤0.8 μm of the silicon powder；The aluminium oxide
The granularity of powder is 12 μm；The heavy flame retardant coating 1 and lightweight thermal insulation layer 2 are combined together with tiled configuration, and the heavy is resistance to
The thickness proportion of fire bed 1 and lightweight thermal insulation layer 2 is 1:2.
Examples 1 to 4 and the comparison of common composite refractory brick break resistance index are as shown in table 1:
Table 1
Note: the refractory brick specification for comparing five seed types used is identical, is tested under identical condition.
By table 1 this it appears that the composite refractory brick Resisting fractre ability containing expanded and vitrified small ball in embodiment is much higher than
Breaking strength is also much higher than common composite refractory brick under common composite refractory brick, especially high temperature operating conditions, it is made to work
When have excellent Resisting fractre ability, the fracture at faying face can be effectively prevented.
Embodiment five
A kind of production technology of the composite refractory brick containing expanded and vitrified small ball, comprising: Raw material processing-ingredient-kneading-
Molding-drying-firing-inspection-warehousing finished products.
In proportioning process, the ingredient of ingredient and lightweight thermal insulation layer including heavy flame retardant coating, heavy flame retardant coating and lightweight
Insulating layer is individually separated carry out ingredient；The heavy flame retardant coating includes: fused white corundum, electrofused mullite, andalusite, carbonization
Silicon, clay, alumina powder, calcium lignosulfonate, yellow starch gum, silicon powder；The lightweight thermal insulation layer includes: fused white corundum, electrofused mullite, red
Pillar, silicon carbide, clay, alumina powder, calcium lignosulfonate, yellow starch gum, silicon powder；The lightweight thermal insulation layer also includes expanded and vitrified small ball；
Specific proportion is as shown in embodiment one.
In being kneaded technique, by the heavy flame retardant coating for completing proportioning process and the lightweight thermal insulation layer of proportioning process is completed respectively
Separately it is stirred.
In moulding process, suppressed by the heavy flame retardant coating by being kneaded technique and by the lightweight thermal insulation layer of calendering process
Integrally, contact surface is formed between heavy flame retardant coating and lightweight thermal insulation layer.
In drying process, the drying process is divided into two stages, and the first stage is demoulding drying, drying temperature 60
DEG C, drying time 16h；Second stage is force drying, and drying temperature is 120 DEG C, drying time 12h, adobe after drying
Biodiversity content controls below 6%.
In firing process, the composite refractory brick for completing drying process is packed into high temperature kiln, is heated to 1500 from room temperature
DEG C, 8h is kept the temperature, firing process is completed.
The heavy flame retardant coating 1 and lightweight thermal insulation layer 2 are combined together with up-down structure；1 He of heavy flame retardant coating
Once compacting is integral for lightweight thermal insulation layer 2, and pressing pressure 3.2t, compacting number is 6 times.
Embodiment six
A kind of production technology of the composite refractory brick containing expanded and vitrified small ball, comprising: Raw material processing-ingredient-kneading-
Molding-drying-firing-inspection-warehousing finished products.
In proportioning process, the ingredient of ingredient and lightweight thermal insulation layer including heavy flame retardant coating, heavy flame retardant coating and lightweight
Insulating layer is individually separated carry out ingredient；The heavy flame retardant coating includes: fused white corundum, electrofused mullite, andalusite, carbonization
Silicon, clay, alumina powder, calcium lignosulfonate, yellow starch gum, silicon powder；The lightweight thermal insulation layer includes: fused white corundum, electrofused mullite, red
Pillar, silicon carbide, clay, alumina powder, calcium lignosulfonate, yellow starch gum, silicon powder；The lightweight thermal insulation layer also includes expanded and vitrified small ball；
Specific proportion is as shown in embodiment two.
In being kneaded technique, by the heavy flame retardant coating for completing proportioning process and the lightweight thermal insulation layer of proportioning process is completed respectively
Separately it is stirred.
In moulding process, suppressed by the heavy flame retardant coating by being kneaded technique and by the lightweight thermal insulation layer of calendering process
Integrally, contact surface is formed between heavy flame retardant coating and lightweight thermal insulation layer.
In drying process, the drying process is divided into two stages, and the first stage is demoulding drying, drying temperature 60
DEG C, drying time 16h；Second stage is force drying, and drying temperature is 120 DEG C, drying time 12h, adobe after drying
Biodiversity content controls below 6%.
In firing process, the composite refractory brick for completing drying process is packed into high temperature kiln, is heated to 1500 from room temperature
DEG C, 8h is kept the temperature, firing process is completed.
The heavy flame retardant coating 1 and lightweight thermal insulation layer 2 are combined together with tiled configuration；1 He of heavy flame retardant coating
Once compacting is integral for lightweight thermal insulation layer 2, and pressing pressure 3.6t, compacting number is 4 times.
Embodiment seven
A kind of production technology of the composite refractory brick containing expanded and vitrified small ball, comprising: Raw material processing-ingredient-kneading-
Molding-drying-firing-inspection-warehousing finished products.
In proportioning process, the ingredient of ingredient and lightweight thermal insulation layer including heavy flame retardant coating, heavy flame retardant coating and lightweight
Insulating layer is individually separated carry out ingredient；The heavy flame retardant coating includes: fused white corundum, electrofused mullite, andalusite, carbonization
Silicon, clay, alumina powder, calcium lignosulfonate, yellow starch gum, silicon powder；The lightweight thermal insulation layer includes: fused white corundum, electrofused mullite, red
Pillar, silicon carbide, clay, alumina powder, calcium lignosulfonate, yellow starch gum, silicon powder；The lightweight thermal insulation layer also includes expanded and vitrified small ball；
Specific proportion is as shown in embodiment three.
In being kneaded technique, by the heavy flame retardant coating for completing proportioning process and the lightweight thermal insulation layer of proportioning process is completed respectively
Separately it is stirred.
In moulding process, suppressed by the heavy flame retardant coating by being kneaded technique and by the lightweight thermal insulation layer of calendering process
Integrally, contact surface is formed between heavy flame retardant coating and lightweight thermal insulation layer.
In drying process, the drying process is divided into two stages, and the first stage is demoulding drying, drying temperature 60
DEG C, drying time 16h；Second stage is force drying, and drying temperature is 120 DEG C, drying time 12h, adobe after drying
Biodiversity content controls below 6%.
In firing process, the composite refractory brick for completing drying process is packed into high temperature kiln, is heated to 1500 from room temperature
DEG C, 8h is kept the temperature, firing process is completed.
The heavy flame retardant coating 1 and lightweight thermal insulation layer 2 are combined together with up-down structure；1 He of heavy flame retardant coating
Once compacting is integral for lightweight thermal insulation layer 2, and pressing pressure 3.4t, compacting number is 5 times.
The composite refractory brick of the composite refractory brick containing expanded and vitrified small ball and common process manufacture that embodiment 5~7 manufactures
The comparison of break resistance index is as shown in table 2:
Table 2
Note: the refractory brick specification for comparing four seed types used is identical, is tested under identical condition.
By table 2 this it appears that the composite refractory brick Resisting fractre ability containing expanded and vitrified small ball in embodiment is much higher than
The composite refractory brick of common process manufacture, breaking strength is also much higher than answering for common process manufacture especially under high temperature operating conditions
Refractory brick is closed, so that it is had excellent Resisting fractre ability at work, the fracture at faying face can be effectively prevented.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Subject to enclosing.
Claims (9)
1. a kind of composite refractory brick containing expanded and vitrified small ball, including heavy flame retardant coating (1) and lightweight thermal insulation layer (2), feature
Be: the heavy flame retardant coating (1) consists of the following compositions: fused white corundum 20wt%~50wt%, electrofused mullite
10wt%~30wt%, andalusite 10wt%~25wt%, silicon carbide 10wt%~20wt%, clay 6wt%~15wt%, oxygen
Change aluminium powder 4wt%~10wt%, calcium lignosulfonate 3wt%~6wt%, yellow starch gum 1wt%~3wt%, silicon powder 1wt%~4wt%；It is described
Lightweight thermal insulation layer (2) consists of the following compositions: fused white corundum 8wt%~30wt%, electrofused mullite 9wt%~25wt%,
Andalusite 4wt%~15wt%, silicon carbide 10wt%~20wt%, clay 6wt%~15wt%, alumina powder 4wt%~
10wt%, calcium lignosulfonate 3wt%~6wt%, yellow starch gum 1wt%~3wt%, silicon powder 1wt%~4wt% and 15wt%~25wt%
Expanded and vitrified small ball；The thickness proportion of the heavy flame retardant coating (1) and lightweight thermal insulation layer (2) is 1~2:3~4；The heavy is resistance to
The faying face (3) of fire bed (1) and lightweight thermal insulation layer (2) is in plane faying face, zigzag faying face or concave-convex faying face
Any one.
2. a kind of composite refractory brick containing expanded and vitrified small ball as described in claim 1, it is characterised in that: the silicon powder is smelting
Golden level-one, silicone content >=98.5%；Granularity≤0.8 μm of the silicon powder.
3. a kind of composite refractory brick containing expanded and vitrified small ball as described in claim 1, it is characterised in that: the alumina powder
Granularity be 10~20 μm.
4. a kind of composite refractory brick containing expanded and vitrified small ball as described in claim 1, it is characterised in that: the heavy fire resisting
Layer (1) and lightweight thermal insulation layer (2) are combined together with up-down structure.
5. a kind of composite refractory brick containing expanded and vitrified small ball as described in claim 1, it is characterised in that: the heavy fire resisting
Layer (1) and lightweight thermal insulation layer (2) are combined together with tiled configuration.
6. a kind of life of composite refractory brick containing expanded and vitrified small ball as described in Claims 1 to 5 any one claim
Production. art, comprising: Raw material processing-ingredient-kneading-molding-drying-firing-inspection-warehousing finished products, feature exist
In:
A. in proportioning process, the ingredient of ingredient and lightweight thermal insulation layer including heavy flame retardant coating, heavy flame retardant coating and light thermal-insulation
Layer is individually separated carry out ingredient；The heavy flame retardant coating includes: fused white corundum, electrofused mullite, andalusite, silicon carbide, pottery
Soil, alumina powder, calcium lignosulfonate, yellow starch gum, silicon powder；The lightweight thermal insulation layer include: fused white corundum, electrofused mullite, andalusite,
Silicon carbide, clay, alumina powder, calcium lignosulfonate, yellow starch gum, silicon powder；The lightweight thermal insulation layer also includes expanded and vitrified small ball；
B. it is kneaded in technique, the heavy flame retardant coating for completing proportioning process and the lightweight thermal insulation layer for completing proportioning process is individually separated
It is stirred；
C. in moulding process, one is pressed by the heavy flame retardant coating by being kneaded technique and by the lightweight thermal insulation layer of calendering process
Body forms contact surface between heavy flame retardant coating and lightweight thermal insulation layer；
D. in drying process, the drying process is divided into two stages, and the first stage is demoulding drying, and drying temperature is 60 DEG C,
Drying time is 16h；Second stage is force drying, and drying temperature is 120 DEG C, drying time 12h, raw brick moisture content after drying
Mass content controls below 6%；
E. in firing process, the composite refractory brick for completing drying process is packed into high temperature kiln, 1500 DEG C is heated to from room temperature, protects
Warm 8h completes firing process.
7. a kind of production technology of the composite refractory brick containing expanded and vitrified small ball as claimed in claim 6, it is characterised in that: institute
Stating heavy flame retardant coating (1) and lightweight thermal insulation layer (2) is combined together with up-down structure.
8. a kind of production technology of the composite refractory brick containing expanded and vitrified small ball as claimed in claim 6, it is characterised in that: institute
Stating heavy flame retardant coating (1) and lightweight thermal insulation layer (2) is combined together with tiled configuration.
9. a kind of production technology of the composite refractory brick containing expanded and vitrified small ball as claimed in claim 6, it is characterised in that: institute
Stating heavy flame retardant coating (1) and lightweight thermal insulation layer (2), once compacting is integral, and pressing pressure is 3.2~3.6t, and compacting number is 4
~6 times.
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| CN107120972A (en) * | 2017-06-28 | 2017-09-01 | 长兴鑫迪耐火材料厂 | A kind of electrical kiln refractory brick of light thermal-insulation |
| CN107144136B (en) * | 2017-06-28 | 2023-07-28 | 林口宇华耐火新材料有限公司 | Refractory brick connection structure |
| CN113200742A (en) * | 2021-05-07 | 2021-08-03 | 湖北第二师范学院 | Heat-insulating composite wear-resistant brick |
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| CN2073876U (en) * | 1990-07-21 | 1991-03-27 | 崔仁义 | Heavy lepton long-range infrared refractory brick |
| CN101875556A (en) * | 2009-10-16 | 2010-11-03 | 北京工业大学 | Light ceramic tiles and manufacturing process thereof |
| CN103204691A (en) * | 2013-05-07 | 2013-07-17 | 郑州中本窑炉材料有限公司 | Low-heat conductance silicon corundum brick material and silicon corundum composite brick made of same |
| CN103234346A (en) * | 2013-05-10 | 2013-08-07 | 郑州瑞泰耐火科技有限公司 | Low-heat-conduction multi-layer mullite brick and preparation method thereof |
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2016
- 2016-01-08 CN CN201610011283.9A patent/CN105669221B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2073876U (en) * | 1990-07-21 | 1991-03-27 | 崔仁义 | Heavy lepton long-range infrared refractory brick |
| CN101875556A (en) * | 2009-10-16 | 2010-11-03 | 北京工业大学 | Light ceramic tiles and manufacturing process thereof |
| CN103204691A (en) * | 2013-05-07 | 2013-07-17 | 郑州中本窑炉材料有限公司 | Low-heat conductance silicon corundum brick material and silicon corundum composite brick made of same |
| CN103234346A (en) * | 2013-05-10 | 2013-08-07 | 郑州瑞泰耐火科技有限公司 | Low-heat-conduction multi-layer mullite brick and preparation method thereof |
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Address after: 313112 Changxing County Huzhou town industrial concentration area, Huzhou, Zhejiang Applicant after: Zhejiang Changxin Jiuxin refractory material Polytron Technologies Inc Address before: 313112 Changxing County Huzhou town industrial concentration area, Huzhou, Zhejiang Applicant before: ZHEJIANG CHANGXING JX REFRACTORY MATERIAL CO., LTD. |
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Denomination of invention: A composite refractory brick containing expanded vitrified beads Effective date of registration: 20210715 Granted publication date: 20181211 Pledgee: Changxin Zhejiang rural commercial bank Limited by Share Ltd. Pledgor: ZHEJIANG CHANGXING JX & REFRACTORY TECHNOLOGY Co.,Ltd. Registration number: Y2021330000925 |