CN105503223B - A kind of heavy and light composite refractory brick containing expanded and vitrified small ball - Google Patents
A kind of heavy and light composite refractory brick containing expanded and vitrified small ball Download PDFInfo
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Abstract
The present invention relates to a kind of heavy and light composite refractory brick containing expanded and vitrified small ball, including heavy flame retardant coating and lightweight thermal insulation layer, the heavy flame retardant coating include：Fused white corundum 30wt%~60wt%, electrofused mullite 15wt%~35wt%, andalusite 10wt%~25wt%, 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 13wt%~35wt%, electrofused mullite 9wt%~25wt%, andalusite 4wt%~15wt%, 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 25wt%~35wt%.The invention further relates to a kind of production technologies of the heavy and light 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 heavy and light 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 heavy and light 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 heavy and light composite refractory brick containing expanded and vitrified small ball.
A kind of heavy and light composite refractory brick containing expanded and vitrified small ball, including heavy flame retardant coating and lightweight thermal insulation layer.It is described heavy
The material of matter flame retardant coating and the main material of lightweight thermal insulation layer are completely the same, and the heavy flame retardant coating includes：Fused white corundum
30wt%~60wt%, electrofused mullite 15wt%~35wt%, andalusite 10wt%~25wt%, 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 mainly includes：Fused white corundum 13wt%~35wt%, electrofused mullite 9wt%~
25wt%, andalusite 4wt%~15wt%, 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 include 25wt%~
The expanded and vitrified small ball of 35wt%；The faying face of the heavy flame retardant coating and lightweight thermal insulation layer is plane faying face, zigzag knot
Any one in conjunction face or concave-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 heavy and light composite refractory brick containing expanded and vitrified small ball, due to its heavy flame retardant coating with
Common heavy refractory brick similar performance has common heavy refractory brick resistance to erosion, high temperature resistant, corrosion-resistant and heat shock resistance excellent
Point.
(2) the present invention provides a kind of heavy and light composite refractory brick containing expanded and vitrified small ball, due in its lightweight thermal insulation layer
It joined expanded and vitrified small ball, and expanded and vitrified small ball is light and internal porous, so that lightweight thermal insulation layer thermal conductivity substantially reduces,
Have the advantages of common insulating layer heat preservation, while using expanded and vitrified small ball as pore creating material compared with common burning loses pore creating material, by
A kind of environmental protection inorganic light heat-insulating material in expanded and vitrified small ball, can solve it is common burn lose pore creating material burn lose during because
The not exclusively pollution problem of combustion baked generation.
(3) the present invention provides a kind of heavy and light composite refractory brick containing expanded and vitrified small ball, due to its heavy flame retardant coating and
Lightweight thermal insulation layer basis material is consistent, keeps its Thermal Contraction Coefficient close, so that under hot operation state, between two layer components
Stress become very little, faying face is firmly combined the problem of being less prone to faying face fracture.
(4) the present invention provides a kind of heavy and light composite refractory brick containing expanded and vitrified small ball, due to its be provided simultaneously with it is heat-insulated
Time and the expense of construction are reduced, is also saved so that only needing one layer of masonry when using and constructing with the effect of heat preservation
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 heavy and light composite refractory brick containing expanded and vitrified small ball.
A kind of production technology of the heavy and light composite refractory brick containing expanded and vitrified small ball, including：Raw material processing-ingredient-is mixed
White silk-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, clay,
Alumina powder, calcium lignosulfonate, yellow starch gum, silicon powder；The lightweight thermal insulation layer includes：Fused white corundum, electrofused mullite, andalusite, pottery
Soil, 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 45
~55 DEG C, drying time is 18~22h；Second stage is force drying, and drying temperature is 90~110 DEG C, drying time 14
~16h, the control of raw brick moisture content mass content is below 6% after drying；
E. in firing process, the heavy and light composite refractory brick for completing drying process is packed into high temperature kiln, is heated to from room temperature
1500 DEG C, 7h is kept the temperature, completes firing process.
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) production technology of the present invention provides a kind of heavy and light composite refractory brick containing expanded and vitrified small ball, since its is heavy
Matter flame retardant coating and common heavy refractory brick similar performance have common heavy refractory brick resistance to erosion, high temperature resistant, corrosion-resistant and heat-resisting
The advantages of impact.Simultaneously as joined expanded and vitrified small ball in its lightweight thermal insulation layer, and expanded and vitrified small ball is light and internal
It is porous, so that lightweight thermal insulation layer thermal conductivity substantially reduces, have the advantages of common insulating layer heat preservation, while with expanded and vitrified small ball
As pore creating material compared with common burning loses pore creating material, since expanded and vitrified small ball is a kind of environmental protection inorganic light heat-insulating material,
It can solve the common pollution problem burnt during mistake pore creating material burning is lost because of not exclusively combustion baked generation.In this way, utilizing described one kind
The heavy and light containing expanded and vitrified small ball that the production technology of heavy and light composite refractory brick containing expanded and vitrified small ball is manufactured is compound resistance to
Firebrick is provided simultaneously with heat-insulated and heat preservation effect and reduces construction so that only needing one layer of masonry when using and constructing
Time and expense, also save material and resource, reduce discharge, at the same can also further decrease Industrial Stoves accumulation of heat and
Radiation loss.
(2) production technology of the present invention provides a kind of heavy and light composite refractory brick containing expanded and vitrified small ball, since its is heavy
Matter flame retardant coating is consistent with lightweight thermal insulation layer basis material, keeps its Thermal Contraction Coefficient close, so that under working condition, two layers group
/ stress become very little, faying face is firmly combined the problem of being less prone to faying face fracture.
(3) production technology of the present invention provides a kind of heavy and light composite refractory brick containing expanded and vitrified small ball, due to this hair
Bright middle drying process is dried using two stages, first demoulds drying, this stage raw brick moisture content is big, need to control drying temperature,
It prevents moisture to be sharply discharged and causes adobe cracked；Then force drying, control green body moisture reaches requirement, to guarantee to burn
The quality of product after knot.Demoulding the dry time simultaneously is 18~22h, is divided for a period of time so that faying face can use this
Infiltration between son and diffusion are 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 heavy and light composite fire brick structure A schematic diagram containing expanded and vitrified small ball.
Fig. 2 is the heavy and light composite fire brick structure B schematic diagram containing expanded and vitrified small ball.
Fig. 3 is the heavy and light composite refractory brick zigzag faying face schematic shapes containing expanded and vitrified small ball.
Fig. 4 is the heavy and light composite refractory brick concave-convex faying face schematic shapes containing expanded and vitrified small ball.
Fig. 5 is the heavy and light 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 heavy and light composite fire brick structure A schematic diagram containing expanded and vitrified small ball.As shown in Figure 1, being mentioned in the present embodiment
What is supplied is a kind of heavy and light composite refractory brick containing expanded and vitrified small ball, including heavy flame retardant coating 1 and lightweight thermal insulation layer 2；It is described heavy
Matter flame retardant coating 1 includes：Fused white corundum 60wt%, electrofused mullite 15wt%, andalusite 10wt%, clay 6wt%, aluminium oxide
Powder 4wt%, calcium lignosulfonate 3wt%, yellow starch gum 1wt%, silicon powder 1wt%；The lightweight thermal insulation layer 2 includes：Fused white corundum 35wt%,
Electrofused mullite 9wt%, andalusite 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 25wt%；The heavy flame retardant coating 1 and lightweight thermal insulation layer
2 faying face 3 is plane faying face.
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 thickness proportion of fire bed 1 and lightweight thermal insulation layer 2 is 2:3.
Embodiment two
Fig. 2 is that heavy and light composite fire brick structure B schematic diagram, Fig. 3 containing expanded and vitrified small ball are containing expanded and vitrified small ball
Heavy and light composite refractory brick zigzag faying face schematic shapes, Fig. 5 are the heavy and light composite refractory brick section view containing expanded and vitrified small ball
Figure.A kind of heavy and light composite refractory brick containing expanded and vitrified small ball is provided as shown in Fig. 2, Fig. 3 and Fig. 5, in the present embodiment, is wrapped
Include heavy flame retardant coating 1 and lightweight thermal insulation layer 2；The heavy flame retardant coating 1 includes：Fused white corundum 30wt%, electrofused mullite
35wt%, andalusite 12wt%, clay 8wt%, alumina powder 6wt%, calcium lignosulfonate 4wt%, yellow starch gum 2wt%, silicon powder 3wt%；
The lightweight thermal insulation layer 2 includes：Fused white corundum 13wt%, electrofused mullite 25wt%, andalusite 4wt%, clay 9wt%,
Alumina powder 5wt%, calcium lignosulfonate 6wt%, yellow starch gum 2wt%, silicon powder 1wt%；The lightweight thermal insulation layer 2 is also swollen comprising 35wt%
Swollen glass bead；The faying face 3 of the heavy flame retardant coating 1 and lightweight thermal insulation layer 2 is zigzag faying face.
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 2:3.
Embodiment three
Fig. 1 is that heavy and light composite fire brick structure A schematic diagram, Fig. 4 containing expanded and vitrified small ball are containing expanded and vitrified small ball
Heavy and light composite refractory brick concave-convex faying face schematic shapes.One kind is provided as shown in Fig. 1 and Fig. 4, in the present embodiment to contain
The heavy and light composite refractory brick of expanded and vitrified small ball, including heavy flame retardant coating 1 and lightweight thermal insulation layer 2；The heavy flame retardant coating 1 wraps
It includes：Fused white corundum 35wt%, electrofused mullite 16wt%, andalusite 11wt%, 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 15wt%, electric smelting do not come
Stone 10wt%, andalusite 8wt%, clay 15wt%, alumina powder 10wt%, calcium lignosulfonate 5wt%, yellow starch gum 3wt%, silicon powder
4wt%；The lightweight thermal insulation layer 2 also includes the expanded and vitrified small ball of 30wt%；The heavy flame retardant coating 1 and lightweight thermal insulation layer 2
Faying face 3 be concave-convex faying face.
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 2:3.
Example IV
Fig. 2 is that heavy and light composite fire brick structure B schematic diagram, Fig. 4 containing expanded and vitrified small ball are containing expanded and vitrified small ball
Heavy and light composite refractory brick concave-convex faying face schematic shapes.As shown in Figures 2 and 4, one kind is provided in the present embodiment to contain
The heavy and light composite refractory brick of expanded and vitrified small ball, including heavy flame retardant coating 1 and lightweight thermal insulation layer 2；The heavy flame retardant coating 1 wraps
It includes：Fused white corundum 40wt%, electrofused mullite 18wt%, andalusite 25wt%, clay 7wt%, alumina powder 5wt%, wood
Calcium 3wt%, yellow starch gum 1wt%, silicon powder 1wt%；The lightweight thermal insulation layer 2 includes：Fused white corundum 25wt%, electrofused mullite
20wt%, andalusite 5wt%, clay 12wt%, alumina powder 8wt%, calcium lignosulfonate 3wt%, yellow starch gum 1wt%, silicon powder 1wt%；
The lightweight thermal insulation layer 2 also includes the expanded and vitrified small ball of 25wt%；The combination of the heavy flame retardant coating 1 and lightweight thermal insulation layer 2
Face is concave-convex faying face.
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 2:3.
Examples 1 to 4 and the comparison of common composite refractory brick break resistance index are as shown in table 1：
By table 1 this it appears that the Resisting fractre ability of the heavy and light composite refractory brick containing expanded and vitrified small ball in embodiment
Also it is much higher than common composite refractory brick much higher than its breaking strength under common composite refractory brick, especially high temperature operating conditions, makes
It has excellent Resisting fractre ability at work, and the fracture at faying face can be effectively prevented.
Table 1
Note:The refractory brick specification for comparing five seed types used is identical, is tested under identical condition.
Embodiment five
A kind of production technology of the heavy and light composite refractory brick containing expanded and vitrified small ball, including：Raw material processing-ingredient-is mixed
White silk-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, clay,
Alumina powder, calcium lignosulfonate, yellow starch gum, silicon powder；The lightweight thermal insulation layer includes：Fused white corundum, electrofused mullite, andalusite, pottery
Soil, 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 implemented
Shown in example 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 45
DEG C, drying time 22h；Second stage is force drying, and drying temperature is 90 DEG C, drying time 16h, adobe water after drying
Divide mass content control below 6%.
In firing process, the heavy and light composite refractory brick for completing drying process is packed into high temperature kiln, is heated to from room temperature
1500 DEG C, 7h is kept the temperature, completes firing process.
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 heavy and light composite refractory brick containing expanded and vitrified small ball, including：Raw material processing-ingredient-is mixed
White silk-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, clay,
Alumina powder, calcium lignosulfonate, yellow starch gum, silicon powder；The lightweight thermal insulation layer includes：Fused white corundum, electrofused mullite, andalusite, pottery
Soil, 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 implemented
Shown in example 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 55
DEG C, drying time 18h；Second stage is force drying, and drying temperature is 110 DEG C, drying time 14h, adobe after drying
Biodiversity content controls below 6%.
In firing process, the heavy and light composite refractory brick for completing drying process is packed into high temperature kiln, is heated to from room temperature
1500 DEG C, 7h is kept the temperature, completes firing process.
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 heavy and light composite refractory brick containing expanded and vitrified small ball, including：Raw material processing-ingredient-is mixed
White silk-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, clay,
Alumina powder, calcium lignosulfonate, yellow starch gum, silicon powder；The lightweight thermal insulation layer includes：Fused white corundum, electrofused mullite, andalusite, pottery
Soil, 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 implemented
Shown in example 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 50
DEG C, drying time 20h；Second stage is force drying, and drying temperature is 100 DEG C, drying time 15h, adobe after drying
Biodiversity content controls below 6%.
In firing process, the heavy and light composite refractory brick for completing drying process is packed into high temperature kiln, is heated to from room temperature
1500 DEG C, 7h is kept the temperature, completes firing process.
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 heavy and light composite refractory brick containing expanded and vitrified small ball that embodiment 5~7 manufactures manufactures compound resistance to common process
The comparison of firebrick 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 heavy and light composite refractory brick Resisting fractre ability containing expanded and vitrified small ball in embodiment is remote
Higher than the composite refractory brick of common process manufacture, breaking strength is also much higher than common process manufacture especially under high temperature operating conditions
Composite refractory brick, 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 (8)
1. a kind of heavy and light composite refractory brick containing expanded and vitrified small ball, including heavy flame retardant coating (1) and lightweight thermal insulation layer (2),
It is characterized in that：The heavy flame retardant coating (1) consists of the following compositions：Fused white corundum 30wt%~60wt%, electrofused mullite
15wt%~35wt%, andalusite 10wt%~25wt%, 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 (2) is by following
At being grouped as：Fused white corundum 13wt%~35wt%, electrofused mullite 9wt%~25wt%, andalusite 4wt%~
15wt%, clay 6wt%~15wt%, alumina powder 4wt%~10wt%, calcium lignosulfonate 3wt%~6wt%, yellow starch gum 1wt%~
3wt%, silicon powder 1wt%~4wt% and expanded and vitrified small ball 25wt%~35wt%；The heavy flame retardant coating (1) and lightweight are protected
The faying face (3) of warm layer (2) is any one in plane faying face or concave-convex faying face.
2. a kind of heavy and light composite refractory brick containing expanded and vitrified small ball as described in claim 1, it is characterised in that：The silicon powder
For metallurgical level-one, silicone content >=98.5%；Granularity≤0.8 μm of the silicon powder.
3. a kind of heavy and light composite refractory brick containing expanded and vitrified small ball as described in claim 1, it is characterised in that：The oxidation
The granularity of aluminium powder is 10~20 μm.
4. a kind of heavy and light composite refractory brick containing expanded and vitrified small ball as described in claim 1, it is characterised in that：The heavy
Flame retardant coating (1) and lightweight thermal insulation layer (2) are combined together with up-down structure.
5. a kind of heavy and light composite refractory brick containing expanded and vitrified small ball as described in claim 1, it is characterised in that：The heavy
Flame retardant coating (1) and lightweight thermal insulation layer (2) are combined together with tiled configuration.
6. a kind of heavy and light composite refractory brick containing expanded and vitrified small ball as described in Claims 1 to 5 any one claim
Production technology, including：Raw material processing-ingredient-kneading-molding-drying-firing-inspection-warehousing finished products, feature
It is：
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, clay, oxidation
Aluminium powder, calcium lignosulfonate, yellow starch gum, silicon powder；The lightweight thermal insulation layer includes：Fused white corundum, electrofused mullite, andalusite, clay, oxygen
Change aluminium 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 45~55
DEG C, drying time is 18~22h；Second stage is force drying, and drying temperature is 90~110 DEG C, drying time is 14~
16h, the control of raw brick moisture content mass content is below 6% after drying；
E. in firing process, the heavy and light composite refractory brick for completing drying process is packed into high temperature kiln, is heated to 1500 from room temperature
DEG C, 7h is kept the temperature, firing process is completed.
7. a kind of production technology of the heavy and light composite refractory brick containing expanded and vitrified small ball as claimed in claim 6, feature exist
In：The heavy flame retardant coating (1) and lightweight thermal insulation layer (2) are combined together with up-down structure.
8. a kind of production technology of the heavy and light composite refractory brick containing expanded and vitrified small ball as claimed in claim 6, feature exist
In：The heavy flame retardant coating (1) and lightweight thermal insulation layer (2) are combined together with tiled configuration.
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| CN101875556B (en) * | 2009-10-16 | 2012-07-04 | 北京工业大学 | Light ceramic tiles and manufacturing process thereof |
| CN103204691B (en) * | 2013-05-07 | 2014-07-02 | 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 |
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Address after: 313100 forest industrial town concentrated area in Changxing County, 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 heavy and light composite refractory brick containing expanded vitrified beads Effective date of registration: 20210715 Granted publication date: 20181127 Pledgee: Changxin Zhejiang rural commercial bank Limited by Share Ltd. Pledgor: ZHEJIANG CHANGXING JX & REFRACTORY TECHNOLOGY Co.,Ltd. Registration number: Y2021330000925 |