CN109776076A - High-strength corundum refractory clay - Google Patents
High-strength corundum refractory clay Download PDFInfo
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- CN109776076A CN109776076A CN201711125122.3A CN201711125122A CN109776076A CN 109776076 A CN109776076 A CN 109776076A CN 201711125122 A CN201711125122 A CN 201711125122A CN 109776076 A CN109776076 A CN 109776076A
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Abstract
A kind of high-strength corundum refractory clay, is made of the raw material of following weight percents: the Al of 70-80%2O3Powder, the SiO of 15-30%2Powder, the graphite of 0.05-0.09%, the phenol-formaldehyde resin powder of 0.03-0.05%；The aluminate cement of 2-5%.Aluminate cement plays the effect of coagulant, so that material has preferable intensity, graphite improves the three-dimensional intensity for generating material simultaneously, network cross structure is even closer, make the adhesion strength of refractory wass be able to maintain higher temperature using phenol-formaldehyde resin powder, improves the medium and high temperature adhesion strength of mud.
Description
Technical field
The present invention relates to technical field of refractory materials, specially a kind of ladle, coke oven, glass furnace etc. of being suitable for needs fire resisting
Field uses, and has intensity high, prevents the characteristic of high temperature fracture.
Background technique
Refractory wass (refractory mortar) is used as the unshape refractory of refractory masonry seam, also known as connects
Sewing.Refractory wass can be divided into the hydraulicity, thermohardening, air hardening refractory mud according to its bonding agent condensation hardening feature；The hydraulicity
Refractory wass is can be used under room temperature or may be with water or steam often in contact with place using cement as bonding agent.Thermohardening is resistance to
Chamotte is starched the common thermohardenings bonding agent such as phosphoric acid or phosphate and is made.It is higher except having at various temperatures after such mud hardening
Other than intensity, contraction is small, and seam is tight, and erosion resisting is strong；Air hardening refractory mud is often matched with the air-settings bonding agent such as sodium metasilicate
System, this mud can make the seam of masonry tight.Different according to the material of refractory powder used, common refractory wass can divide
Are as follows: clayey, High-Alumina, it is siliceous, magnesia, contain carbonaceous, heat-insulated matter, etc..Clay fire-resistant slurry uses hard paste clinker
As base-material, combined with mild-clay or chemical bond.Be mainly used in blast furnace, hot-blast stove, coke oven, soaking pit, heat exchanger,
The furnace body seam and repairing of the clay brick masonry such as boiler.High alumina fire-resistant slurry material of main part selects high alumina, bonding agent
With mild-clay or chemical bond.Al is determined according to the brick body ingredient and requirement at built position2O3Content.It can be extensive
Various Industrial Stoves for high alumina brick masonry.For building furnace roof, regenerative chamber, combustion chamber etc. on hot-blast stove, it to be used for blast furnace
The parts such as furnace bottom, cupola well, bosh, furnace bosh, it may also be used for repair the positions such as industrial kiln top, furnace wall.Silica fire resistant mud is adopted
Main material is done with Cab-O-sil or addition part silicon powder.Bonding agent can use mild-clay or chemical bond.Silica fire resistant mud master
It is used to build and repair coke oven, glass melter, acid smelting furnace etc. and other Industrial Stoves built with silica brick.Magnesia fireproof
Mud uses various magnesia as raw material, with the combination of clay, bentonite or chemical bond, or with brine (MgCl2) directly modulate
Mud.Open hearth, electric furnace, oxygen coverter, smelting non-ferrous metal kiln etc. is mainly used in be built with magnesia brick, magnesite-chrome brick, magnesia-alumina brick etc.
The part built.Carbon containing refractory wass is made by various light-weight refractory powders and bonding agent.Its main feature is that bulk density is small, thermal conductivity
It is low, it can be used for building and repairing on the various Industrial Stoves built with heat-barrier material.Other refractory wass remove above several fire resistings
Outside mud, there are also silicon carbide based fire clay slurries, porzite flame-proof mud, corundum fireproof mud, zirconium fire-resistant slurry, chromium matter
Refractory wass.Its different properties is respectively used to the masonry and repairing of same material refractory brick.The additionally mud of some specific uses
Slurry, such as anhydrous (non-aqueous) mud, expansion mud.The sufficient clinker of sintering and other can be selected in the powder for making refractory wass
The various refractory raw materials of volume stability.For the granularity of powder-material depending on requirement, Limit Grain Size is generally less than 1mm, has
It is less than 0.5mm or thinner.Reasonable particle group guarantees that the workability of mud has a significant impact in pairs, bonding agent and additive
It is the same.The bonding agent that common refractory wass uses is bonding clay.With the requirements at the higher level of user, chemical bond is obtained
More and more extensive use.Various additives are added in refractory wass can improve the workability of refractory wass, be such as added and protect
Water-proofing agent guarantees construction quality to extend losing time；Plasticizer is added, mud can be increased in the lesser situation of additional amount
Plasticity；Dispersing agent is added to improve the mobility etc. of mud.Refractory wass be refractory brick or brick are connected into one it is solid
It is whole, it is essential a kind of unshape refractory during most stoves are built.It will not only bear high temperature action, together
When it to undertake adjustment brick outer dimension tolerance, balance brick between swelling stress.Therefore only using high-grade fire clay
Slurry, can just obtain the kiln of high-efficiency long-life.
Siliceous mud powder is the binding material of refractory brick, and builds the binding material of the high-temperature furnace bodies such as coke oven, it
Performance directly affects the masonry quality and service life of refractory brick and furnace body.Currently, people use always native mud, it is such as certain
Then manufacturer mixes with the residual silica brick of a small amount of each production silica brick producer using tripoli as primary raw material and natural mud is made
Starch since the primary raw material of native mud is tripoli, and builds silica brick used in the furnace bodies such as coke oven in material in actual use
It is had differences in matter, although also containing a small amount of residual silica brick in ingredient, due to the otherness in area, so that preparing mud powder
There is also differences in material for silica brick used in the furnace bodies such as residual silica brick and masonry coke oven, therefore occur in the construction process
Native mud and silica brick bond and inadherent phenomenon under high temperature environment at low ambient temperatures, from now on to high temperature furnaces such as coke ovens
Production bring great hidden danger.
Summary of the invention
The present invention is low and mutually inadherent in practical applied at elevated temperature process interrupt resistance to spalling in order to solve existing refractory clay
Problem provides a kind of high-strength corundum refractory clay.
The present invention is achieved by the following technical scheme: original of the high-strength corundum refractory clay by following weight percents
Material is made: the Al of 70-80%2O3Powder, the SiO of 15-30%2Powder, the graphite of 0.05-0.09%, the phenolic aldehyde of 0.03-0.05%
Resin-oatmeal；The aluminate cement of 2-5%.
Aluminate cement plays the effect of coagulant, Al after temperature reaches 600 degree2O3Powder and SiO2 powder are anti-
Mullite phase should be generated, so that material has preferable intensity, as the temperature rises, mullite crystal is grown up, network
Cross structure is even closer, while graphite improves the three-dimensional intensity for generating material.
The heat cured phenol-formaldehyde resin powder of heat-resistant fireproof makes the adhesion strength of refractory wass be able to maintain higher temperature,
Improve the medium and high temperature adhesion strength of mud.
Graphite enhances the cubic network in material centered on C, improves the intensity of material.
The invention has the advantages that aluminate cement plays the effect of coagulant, so that material has preferably by force
Degree, while graphite improves the three-dimensional intensity for generating material, network cross structure is even closer, is made using phenol-formaldehyde resin powder resistance to
The adhesion strength of chamotte slurry is able to maintain higher temperature, improves the medium and high temperature adhesion strength of mud.
Specific embodiment
Embodiment 1:
High-strength corundum refractory clay is made of the raw material of following weight percents: 70% Al2O3Powder, 25% SiO2Powder
End, 0.05% graphite, 0.05% phenol-formaldehyde resin powder；4.9% aluminate cement.
Embodiment 2:
High-strength corundum refractory clay is made of the raw material of following weight percents: 80% Al2O3Powder, 18% SiO2Powder
End, 0.09% graphite, 0.03% phenol-formaldehyde resin powder；1.88% aluminate cement.
Claims (1)
1. a kind of high-strength corundum refractory clay, it is characterized in that: it is made of the raw material of following weight percents: 70-80%'s
Al2O3Powder, the SiO of 15-30%2Powder, the graphite of 0.05-0.09%, the phenol-formaldehyde resin powder of 0.03-0.05%；The aluminium of 2-5%
Acid salt cement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711125122.3A CN109776076A (en) | 2017-11-15 | 2017-11-15 | High-strength corundum refractory clay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711125122.3A CN109776076A (en) | 2017-11-15 | 2017-11-15 | High-strength corundum refractory clay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109776076A true CN109776076A (en) | 2019-05-21 |
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ID=66494139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711125122.3A Pending CN109776076A (en) | 2017-11-15 | 2017-11-15 | High-strength corundum refractory clay |
Country Status (1)
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| CN (1) | CN109776076A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112974790A (en) * | 2021-02-03 | 2021-06-18 | 鞍山市和丰耐火材料有限公司 | Production process for preventing iron shell of tundish nozzle from falling off |
-
2017
- 2017-11-15 CN CN201711125122.3A patent/CN109776076A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112974790A (en) * | 2021-02-03 | 2021-06-18 | 鞍山市和丰耐火材料有限公司 | Production process for preventing iron shell of tundish nozzle from falling off |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190521 |