CN107954726A - Corrosion-resistant mullite firebrick and preparation method thereof - Google Patents
Corrosion-resistant mullite firebrick and preparation method thereof Download PDFInfo
- Publication number
- CN107954726A CN107954726A CN201610897145.5A CN201610897145A CN107954726A CN 107954726 A CN107954726 A CN 107954726A CN 201610897145 A CN201610897145 A CN 201610897145A CN 107954726 A CN107954726 A CN 107954726A
- Authority
- CN
- China
- Prior art keywords
- corrosion
- resistant
- mullite
- adobe
- refractory brick
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B35/16—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 based on silicates other than clay
- C04B35/18—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 based on silicates other than clay rich in aluminium oxide
- C04B35/185—Mullite 3Al2O3-2SiO2
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/10—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by using foaming agents or by using mechanical means, e.g. adding preformed foam
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5053—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials non-oxide ceramics
- C04B41/5062—Borides, Nitrides or Silicides
- C04B41/5071—Silicides
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
- C04B41/85—Coating or impregnation with inorganic materials
- C04B41/87—Ceramics
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3208—Calcium oxide or oxide-forming salts thereof, e.g. lime
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3232—Titanium oxides or titanates, e.g. rutile or anatase
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B2235/34—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
- C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B2235/34—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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B2235/36—Glass starting materials for making ceramics, e.g. silica glass
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/74—Physical characteristics
- C04B2235/77—Density
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
Abstract
The present invention provides a kind of corrosion-resistant mullite firebrick, it includes refractory brick matrix and is sprayed on the high-temperaure coating of the refractory brick matrix surface;Wherein, the preparing raw material of the refractory brick matrix includes:Mullite bulky grain 27%~31%, hollow glass micropearl 15%~25%, Metakaolin superfine powder 3%~5%, titanium dioxide 10%~18%, polyvinyl alcohol water solution 0.5%~1.5%, flyash 5%~10%, diatomite 5%~10%, calcium carbonate 6%~11%, surplus are pulp-water;The preparing raw material of the high-temperaure coating includes:Polysiloxanes 20%~35%, PVDF hollow fiber membrane 30%~38%, Mo powder 3%~10%, surplus are ethanol.The present invention also provides a kind of preparation method of corrosion-resistant mullite firebrick, this method step letter nitrogen, be easy to automated production.
Description
Technical field
The invention belongs to technical field of refractory materials, specifically, relate to a kind of corrosion-resistant mullite firebrick and its
Preparation method.
Background technology
Refractory material is due to the corrosion resistance good to high-temperature medium, and the performance with insulation, it is metallurgical,
The high temperature industry such as petrochemical industry, glass is widely used.As energy-saving attention degree is continuously improved in China, there is good protect
The lightweight refracrory of warm heat insulation has obtained more research and developments.Unshape refractory due to construction just
Profit, production cost are low, and the advantage such as overall structure is good of liner body, and receive special attention, wherein being poured especially with fire resisting
Material feeding is applied the most extensive.
Usually used castable refractory is mainly Al2O3-SiO2Material, but this kind of refractory material is in industries such as petrochemical industry
In use, due to the influence of residing reducing atmosphere environment, the damage of refractory material can be caused to aggravate, so that the use of material
Service life reduction.Further, since pore size is larger in traditional refractory aggregate, aperture is in grade more, so when the material
In hot environment in use, since by the aggravation that gas radiation heat transfer is conducted heat with convection current in stomata, refractory material can be made
Thermal conductivity factor raises, and thereby reduces the heat insulation and preservation effect of refractory material, increases the loss of thermal energy, cause energy cost
Rising.
In order to solve the problems, such as present on, people are seeking a kind of preferable technical solution always.
The content of the invention
The purpose of the present invention is in view of the deficiencies of the prior art, so that providing a kind of has higher thermal shock resistance and preferably
Heat insulation and preservation effect corrosion-resistant mullite firebrick.
To achieve these goals, the technical solution adopted in the present invention is:A kind of corrosion-resistant mullite firebrick, including
Refractory brick matrix and the high-temperaure coating for being sprayed on the refractory brick matrix surface;Wherein, the preparation of the refractory brick matrix is former
Material includes:Mullite bulky grain 27%~31%, hollow glass micropearl 15%~25%, Metakaolin superfine powder 3%~5%, titanium dioxide
10%~18%, polyvinyl alcohol water solution 0.5%~1.5%, flyash 5%~10%, diatomite 5%~10%, calcium carbonate 6%~11%,
The preparing raw material that surplus obtains the high-temperaure coating for pulp-water includes:Polysiloxanes 20%~35%, PVDF hollow fiber membrane 30%~
38%th, Mo powder 3%~10%, surplus are ethanol.
Based on above-mentioned, the mullite bulky grain particle diameter is the mm of 1 mm~3, the hollow glass micropearl particle diameter is 0.5
The mm of mm~1.
Based on above-mentioned.The Metakaolin superfine powder granularity is less than 0.043mm, the diatom soil granularity is less than 0.074mm.
The present invention also provides a kind of preparation method of corrosion-resistant mullite firebrick, comprise the following steps:
According to above-mentioned mass percent raw material calculate, by mullite bulky grain, hollow glass micropearl, Metakaolin superfine powder,
Titanium dioxide, polyvinyl alcohol water solution, flyash, diatomite, calcium carbonate and pulp-water carry out mixed grind and prefabricated pug are made, by described in
Mixed grind pug is pressed into adobe and drying;
High-temperature resistant coating is made in polysiloxanes, PVDF hollow fiber membrane, Mo powder and ethanol, then by the dried adobe surface
The high-temperature resistant coating is sprayed, spraying adobe is made, the corrosion-resistant mullite is made after drying, calcining in the spraying adobe
Refractory brick.
Based on above-mentioned, the mixed grind pug is pressed into adobe, and by the adobe spontaneously dry 24 it is small when be placed on
In dry kiln, under 100 DEG C~200 DEG C of temperature conditionss it is dry 24 it is small when~48 it is small when;Then by the dried adobe
It is immersed in the high-temperature resistant coating and spraying adobe is made, and it is small that calcining 8 is carried out at a temperature of 1100 DEG C~1250 DEG C to it
When~10 it is small when so that be made the corrosion-resistant mullite firebrick.
The performance effect of each component is as follows in corrosion-resistant mullite firebrick raw material provided by the present invention:
Mullite bulky grain:It is a series of mineral general designation of aluminosilicate compositions, it is small with high temperature resistant, intensity high thermal conductivity coefficient,
The features such as energy-saving effect is notable, suitable for petroleum cracking stove, metallurgical hot-blast stove, ceramic roller kiln, tunnel oven, electroceramics shuttle kiln,
The liner of removing appts. of glass crucible and various electric furnaces, can directly contact flame.
Andalusite:Crystal belongs to orthogonal(Rectangle)The nesosilicate mineral of crystallographic system, andalusite is in adobe calcination process
It is middle irreversible crystal transformation occur to form the mullite with good mullite network, thus make it have 1800 DEG C with
On fire resistance, and resistance to suddenly cold and hot, mechanical strength are big, heat shock resistance power and resistance to slag are strong, loading inversion point is high, and have
High chemical stability and extremely strong resistance to chemical corrosion, so that the low creep andalusite composite refractory brick prepared
With high RUL, low creep, high thermal shock stability.
Metakaolin superfine powder:Metakaolin is the anhydrous aluminium silicate that kaolin is dehydrated formation at moderate temperatures.It is higher
It is irregular that atom, which puts in order, in the soil of ridge, and the steady state of thermodynamics Jie is presented, has gelling under appropriate excitation.Work as temperature
Start crystallization generation mullite and cristobalite when rising to 925 DEG C.Crystal is mainly made of oxygen-octahedron and hydrogen-oxygen octahedron, its
Middle oxygen-octahedron links the clathrum to form Hexagonal array in a manner of sharing apex angle along two-dimensional directional.Kaolin has strong
Acid resistance, good electrical insulating property and higher fire resistance, refractoriness is related with kaolinic chemical composition, pure height
The refractoriness of ridge soil is generally at 1700 DEG C or so, and when hydromica, feldspar content are more, when potassium, sodium, iron content are high, refractoriness reduces,
The refractoriness of metakaolin is minimum to be not less than 1500 DEG C.
Titanium dioxide:Main component is titanium dioxide, and chemical property is extremely stablized, and is a kind of amphoteric oxide of slant acidity,
It is widely used in all kinds of body structure surface coating, paper coating and fillers, plastics and elasticity.It is mainly as sintering aid herein,
Reduce the sintering temperature of refractory brick.
Diatomite:Diatomite is a kind of siliceous rock, is a kind of biogenic siliceous sedimentary rock, it is mainly by ancient times silicon
The remains of algae are formed.Its chemical composition is with SiO2Based on.Industrially it is often used as thermal insulation material.Due to porosity
Greatly, the features such as absorbability is strong, chemical property is stable, wear-resisting, heat-resisting, can provide excellent surface property, increase-volume, thickening for coating
And improve adhesive force.
Calcium carbonate:Calcium carbonate is a kind of inorganic compound, is commonly called as:Lime stone, lime stone, mountain flour.Mainly utilize carbon herein
Sour calcium and polyvinyl alcohol water solution are used as pore creating material and sintering aid.
Polysiloxanes, PVDF hollow fiber membrane and Mo powder under the high temperature conditions can cracking reaction generation Mo2C、Mo3The cenotypes such as Si, and
Amorphous Si OC ceramic coatings are formed, improve the surface resistance to corrosion of refractory brick, the volumetric expansion of generation can be reduced effectively
The porosity on refractory brick surface.
The present invention has prominent substantive distinguishing features and significant progress compared with the prior art, and specifically, the present invention is first
First by different grain size and mullite bulky grain, hollow glass micropearl, Metakaolin superfine powder, titanium dioxide, the polyvinyl alcohol of length
Aqueous solution, flyash, diatomite, calcium carbonate are mixed with pulp-water so that each site component proportioning of adobe of preparation is taken
With consistent, the uniformity of each position performance of corrosion-resistant mullite firebrick of calcining gained ensure that, while containing big in raw material
The granularity material that corner angle protrude is measured, increases critical granularity, providing firm skeleton structure for corrosion-resistant mullite firebrick makes
It is not likely to produce deformation in use.The present invention sprays the adobe by PVDF hollow fiber membrane, polysiloxanes, Mo powder and second
In the high-temperature resistant coating that alcohol is mixed with so that the adobe surface after firing forms one layer of refractory ceramics layer, improves product
High temperature resistant and surface erosion resistance energy.
Meanwhile the present invention makes full use of polyvinyl alcohol water solution to be mixed with above-mentioned raw materials so that material internal is in more times
Inside there are a large amount of Minute pores, and the Minute pores will not with the progress of sintering process agglomeration, finally in the product
Form micron order and equally distributed stomata so that the corrosion-resistant mullite firebrick of preparation has high RUL, low creep, highly resistance
Thermal shock performance.
Embodiment
Below by embodiment, technical scheme is described in further detail.
Embodiment 1
The present embodiment provides a kind of corrosion-resistant mullite firebrick, including refractory brick matrix and it is sprayed on the refractory brick matrix table
The high-temperaure coating in face;Wherein, the preparing raw material of the refractory brick matrix includes:Mullite bulky grain 31%, hollow glass micropearl
18%th, Metakaolin superfine powder 5%, titanium dioxide 13%, polyvinyl alcohol water solution 0.5%, flyash 10%, diatomite 5.5%, calcium carbonate
6%th, pulp-water 11%.The preparing raw material of the high-temperaure coating includes:Polysiloxanes 35%, Mo powder 10%, PVDF hollow fiber membrane 33%,
Ethanol 22%.
Wherein, the mullite bulky grain particle diameter be the mm of 1 mm~3, the hollow glass micropearl particle diameter be 0.5 mm~1
Mm, the Metakaolin superfine powder granularity are less than 0.043mm, the diatom soil granularity is less than 0.074mm.Chemistry in each raw material
Component is as shown in table 1.
Table 1, each raw material main chemical compositions
The present embodiment also provides a kind of preparation method of the corrosion-resistant mullite firebrick, and specific preparation process includes:
(1)Calculated according to the raw material of above-mentioned mass percent, mullite bulky grain, hollow glass micropearl, metakaolin is ultra-fine
Powder, titanium dioxide, polyvinyl alcohol water solution, flyash, diatomite, calcium carbonate and pulp-water carry out mixed grind and prefabricated pug are made;Will
High-temperature resistant coating is made with ethanol in polysiloxanes Mo powder;
(2)The mixed grind pug is pressed into by adobe using brickmaking machine of the pressure tonnage more than 315 tons, and by the adobe certainly
When so drying 24 is small, it is subsequently placed in dry kiln, when drying 24 is small under 200 DEG C of temperature conditionss;Then by dried brick
Base be immersed in the high-temperature resistant coating be made spraying adobe, and it is carried out at a temperature of 1250 DEG C calcining 8 it is small when so that
The corrosion-resistant mullite firebrick is made.After testing, the corrosion-resistant mullite firebrick density is made from the present embodiment
1.9g/cm3。
Embodiment 2
The present embodiment provides a kind of corrosion-resistant mullite firebrick, including refractory brick matrix and it is sprayed on the refractory brick matrix table
The high-temperaure coating in face;Wherein, the refractory brick matrix includes the material of following mass percents:Mullite bulky grain 29%, sky
Heart glass microballoon 15%, Metakaolin superfine powder 3%, titanium dioxide 18%, polyvinyl alcohol water solution 1.5%, flyash 8.5%, diatomite
8%th, calcium carbonate 6%, pulp-water 11%.The raw material of the high-temperaure coating includes:Polysiloxanes 22%, Mo powder 3%, PVDF hollow fiber membrane
30%th, ethanol 45%.
The preparation method of corrosion-resistant mullite firebrick described in the present embodiment is identical with the preparation method in embodiment 1.
After testing, the corrosion-resistant mullite firebrick density is 1.8g/cm made from the present embodiment3。
Embodiment 3
The present embodiment provides a kind of corrosion-resistant mullite firebrick, including refractory brick matrix and it is sprayed on the refractory brick matrix table
The high-temperaure coating in face;Wherein, the raw material of the refractory brick matrix includes:Mullite bulky grain 28.5%, hollow glass micropearl
15%th, Metakaolin superfine powder 5%, titanium dioxide 9%, polyvinyl alcohol water solution 1.5%, flyash 8%, diatomite 10%, calcium carbonate
11%th, pulp-water 12%;The raw material of the high-temperaure coating includes:Polysiloxanes 35%, Mo powder 10%, PVDF hollow fiber membrane 38%, ethanol
17%。
The preparation method of corrosion-resistant mullite firebrick described in the present embodiment and the preparation in embodiment 1
Method is identical.After testing, the corrosion-resistant mullite firebrick density is 2.1g/cm made from the present embodiment3。
Corrosion-resistant mullite firebrick performance detection
Bulk density, average pore size in the corrosion-resistant mullite firebrick prepared respectively to embodiment 1~3, refractoriness, room temperature
Compressive resistance and 1350 DEG C of high temperature break resistant intensity performances are detected, and testing result is as shown in table 2.
Table 2, corrosion-resistant mullite firebrick performance detection
As can be seen from the above table:The fire resisting softening point for the corrosion-resistant mullite firebrick that embodiment 1~3 provides is more than 1690
DEG C, cold crushing strength be more than 38MPa, average pore size between 8.5 microns~10.0 microns, bulk density is between 1.8 g/
cm3~2.2g/cm3Between, therefore the corrosion-resistant mullite firebrick property indices meet GB/T3994-2013 regulations
Index, there are equally distributed micron order stomata inside the corrosion-resistant mullite firebrick, while the product has load
The advantages of softening temperature is high, the performance of highly heatproof and shockproof.
Finally it should be noted that:The above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof;To the greatest extent
The present invention is described in detail with reference to preferred embodiments for pipe, those of ordinary skills in the art should understand that:Still
It can modify to the embodiment of the present invention or equivalent substitution is carried out to some technical characteristics;Without departing from this hair
The spirit of bright technical solution, it should all cover among the claimed technical solution scope of the present invention.
Claims (5)
1. a kind of corrosion-resistant mullite firebrick, it is characterised in that it includes refractory brick matrix and is sprayed on the refractory brick base
The high-temperaure coating in body surface face;Wherein, the preparing raw material of the refractory brick matrix includes:Mullite bulky grain 27%~31%, sky
Heart glass microballoon 15%~25%, Metakaolin superfine powder 3%~5%, titanium dioxide 10%~18%, polyvinyl alcohol water solution 0.5%~
1.5%th, flyash 5%~10%, diatomite 5%~10%, calcium carbonate 6%~11%, surplus are pulp-water;The high-temperaure coating
Preparing raw material includes:Polysiloxanes 20%~35%, PVDF hollow fiber membrane 30%~38%, Mo powder 3%~10%, surplus are ethanol.
2. corrosion-resistant mullite firebrick according to claim 1, it is characterised in that the mullite bulky grain particle diameter is
The mm of 1 mm~3, the hollow glass micropearl particle diameter are the mm of 0.5 mm~1.
3. corrosion-resistant mullite firebrick according to claim 1 or 2, it is characterised in that the Metakaolin superfine powder
Granularity is less than 0.043mm, the diatom soil granularity is less than 0.074mm.
4. a kind of preparation method of corrosion-resistant mullite firebrick, comprises the following steps:
Calculated according to the raw material of any one of claims 1 to 3 mass percent, mullite bulky grain, hollow glass is micro-
Pearl, Metakaolin superfine powder, titanium dioxide, polyvinyl alcohol water solution, flyash, diatomite, calcium carbonate and pulp-water carry out mixed grind
Prefabricated pug is made, the mixed grind pug is pressed into adobe and drying;
High-temperature resistant coating is made in polysiloxanes, PVDF hollow fiber membrane, Mo powder and ethanol, then by the dried adobe surface
The high-temperature resistant coating is sprayed, spraying adobe is made, the corrosion-resistant mullite is made after drying, calcining in the spraying adobe
Refractory brick.
5. the preparation method of corrosion-resistant mullite firebrick according to claim 4, it is characterised in that by the mixed grind mud
Material is pressed into adobe, and the adobe is placed in dry kiln when natural drying 24 is small, in 100 DEG C~200 DEG C of temperature
Under the conditions of it is dry 24 it is small when~48 it is small when;Then the dried adobe is immersed in the high-temperature resistant coating and spraying is made
Adobe, and it is carried out at a temperature of 1100 DEG C~1250 DEG C calcining 8 it is small when~10 it is small when so that be made it is described it is corrosion-resistant not
Carry out stone refractory brick.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610897145.5A CN107954726A (en) | 2016-10-14 | 2016-10-14 | Corrosion-resistant mullite firebrick and preparation method thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610897145.5A CN107954726A (en) | 2016-10-14 | 2016-10-14 | Corrosion-resistant mullite firebrick and preparation method thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
CN107954726A true CN107954726A (en) | 2018-04-24 |
Family
ID=61953809
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201610897145.5A Withdrawn CN107954726A (en) | 2016-10-14 | 2016-10-14 | Corrosion-resistant mullite firebrick and preparation method thereof |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN107954726A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110204322A (en) * | 2019-05-15 | 2019-09-06 | 唐山市凯伦保温材料有限公司 | A kind of mullite insulating fire brick and preparation method thereof |
CN115417682A (en) * | 2022-09-30 | 2022-12-02 | 安徽瑞泰新材料科技有限公司 | Refractory brick for industrial kiln and preparation method thereof |
-
2016
- 2016-10-14 CN CN201610897145.5A patent/CN107954726A/en not_active Withdrawn
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110204322A (en) * | 2019-05-15 | 2019-09-06 | 唐山市凯伦保温材料有限公司 | A kind of mullite insulating fire brick and preparation method thereof |
CN110204322B (en) * | 2019-05-15 | 2021-07-27 | 唐山市凯伦保温材料有限公司 | Mullite heat-insulating refractory brick and preparation method thereof |
CN115417682A (en) * | 2022-09-30 | 2022-12-02 | 安徽瑞泰新材料科技有限公司 | Refractory brick for industrial kiln and preparation method thereof |
CN115417682B (en) * | 2022-09-30 | 2023-10-03 | 安徽瑞泰新材料科技有限公司 | Refractory brick for industrial kiln and preparation method thereof |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN103589201B (en) | High emissivity infrared energy-conserving radiation paint and preparation method thereof | |
CN102815951B (en) | Flame-resistant corrosion-resistant coating | |
CN107954745A (en) | Corrosion-resistant micro-pore mullite light fire brick and preparation method thereof | |
CN101768006B (en) | Lightweight refractory for glass smelting kiln | |
CN106187238A (en) | Bauxite composite refractory brick and its preparation method and application | |
CN106242593A (en) | Low creep andalusite composite refractory brick and its preparation method and application | |
CN107954742A (en) | Light porous refractory brick and preparation method thereof | |
CN107954739A (en) | Micropore bauxite chamotte light fire brick and preparation method thereof | |
CN107954700A (en) | Corrosion-resistant corundum refractory brick and preparation method thereof | |
CN106278299A (en) | Andalusite composite refractory brick and its preparation method and application | |
CN107226704A (en) | A kind of kiln saves castable with fire resisting | |
CN108017397A (en) | Refractory brick containing quartz sand and preparation method thereof | |
CN107056313A (en) | A kind of cement rotary kiln stove castable refractory | |
CN108002848A (en) | Refractory brick containing magnesium aluminate spinel and preparation method thereof | |
CN107954747A (en) | Corrosion-proof fire-resistant brick and preparation method thereof | |
CN107954726A (en) | Corrosion-resistant mullite firebrick and preparation method thereof | |
CN107954743A (en) | Corrosion-resistant light porous refractory brick and preparation method thereof | |
CN107954744A (en) | Micropore andalusite light fire brick and preparation method thereof | |
CN106278202A (en) | Light fire brick and preparation method thereof | |
CN106431434A (en) | Closed-pore bauxite based mullite material and preparing method thereof | |
CN107954740A (en) | Corrosion-resistant micropore alumine light fire brick and preparation method thereof | |
CN108002851A (en) | Refractory brick containing mullite and preparation method thereof | |
CN107954741A (en) | Micro-pore mullite light fire brick and preparation method thereof | |
CN108675771A (en) | A kind of alumina hollow ball kiln brick | |
CN106242542A (en) | Mullite composite refractory brick and its preparation method and application |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
WW01 | Invention patent application withdrawn after publication | ||
WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180424 |