CN108178642A - A kind of hydration-resisting alkalinity high-temperature refractory and preparation method thereof - Google Patents
A kind of hydration-resisting alkalinity high-temperature refractory and preparation method thereof Download PDFInfo
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- CN108178642A CN108178642A CN201810066522.XA CN201810066522A CN108178642A CN 108178642 A CN108178642 A CN 108178642A CN 201810066522 A CN201810066522 A CN 201810066522A CN 108178642 A CN108178642 A CN 108178642A
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Abstract
The invention discloses a kind of hydration-resisting alkalinity high-temperature refractories and preparation method thereof, are related to technical field of refractory materials, include the raw material of following parts by weight：40 60 parts of 50 60 parts of dolomite, 15 30 parts of periclase, 10 22 parts of anorthite, 0.2 0.8 parts of 300 mesh of zircon, 0.6 1.2 parts of metal oxide, 0.3 1.2 parts of rare earth oxide, 0.2 0.6 parts of metallic aluminium powder, 0.2 0.6 parts of sodium metasilicate, 0.2 0.6 parts of carbon, 0.2 0.6 parts of swelling agent and 45wt% carbon acid solutions；Preparation method includes the following steps：(1) raw material is weighed；(2) it grinds；(3) light-water carburising surface is handled；(4) material mixes；(5) hydration-resisting alkalinity high-temperature refractory is prepared；The alkaline high-temperature refractory simple production process of the present invention, stability is good in a high temperauture environment, alkali resistant erosiveness is strong, hydration resistance is high, long lifespan, production cost is low and energy-saving efficiency is high.
Description
Technical field
The present invention relates to high-temperature refractory technical fields, and in particular to a kind of hydration-resisting alkalinity high-temperature refractory and its
Preparation method.
Background technology
Basic refractory is with magnesia, calcium oxide or the two refractory material as main component.Major product has magnesium
Matter, magnesium chromium matter, dolomite matter and lime refractories etc..Wherein magnesia, dolomite and calcium carbonate belong to strong basicity fire proofed wood
Material, magnesium chromium matter, chromium are magnesia, white olivine belongs to alkalescent refractory material, and feature is that refractoriness is higher, resist caustic slag energy
Power is strong, but with acid slag chemically reactive, be mainly used for alkaline converter, non-ferrous metal and cement rotary kiln etc.
Hydration resistance is the ability that basic refractory resists aquation in an atmosphere.It is whether basic refractory is sintered
One of good important indicator.But basic refractory of the prior art is in sintering, calcium oxide therein, magnesia,
Especially calcium oxide, easy to absorb moisture aquation, generates hydroxide in an atmosphere, makes the loose damage of product, shortens alkaline fire proofed wood
The usage time of material products.
Invention content
For problems of the prior art, the present invention provides a kind of hydration-resisting alkalinity high-temperature refractory and its systems
Preparation Method, the high-temperature refractory simple production process, stability is good in a high temperauture environment, alkali resistant erosiveness is strong, water resistant
Change performance height, long lifespan, production cost is low and energy-saving efficiency is high.
In order to achieve the above object, the present invention is achieved through the following technical solutions：
A kind of hydration-resisting alkalinity high-temperature refractory includes the raw material of following parts by weight：
50-60 parts of dolomite, 15-30 parts of periclase, 10-22 parts of anorthite, 0.2-0.8 parts of 300 mesh of zircon, metal oxygen
0.6-1.2 parts of compound, 0.3-1.2 parts of rare earth oxide, 0.2-0.6 parts of metallic aluminium powder, 0.2-0.6 parts of sodium metasilicate, carbon
40-60 parts of 0.2-0.6 parts, 0.2-0.6 parts of swelling agent and 45wt% carbon acid solutions.
Preferably, a kind of hydration-resisting alkalinity high-temperature refractory includes the raw material of following parts by weight：
Include the raw material of following parts by weight meter：58 parts of dolomite, 20 parts of periclase, 15 parts of anorthite, 300 mesh of zircon
0.42 part, 0.9 part of metal oxide, 0.64 part of rare earth oxide, 0.33 part of metallic aluminium powder, 0.45 part of sodium metasilicate, carbon
55 parts of 0.36 part, 0.35 part of swelling agent and 45wt% carbon acid solutions.
Preferably, the metal oxide for one kind in iron oxide, magnesia, calcium oxide, titanium oxide and zinc oxide or
Several combinations.
Preferably, the rare earth oxide is one or more of lanthana, cerium oxide, praseodymium oxide and neodymia
With reference to.
Preferably, the carbon is the combination of one or more of graphite, carbon black and needle coke.
Preferably, the metal oxide, rare earth oxide, metallic aluminium powder, sodium metasilicate, carbon purity >=
90%, granularity≤100 micron.
Preferably, the swelling agent is kyanite or andalusite.
The invention also discloses a kind of preparation methods of hydration-resisting alkalinity high-temperature refractory, include the following steps：
(1) raw material is weighed：Raw material weight number according to hydration-resisting alkalinity high-temperature refractory weighs each raw material；
(2) it grinds：First dolomite, periclase, anorthite and swelling agent are mixed, are put in 400-500 celsius temperature stoves
Middle calcining 2-3 hours after taking-up cooling, is sent into ball mill to grind or be placed in three-roll grinder and be ground, time 1-3 hour,
It is 200-500 mesh mixtures A up to granular size, it is spare；
(3) light-water carburising surface is handled：Mixture A obtained in step (2) is added to above-mentioned parts by weight
In 45wt% carbon acid solutions, be warming up to 400-700 degrees Celsius, by the carbon dioxide that is hydrolyzed under 45wt% carbon acid solution high temperature and
The mixed gas of vapor carries out combined processing to mixture A surfaces, makes free calcium oxide existing for mixture A surfaces with mixing
Water, carbon dioxide reaction in gas generate one layer of fine and close calcium carbonate preventing hydration film, and the time is for 1-3 hours to get mixing
Object B；
(4) material mixes：300 mesh of zircon, metal oxide, dilute is sequentially added in material B obtained into step (3)
Earth elements oxide, metallic aluminium powder, sodium metasilicate and carbon are uniformly mixed, and then rotating speed control is in 2000-3500r/min, stirring
Time control was at 2-3 hours；It is added in high speed mixer with Sprayable, discharged after stirring 35-50min, sealing ageing mixture 4-10
After hour, isostatic cool pressing is pressed into base into base or machine；
(5) hydration-resisting alkalinity high-temperature refractory is prepared：The green body prepared in step (4) is put into hothouse,
, then will be in green body feeding electrical kiln dry 8-12 hour under 120-200 degrees Celsius, being passed through nitrogen, to be heated to 950-1200 Celsius
Degree keeps the temperature 6-10 hours to get hydration-resisting alkalinity high-temperature refractory.
Preferably, in the step (5) in hydration-resisting alkalinity high-temperature refractory obtained calcium oxide content >=
10wt%, content≤70wt% of magnesia, content≤1.2wt% of aluminium oxide.
The present invention has following advantageous effect：The high-temperature refractory simple production process, in a high temperauture environment surely
It is qualitative it is good, alkali resistant erosiveness is strong, hydration resistance is high, long lifespan, production cost is low and energy-saving efficiency is high；Specific effect is such as
Under：
(1) metal oxide is added in raw material of the invention, metal oxide is added in calcium magnesite, can the side's of being solid-solution in magnesium
In stone crystal, liquid phase is generated after the fusing of another aspect metal oxide, promotes growing up for calcium oxide and magnesia crystal, dolomite
It is present in the contiguous network of periclase formation, shields water vapour and dolomite contact, good sintering reduces moisture again
The channel of infiltration.
(2) raw material in the present invention is added to rare earth oxide, the thermodynamic (al) stability of rare earth oxide
Suitable with magnesia and calcium oxide, a small amount of rare earth oxide can promote the sintering of material, improve its hydration resistance, and add
Entering a small amount of rare earth element can promote the generation of magnesia and calcium oxide crystal grain to develop, and reduce the specific surface area of calcium oxide, improve
The microstructure of material increases the slag resistance of material.
(3) raw material in the present invention is added to metallic aluminium powder, and calcium oxide is burnt under a nitrogen after being mixed with metallic aluminium, metal
Aluminium can soak calcium oxide surface, using the apparent activation of liquid-phase sintering, make particle re-arrangement, increase the bulk density of material, so as to
Increase the hydration resistance and corrosion resistance of material.
(4) it is added to carbon in raw material of the invention, carbon has the advantages that intensity is high, heat-resisting and fire resisting, a small amount of carbon
The increase of element can improve the hardness and toughness of material grains, increase the wear resistence of material.
(5) sodium metasilicate is added in raw material of the invention, the addition of a small amount of sodium metasilicate can make calcium oxide crystal growth, shape
Into relatively stable calcium oxide crystal, the density of material is improved, so as to reduce the surface of calcium oxide and contact with moisture, is improved
The hydration resistance of material.
(6) heretofore described swelling agent is kyanite or andalusite, shrinks, prevents for compensating refractory material hardening process
Only crack.
(7) a kind of preparation method of hydration-resisting alkalinity high-temperature refractory is also disclosed in the present invention, in the preparation method
Compound place is carried out to surface of material by the carbon dioxide and the mixed gas of vapor that are hydrolyzed under 45wt% carbon acid solution high temperature
Reason makes free calcium oxide existing for surface of material generate one layer of fine and close carbonic acid with water, the carbon dioxide reaction in mixed gas
Calcium preventing hydration film, so as to improve the water proofing property of material and alkali resistant erosiveness.
Specific embodiment
The specific embodiment of the present invention is further described with reference to embodiment, following embodiment is only used for more
Technical scheme of the present invention is clearly demonstrated, and is not intended to limit the protection scope of the present invention and limits the scope of the invention.
Embodiment 1
A kind of hydration-resisting alkalinity high-temperature refractory includes the raw material of following parts by weight：
It is 50 parts of dolomite, 15 parts of periclase, 10 parts of anorthite, 0.2 part of 300 mesh of zircon, 0.6 part of metal oxide, dilute
0.3 part of earth elements oxide, 0.2 part of metallic aluminium powder, 0.2 part of sodium metasilicate, 0.2 part of carbon, 0.2 part of swelling agent and 45wt% carbonic acid
40 parts of solution.
Metal oxide is iron oxide and zinc oxide according to mass ratio 1:1 composition.
Rare earth oxide is lanthana and cerium oxide according to mass ratio 3:2 compositions.
Carbon is graphite.
Metal oxide purity is 95%, and rare earth oxide purity is 98%, and metallic aluminium powder purity is 94%, silicic acid
Sodium purity is 92%, and the purity of carbon is 91%, and granularity is 50 microns.
Swelling agent is kyanite.
A kind of preparation method of hydration-resisting alkalinity high-temperature refractory is also disclosed in the present embodiment, is included the following steps：
(1) raw material is weighed：Raw material weight number according to hydration-resisting alkalinity high-temperature refractory weighs each raw material；
(2) it grinds：First dolomite, periclase, anorthite and swelling agent are mixed, is put in 400 celsius temperature stoves and forges
It burns 3 hours, after taking-up cooling, is sent into ball mill to grind or be placed in three-roll grinder and grind, 3 hours time is to get particle
Size is 500 mesh mixture A, spare；
(3) light-water carburising surface is handled：Mixture A obtained in step (2) is added to above-mentioned parts by weight
In 45wt% carbon acid solutions, 400 degrees Celsius are warming up to, is steamed by the carbon dioxide and water that are hydrolyzed under 45wt% carbon acid solution high temperature
The mixed gas of gas carries out combined processing to mixture A surfaces, makes free calcium oxide and mixed gas existing for mixture A surfaces
In water, carbon dioxide reaction generate one layer of fine and close calcium carbonate preventing hydration film, the time for 1 hour to get mixture B；
(4) material mixes：300 mesh of zircon, metal oxide, dilute is sequentially added in material B obtained into step (3)
Earth elements oxide, metallic aluminium powder, sodium metasilicate and carbon are uniformly mixed, and then rotating speed control is in 2000r/min, mixing time
Control was at 3 hours；It is added in high speed mixer with Sprayable, discharged after stirring 35min, sealing ageing mixture is cold etc. after 10 hours
Static pressure is pressed into base into base or machine；
(5) hydration-resisting alkalinity high-temperature refractory is prepared：The green body prepared in step (4) is put into hothouse, 120
It is 12 hours dry under degree Celsius, then green body is sent into electrical kiln, nitrogen is passed through and is heated to 950 degrees Celsius, keep the temperature 10 hours, i.e.,
Obtain hydration-resisting alkalinity high-temperature refractory.
The content of calcium oxide is 50wt% in hydration-resisting alkalinity high-temperature refractory obtained in step (5), magnesia
Content is 30wt%, and the content of aluminium oxide is 1.2wt%.
Embodiment 2
A kind of hydration-resisting alkalinity high-temperature refractory includes the raw material of following parts by weight：
It is 60 parts of dolomite, 30 parts of periclase, 22 parts of anorthite, 0.8 part of 300 mesh of zircon, 1.2 parts of metal oxide, dilute
1.2 parts of earth elements oxide, 0.6 part of metallic aluminium powder, 0.6 part of sodium metasilicate, 0.6 part of carbon, 0.6 part of swelling agent and 45wt% carbonic acid
60 parts of solution.
Metal oxide is magnesia and zinc oxide according to mass ratio 1:1 composition.
Rare earth oxide is cerium oxide, praseodymium oxide and neodymia according to mass ratio 1:2:2 compositions.
Carbon is in needle coke.
Metal oxide, rare earth oxide, metallic aluminium powder, sodium metasilicate, carbon purity be all higher than >=90%, granularity
It is 100 microns.
Swelling agent is andalusite.
A kind of preparation method of hydration-resisting alkalinity high-temperature refractory is also disclosed in the present embodiment, is included the following steps：
(1) raw material is weighed：Raw material weight number according to hydration-resisting alkalinity high-temperature refractory weighs each raw material；
(2) it grinds：First dolomite, periclase, anorthite and swelling agent are mixed, is put in 500 celsius temperature stoves and forges
It burns 2 hours, after taking-up cooling, is sent into ball mill to grind or be placed in three-roll grinder and grind, 1 hour time is to get particle
Size is 200 mesh mixture A, spare；
(3) light-water carburising surface is handled：Mixture A obtained in step (2) is added to above-mentioned parts by weight
In 45wt% carbon acid solutions, 700 degrees Celsius are warming up to, is steamed by the carbon dioxide and water that are hydrolyzed under 45wt% carbon acid solution high temperature
The mixed gas of gas carries out combined processing to mixture A surfaces, makes free calcium oxide and mixed gas existing for mixture A surfaces
In water, carbon dioxide reaction generate one layer of fine and close calcium carbonate preventing hydration film, the time for 3 hours to get mixture B；
(4) material mixes：300 mesh of zircon, metal oxide, dilute is sequentially added in material B obtained into step (3)
Earth elements oxide, metallic aluminium powder, sodium metasilicate and carbon are uniformly mixed, and then rotating speed control is in 3500r/min, mixing time
Control was at 2 hours；It is added in high speed mixer with Sprayable, discharged after stirring 50min, sealing ageing mixture is cold etc. quiet after 4 hours
It is pressed into base or machine is pressed into base；
(5) hydration-resisting alkalinity high-temperature refractory is prepared：The green body prepared in step (4) is put into hothouse, 200
It is 8 hours dry under degree Celsius, then green body is sent into electrical kiln, nitrogen is passed through and is heated to 1200 degrees Celsius, keep the temperature 6 hours, i.e.,
Obtain hydration-resisting alkalinity high-temperature refractory.
The content of calcium oxide is 40wt% in hydration-resisting alkalinity high-temperature refractory obtained in step (5), magnesia
Content is 20wt%, and the content of aluminium oxide is 0.8wt%.
Embodiment 3
A kind of hydration-resisting alkalinity high-temperature refractory includes the raw material of following parts by weight：
It is 45 parts of dolomite, 20 parts of periclase, 18 parts of anorthite, 0.6 part of 300 mesh of zircon, 1.1 parts of metal oxide, dilute
0.9 part of earth elements oxide, 0.4 part of metallic aluminium powder, 0.35 part of sodium metasilicate, 0.48 part of carbon, 0.5 part of swelling agent and 45wt% carbon
48 parts of acid solution.
Metal oxide is iron oxide, calcium oxide and zinc oxide according to mass ratio 1:1:2 compositions.
Rare earth oxide is lanthana.
Carbon is graphite and carbon black according to mass ratio 3:4 compositions.
Metal oxide, rare earth oxide, metallic aluminium powder, sodium metasilicate, carbon purity >=90%, granularity≤
100 microns.
Swelling agent is andalusite.
A kind of preparation method of hydration-resisting alkalinity high-temperature refractory is also disclosed in the present embodiment, is included the following steps：
(1) raw material is weighed：Raw material weight number according to hydration-resisting alkalinity high-temperature refractory weighs each raw material；
(2) it grinds：First dolomite, periclase, anorthite and swelling agent are mixed, are put in 400-500 celsius temperature stoves
Middle calcining 2-3 hours after taking-up cooling, is sent into ball mill to grind or be placed in three-roll grinder and be ground, time 1-3 hour,
It is 200-500 mesh mixtures A up to granular size, it is spare；
(3) light-water carburising surface is handled：Mixture A obtained in step (2) is added to above-mentioned parts by weight
In 45wt% carbon acid solutions, 600 degrees Celsius are warming up to, is steamed by the carbon dioxide and water that are hydrolyzed under 45wt% carbon acid solution high temperature
The mixed gas of gas carries out combined processing to mixture A surfaces, makes free calcium oxide and mixed gas existing for mixture A surfaces
In water, carbon dioxide reaction generate one layer of fine and close calcium carbonate preventing hydration film, the time for 2.5 hours to get mixture B；
(4) material mixes：300 mesh of zircon, metal oxide, dilute is sequentially added in material B obtained into step (3)
Earth elements oxide, metallic aluminium powder, sodium metasilicate and carbon are uniformly mixed, and then rotating speed control is in 3000r/min, mixing time
Control was at 2.6 hours；It is added in high speed mixer with Sprayable, discharged after stirring 45min, sealing ageing mixture is cold etc. after 8 hours
Static pressure is pressed into base into base or machine；
(5) hydration-resisting alkalinity high-temperature refractory is prepared：The green body prepared in step (4) is put into hothouse, 150
It is 10 hours dry under degree Celsius, then green body is sent into electrical kiln, nitrogen is passed through and is heated to 1150 degrees Celsius, keep the temperature 8 hours, i.e.,
Obtain hydration-resisting alkalinity high-temperature refractory.
In step (5) in hydration-resisting alkalinity high-temperature refractory obtained the content of calcium oxide for 60wt%, magnesia
Content for 50wt%, the content of aluminium oxide is 0.8wt%.
Comparative example
Hydration-resisting alkalinity high-temperature refractory obtained in embodiment 1-3 is tested for the property, is as a result recorded in following table
1：
Table 1
| Product test index | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Porosity % | 65 | 70 | 68 |
| Bulk density g/cm3 | 12 | 8 | 11 |
| Intensity MPa | 85 | 83 | 89 |
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, although with reference to aforementioned reality
Example is applied the present invention is described in detail, it for those skilled in the art, still can be to aforementioned each implementation
Technical solution recorded in example modifies or carries out equivalent replacement to which part technical characteristic.All essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (9)
1. a kind of hydration-resisting alkalinity high-temperature refractory, which is characterized in that including following raw material by weight：Dolomite
50-60 parts, 15-30 parts of periclase, 10-22 parts of anorthite, 0.2-0.8 parts of 300 mesh of zircon, 0.6-1.2 parts of metal oxide,
0.3-1.2 parts of rare earth oxide, 0.2-0.6 parts of metallic aluminium powder, 0.2-0.6 parts of sodium metasilicate, 0.2-0.6 parts of carbon, expansion
40-60 parts of 0.2-0.6 parts of agent and 45wt% carbon acid solutions.
2. hydration-resisting alkalinity high-temperature refractory according to claim 1, which is characterized in that including following parts by weight meter
Raw material：58 parts of dolomite, 20 parts of periclase, 15 parts of anorthite, 0.42 part of 300 mesh of zircon, 0.9 part of metal oxide, rare earth
0.64 part of element oxide, 0.33 part of metallic aluminium powder, 0.45 part of sodium metasilicate, 0.36 part of carbon, 0.35 part of swelling agent and 45wt%
55 parts of carbon acid solution.
3. hydration-resisting alkalinity high-temperature refractory according to claim 1, which is characterized in that the metal oxide is oxygen
Change the combination of one or more of iron, magnesia, calcium oxide, titanium oxide and zinc oxide.
4. hydration-resisting alkalinity high-temperature refractory according to claim 1, which is characterized in that the rare earth oxide
For the combination of one or more of lanthana, cerium oxide, praseodymium oxide and neodymia.
5. hydration-resisting alkalinity high-temperature refractory according to claim 1, which is characterized in that the carbon is graphite, carbon
The combination of one or more of black and needle coke.
6. hydration-resisting alkalinity high-temperature refractory according to claim 1, which is characterized in that the metal oxide, dilute
Earth elements oxide, metallic aluminium powder, sodium metasilicate, carbon purity >=90%, granularity≤100 micron.
7. hydration-resisting alkalinity high-temperature refractory according to claim 1, which is characterized in that the swelling agent is kyanite
Or andalusite.
8. a kind of preparation method of such as claim 1-7 any one of them hydration-resisting alkalinity high-temperature refractories, feature exist
In including the following steps：
(1) raw material is weighed：Raw material weight number according to hydration-resisting alkalinity high-temperature refractory weighs each raw material；
(2) it grinds：First dolomite, periclase, anorthite and swelling agent are mixed, is put in 400-500 celsius temperature stoves and forges
It burns 2-3 hours, after taking-up cooling, is sent into ball mill to grind or be placed in three-roll grinder and grind, time 1-3 hour, grinding
To granular size for 200-500 mesh to get mixture A, it is spare；
(3) light-water carburising surface is handled：Mixture A obtained in step (2) is added to the 45wt% carbon of above-mentioned parts by weight
In acid solution, 400-700 degrees Celsius is warming up to, passes through the carbon dioxide that is hydrolyzed under 45wt% carbon acid solution high temperature and vapor
Mixed gas carries out combined processing to mixture A surfaces, makes in free calcium oxide existing for mixture A surfaces and mixed gas
Water, carbon dioxide reaction generate one layer of fine and close calcium carbonate preventing hydration film, and the time is for 1-3 hours to get mixture B；
(4) material mixes：300 mesh of zircon, metal oxide, rare earth member are sequentially added in material B obtained into step (3)
Plain oxide, metallic aluminium powder, sodium metasilicate and carbon are uniformly mixed, and then rotating speed control is in 2000-3500r/min, mixing time
Control was at 2-3 hours；It is added in high speed mixer with Sprayable, discharged after stirring 35-50min, sealing ageing mixture 4-10 hours
Afterwards, isostatic cool pressing is pressed into base into base or machine；
(5) hydration-resisting alkalinity high-temperature refractory is prepared：The green body prepared in step (4) is put into hothouse, in 120-200
It is 8-12 hours dry under degree Celsius, then green body is sent into electrical kiln, nitrogen is passed through and is heated to 950-1200 degrees Celsius, keep the temperature 6-
10 hours to get hydration-resisting alkalinity high-temperature refractory.
9. the preparation method of hydration-resisting alkalinity high-temperature refractory according to claim 8, which is characterized in that the step
(5) in hydration-resisting alkalinity high-temperature refractory obtained the content of calcium oxide in >=10wt%, the content of magnesia≤
70wt%, content≤1.2wt% of aluminium oxide.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112250455A (en) * | 2020-10-30 | 2021-01-22 | 德清县钢友耐火材料有限公司 | High-temperature refractory material and manufacturing process method thereof |
| CN113443896A (en) * | 2021-05-10 | 2021-09-28 | 江苏苏嘉集团新材料有限公司 | High-hardness corrosion-resistant magnesia carbon brick and processing method thereof |
| CN114956792A (en) * | 2022-05-05 | 2022-08-30 | 武汉科技大学 | Rare earth metal ion modified calcium sand and preparation method thereof |
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| CN102093041A (en) * | 2010-12-28 | 2011-06-15 | 河南科技大学 | Zirconium dioxide and non-oxide in-situ composite alumina-carbon refractory material and preparation method thereof |
| CN102910917A (en) * | 2012-10-20 | 2013-02-06 | 江苏苏嘉集团新材料有限公司 | Magnesium-calcium-carbon refractory material |
| CN107235739A (en) * | 2017-06-30 | 2017-10-10 | 长兴泓矿炉料有限公司 | A kind of high CaO content low-loss magnesia-calica refractory castable and preparation method thereof |
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| CN101786894A (en) * | 2009-01-26 | 2010-07-28 | 通用电气公司 | Treated refractory materials and preparation method |
| CN102093041A (en) * | 2010-12-28 | 2011-06-15 | 河南科技大学 | Zirconium dioxide and non-oxide in-situ composite alumina-carbon refractory material and preparation method thereof |
| CN102910917A (en) * | 2012-10-20 | 2013-02-06 | 江苏苏嘉集团新材料有限公司 | Magnesium-calcium-carbon refractory material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112250455A (en) * | 2020-10-30 | 2021-01-22 | 德清县钢友耐火材料有限公司 | High-temperature refractory material and manufacturing process method thereof |
| CN113443896A (en) * | 2021-05-10 | 2021-09-28 | 江苏苏嘉集团新材料有限公司 | High-hardness corrosion-resistant magnesia carbon brick and processing method thereof |
| CN114956792A (en) * | 2022-05-05 | 2022-08-30 | 武汉科技大学 | Rare earth metal ion modified calcium sand and preparation method thereof |
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