CN104030706B - Regeneration pyrophillite carborundum carbon brick and preparation method thereof - Google Patents
Regeneration pyrophillite carborundum carbon brick and preparation method thereof Download PDFInfo
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- CN104030706B CN104030706B CN201410254835.XA CN201410254835A CN104030706B CN 104030706 B CN104030706 B CN 104030706B CN 201410254835 A CN201410254835 A CN 201410254835A CN 104030706 B CN104030706 B CN 104030706B
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Abstract
The invention provides a kind of pyrophillite carborundum carbon brick of regenerating taking the pyrophillite carborundum carbon brick discarded as primary raw material, because pyrophillite carborundum carbon brick is through sintering, hardness is higher than primary pyrophillite, and then is conducive to improve the intensity of regeneration pyrophillite carborundum carbon brick; Discarded pyrophillite carborundum carbon brick and graphite, additive and bauxite caking property are good simultaneously, can well get rid of the air of pug inside, and then reduce the porosity; In addition, the present invention, taking the pyrophillite carborundum carbon brick discarded as primary raw material, has not only reduced the cost of carbon brick, and has solved the pollution of discarded pyrophillite carborundum carbon brick to environment.
Description
Technical field
The present invention relates to technical field of inorganic material, relate in particular to regeneration pyrophillite carborundum carbon brick and system thereofPreparation Method.
Background technology
The main component of pyrophyllite carborundum carbon brick is pyrophyllite 30～60%, graphite 5～15%, carborundum5～15% and bauxite 5～15%, be a kind of important refractory material, be widely used in iron and steel produce in molten ironThe interior clip of transporting equipment hot-metal bottle, it has following advantage for laying bricks in hot-metal bottle: 1) application leaf is curedStone matter carbon brick can dwindle brickwork joint in the time of access molten iron, seldom occurs oozing iron phenomenon; Meanwhile, due at high temperatureUnder, brick surface is taking tridymite as main existence form, is smooth ceramic plane, thereby increased brick withThe angle of wetting at slag interface, makes the interface slag Bao Bishang of being attached to not easy to hang, reduces the erosion of slag to bag wall;2) hardness of bauxite is very high, and wearability and refractoriness be also higher than pyrophyllite, thereby matrix bauxiteFine powder, can form mullite phase, improves refractoriness and the dilatancy of matrix; 3) graphite is not to slagWettability, makes carbon brick that congruent melting at high temperature not occur, refractoriness is high, and adds graphite can make brickThermal conductivity, thermal shock resistance significantly improve; 4) SiC is a kind of good refractory material, have high temperature resistant,Resistance to erosion, high strength, wear-resisting, the coefficient of expansion is little and the advantage of high-termal conductivity, adds a fairly large number of SiCFine powder, can strengthen the performance of matrix, can also prevent graphite oxidation simultaneously.
But, along with China's iron and steel production capacity fast development, the refractory material pyrophyllite carborundum carbon brick of consumptionAlso be more and more, at present, pyrophyllite carborundum carbon brick is all to adopt protophyll alabaster, graphite, carbonizationSilicon is main material production, and raw material is had to stronger dependence, and cost is higher; And due to protophyll alabasterHardness is lower, in batching mixed grind process, easily occurs crushing phenomenon again, causes resin to pyrophylliteGrain parcel is bad, affects the mildness of pug, and compacting posterior spiracle rate is generally 10% left and right, and normal temperatureCompressive resistance is on the low side, only has 35MPa left and right.
Therefore, seek a kind of pyrophyllite carborundum carbon brick, not only there is the characteristic that the porosity is low, intensity is highAnd production cost is low is the technical problem of the required solution of current pyrophyllite silicon carbide carbon brick.
Summary of the invention
In view of this, technical problem to be solved by this invention is to provide a kind of regeneration pyrophillite carborundumCarbon brick and preparation method thereof, regeneration pyrophillite carborundum carbon brick provided by the invention have the low porosity andHigh voltage endurance capability, and production cost is low.
The invention provides a kind of regeneration pyrophillite carborundum carbon brick, in parts by weight, comprising:
45～65 parts of discarded pyrophillite carborundum carbon bricks;
25～45 parts of bauxites;
3～6 parts, graphite;
4～10 parts of additives;
2～4 parts of resin binders;
Described additive is any one or two kinds in carborundum and technique silicon.
Preferably, described discarded pyrophillite carborundum carbon brick is that particle diameter is the discarded pyrophillite of 5～3mmCarborundum carbon brick, the discarded pyrophillite carborundum carbon brick that particle diameter is 3～1mm and particle diameter are 1～0mmAny one or a few in discarded pyrophillite carborundum carbon brick.
Preferably, described discarded pyrophillite carborundum carbon brick is that particle diameter is the discarded pyrophillite of 5～3mmCarborundum carbon brick, the discarded pyrophillite carborundum carbon brick that particle diameter is 3～1mm and particle diameter are 1～0mmThe mixture of discarded pyrophillite carborundum carbon brick.
Preferably, described discarded pyrophillite carborundum carbon brick, in parts by weight, comprising:
Particle diameter is 5～20 parts of the discarded pyrophillite carborundum carbon bricks of 5～3mm;
Particle diameter is 25～35 parts of the discarded pyrophillite carborundum carbon bricks of 3～1mm;
Particle diameter is 5～15 parts of the discarded pyrophillite carborundum carbon bricks of 1～0mm.
Preferably, described additive is mixture or the carborundum of carborundum and technique silicon.
Preferably, described resin binder is phenolic resins.
The present invention also provides a kind of preparation method of the pyrophillite carborundum carbon brick of regenerating, and comprising:
1) by pyrophillite carborundum carbon brick discarded 45～65 weight portions, 25～45 weight portion bauxites, 3～6Weight portion graphite, 4～10 weight portion additives and 2～4 parts by weight resin adhesive mixed grinds, obtain mixed grind material;
Described additive is one or both in carborundum and technique silicon;
2), by the mixed grind material moulding obtaining, the pyrophillite carborundum carbon brick that obtains regenerating is base just;
3) will regenerate that just base is dry for pyrophillite carborundum carbon brick, pyrophillite carborundum carbon brick obtains regenerating.
Preferably, described discarded pyrophillite carborundum carbon brick is that particle diameter is the discarded pyrophillite of 5～3mmCarborundum carbon brick, the discarded pyrophillite carborundum carbon brick that particle diameter is 3～1mm and particle diameter are 1～0mmOne or more in discarded pyrophillite carborundum carbon brick.
Preferably, described step 2) be specially: the mixed grind material obtaining is passed through to the friction of 150～1000 tonsBrick machine hits 6～15 times, and the pyrophillite carborundum carbon brick that obtains regenerating is base just.
Preferably, described step 3) described dry baking is at natural drying 18～36 hours, then180～250 DEG C are toasted 18～36 hours.
Compared with prior art, the pyrophillite of regeneration pyrophillite carborundum carbon brick provided by the invention to discardCarborundum carbon brick is primary raw material, because discarded pyrophillite carborundum carbon brick is through sintering, hardness higher thanPrimary pyrophillite, and then be conducive to improve the intensity of regeneration pyrophillite carborundum carbon brick; Discarded leaf simultaneouslyCured stone carborundum carbon brick and graphite, additive and bauxite caking property are good, can well get rid of pugInner air, and then reduce the porosity, experimental result shows, protophyll alabaster carbon provided by the inventionBrick intensity 50MPa, the porosity is low to moderate 7.2%; In addition the pyrophillite carborundum carbon brick of the present invention to discard,For primary raw material, not only reduce the cost of carbon brick, and solved discarded pyrophillite carborundum carbon brickTo the pollution of environment.
Detailed description of the invention
The invention provides a kind of regeneration pyrophillite carborundum carbon brick, in parts by weight, comprising:
30～60 parts of discarded pyrophillite carborundum carbon bricks;
25～45 parts of bauxites;
3～6 parts, graphite;
6～10 parts of additives;
2～4 parts of resin binders;
Described additive is one or both in carborundum and technique silicon.
Concrete, described discarded pyrophillite carborundum carbon brick is preferably the discarded leaf that particle diameter is 5～3mmCured stone carborundum carbon brick, discarded pyrophillite carborundum carbon brick and particle diameter that particle diameter is 3～1mm are 1～0mmDiscarded pyrophillite carborundum carbon brick in any one or a few; More preferably particle diameter is 5～3mmThe mixing of the discarded pyrophillite carborundum carbon brick that discarded pyrophillite carborundum carbon brick and particle diameter are 3～1mmThe discarded leaf that the discarded pyrophillite carborundum carbon brick that thing, particle diameter are 5～3mm and particle diameter are 1～0mmDiscarded pyrophillite carborundum carbon brick and particle diameter that the mixture of cured stone carborundum carbon brick, particle diameter are 3～1mmBe the discarded mixture of pyrophillite carborundum carbon brick and the discarded pyrophillite of 5～3mm of 1～0mmThe discarded pyrophillite carborundum carbon brick that carborundum carbon brick, particle diameter are 3～1mm and particle diameter are 1～0mmThe mixture of discarded pyrophillite carborundum carbon brick; The discarded pyrophillite that more preferably particle diameter is 5～3mmThe discarded pyrophillite carborundum carbon brick that carborundum carbon brick, particle diameter are 3～1mm and particle diameter are 1～0mmThe mixture of discarded pyrophillite carborundum carbon brick; Described particle diameter is the discarded pyrophillite carbonization of 5～3mmWhat the discarded pyrophillite carborundum carbon brick that silicon-carbon brick, particle diameter are 3～1mm and particle diameter were 1～0mm is discardedThe mixture of pyrophillite carborundum carbon brick in, in parts by weight, what described particle diameter was 5～3mm is discardedPyrophillite carborundum carbon brick be preferably 10～20 parts, the discarded pyrophillite carbon that described particle diameter is 3～1mmSiClx carbon brick is preferably 25～35 parts, the discarded pyrophillite carborundum carbon brick grain that described particle diameter is 1～0mmFootpath is 5～15 parts; In regeneration pyrophillite carborundum carbon brick of the present invention, described discarded pyrophillite carbonSiClx carbon brick is preferably 50～60 weight portions.
The present invention does not have particular/special requirement, those skilled in the art to described discarded pyrophillite carborundum carbon brickThe discarded pyrophillite carborundum carbon brick of knowing, is preferably used pyrophillite carborundum carbon brick;The primary raw material of the present invention using discarded pyrophillite carborundum carbon brick as regeneration pyrophillite carborundum carbon brick,Because the components such as the graphite in discarded pyrophillite carborundum carbon brick, pyrophillite, carborundum are completely bonding,Wetting good with resin binder, when compacting, air that can fine eliminating pug inside, reduces poreRate, meanwhile, carbon brick internal voids reduces, and resin binder is filled fully, also makes after regenerationCarbon brick intensity improves, in addition, and because pyrophillite carborundum carbon brick forms good through high temperature cabonization in useGood carbon web frame, so discarded carbon brick also can improve the carbonization of regeneration pyrophillite owing to containing carbon web frameThe intensity of silicon-carbon brick.
In regeneration pyrophillite carborundum carbon brick of the present invention, in parts by weight, described bauxite is excellentElect 30～40 weight portions as; Described graphite is preferably 4～5 parts.
In the present invention, described additive is any one or two kinds in carborundum and technique silicon, more preferablyFor mixture or the carborundum of carborundum and technique silicon; In the mixture of described carborundum and technique silicon, withParts by weight meter, described carborundum is preferably 4～7 parts, and more preferably 5～6 parts, described technique silicon is preferredBe 0.5～2 part, more preferably 0.8～1.2 part; In regeneration pyrophillite carborundum carbon brick of the present invention,In parts by weight, described additive is preferably 5～8 parts, more preferably 6～7 parts.
Described resin binder is preferably phenolic resins, most preferably is liquid thermosetting phenolic resins; ThisIn bright described regeneration pyrophillite carborundum carbon brick, in parts by weight, described resin binder is preferably2.5～3.5 parts, more preferably 3 parts.
The preparation method who the invention provides a kind of pyrophillite carborundum carbon brick of regenerating, comprising:
1) by pyrophillite carborundum carbon brick discarded 45～65 weight portions, 25～45 weight portion bauxites, 3～6Weight portion graphite, 4～10 weight portion additives and 2～4 parts by weight resin adhesive mixed grinds, obtain mixed grind material;
Described additive is one or both in carborundum and technique silicon;
2), by the mixed grind material moulding obtaining, the pyrophillite carborundum carbon brick that obtains regenerating is base just;
3) will regenerate that just base is dry for pyrophillite carborundum carbon brick, pyrophillite carborundum carbon brick obtains regenerating.
The present invention by pyrophillite carborundum carbon brick discarded 45～65 weight portions, 25～45 weight portion bauxites,3～6 weight portion graphite, 4～10 weight portion additives and 2～4 parts by weight resin adhesive mixed grinds, mixedGrind material; Wherein, described discarded pyrophillite carborundum carbon brick is preferably the discarded leaf that particle diameter is 5～3mmCured stone carborundum carbon brick, discarded pyrophillite carborundum carbon brick and particle diameter that particle diameter is 3～1mm are 1～0mmDiscarded pyrophillite carborundum carbon brick in any one or a few; More preferably particle diameter is 5～3mmThe mixing of the discarded pyrophillite carborundum carbon brick that discarded pyrophillite carborundum carbon brick and particle diameter are 3～1mmThe discarded leaf that the discarded pyrophillite carborundum carbon brick that thing, particle diameter are 5～3mm and particle diameter are 1～0mmDiscarded pyrophillite carborundum carbon brick and particle diameter that the mixture of cured stone carborundum carbon brick, particle diameter are 3～1mmBe the discarded mixture of pyrophillite carborundum carbon brick and the discarded pyrophillite of 5～3mm of 1～0mmThe discarded pyrophillite carborundum carbon brick that carborundum carbon brick, particle diameter are 3～1mm and particle diameter are 1～0mmThe mixture of discarded pyrophillite carborundum carbon brick; The discarded pyrophillite that more preferably particle diameter is 5～3mmThe discarded pyrophillite carborundum carbon brick that carborundum carbon brick, particle diameter are 3～1mm and particle diameter are 1～0mmThe mixture of discarded pyrophillite carborundum carbon brick; Described particle diameter is the discarded pyrophillite carbonization of 5～3mmWhat the discarded pyrophillite carborundum carbon brick that silicon-carbon brick, particle diameter are 3～1mm and particle diameter were 1～0mm is discardedThe mixture of pyrophillite carborundum carbon brick in, in parts by weight, what described particle diameter was 5～3mm is discardedPyrophillite carborundum carbon brick be preferably 10～20 parts, the discarded pyrophillite carbon that described particle diameter is 3～1mmSiClx carbon brick is preferably 25～35 parts, the discarded pyrophillite carborundum carbon brick grain that described particle diameter is 1～0mmFootpath is 5～15 parts; The present invention does not have particular/special requirement, this area to described discarded pyrophillite carborundum carbon brickDiscarded pyrophillite carborundum carbon brick known by the technical staff, is preferably used pyrophillite carbonizationSilicon-carbon brick; Described additive is any one or two kinds in carborundum and technique silicon, more preferably carbonizationThe mixture of silicon and technique silicon or carborundum; In the mixture of described carborundum and technique silicon, with weight portionNumber meter, described carborundum is preferably 4～7 parts, and more preferably 5～6 parts, described technique silicon is preferably 0.5～2Part, more preferably 0.8～1.2 part; Described resin binder is preferably phenolic resins, most preferably is liquid heatSolidity phenolic resins.
According to the present invention, described discarded pyrophillite carborundum carbon brick is preferably 50～60 weight portions; DescribedBauxite is preferably 30～40 weight portions; Described graphite is preferably 4～5 weight portions; Described additive is preferredBe 5～8 weight portions, more preferably 6～7 weight portions; Described resin binder is preferably 2.5～3.5 weight portions,More preferably 3 weight portions.
Concrete, the present invention is preferably first by pyrophillite carborundum carbon brick and 2～4 discarded 45～65 weight portionsParts by weight resin adhesive adds mill, mixed grind 1.5～4 minutes, and then add 25～45 weight portion aluminium alumSoil, 3～6 weight portion graphite and 4～10 weight portion additive mixed grinds, obtain mixed grind material, described mixed grind timeBetween be preferably 30～60 minutes, more preferably I 40～50 minutes; It is special that the present invention does not have the instrument of mixed grindRequirement, is preferably planetary type wheel mill.
By the mixed grind material moulding obtaining, concrete, the present invention preferably passes through 150～1000 by the mixed grind material obtainingThe friction press of ton hits 6～15 times, and the pyrophillite carborundum carbon brick that obtains regenerating is base just; Described leave againThe cured stone carborundum carbon brick just thickness of base is preferably 80～120mm; The briquetting pressure of described brick machine is preferably300～800 tons, more preferably 300～600 tons, the number of times of described strike is preferably 8～15 times, more preferablyIt is 10～13 times;
According to the present invention, by the just dry baking of base of the regeneration pyrophillite carborundum carbon brick obtaining, regeneratedPyrophillite carborundum carbon brick; Described dry baking is preferably first natural drying 18～36 hours, thenAt 200～250 DEG C, toast more preferably 20～30 hours described natural drying time 18～36 hours; InstituteState more preferably 210～220 DEG C of the temperature of baking; More preferably 20～30 hours time of described baking.
Regeneration pyrophillite carborundum carbon brick provided by the invention is taking the pyrophillite carborundum carbon brick discarded as mainRaw material, because discarded pyrophillite carborundum carbon brick is through sintering, hardness is higher than primary pyrophillite, and thenBe conducive to improve the intensity of regeneration pyrophillite carborundum carbon brick; Simultaneously discarded pyrophillite carborundum carbon brick withGraphite, additive and bauxite caking property are good, can well get rid of the air of pug inside, and thenReduce the porosity, experimental result shows, protophyll alabaster carbon brick intensity 50MPa provided by the invention, poreRate is low to moderate 7.2%; In addition, the present invention, taking the pyrophillite carborundum carbon brick discarded as primary raw material, not only fallsThe low cost of carbon brick, and solved the pollution of discarded pyrophillite carborundum carbon brick to environment.
In order further to understand the present invention, below in conjunction with embodiment to regeneration pyrophillite carbon provided by the inventionSiClx carbon brick and preparation method thereof is described in detail.
Embodiment 1～4
Discarded pyrophillite carborundum carbon brick and resin binder are mixed, and mixed grind 2 minutes, then addsBauxite, graphite, carborundum, industrial silicon and liquid thermosetting phenolic resins mixed grind 40 minutes, mixedGrind material;
Mixed grind material is hit 10 times by the friction press of 300 tons, and pyrophillite silicon carbide carbon obtains regeneratingBrick is base just.
Natural drying 1 day of the first base of the pyrophillite carborundum carbon brick of regenerating, then at 220 DEG C, toast 24 hours,Pyrophillite carborundum carbon brick obtains regenerating.
In the present embodiment, the addition of each raw material is referring to table 1, and table 1 is the embodiment of the present invention and comparative example preparationThe amount of the required raw material of regeneration pyrophillite carborundum carbon brick;
The regeneration pyrophillite carborundum carbon brick that embodiment is prepared carries out Performance Detection, and result is referring to table2, the performance test knot of the regeneration pyrophillite carborundum carbon brick that table 2 provides for the embodiment of the present invention and comparative exampleReally.
Comparative example 1～4
The preparation method of comparative example 1～4 is identical with embodiment 1; Raw material addition is referring to table 1, and table 1 is thisThe composition of the discarded pyrophillite carborundum carbon brick that inventive embodiments and comparative example provide;
The regeneration pyrophillite carborundum carbon brick that comparative example is prepared carries out Performance Detection, and result is referring to table2, the performance test knot of the regeneration pyrophillite carborundum carbon brick that table 2 provides for the embodiment of the present invention and comparative exampleReally.
Comparative example 5
Preparation method is identical with embodiment 1, and raw material consists of pyrophillite 60 weight portions, bauxite 30 weightsAmount part, graphite 4 weight portions, carborundum 5 weight portions, industrial silicon 1 weight portion, resin-bonding thing 3 weightsAmount part.
The proportioning composition of the regeneration pyrophillite carborundum carbon brick that table 1 provides for the embodiment of the present invention and comparative example
The performance test results of the regeneration pyrophillite carborundum carbon brick that table 2 embodiment of the present invention and comparative example provide
Can find out by table 2, the porosity of regeneration pyrophillite carborundum carbon brick provided by the invention is higher,And the compressive resistance under normal temperature is also all higher than 40MPa.
The explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof. ShouldPoint out, for those skilled in the art, under the premise without departing from the principles of the invention,Can also carry out some improvement and modification to the present invention, these improvement and modification also fall into right of the present invention and wantIn the protection domain of asking.
Claims (6)
1. a regeneration pyrophillite carborundum carbon brick, in parts by weight, comprising:
45～65 parts of discarded pyrophillite carborundum carbon bricks;
25～45 parts of bauxites;
3～6 parts, graphite;
4～10 parts of additives;
2～4 parts of resin binders;
Described additive is any one or two kinds in carborundum and technique silicon;
Described discarded pyrophillite carborundum carbon brick is that particle diameter is the discarded pyrophillite carbon of 5～3mmSiClx carbon brick, discarded pyrophillite carborundum carbon brick and particle diameter that particle diameter is 3～1mm are 1～0mmThe mixture of discarded pyrophillite carborundum carbon brick;
Particle diameter is 5～20 parts of the discarded pyrophillite carborundum carbon bricks of 5～3mm;
Particle diameter is 25～35 parts of the discarded pyrophillite carborundum carbon bricks of 3～1mm;
Particle diameter is 5～15 parts of the discarded pyrophillite carborundum carbon bricks of 1～0mm.
2. carbon brick according to claim 1, is characterized in that, described additive is carborundumMixture or carborundum with technique silicon.
3. carbon brick according to claim 1, is characterized in that, described resin binder is phenolUrea formaldehyde.
4. the regenerate preparation method of pyrophillite carborundum carbon brick, comprising:
1) by pyrophillite carborundum carbon brick discarded 45～65 weight portions, 25～45 weight portion bauxites,3～6 weight portion graphite, 4～10 weight portion additives and 2～4 parts by weight resin adhesive mixed grinds,To mixed grind material;
Described additive is one or both in carborundum and technique silicon;
Described discarded pyrophillite carborundum carbon brick is that particle diameter is the discarded pyrophillite carbon of 5～3mmSiClx carbon brick, discarded pyrophillite carborundum carbon brick and particle diameter that particle diameter is 3～1mm are 1～0mmThe mixture of discarded pyrophillite carborundum carbon brick;
Particle diameter is 5～20 parts of the discarded pyrophillite carborundum carbon bricks of 5～3mm;
Particle diameter is 25～35 parts of the discarded pyrophillite carborundum carbon bricks of 3～1mm;
Particle diameter is 5～15 parts of the discarded pyrophillite carborundum carbon bricks of 1～0mm
2), by the mixed grind material moulding obtaining, the pyrophillite carborundum carbon brick that obtains regenerating is base just;
3) the just dry baking of base of pyrophillite carborundum carbon brick of regenerating, pyrophillite carborundum obtains regeneratingCarbon brick.
5. method according to claim 4, is characterized in that, described step 2) be specially:The mixed grind material obtaining is hit 6～15 times by the friction press of 150～1000 tons, regeneratedPyrophillite carborundum carbon brick is base just.
6. method according to claim 4, is characterized in that, described step 3) described dryDry baking is at natural drying 18～36 hours, then 180～250 DEG C of bakings 18～36 hours.
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| CN104926329A (en) * | 2015-06-16 | 2015-09-23 | 湖南湘钢瑞泰科技有限公司 | Aluminum-silicon carbide brick and preparation method thereof |
| CN106554208A (en) * | 2015-09-28 | 2017-04-05 | 洛阳暖盈电子技术有限公司 | A kind of new alumina silica refractory |
| CN111606690B (en) * | 2020-06-05 | 2022-04-26 | 郑州市瑞沃耐火材料有限公司 | Aluminum silicon carbide carbon brick for hot metal bottle working layer |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102030547A (en) * | 2010-11-05 | 2011-04-27 | 王洪金 | Unfired pyrophyllite hot metal ladle lining material and preparation method thereof |
| CN103588493A (en) * | 2013-11-15 | 2014-02-19 | 浙江自立股份有限公司 | Preparation method for low-carbon aluminum-silicon-carbide carbon brick |
| CN103601522A (en) * | 2013-12-09 | 2014-02-26 | 湖南湘钢瑞泰科技有限公司 | Unfired brick and preparation method thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102030547A (en) * | 2010-11-05 | 2011-04-27 | 王洪金 | Unfired pyrophyllite hot metal ladle lining material and preparation method thereof |
| CN103588493A (en) * | 2013-11-15 | 2014-02-19 | 浙江自立股份有限公司 | Preparation method for low-carbon aluminum-silicon-carbide carbon brick |
| CN103601522A (en) * | 2013-12-09 | 2014-02-26 | 湖南湘钢瑞泰科技有限公司 | Unfired brick and preparation method thereof |
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