CN104311076A - Anti-permeation type tundish light coating and preparation method thereof - Google Patents
Anti-permeation type tundish light coating and preparation method thereof Download PDFInfo
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- 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
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Abstract
The invention discloses an anti-permeation type tundish light coating and a preparation method thereof. The anti-permeation type tundish light coating comprises the following components in parts by weight: 73-99 parts of magnesite and/or forsterite with the granularity less than or equal to 1mm, 0.1-15 parts of quartz sand, 0.2-4 parts of sulfamic acid, 0.1-3.0 parts of an organic plasticizer agent, 0.5-5 parts of composite fiber, 0.02-0.25 part of high-efficiency air entraining agent and 0.01-0.15 part of metal aluminum powder. The coating disclosed by the invention is small in volume density, high in pressure resisting intensity after being baked, small in low melt and capable of effectively preventing slag permeation and solving the problems of a conventional light coating in construction, baking and use.
Description
Technical field
The present invention relates to unshape refractory technical field, particularly relate to a kind of impermeabilisation type tundish light paint and preparation method thereof.
Background technology
Tundish paint mainly with magnesia or forsterite for raw material, be disposable product, Year's consumption is very large.Along with the day by day exhausted of the fire-resistant resources such as magnesia and national energy-saving Environmental Protection Strategy in the urgent need to, tundish paint has gradually from heavy (1.8 ~ 2.4g/cm
3) to lightweight (1.2 ~ 1.8g/cm
3) trend of future development, there is features such as significantly saving materials, anti-cracking property and excellent thermal insulation performance.But the porosity of traditional tundish light paint is high, pore size large, the intensity of product is obviously on the low side, constructs or as easy as rolling off a log generation slump phenomenon in bake process, and impervious poor effect.In order to strengthen adhesivity and the plasticity-of coating further, improving the bonding strength of coating, generally adding the silicon powder of about 2 ~ 6wt%, clay, cement, water glass, poly-phosphate or its mixture etc.Once high-temperature slag infiltrates coating can produce a large amount of liquid phase, cause the refractoriness of coating significantly to reduce on the one hand, resistance to fouling is deteriorated; Cause coating to sinter on the other hand serious, bond with permanent liner and occur difficulty of disintegrating, add the labour intensity of workman, also have impact on the normal turnover of tundish.
Summary of the invention
For the deficiencies in the prior art, the object of the present invention is to provide that a kind of volume density is little, the high and low fusant of compressive strength is few and effectively can hinder the impermeabilisation type tundish light paint of slag penetration after baking, and a kind of preparation method of impermeabilisation type tundish light paint is provided, solves traditional lightweight coating at construction, baking and use Problems existing.
For solving the problems of the technologies described above, the present invention realizes by the following technical solutions: a kind of impermeabilisation type tundish light paint, be made up of the component of following weight part: the magnesia of granularity≤1mm and/or forsterite 73 ~ 99 weight part, quartz sand 0.1 ~ 15 weight part, thionamic acid 0.2 ~ 4 weight part, organic plasticizers 0.1 ~ 3.0 weight part, conjugated fibre 0.5 ~ 5 weight part, efficient air entrapment agent 0.02 ~ 0.25 weight part, metallic aluminium powder 0.01 ~ 0.15 weight part.
Above-mentioned impermeabilisation type tundish light paint, the grain composition of described magnesia and/or forsterite consists of: granularity is greater than 0.5mm and the particle being less than or equal to 1mm is 15 ~ 30wt%, granularity is greater than 0.2mm and the particle being less than or equal to 0.5mm is 10 ~ 25wt%, granularity is greater than 0.088mm and the particle being less than or equal to 0.2mm is 10 ~ 25wt%, and the particle that granularity is less than or equal to 0.088mm is 20 ~ 35wt%.
Above-mentioned impermeabilisation type tundish light paint, in described magnesia, the weight percentage of MgO is more than or equal to 91wt%; In described forsterite: CaO and Al
2o
3total weight percentage is less than or equal to 1wt%, K
2o and Na
2the total weight percentage of O is less than or equal to 0.1wt%, and igloss LOI is less than or equal to 5.0wt%.
Above-mentioned impermeabilisation type tundish light paint, described quartz sand is one or more in common quartz, refining quartz and fused quartz.
Above-mentioned impermeabilisation type tundish light paint, the grain composition of described quartz sand consists of: granularity be greater than 0.2mm and the particle being less than or equal to 0.5mm be 10 ~ 50wt%, granularity be greater than 0.088mm and the particle being less than or equal to 0.2mm be 10 ~ 50wt%, the granularity particle that is less than or equal to 0.088mm is 25 ~ 80wt%.
Above-mentioned impermeabilisation type tundish light paint, in described thionamic acid: the weight percentage that granularity is less than or equal to 0.045mm is more than or equal to 95wt%.
Above-mentioned impermeabilisation type tundish light paint, described organic plasticizers is one or more in starch, dextrin, acrylamide, sodium lignosulfonate and carboxymethyl cellulose.
Above-mentioned impermeabilisation type tundish light paint, described conjugated fibre is in paper fiber, organic fibre and alkali-free short glass fiber any two or three.
Containing paper fiber in conjugated fibre, the body that can reduce coating is close, increase coating can application property, and improve the permeability of coating.Shortcoming is the increase along with paper fiber, and the amount of water of coating uprises, and gives construction, baking and uses and bring series of problems.
Also can contain organic fibre in conjugated fibre, mainly utilize its low melting point or low softening point, get final product burn off or contraction at a lower temperature, thus gas-permeable channels is provided, when preventing coating from toasting, produce Decrepitation Phenomena.
Also can cut alkali free glass fibre containing short in conjugated fibre, Main Function and air entrapment agent coordinate, and reduce coating body further close, form netted connection simultaneously, improve strength of coating.
Above-mentioned impermeabilisation type tundish light paint, described efficient air entrapment agent is one or more in natural non-ionic type tea saponin, colophonium pyrolytic polymer, Sodium dodecylbenzene sulfonate and sodium lauryl sulphate.
A preparation method for impermeabilisation type tundish light paint, comprises the steps:
(1) raw material is prepared: the magnesia of granularity≤1mm and/or forsterite 73 ~ 99 weight part, quartz sand 0.1 ~ 15 weight part, thionamic acid 0.2 ~ 4 weight part, organic plasticizers 0.1 ~ 3.0 weight part, conjugated fibre 0.5 ~ 5 weight part, efficient air entrapment agent 0.02 ~ 0.25 weight part, metallic aluminium powder 0.01 ~ 0.15 weight part;
(2) in magnesia and/or forsterite main raw material, add conjugated fibre, in forced stirrer, strong stirring 5 ~ 10min elimination fiber is united;
(3) quartz sand, thionamic acid, organic plasticizers, efficient air entrapment agent and metallic aluminium powder mixed grind 10 ~ 15min is added again successively;
(4) manually smear after the water being directly blended into 20 ~ 30wt% of step (1) Raw total mass during site operation stirs or machine spraying, also can coordinate the inside and outside compound construction of other coating as required.
Compared with prior art, the invention has the beneficial effects as follows:
(1) thionamic acid fine powder is replaced the bonding agent as tundish light paint such as traditional silicon powder, clay, cement, water glass, poly-phosphate.This acid can be dissolved after adding water and stirring instantaneously, and reacts with magnesia powder the Mg (OH) generating and have strong cementation
2and MgSO
4:
NH
2SO
3H+H
2O+2MgO→MgSO
4+Mg(OH)
2+NH
3
Be aided with the workability that organic plasticizers etc. strengthens coating again.The setting rate of coating is fast, and maintenance and the rear compressive strength of baking reach more than 10MPa, far above general light paint.After middle high bake, organic plasticizers is by burn off, and Mg (OH)
2and MgSO
4then all be decomposed into active MgO, contribute to the middle hot strength of raising coating and do not introduce low melt-phase.
(2) quartz sand adds in coating with variable grain grating, under the average teeming temperature of Metal in Tundish (1520 ~ 1580 DEG C) condition, is formed containing SiO by original position
2high viscosity phase, react the volumetric expansion of generation 0 ~ 1.2wt% with magnesia and the CaO caught in slag generates high-melting-point equivalent way, the reaction tight zone of about 10mm is formed in coating top layer original position, to hinder the further infiltration of high-temperature slag, the coating between this layer to permanent liner then presents not sintering state completely.According to the needs that steel grade is smelted, this coating also can coordinate other coating such as heavy magnesia coating, MgO CaO coating to carry out inside and outside compound construction.Compare traditional tundish light paint, the sintering resistance of product can and disintegration performance more excellent, longer service life.
(3) compared with prior art, the body of coating of the present invention close low, the high and low fusant of intensity is few, after high-temperature slag infiltrates light paint, the reaction tight zone of about 10mm can be formed in top layer original position, to hinder the further infiltration of slag, the coating between this layer to permanent liner then presents not sintering state completely.Compare traditional tundish light paint, the sintering resistance of product can and disintegration performance more excellent, longer service life.
(4) effect of metallic aluminium powder: during construction, the temperature of tundish permanent liner is higher, generally between 110-300 DEG C, coating will produce a large amount of water vapour after arriving construction surface immediately, as do not discharged in time, the serious slump of coating will be caused, affect coating quality and construction speed.The present invention owing to adding metallic aluminium powder in coating, after working-yard adds water in coating, the water in aluminium powder and coating reacts generation gas continuously, and overflows from coating, make coating inside form a lot of micro-channel, be beneficial to water vapour and discharge; After coating arrives permanent liner surface, under heating status, the speed of response of metallic aluminium powder and water is faster, add the eliminating speed of steam, effectively prevent coating slump etc., simultaneously, metallic aluminium powder and water reaction can release heat, can accelerate drying and the hardening rate of dope layer further, accelerate construction progress.
Embodiment
The preparation method of the impermeabilisation type tundish light paint in embodiment 1-embodiment 7, comprises the steps:
(1) embodiment 1-embodiment 7 prepares raw material according to table 1;
(2) in magnesia and/or forsterite main raw material, add conjugated fibre, in forced stirrer, strong stirring 5 ~ 10min elimination fiber is united;
(3) quartz sand, thionamic acid, organic plasticizers, efficient air entrapment agent and metallic aluminium powder mixed grind 10 ~ 15min is added again successively;
(4) manually smear after the water being directly blended into the 25wt% of step (1) Raw total mass during site operation stirs or machine spraying, also can coordinate the inside and outside compound construction of other coating as required.
Each component proportion in the coating of table 1 embodiment 1 to embodiment 7
In embodiment 1:
The grain composition of described magnesia consists of: granularity is greater than 0.5mm and the particle being less than or equal to 1mm is 24.705 kilograms, granularity is greater than 0.2mm and the particle being less than or equal to 0.5mm is 21.045 kilograms, granularity is greater than 0.088mm and the particle being less than or equal to 0.2mm is 16.47 kilograms, and the particle that granularity is less than or equal to 0.088mm is 29.28 kilograms.In described magnesia, the weight percentage of MgO is 93wt%.
The grain composition of described quartz sand consists of: granularity be greater than 0.2mm and the particle being less than or equal to 0.5mm be 0.125 kilogram, granularity be greater than 0.088mm and the particle being less than or equal to 0.2mm be 0.15 kilogram, the granularity particle that is less than or equal to 0.088mm is 0.225 kilogram.
In described thionamic acid: the granular mass that granularity is less than or equal to 0.045mm is 3.264 kilograms.
In example 2:
The grain composition of described magnesia consists of: granularity is greater than 0.5mm and the particle being less than or equal to 1mm is 23.22 kilograms, granularity is greater than 0.2mm and the particle being less than or equal to 0.5mm is 19.78 kilograms, granularity is greater than 0.088mm and the particle being less than or equal to 0.2mm is 15.48 kilograms, and the particle that granularity is less than or equal to 0.088mm is 27.52 kilograms.In described magnesia, the weight percentage of MgO is 93wt%.
The grain composition of described quartz sand consists of: granularity be greater than 0.2mm and the particle being less than or equal to 0.5mm be 1.5 kilograms, granularity be greater than 0.088mm and the particle being less than or equal to 0.2mm be 1.8 kilograms, the granularity particle that is less than or equal to 0.088mm is 2.7 kilograms.
In described thionamic acid: the granular mass that granularity is less than or equal to 0.045mm is 3.264 kilograms.
In embodiment 3:
The grain composition of described magnesia consists of: granularity is greater than 0.5mm and the particle being less than or equal to 1mm is 21.6 kilograms, granularity is greater than 0.2mm and the particle being less than or equal to 0.5mm is 18.4 kilograms, granularity is greater than 0.088mm and the particle being less than or equal to 0.2mm is 14.4 kilograms, and the particle that granularity is less than or equal to 0.088mm is 25.6 kilograms.In described magnesia, the weight percentage of MgO is 93wt%.
The grain composition of described quartz sand consists of: granularity be greater than 0.2mm and the particle being less than or equal to 0.5mm be 3 kilograms, granularity be greater than 0.088mm and the particle being less than or equal to 0.2mm be 3.6 kilograms, the granularity particle that is less than or equal to 0.088mm is 5.4 kilograms.
In described thionamic acid: the particle that granularity is less than or equal to 0.045mm is 3.264 kilograms.
In example 4:
The grain composition of described magnesia consists of: granularity is greater than 0.5mm and the particle being less than or equal to 1mm is 16.2 kilograms, granularity is greater than 0.2mm and the particle being less than or equal to 0.5mm is 13.8 kilograms, granularity is greater than 0.088mm and the particle being less than or equal to 0.2mm is 10.8 kilograms, and the particle that granularity is less than or equal to 0.088mm is 19.2 kilograms.
The grain composition of described forsterite consists of: granularity is greater than 0.5mm and the particle being less than or equal to 1mm is 5.4 kilograms, granularity is greater than 0.2mm and the particle being less than or equal to 0.5mm is 4.6 kilograms, granularity is greater than 0.088mm and the particle being less than or equal to 0.2mm is 3.6 kilograms, and the particle that granularity is less than or equal to 0.088mm is 6.4 kilograms.
In described magnesia, the weight percentage of MgO is 93wt%; In described forsterite: CaO and Al
2o
3total weight percentage is 1wt%, K
2o and Na
2the total weight percentage of O is 0.1wt%, and igloss LOI is 4wt%.
The grain composition of described quartz sand consists of: granularity be greater than 0.2mm and the particle being less than or equal to 0.5mm be 3 kilograms, granularity be greater than 0.088mm and the particle being less than or equal to 0.2mm be 3.6 kilograms, the granularity particle that is less than or equal to 0.088mm is 5.4 kilograms.
In described thionamic acid: the particle that granularity is less than or equal to 0.045mm is 3.264 kilograms.
In embodiment 5:
The grain composition of described magnesia consists of: granularity is greater than 0.5mm and the particle being less than or equal to 1mm is 12.15 kilograms, granularity is greater than 0.2mm and the particle being less than or equal to 0.5mm is 10.35 kilograms, granularity is greater than 0.088mm and the particle being less than or equal to 0.2mm is 8.1 kilograms, and the particle that granularity is less than or equal to 0.088mm is 14.4 kilograms.
The grain composition of described forsterite consists of: granularity is greater than 0.5mm and the particle being less than or equal to 1mm is 9.45 kilograms, granularity is greater than 0.2mm and the particle being less than or equal to 0.5mm is 8.05 kilograms, granularity is greater than 0.088mm and the particle being less than or equal to 0.2mm is 6.3 kilograms, and the particle that granularity is less than or equal to 0.088mm is 11.2 kilograms.
In described magnesia, the weight percentage of MgO is 93wt%; In described forsterite: CaO and Al
2o
3total weight percentage is 0.5wt%, K
2o and Na
2the total weight percentage of O is 0.08wt%, and igloss LOI is 5.0wt%.
The grain composition of described quartz sand consists of: granularity be greater than 0.2mm and the particle being less than or equal to 0.5mm be 3 kilograms, granularity be greater than 0.088mm and the particle being less than or equal to 0.2mm be 3.6 kilograms, the granularity particle that is less than or equal to 0.088mm is 5.4 kilograms.
In described thionamic acid: the particle that granularity is less than or equal to 0.045mm is 3.264 kilograms.
In embodiment 6:
The grain composition of described magnesia consists of: granularity is greater than 0.5mm and the particle being less than or equal to 1mm is 8.1 kilograms, granularity is greater than 0.2mm and the particle being less than or equal to 0.5mm is 6.9 kilograms, granularity is greater than 0.088mm and the particle being less than or equal to 0.2mm is 5.4 kilograms, and the particle that granularity is less than or equal to 0.088mm is 9.6 kilograms.
The grain composition of described forsterite consists of: granularity is greater than 0.5mm and the particle being less than or equal to 1mm is 13.5 kilograms, granularity is greater than 0.2mm and the particle being less than or equal to 0.5mm is 11.5 kilograms, granularity is greater than 0.088mm and the particle being less than or equal to 0.2mm is 9 kilograms, and the particle that granularity is less than or equal to 0.088mm is 16 kilograms.
In described magnesia, the weight percentage of MgO is 93wt%; In described forsterite: CaO and Al
2o
3total weight percentage is 0.8wt%, K
2o and Na
2the total weight percentage of O is 1wt%, and igloss LOI is 4.5wt%.
The grain composition of described quartz sand consists of: granularity be greater than 0.2mm and the particle being less than or equal to 0.5mm be 3 kilograms, granularity be greater than 0.088mm and the particle being less than or equal to 0.2mm be 3.6 kilograms, the granularity particle that is less than or equal to 0.088mm is 5.4 kilograms.
In described thionamic acid: the particle that granularity is less than or equal to 0.045mm is 3.264 kilograms.
In embodiment 7:
The grain composition of described magnesia consists of: granularity is greater than 0.5mm and the particle being less than or equal to 1mm is 8.1 kilograms, granularity is greater than 0.2mm and the particle being less than or equal to 0.5mm is 6.9 kilograms, granularity is greater than 0.088mm and the particle being less than or equal to 0.2mm is 5.4 kilograms, and the particle that granularity is less than or equal to 0.088mm is 9.6 kilograms.
The grain composition of described forsterite consists of: granularity is greater than 0.5mm and the particle being less than or equal to 1mm is 13.5 kilograms, granularity is greater than 0.2mm and the particle being less than or equal to 0.5mm is 11.5 kilograms, granularity is greater than 0.088mm and the particle being less than or equal to 0.2mm is 9 kilograms, and the particle that granularity is less than or equal to 0.088mm is 16 kilograms.
In described magnesia, the weight percentage of MgO is 93wt%; In described forsterite: CaO and Al
2o
3total weight percentage is 1wt%, K
2o and Na
2the total weight percentage of O is 0.05wt%, and igloss LOI is 3wt%.
The grain composition of described quartz sand consists of: granularity be greater than 0.2mm and the particle being less than or equal to 0.5mm be 3 kilograms, granularity be greater than 0.088mm and the particle being less than or equal to 0.2mm be 3.6 kilograms, the granularity particle that is less than or equal to 0.088mm is 5.4 kilograms.
In described thionamic acid: the particle that granularity is less than or equal to 0.045mm is 3.264 kilograms.
The performance test data contrast of table 2 embodiment 1 to embodiment 7 coating
The magnesia powder of thionamic acid mainly and in coating reacts, and magnesium sulfate and the magnesium hydroxide of generation are more, and consolidation strength is higher, and setting rate is faster.Although do not add aluminium powder in embodiment 7, but in construction process, there is not slump or dope layer surface bulge projection yet, mainly because the volume density of coating has had further reduction in embodiment 7, the dope layer inside formed during construction is very loose, successfully can discharge water vapour, also can smooth construction even if do not add aluminium powder; All add aluminium powder in embodiment 1-6, slump or dope layer surface bulge projection do not occur in construction process.In a word, the coating in above-described embodiment 1-6, not only volume density is little, and the phenomenon of slump or dope layer surface bulge projection can not occur in process of setting of being heated, and after baking, compressive strength is high, and work-ing life is very long, and impervious effective.
In the comparative example 11 of embodiment 1, in the comparative example 21 of embodiment 2, in the comparative example 31 of embodiment 3, in the comparative example 41 of embodiment 4, in the comparative example 51 of embodiment 5 and in the comparative example 61 of embodiment 6, do not add aluminium powder and other component proportion is identical with embodiment 1-6 respectively, when construction, use the dope layer of embodiment 11-embodiment 61 coating that slump and the protruding phenomenon of dope layer surface bulge all can occur.
And, along with the temperature of dope layer raises, use the dope layer slump phenomenon of embodiment 11-embodiment 61 coating and the protruding phenomenon of dope layer surface bulge to weaken successively; This is because: because embodiment 11-embodiment 61 does not all add metallic aluminium powder, along with in embodiment 11-embodiment 61, coatings volume density reduces successively, coating inside is more and more loose, be heated in process of setting at dope layer, moisture in dope layer is discharged also relatively more and more easier, and this can cause the dope layer phenomenon that slump or dope layer surface bulge projection occur in process of setting of being heated to weaken.
By the coating in embodiment 3 and heavy magnesia coating well known in the prior art, (typical heavy magnesia coating is made up of following component: magnesia 90 weight part, silicon powder 6 weight part, tripoly phosphate sodium STPP 1.0 weight part, clay 2.2 weight part and paper fiber 0.8 weight part; Volume density is 2.35g/cm
3) inside and outside compound construction.Concrete grammar: the coating in embodiment 3 adds coating total mass 23wt% water when constructing stirs, heavy magnesia coating adds coating total mass 16wt% water when constructing stirs, and then manually smears under 110 ~ 200 DEG C of environment.Total coating thickness 60mm, point three times constructions, often all over smearing thickness 20mm.First pass and the light paint all smeared in embodiment 3 for second time; Be for 3rd time that outermost layer smears heavy magnesia coating.Cast steel grade is HRB400.Residual lining analyzes display, and high-temperature slag infiltrates into heavy magnesia coating layer completely, but the reaction tight zone of the formation 9mm that is captured at lightweight coating place, remainder is still unsintered protoplasm layer.
Above-described embodiment is only for the invention example is clearly described, and the restriction not to the invention embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.All within the spirit and principles in the present invention any apparent change of extending out or variation be still among the protection domain of the invention claim.
Claims (10)
1. an impermeabilisation type tundish light paint, it is characterized in that, be made up of the component of following weight part: the magnesia of granularity≤1mm and/or forsterite 73 ~ 99 weight part, quartz sand 0.1 ~ 15 weight part, thionamic acid 0.2 ~ 4 weight part, organic plasticizers 0.1 ~ 3.0 weight part, conjugated fibre 0.5 ~ 5 weight part, efficient air entrapment agent 0.02 ~ 0.25 weight part, metallic aluminium powder 0.01 ~ 0.15 weight part.
2. a kind of impermeabilisation type tundish light paint according to claim 1, it is characterized in that: the grain composition of described magnesia and/or forsterite consists of: granularity is greater than 0.5mm and the particle being less than or equal to 1mm is 15 ~ 30wt%, granularity is greater than 0.2mm and the particle being less than or equal to 0.5mm is 10 ~ 25wt%, granularity is greater than 0.088mm and the particle being less than or equal to 0.2mm is 10 ~ 25wt%, and the particle that granularity is less than or equal to 0.088mm is 20 ~ 35wt%.
3. a kind of impermeabilisation type tundish light paint according to claim 1, is characterized in that: in described magnesia, the weight percentage of MgO is more than or equal to 91wt%; In described forsterite: CaO and Al
2o
3total weight percentage is less than or equal to 1wt%, K
2o and Na
2the total weight percentage of O is less than or equal to 0.1wt%, and igloss LOI is less than or equal to 5.0wt%.
4. a kind of impermeabilisation type tundish light paint according to claim 1, is characterized in that: described quartz sand is one or more in common quartz, refining quartz and fused quartz.
5. a kind of impermeabilisation type tundish light paint according to claim 1, is characterized in that: the grain composition of described quartz sand consists of: granularity be greater than 0.2mm and the particle being less than or equal to 0.5mm be 10 ~ 50wt%, granularity be greater than 0.088mm and the particle being less than or equal to 0.2mm be 10 ~ 50wt%, the granularity particle that is less than or equal to 0.088mm is 25 ~ 80wt%.
6. a kind of impermeabilisation type tundish light paint according to claim 1, is characterized in that: in described thionamic acid: the weight percentage that granularity is less than or equal to 0.045mm is more than or equal to 95wt%.
7. a kind of impermeabilisation type tundish light paint according to claim 1, is characterized in that: described organic plasticizers is one or more in starch, dextrin, acrylamide, sodium lignosulfonate and carboxymethyl cellulose.
8. a kind of impermeabilisation type tundish light paint according to claim 1, is characterized in that: described conjugated fibre is in paper fiber, organic fibre and alkali-free short glass fiber any two or three.
9. a kind of impermeabilisation type tundish light paint according to claim 1, is characterized in that: described efficient air entrapment agent is one or more in natural non-ionic type tea saponin, colophonium pyrolytic polymer, Sodium dodecylbenzene sulfonate and sodium lauryl sulphate.
10. a preparation method for impermeabilisation type tundish light paint, is characterized in that, comprise the steps:
(1) raw material is prepared: the magnesia of granularity≤1mm and/or forsterite 73 ~ 99 weight part, quartz sand 0.1 ~ 15 weight part, thionamic acid 0.2 ~ 4 weight part, organic plasticizers 0.1 ~ 3.0 weight part, conjugated fibre 0.5 ~ 5 weight part, efficient air entrapment agent 0.02 ~ 0.25 weight part, metallic aluminium powder 0.01 ~ 0.15 weight part;
(2) in magnesia and/or forsterite main raw material, add conjugated fibre, in forced stirrer, strong stirring 5 ~ 10min elimination fiber is united;
(3) quartz sand, thionamic acid, organic plasticizers, efficient air entrapment agent and metallic aluminium powder mixed grind 10 ~ 15min is added again successively;
(4) manually smear after the water being directly blended into 20 ~ 30wt% of step (1) Raw total mass during site operation stirs or machine spraying, also can coordinate the inside and outside compound construction of other coating as required.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106518112A (en) * | 2016-11-06 | 2017-03-22 | 金少平 | Low-cost continuous casting tundish coating and preparation method thereof |
| CN107382331A (en) * | 2017-06-28 | 2017-11-24 | 常州莱尚纺织品有限公司 | A kind of anti-slag type tundish paint |
| CN108002849A (en) * | 2016-10-28 | 2018-05-08 | 河南智联寰宇知识产权运营有限公司 | Refractory brick containing magnesia and preparation method thereof |
| CN108002850A (en) * | 2016-10-28 | 2018-05-08 | 河南智联寰宇知识产权运营有限公司 | Refractory brick containing spodumene and preparation method thereof |
| CN108017399A (en) * | 2016-10-28 | 2018-05-11 | 河南智联寰宇知识产权运营有限公司 | Refractory brick containing calcium hexaluminate and preparation method thereof |
| CN111484343A (en) * | 2020-04-15 | 2020-08-04 | 北京利尔高温材料股份有限公司 | Hydration-resistant magnesium-calcium tundish coating and preparation method thereof |
| CN117585987A (en) * | 2024-01-18 | 2024-02-23 | 河北国亮新材料股份有限公司 | Tundish coating material and preparation method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108002849A (en) * | 2016-10-28 | 2018-05-08 | 河南智联寰宇知识产权运营有限公司 | Refractory brick containing magnesia and preparation method thereof |
| CN108002850A (en) * | 2016-10-28 | 2018-05-08 | 河南智联寰宇知识产权运营有限公司 | Refractory brick containing spodumene and preparation method thereof |
| CN108017399A (en) * | 2016-10-28 | 2018-05-11 | 河南智联寰宇知识产权运营有限公司 | Refractory brick containing calcium hexaluminate and preparation method thereof |
| CN106518112A (en) * | 2016-11-06 | 2017-03-22 | 金少平 | Low-cost continuous casting tundish coating and preparation method thereof |
| CN107382331A (en) * | 2017-06-28 | 2017-11-24 | 常州莱尚纺织品有限公司 | A kind of anti-slag type tundish paint |
| CN111484343A (en) * | 2020-04-15 | 2020-08-04 | 北京利尔高温材料股份有限公司 | Hydration-resistant magnesium-calcium tundish coating and preparation method thereof |
| CN117585987A (en) * | 2024-01-18 | 2024-02-23 | 河北国亮新材料股份有限公司 | Tundish coating material and preparation method thereof |
| CN117585987B (en) * | 2024-01-18 | 2024-03-19 | 河北国亮新材料股份有限公司 | Tundish coating material and preparation method thereof |
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