CN104311045A - Resin-combined tundish light coating and preparation method thereof - Google Patents
Resin-combined tundish light coating and preparation method thereof Download PDFInfo
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- CN104311045A CN104311045A CN201410512572.8A CN201410512572A CN104311045A CN 104311045 A CN104311045 A CN 104311045A CN 201410512572 A CN201410512572 A CN 201410512572A CN 104311045 A CN104311045 A CN 104311045A
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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 a resin-combined tundish light coating and a preparation method thereof. The tundish light coating is composed of the following components in parts by weight: 85-95 parts of magnesia and/or forsterite with the particle size being larger than 0mm and less than or equal to 0.5mm, 0.3-6.0 parts of resin powder, 0.01-2.5 parts of organic acid, 0.1-3 parts of hollow organic fiber, 0.5-3 parts of paper fiber, 0.1-0.3 parts of magnesian sintering aid and 0.01-0.2 part of sodium salt dispersant. The preparation method comprises steps of preparing raw materials, mixing and stirring the raw materials in sequence, adding water and stirring. The tundish light coating is small in volume density, high in strength, good in liquidity, high in hardening rate, uniform in coating structure and the like.
Description
Technical field
The present invention relates to unshape refractory technical field, particularly a kind of tundish light paint and preparation method thereof of resin-bonded.
Background technology
Tundish paint mainly with magnesia and/or forsterite for raw material, be disposable product, Year's consumption is very large.Along with the active demand of exhaustion and the national energy-saving Environmental Protection Strategy day by day of the fire-resistant resources such as magnesia, tundish paint has gradually from heavy (1.8 ~ 2.4g/cm
3) to lightweight (1.2 ~ 1.8/cm
3) trend of future development, its porosity is high, pore size large, and heat insulation effect is excellent.But, light paint in the market generally makes bonding agent or stiffening agent with one or more in silicon powder, clay, cement, water glass, poly-phosphate etc., in order to increase adhesivity, the plasticity-and intensity etc. of coating, addition is generally even higher 2 ~ 6%.This type of coating at high temperature interacts with infiltration slag and produces a large amount of liquid phase, and cause refractoriness significantly to reduce on the one hand, resistance to fouling is deteriorated; Sintering is serious on the other hand, bonds and causes turning over difficulty of wrapping or disintegrate, add the labour intensity of workman with permanent liner.
In addition, in lighting, traditional tundish paint extensively adopts sulfonated lignin, alkylsulfonate or vitriol etc. as air entrapment agent, its advantage is that significantly to reduce the body of coating close, have good water-reducing effect, but also there is the problem of following several aspect: (1) coating is comparatively large by churning time, amount of water, the impact of shelf-time, number of bubbles and size are difficult to control, cause the close poor stability of body, coating structure is uneven; (2) a large amount of micro bubbles improves dope viscosity, adds material adhesion resistance in the duct, and the most conventional domestic piston pump spraying machine cannot be used to carry out construction operation; (3) sulfonated lignin, alkylsulfonate or vitriol etc. have stronger delayed coagulation while bleed, and coating application post-hardening is slow, easily slump, directly affects construction speed.
Summary of the invention
For the deficiencies in the prior art, the object of the present invention is to provide that a kind of eutectic content is few, volume density is little, intensity is high, refractoriness is high, the tundish light paint of resin-bonded that resistance to fouling and sintering resistance can be good and preparation method thereof, tundish light paint of the present invention not only body close stable, coating structure is even, construction post-hardening speed is fast, intensity is high, not easily slump, and can carry out construction operation with the most conventional domestic piston pump spraying machine.
Technical scheme of the present invention is achieved in that a kind of tundish light paint of resin-bonded, is made up of the component of following weight part: the granularity of 85 ~ 95 weight parts is greater than 0mm and is less than or equal to magnesia and/or forsterite, 0.3 ~ 6.0 parts by weight resin powder, 0.01 ~ 2.5 weight part organic acid, 0.1 ~ 3 weight part hollow organic fibre, 0.5 ~ 3 weight part paper fiber, the magnesia sintering agent of 0.1 ~ 0.3 weight part and 0.01 ~ 0.2 weight part sodium salt dispersion agent of 0.5mm.
The tundish light paint of above-mentioned resin-bonded, described magnesia and/or forsterite be greater than 0.2mm by the granularity of 25 ~ 35 weight parts and be less than or equal to the magnesia of 0.5mm and/or forsterite, the granularity of 30 ~ 50 weight parts is greater than 0.088mm and the granularity of the magnesia and/or forsterite and 25 ~ 40 weight parts that are less than or equal to 0.2mm is greater than 0mm and is less than or equal to the magnesia of 0.088mm and/or forsterite forms.
The tundish light paint of above-mentioned resin-bonded, the mass ratio of described organic acid and described resin-oatmeal is 1:3 ~ 3:1.
The tundish light paint of above-mentioned resin-bonded, in described resin-oatmeal, granularity is greater than 0mm and the mass percent that the resin-oatmeal being less than or equal to 0.045mm accounts for described resin-oatmeal total mass is more than or equal to 85%.
The tundish light paint of above-mentioned resin-bonded, described organic acid be in citric acid, oxysuccinic acid, tartrate and oxalic acid one or both and two or more; Described resin-oatmeal be in resol, epoxy resin, Precondensed UreaFormaldehyde Resin, melmac, Modified Water Soluble Phenolic Resin, modified soluble epoxy resin, modified soluble Precondensed UreaFormaldehyde Resin and modified soluble melmac one or both and two or more; Described magnesia sintering agent be in light burned magnesite powder, attaclay, magnesium chloride hexahydrate and magnesium sulfate heptahydrate one or both and two or more; Described sodium salt dispersion agent be in Sodium hexametaphosphate 99, tripoly phosphate sodium STPP, sodium tetrapolyphosphate, five sodium polyphosphates, hexapolyphosphate sodium, Trisodium Citrate, sodium carbonate, sodium tartrate and trisodium phosphate one or both and two or more.
The tundish light paint of above-mentioned resin-bonded, described hollow organic fibre is hollow polyethylene fibre or hollow polypropylene fibres, and the diameter of described hollow organic fibre is 10 ~ 25 μm, and the length of described hollow organic fibre is greater than 0mm and is less than or equal to 8 ㎜.
The preparation method of the tundish light paint of resin-bonded, concrete steps are as follows:
(1) be greater than 0mm according to the tundish light paint of resin-bonded by the granularity of 85 ~ 95 weight parts and be less than or equal to the magnesia of 0.5mm and/or forsterite, 0.3 ~ 6.0 parts by weight resin powder, 0.01 ~ 2.5 weight part organic acid, 0.1 ~ 3 weight part hollow organic fibre, 0.5 ~ 3 weight part paper fiber, the magnesia sintering agent of 0.1 ~ 0.3 weight part and 0.01 ~ 0.2 weight part sodium salt dispersion agent form, preparing raw material;
(2) ready magnesia in step (1) and/or forsterite are loaded in whipping appts;
(3) in the magnesia in the whipping appts in step (2) and/or forsterite, add paper fiber and hollow organic fibre successively and stir, the rotating speed of stirrer is 35r/min, and churning time is 5 ~ 10min, eliminates fibrous mass;
(4) in the mixture through step (3) process gained, add described resin-oatmeal, organic acid, magnesia sintering agent and sodium salt dispersion agent, after continuing stirring 10 ~ 15min, discharging is packed;
(5) during site operation, directly to the stirring that adds water in the mixture of step (4) process gained, the quality added water is 20 ~ 30% of the quality of the middle gained mixture of step (4) used in construction, manually smears or machine spraying after stirring.
A tundish light paint for resin-bonded, is made up of the component of following weight part: the granularity of 85 ~ 95 weight parts is greater than 0mm and is less than or equal to the magnesia of 0.5mm and/or forsterite, 0.3 ~ 6.0 parts by weight resin powder, 0.01 ~ 2.5 weight part organic acid, 0.1 ~ 3 weight part hollow organic fibre, 0.5 ~ 3 weight part paper fiber, the magnesia sintering agent of 0.1 ~ 0.3 weight part and 0.01 ~ 0.2 weight part sodium salt dispersion agent, 0.5 ~ 2 weight part composite anti-penetrating agent.
The tundish light paint of above-mentioned resin-bonded, composite anti-penetrating agent is made up of nano strontium carbonate, nanometer Strontium Sulphate and nano barium sulfate, the mass ratio of nano strontium carbonate, nanometer Strontium Sulphate and nano barium sulfate is 2:4:1, and the granularity of nano strontium carbonate, nanometer Strontium Sulphate and nano barium sulfate is 1 ~ 5nm.
The preparation method of the tundish light paint of resin-bonded, concrete steps are as follows:
(1) be greater than 0mm according to the tundish light paint of resin-bonded by the granularity of 85 ~ 95 weight parts and be less than or equal to the magnesia of 0.5mm and/or forsterite, 0.3 ~ 6.0 parts by weight resin powder, 0.01 ~ 2.5 weight part organic acid, 0.1 ~ 3 weight part hollow organic fibre, 0.5 ~ 3 weight part paper fiber, the magnesia sintering agent of 0.1 ~ 0.3 weight part, 0.01 ~ 0.2 weight part sodium salt dispersion agent and 0.5 ~ 2 weight part composite anti-penetrating agent form, preparing raw material;
(2) ready magnesia in step (1) and/or forsterite are loaded in whipping appts;
(3) in the magnesia in the whipping appts in step (2) and/or forsterite, add paper fiber and hollow organic fibre successively and stir, the rotating speed of stirrer is 35r/min, and churning time is 5 ~ 10min, eliminates fibrous mass;
(4) in the mixture through step (3) process gained, add described resin-oatmeal, organic acid, magnesia sintering agent and sodium salt dispersion agent, after continuing stirring 10 ~ 15min, discharging is packed;
(5) during site operation, directly to the stirring that adds water in the mixture of step (4) process gained, the quality added water is 20 ~ 30% of the quality of the middle gained mixture of step (4) used in construction, and then add composite anti-penetrating agent, manually smear after stirring or machine spraying.
The invention has the beneficial effects as follows:
1. resin-oatmeal or its water soluble resin are used for tundish light paint, only add a small amount of magnesia sintering agent, namely can be coating and sufficiently high low temperature, middle temperature and hot strength are provided, decrease the generation of liquid phase under product high temperature; The carbon net be simultaneously decomposed to form under resin high temperature to slag and molten steel nonwetting.Thus, compared with the light paint combined with general silicon powder, clay, cement, water glass or poly-phosphate, the resistance to fouling of product and sintering resistance can more excellent, longer service life.
2. composite between the void content that product is high and the close hollow organic fibre mainly coming from the less critical granularity of system, reasonably grain composition, the resin-oatmeal of high dispersive, high dispersive of low body, and not by churning time and the restriction of shelf-time.Compared with existing traditional bleed formulation light paint, the close stability of product body is better, coating structure is more even, better heat preservation.
3. organic acid and resin-oatmeal are composite in proportion, can ensure that product has high mobility, plasticity-and enough setting times, no matter meet coating stirring at normal temperatures, pumping and deposit needs, be spiral pump or piston pump spraying machine, all can operation smoothly; When temperature is more than 60 DEG C, organic acid, then as the stiffening agent of resin-oatmeal, can ensure that the coating being sprayed into permanent liner surface hardens and not slump at short notice, thus accelerating construction progress.
4. in product, with the addition of that low melting point, low body are close, the hollow organic fibre of polymolecularity, in bake process, water vapour except can from the fiber melting or shrink gap discharge except, directly therefrom can also have in vain in the axial hollow pipeline of organic fiber and ooze out, compare and only add traditional paper fiber or glass fibre, the permeability of the coating adopting light paint of the present invention to smear is better, and anti-spalling is more excellent.
5. Strontium carbonate powder, Strontium Sulphate, calcium sulfate are heavy material, and itself is fine and close, has and stops osmosis preferably, and the material of employing nano level degree can make again the doubtful gap between its abundant light filling material, makes material body fine and close and antiseepage; And the compound action of nano strontium carbonate, nanometer Strontium Sulphate, nanometer calcium sulfate, permeability-thickness can be controlled preferably and realize lower cost, but also the compressive strength of coating can be improved.In addition Strontium carbonate powder, Strontium Sulphate still de-S, the de-P agent preferably when high temperature, plays clean acting on to molten steel.After adopting composite anti-penetrating agent, in the experiment of crucible method anti-erosion, and not with compared with composite anti-penetrating, permeation layer thickness reduces about 30%.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail.
In the examples below, degree of mobilization testing method in prior art is adopted to measure the mobility of the tundish light paint of resin-bonded of the present invention: truncated cone-shaped mould bottom surface diameter is 100 millimeters, upper bottom surface diameter is 70 millimeters, height is 50 millimeters, mould is placed on shaking table, vertically mould is removed after putting coating, vibrate 20 seconds (vibrational flow), test material cake diameter is as yield point value index (unit mm).Measure once every 120 degree, getting the mean value measured for three times is the final testing result of vibration flowability.The test of compressive strength adopts the national standard of refractory product technical field to test the compressive strength of the tundish light paint of resin-bonded of the present invention.
Embodiment 1
A tundish light paint for resin-bonded, is made up of the component of following weight part: the magnesia of 85 kilograms, 6.0 kilogram resin powder, 2.5 kilograms of organic acids, 3 kilograms of hollow organic fibres, 3 kilograms of paper fibers, 0.3 kilogram of magnesia sintering agent and 0.2 kilogram of sodium salt dispersion agent.
Described magnesia be greater than 0.2mm by the granularity of 25 kilograms and be less than or equal to the magnesia of 0.3mm, the granularity of 35 kilograms is greater than 0.088mm and is less than or equal to the magnesia of 0.1mm and the granularity of 25 kilograms and be greater than 0mm and the magnesia being less than or equal to 0.078mm forms.
In described resin-oatmeal, granularity is greater than 0mm and the mass percent that the resin-oatmeal being less than or equal to 0.03mm accounts for described resin-oatmeal total mass equals 85%.The diameter of described hollow organic fibre is 10 ~ 25 μm, and the length of described hollow organic fibre is greater than 0mm and is less than or equal to 8 ㎜.
Described hollow organic fibre is hollow polyethylene fibre; Described organic acid is citric acid; Described resin-oatmeal is resol; Described magnesia sintering agent is magnesium chloride hexahydrate; Described sodium salt dispersion agent is tripoly phosphate sodium STPP.
The tundish light paint preparation method of the present embodiment resin-bonded comprises the steps:
(1) according to the said ratio of each component in the tundish light paint of resin-bonded, raw material is prepared;
(2) magnesia ready in step (1) is loaded in whipping appts;
(3) in the magnesia in the whipping appts in step (2), add paper fiber and hollow organic fibre successively and stir, the rotating speed of stirrer is 35r/min, and churning time is 5 ~ 10min, eliminates fibrous mass;
(4) in the mixture through step (3) process gained, add described resin-oatmeal, organic acid, magnesia sintering agent and sodium salt dispersion agent, after continuing stirring 10 ~ 15min, discharging is packed;
(5) during site operation, directly to the stirring that adds water in the mixture of step (4) process gained, the quality added water is 25% of the quality of the middle gained mixture of step (4) used in construction, manually smears or machine spraying after stirring.
The viscosity of the present embodiment coating is good, sclerosis is fast, plasticity-is strong, without slump phenomenon, volume density is 1.6g/cm
3, the compressive strength after 110 DEG C × 16h toasts is 15Mpa, and vibration flowability is 280 millimeters.This coating is constructed under 70 ± 5 DEG C of environment, total thickness 120mm, and point three times constructions, often can harden all over construction for latter 30 minutes; Experiment proves, this coating mean life is 85 stoves, on average connects and waters time 85h.
Embodiment 2
A tundish light paint for resin-bonded, is made up of the component of following weight part: the magnesia of 85 kilograms, 6.0 kilogram resin powder, 2.5 kilograms of organic acids, 3 kilograms of hollow organic fibres, 3 kilograms of paper fibers, 0.3 kilogram of magnesia sintering agent and 0.2 kilogram of sodium salt dispersion agent.
Described magnesia is greater than 0.2mm by the granularity of 10 kilograms and is less than or equal to the magnesia of 0.3mm, the granularity of 15 kilograms is more than or equal to 0.35mm and is less than or equal to the magnesia of 0.5mm, the granularity of 5 kilograms is greater than 0.088mm and is less than or equal to the magnesia of 0.1mm, the granularity of 30 kilograms is more than or equal to 0.13mm and is less than or equal to the magnesia of 0.2mm, the granularity of 14 kilograms is greater than 0mm and is less than or equal to the magnesia of 0.04mm and the granularity of 11 kilograms and is more than or equal to 0.05mm and the magnesia composition being less than or equal to 0.088mm.
In described resin-oatmeal, granularity is greater than 0mm and the mass percent that the resin-oatmeal being less than or equal to 0.02mm accounts for described resin-oatmeal total mass equals 30%, granularity is more than or equal to 0.025mm and the mass percent that the resin-oatmeal being less than or equal to 0.045mm accounts for described resin-oatmeal total mass equals 65%.The diameter of described hollow organic fibre is 10 ~ 20 μm, and the length of described hollow organic fibre is greater than 3mm and is less than or equal to 8 ㎜.
Described hollow organic fibre is hollow polyethylene fibre; Described organic acid is citric acid; Described resin-oatmeal is resol; Described magnesia sintering agent is magnesium chloride hexahydrate; Described sodium salt dispersion agent is tripoly phosphate sodium STPP.
The preparation method of the tundish light paint of the present embodiment resin-bonded is identical with embodiment 1.The viscosity of the present embodiment coating is good, sclerosis fast, plasticity-is strong, without slump phenomenon, volume density 1.5g/cm
3, the compressive strength after 110 DEG C × 16h toasts is 20Mpa, and vibration flowability is 285 millimeters.This coating is constructed under 70 ± 5 DEG C of environment, total thickness 120mm, and point three times constructions, often can harden all over construction for latter 30 minutes; Experiment proves, this coating mean life is 96 stoves, on average connects and waters time 96h.
Embodiment 3
A tundish light paint for resin-bonded, is made up of the component of following weight part: the magnesia of 85 kilograms, 6.0 kilogram resin powder, 2.5 kilograms of organic acids, 3 kilograms of hollow organic fibres, 3 kilograms of paper fibers, 0.3 kilogram of magnesia sintering agent and 0.2 kilogram of sodium salt dispersion agent.
Described magnesia be greater than 0.2mm by the granularity of 25 kilograms and be less than or equal to the magnesia of 0.3mm, the granularity of 35 kilograms is greater than 0.088mm and is less than or equal to the magnesia of 0.1mm and the granularity of 25 kilograms and be greater than 0mm and the magnesia being less than or equal to 0.078mm forms.
In described resin-oatmeal, granularity is greater than 0mm and the mass percent that the resin-oatmeal being less than or equal to 0.03mm accounts for described resin-oatmeal total mass equals 85%.The diameter of described hollow organic fibre is 10 ~ 25 μm, and the length of described hollow organic fibre is greater than 0mm and is less than or equal to 8 ㎜.
Described hollow organic fibre is hollow polyethylene fibre; Described organic acid is oxysuccinic acid and tartaric mixture, and oxysuccinic acid and tartaric mass ratio are 1:1.5; Described resin-oatmeal is the mixture of Precondensed UreaFormaldehyde Resin, melmac, modified soluble Precondensed UreaFormaldehyde Resin and modified soluble melmac, and the mass ratio of Precondensed UreaFormaldehyde Resin, melmac, modified soluble Precondensed UreaFormaldehyde Resin and modified soluble melmac is 1:1.5:0.5:3; Described magnesia sintering agent is magnesium chloride hexahydrate; Described sodium salt dispersion agent is tripoly phosphate sodium STPP.
The preparation method of the tundish light paint of the present embodiment resin-bonded is identical with embodiment 1.The viscosity of the present embodiment coating is good, sclerosis fast, plasticity-is strong, without slump phenomenon, volume density 1.6g/cm
3, the compressive strength after 110 DEG C × 16h toasts is 15Mpa, and vibration flowability is 303 millimeters.This coating is constructed under 70 ± 5 DEG C of environment, total thickness 120mm, and point three times constructions, often can harden all over construction for latter 25 minutes; Experiment proves, this coating work-ing life is 86 stoves, connects and waters time 86h.
Embodiment 4
A tundish light paint for resin-bonded, is made up of the component of following weight part: the magnesia of 85 kilograms, 6.0 kilogram resin powder, 2.5 kilograms of organic acids, 3 kilograms of hollow organic fibres, 3 kilograms of paper fibers, 0.3 kilogram of magnesia sintering agent and 0.2 kilogram of sodium salt dispersion agent.
Described magnesia is greater than 0.2mm by the granularity of 10 kilograms and is less than or equal to the magnesia of 0.3mm, the granularity of 15 kilograms is more than or equal to 0.35mm and is less than or equal to the magnesia of 0.5mm, the granularity of 5 kilograms is greater than 0.088mm and is less than or equal to the magnesia of 0.1mm, the granularity of 30 kilograms is more than or equal to 0.13mm and is less than or equal to the magnesia of 0.2mm, the granularity of 14 kilograms is greater than 0mm and is less than or equal to the magnesia of 0.04mm and the granularity of 11 kilograms and is more than or equal to 0.05mm and the magnesia composition being less than or equal to 0.088mm.
In described resin-oatmeal, granularity is greater than 0mm and the mass percent that the resin-oatmeal being less than or equal to 0.02mm accounts for described resin-oatmeal total mass equals 30%, granularity is more than or equal to 0.025mm and the mass percent that the resin-oatmeal being less than or equal to 0.045mm accounts for described resin-oatmeal total mass equals 65%.The diameter of described hollow organic fibre is 10 ~ 20 μm, and the length of described hollow organic fibre is greater than 3mm and is less than or equal to 8 ㎜.
Described hollow organic fibre is hollow polyethylene fibre; Described organic acid is the mixture of citric acid and oxalic acid, and the mass ratio of citric acid and oxalic acid is 1:1; Described resin-oatmeal is the mixture of resol, epoxy resin, Modified Water Soluble Phenolic Resin and modified soluble epoxy resin, and the mass ratio of resol, epoxy resin, Modified Water Soluble Phenolic Resin and modified soluble epoxy resin is 1:1:1.5:2.5; Described magnesia sintering agent is magnesium chloride hexahydrate; Described sodium salt dispersion agent is tripoly phosphate sodium STPP.
The preparation method of the tundish light paint of the present embodiment resin-bonded is identical with embodiment 1.The viscosity of the present embodiment coating is good, sclerosis fast, plasticity-is strong, without slump phenomenon, volume density 1.5g/cm
3, the compressive strength after 110 DEG C × 16h toasts is 20.4Mpa, and vibration flowability is 320 millimeters.This coating of the coating of the present embodiment is constructed under 70 ± 5 DEG C of environment, total thickness 120mm, and point three times constructions, often can harden all over construction for latter 20 minutes; Experiment proves, this coating work-ing life is 96 stoves, connects and waters time 96h.
Embodiment 5
A tundish light paint for resin-bonded, is made up of the component of following weight part: the granularity of 90.8 kilograms is greater than 0mm and is less than or equal to the magnesia of 0.5mm and forsterite, 2.3 kilogram resin powder, 2.21 kilograms of organic acids, 2.29 kilograms of hollow organic fibres, 2.29 kilograms of paper fibers, 0.1 kilogram of magnesia sintering agent and 0.01 kilogram of sodium salt dispersion agent.Wherein, magnesia is 40 kilograms, and forsterite is 50.8 kilograms.
Described organic acid is oxalic acid; Described resin-oatmeal is epoxy resin; Described magnesia sintering agent is magnesium sulfate heptahydrate; Described sodium salt dispersion agent is trisodium phosphate.
Wherein the granularity of 30 kilograms of described magnesia is greater than 0.2mm and is less than or equal to 0.5mm; The granularity of 40 kilograms of described forsterites is greater than 0.088mm and is less than or equal to 0.2mm; The granularity of 10 kilograms of magnesia and 10.8 kilograms of forsterites is greater than 0mm and is less than or equal to 0.088mm.
In described resin-oatmeal, granularity is greater than 0mm and the mass percent that the resin-oatmeal being less than or equal to 0.045mm accounts for described resin-oatmeal total mass is more than or equal to 85%.
Described hollow organic fibre is hollow polyethylene fibre or hollow polypropylene fibres, and the diameter of described hollow organic fibre is 10 ~ 25 μm, and the length of described hollow organic fibre is greater than 0mm and is less than or equal to 8 ㎜.
The tundish light paint preparation method of the present embodiment resin-bonded comprises the steps:
(1) according to the said ratio of each component in the tundish light paint of resin-bonded, raw material is prepared;
(2) ready magnesia in step (1) and forsterite are loaded in whipping appts;
(3) in the magnesia in the whipping appts in step (2), add paper fiber and hollow organic fibre successively and stir, the rotating speed of stirrer is 35r/min, and churning time is 5 ~ 10min, eliminates fibrous mass;
(4) in the mixture through step (3) process gained, add described resin-oatmeal, organic acid, magnesia sintering agent and sodium salt dispersion agent, after continuing stirring 10 ~ 15min, discharging is packed;
(5) during site operation, directly to the stirring that adds water in the mixture of step (4) process gained, the quality added water is 20% of the quality of the middle gained mixture of step (4) used in construction, manually smears or machine spraying after stirring.
The viscosity of the present embodiment coating is good, sclerosis is fast, plasticity-is strong, without slump phenomenon, volume density is 1.6g/cm
3, the compressive strength after 110 DEG C × 16h toasts is 14Mpa, and vibration flowability is 270 millimeters.This coating of the coating of the present embodiment is constructed under 70 ± 5 DEG C of environment, total thickness 120mm, and point three times constructions, often can harden all over construction for latter 35 minutes; Experiment proves, this coating mean life is 82 stoves, on average connects and waters time 82h.
Embodiment 6
A tundish light paint for resin-bonded, is made up of the component of following weight part: the granularity of 90.8 kilograms is greater than 0mm and is less than or equal to the magnesia of 0.5mm and forsterite, 2.3 kilogram resin powder, 2.21 kilograms of organic acids, 2.29 kilograms of hollow organic fibres, 2.29 kilograms of paper fibers, 0.1 kilogram of magnesia sintering agent and 0.01 kilogram of sodium salt dispersion agent.Wherein, magnesia is 40 kilograms, and forsterite is 50.8 kilograms.
Described organic acid is oxalic acid; Described resin-oatmeal is epoxy resin; Described magnesia sintering agent is magnesium sulfate heptahydrate; Described sodium salt dispersion agent is trisodium phosphate.
Wherein the granularity of 10 kilograms of described magnesia is greater than 0.2mm and is less than or equal to 0.3mm, and the granularity of 20 kilograms of described magnesia is more than or equal to 0.4mm and is less than or equal to 0.5mm; The granularity of 40 kilograms of described forsterites is greater than 0.088mm and is less than or equal to 0.2mm; The granularity of 10 kilograms of magnesia and 10.8 kilograms of forsterites is greater than 0mm and is less than or equal to 0.07mm.
In described resin-oatmeal, granularity is greater than 0mm and the mass percent that the resin-oatmeal being less than or equal to 0.03mm accounts for described resin-oatmeal total mass is 40%, and granularity is greater than 0.03mm and the mass percent that the resin-oatmeal being less than or equal to 0.045mm accounts for described resin-oatmeal total mass is 50%.
Described hollow organic fibre is hollow polyethylene fibre or hollow polypropylene fibres, and the diameter of described hollow organic fibre is 10 ~ 25 μm, and the length of described hollow organic fibre is greater than 5mm and is less than or equal to 8 ㎜.
The preparation method of the tundish light paint of the present embodiment resin-bonded is identical with embodiment 5.The viscosity of the present embodiment coating is good, sclerosis is fast, plasticity-is strong, without slump phenomenon, volume density is 1.53g/cm
3, the compressive strength after 110 DEG C × 16h toasts is 18Mpa, and vibration flowability is 271 millimeters.This coating of the coating of the present embodiment is constructed under 70 ± 5 DEG C of environment, total thickness 120mm, and point three times constructions, often can harden all over construction for latter 35 minutes; Experiment proves, this coating mean life is 84 stoves, on average connects and waters time 84h.
Embodiment 7
A tundish light paint for resin-bonded, is made up of the component of following weight part: the magnesia of 85 kilograms, 6.0 kilogram resin powder, 2.5 kilograms of organic acids, 3 kilograms of hollow organic fibres, 3 kilograms of paper fibers, 0.3 kilogram of magnesia sintering agent, 0.2 kilogram of sodium salt dispersion agent and 1.75 kilograms of composite anti-penetrating agent.
Described magnesia be greater than 0.2mm by the granularity of 25 kilograms and be less than or equal to the magnesia of 0.3mm, the granularity of 35 kilograms is greater than 0.088mm and is less than or equal to the magnesia of 0.1mm and the granularity of 25 kilograms and be greater than 0mm and the magnesia being less than or equal to 0.078mm forms.
In described resin-oatmeal, granularity is greater than 0mm and the mass percent that the resin-oatmeal being less than or equal to 0.03mm accounts for described resin-oatmeal total mass equals 85%.The diameter of described hollow organic fibre is 10 ~ 25 μm, and the length of described hollow organic fibre is greater than 0mm and is less than or equal to 8 ㎜.
Described hollow organic fibre is hollow polyethylene fibre; Described organic acid is citric acid; Described resin-oatmeal is resol; Described magnesia sintering agent is magnesium chloride hexahydrate; Described sodium salt dispersion agent is tripoly phosphate sodium STPP.
Described composite anti-penetrating agent is made up of 0.5 kilogram of nano strontium carbonate, 1 kilogram of nanometer Strontium Sulphate and 0.25 kilogram of nano barium sulfate.
Preparation method's concrete steps of the tundish light paint of the present embodiment resin-bonded are as follows:
(1) according to the said components proportioning of the tundish light paint of resin-bonded, raw material is prepared;
(2) magnesia ready in step (1) is loaded in whipping appts;
(3) in the magnesia in the whipping appts in step (2), add paper fiber and hollow organic fibre successively and stir, the rotating speed of stirrer is 35r/min, and churning time is 5 ~ 10min, eliminates fibrous mass;
(4) in the mixture through step (3) process gained, add described resin-oatmeal, organic acid, magnesia sintering agent and sodium salt dispersion agent, after continuing stirring 10 ~ 15min, discharging is packed;
(5) during site operation, directly to the stirring that adds water in the mixture of step (4) process gained, the quality added water is 25% of the quality of the middle gained mixture of step (4) used in construction, and then add composite anti-penetrating agent, manually smear after stirring or machine spraying.
The viscosity of the present embodiment coating is good, sclerosis is fast, plasticity-is strong, without slump phenomenon, volume density is 1.6g/cm
3, the compressive strength after 110 DEG C × 16h toasts is 16Mpa, and vibration flowability is 280 millimeters.This coating is constructed under 70 ± 5 DEG C of environment, total thickness 120mm, and point three times constructions, often can harden all over construction for latter 30 minutes; Experiment proves, this coating mean life is 87 stoves, on average connects and waters time 87h.After the present embodiment adopts composite anti-penetrating agent, in the experiment of crucible method anti-erosion, and do not use composite anti-penetrating agent ratio in embodiment 1, permeation layer thickness reduces 28%.
Embodiment 8
A tundish light paint for resin-bonded, is made up of the component of following weight part: the magnesia of 85 kilograms, 6.0 kilogram resin powder, 2.5 kilograms of organic acids, 3 kilograms of hollow organic fibres, 3 kilograms of paper fibers, 0.3 kilogram of magnesia sintering agent, 0.2 kilogram of sodium salt dispersion agent and 1.75 kilograms of composite anti-penetrating agent.
Described magnesia is greater than 0.2mm by the granularity of 10 kilograms and is less than or equal to the magnesia of 0.3mm, the granularity of 15 kilograms is more than or equal to 0.35mm and is less than or equal to the magnesia of 0.5mm, the granularity of 5 kilograms is greater than 0.088mm and is less than or equal to the magnesia of 0.1mm, the granularity of 30 kilograms is more than or equal to 0.13mm and is less than or equal to the magnesia of 0.2mm, the granularity of 14 kilograms is greater than 0mm and is less than or equal to the magnesia of 0.04mm and the granularity of 11 kilograms and is more than or equal to 0.05mm and the magnesia composition being less than or equal to 0.088mm.
In described resin-oatmeal, granularity is greater than 0mm and the mass percent that the resin-oatmeal being less than or equal to 0.02mm accounts for described resin-oatmeal total mass equals 30%, granularity is more than or equal to 0.025mm and the mass percent that the resin-oatmeal being less than or equal to 0.045mm accounts for described resin-oatmeal total mass equals 65%.The diameter of described hollow organic fibre is 10 ~ 20 μm, and the length of described hollow organic fibre is greater than 3mm and is less than or equal to 8 ㎜.
Described hollow organic fibre is hollow polyethylene fibre; Described organic acid is citric acid; Described resin-oatmeal is resol; Described magnesia sintering agent is magnesium chloride hexahydrate; Described sodium salt dispersion agent is tripoly phosphate sodium STPP.
Described composite anti-penetrating agent is made up of 0.5 kilogram of nano strontium carbonate, 1 kilogram of nanometer Strontium Sulphate and 0.25 kilogram of nano barium sulfate.
The preparation method of the tundish light paint of the present embodiment resin-bonded is identical with embodiment 1.The viscosity of the present embodiment coating is good, sclerosis fast, plasticity-is strong, without slump phenomenon, volume density 1.5g/cm
3, the compressive strength after 110 DEG C × 16h toasts is 22Mpa, and vibration flowability is 285 millimeters.This coating is constructed under 70 ± 5 DEG C of environment, total thickness 120mm, and point three times constructions, often can harden all over construction for latter 30 minutes; Experiment proves, this coating mean life is 98 stoves, on average connects and waters time 98h.After the present embodiment adopts composite anti-penetrating agent, in the experiment of crucible method anti-erosion, and do not use composite anti-penetrating agent ratio in embodiment 2, permeation layer thickness reduces 27%.
Embodiment 9
A tundish light paint for resin-bonded, is made up of the component of following weight part: the magnesia of 85 kilograms, 6.0 kilogram resin powder, 2.5 kilograms of organic acids, 3 kilograms of hollow organic fibres, 3 kilograms of paper fibers, 0.3 kilogram of magnesia sintering agent, 0.2 kilogram of sodium salt dispersion agent and 1.75 kilograms of composite anti-penetrating agent.
Described magnesia be greater than 0.2mm by the granularity of 25 kilograms and be less than or equal to the magnesia of 0.3mm, the granularity of 35 kilograms is greater than 0.088mm and is less than or equal to the magnesia of 0.1mm and the granularity of 25 kilograms and be greater than 0mm and the magnesia being less than or equal to 0.078mm forms.
In described resin-oatmeal, granularity is greater than 0mm and the mass percent that the resin-oatmeal being less than or equal to 0.03mm accounts for described resin-oatmeal total mass equals 85%.The diameter of described hollow organic fibre is 10 ~ 25 μm, and the length of described hollow organic fibre is greater than 0mm and is less than or equal to 8 ㎜.
Described hollow organic fibre is hollow polyethylene fibre; Described organic acid is oxysuccinic acid and tartaric mixture, and oxysuccinic acid and tartaric mass ratio are 1:1.5; Described resin-oatmeal is the mixture of Precondensed UreaFormaldehyde Resin, melmac, modified soluble Precondensed UreaFormaldehyde Resin and modified soluble melmac, and the mass ratio of Precondensed UreaFormaldehyde Resin, melmac, modified soluble Precondensed UreaFormaldehyde Resin and modified soluble melmac is 1:1.5:0.5:3; Described magnesia sintering agent is magnesium chloride hexahydrate; Described sodium salt dispersion agent is tripoly phosphate sodium STPP.
Described composite anti-penetrating agent is made up of 0.5 kilogram of nano strontium carbonate, 1 kilogram of nanometer Strontium Sulphate and 0.25 kilogram of nano barium sulfate.
The preparation method of the tundish light paint of the present embodiment resin-bonded is identical with embodiment 1.The viscosity of the present embodiment coating is good, sclerosis fast, plasticity-is strong, without slump phenomenon, volume density 1.6g/cm
3, the compressive strength after 110 DEG C × 16h toasts is 16Mpa, and vibration flowability is 303 millimeters.This coating is constructed under 70 ± 5 DEG C of environment, total thickness 120mm, and point three times constructions, often can harden all over construction for latter 25 minutes; Experiment proves, this coating work-ing life is 87 stoves, connects and waters time 87h.After the present embodiment adopts composite anti-penetrating agent, in the experiment of crucible method anti-erosion, and do not use composite anti-penetrating agent ratio in embodiment 3, permeation layer thickness reduces 30%.
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. the tundish light paint of a resin-bonded, it is characterized in that, be made up of the component of following weight part: the granularity of 85 ~ 95 weight parts is greater than 0mm and is less than or equal to magnesia and/or forsterite, 0.3 ~ 6.0 parts by weight resin powder, 0.01 ~ 2.5 weight part organic acid, 0.1 ~ 3 weight part hollow organic fibre, 0.5 ~ 3 weight part paper fiber, the magnesia sintering agent of 0.1 ~ 0.3 weight part and 0.01 ~ 0.2 weight part sodium salt dispersion agent of 0.5mm.
2. the tundish light paint of resin-bonded according to claim 1, it is characterized in that, described magnesia and/or forsterite be greater than 0.2mm by the granularity of 25 ~ 35 weight parts and be less than or equal to the magnesia of 0.5mm and/or forsterite, the granularity of 30 ~ 50 weight parts is greater than 0.088mm and the granularity of the magnesia and/or forsterite and 25 ~ 40 weight parts that are less than or equal to 0.2mm is greater than 0mm and is less than or equal to the magnesia of 0.088mm and/or forsterite forms.
3. the tundish light paint of resin-bonded according to claim 1, is characterized in that, the mass ratio of described organic acid and described resin-oatmeal is 1:3 ~ 3:1.
4. the tundish light paint of resin-bonded according to claim 1, is characterized in that, in described resin-oatmeal, granularity is greater than 0mm and the mass percent that the resin-oatmeal being less than or equal to 0.045mm accounts for described resin-oatmeal total mass is more than or equal to 85%.
5. the tundish light paint of resin-bonded according to claim 1, is characterized in that, described organic acid be in citric acid, oxysuccinic acid, tartrate and oxalic acid one or both and two or more; Described resin-oatmeal be in resol, epoxy resin, Precondensed UreaFormaldehyde Resin, melmac, Modified Water Soluble Phenolic Resin, modified soluble epoxy resin, modified soluble Precondensed UreaFormaldehyde Resin and modified soluble melmac one or both and two or more; Described magnesia sintering agent be in light burned magnesite powder, attaclay, magnesium chloride hexahydrate and magnesium sulfate heptahydrate one or both and two or more; Described sodium salt dispersion agent be in Sodium hexametaphosphate 99, tripoly phosphate sodium STPP, sodium tetrapolyphosphate, five sodium polyphosphates, hexapolyphosphate sodium, Trisodium Citrate, sodium carbonate, sodium tartrate and trisodium phosphate one or both and two or more.
6. the tundish light paint of resin-bonded according to claim 1, it is characterized in that, described hollow organic fibre is hollow polyethylene fibre or hollow polypropylene fibres, the diameter of described hollow organic fibre is 10 ~ 25 μm, and the length of described hollow organic fibre is greater than 0mm and is less than or equal to 8 ㎜.
7. the preparation method of the tundish light paint of resin-bonded, it is characterized in that, concrete steps are as follows:
(1) be greater than 0mm according to the tundish light paint of resin-bonded by the granularity of 85 ~ 95 weight parts and be less than or equal to the magnesia of 0.5mm and/or forsterite, 0.3 ~ 6.0 parts by weight resin powder, 0.01 ~ 2.5 weight part organic acid, 0.1 ~ 3 weight part hollow organic fibre, 0.5 ~ 3 weight part paper fiber, the magnesia sintering agent of 0.1 ~ 0.3 weight part and 0.01 ~ 0.2 weight part sodium salt dispersion agent form, preparing raw material;
(2) ready magnesia in step (1) and/or forsterite are loaded in whipping appts;
(3) in the magnesia in the whipping appts in step (2) and/or forsterite, add paper fiber and hollow organic fibre successively and stir, the rotating speed of stirrer is 35r/min, and churning time is 5 ~ 10min, eliminates fibrous mass;
(4) in the mixture through step (3) process gained, add described resin-oatmeal, organic acid, magnesia sintering agent and sodium salt dispersion agent, after continuing stirring 10 ~ 15min, discharging is packed;
(5) during site operation, directly to the stirring that adds water in the mixture of step (4) process gained, the quality added water is 20 ~ 30% of the quality of the middle gained mixture of step (4) used in construction, manually smears or machine spraying after stirring.
8. the tundish light paint of a resin-bonded, it is characterized in that, be made up of the component of following weight part: the granularity of 85 ~ 95 weight parts is greater than 0mm and is less than or equal to the magnesia of 0.5mm and/or forsterite, 0.3 ~ 6.0 parts by weight resin powder, 0.01 ~ 2.5 weight part organic acid, 0.1 ~ 3 weight part hollow organic fibre, 0.5 ~ 3 weight part paper fiber, the magnesia sintering agent of 0.1 ~ 0.3 weight part and 0.01 ~ 0.2 weight part sodium salt dispersion agent, 0.5 ~ 2 weight part composite anti-penetrating agent.
9. the tundish light paint of resin-bonded according to claim 8, it is characterized in that, composite anti-penetrating agent is made up of nano strontium carbonate, nanometer Strontium Sulphate and nano barium sulfate, the mass ratio of nano strontium carbonate, nanometer Strontium Sulphate and nano barium sulfate is 2:4:1, and the granularity of nano strontium carbonate, nanometer Strontium Sulphate and nano barium sulfate is 1 ~ 5nm.
10. the preparation method of the tundish light paint of resin-bonded, it is characterized in that, concrete steps are as follows:
(1) be greater than 0mm according to the tundish light paint of resin-bonded by the granularity of 85 ~ 95 weight parts and be less than or equal to the magnesia of 0.5mm and/or forsterite, 0.3 ~ 6.0 parts by weight resin powder, 0.01 ~ 2.5 weight part organic acid, 0.1 ~ 3 weight part hollow organic fibre, 0.5 ~ 3 weight part paper fiber, the magnesia sintering agent of 0.1 ~ 0.3 weight part, 0.01 ~ 0.2 weight part sodium salt dispersion agent and 0.5 ~ 2 weight part composite anti-penetrating agent form, preparing raw material;
(2) ready magnesia in step (1) and/or forsterite are loaded in whipping appts;
(3) in the magnesia in the whipping appts in step (2) and/or forsterite, add paper fiber and hollow organic fibre successively and stir, the rotating speed of stirrer is 35r/min, and churning time is 5 ~ 10min, eliminates fibrous mass;
(4) in the mixture through step (3) process gained, add described resin-oatmeal, organic acid, magnesia sintering agent and sodium salt dispersion agent, after continuing stirring 10 ~ 15min, discharging is packed;
(5) during site operation, directly to the stirring that adds water in the mixture of step (4) process gained, the quality added water is 20 ~ 30% of the quality of the middle gained mixture of step (4) used in construction, and then add composite anti-penetrating agent, manually smear after stirring or machine spraying.
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