CN104788115A - Fireproof spraying coating for steel ladle working lining and preparation method of fireproof spraying coating - Google Patents
Fireproof spraying coating for steel ladle working lining and preparation method of fireproof spraying coating Download PDFInfo
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Abstract
The invention relates to a fireproof spraying coating for a steel ladle working lining. The fireproof spraying coating is prepared from the following raw materials in parts by weight: 20-50 parts of sintered bauxite clinker, 10-20 parts of fused magnesite, 8-20 parts of fused magnesia-alumina spinel, 5-12 parts of fused white corundum, 5-10 parts of active alumina micropowder, 3-10 parts of andalusite, 3-7 parts of silicon dioxide micropowder, 2-5 parts of a sintering agent, 0.1-0.2 part of externally added explosion-proof fibre, and 0.1-0.3 part of an externally added compound water-reducing agent. The fireproof spraying coating disclosed by the invention is simple in preparation method and simple and convenient to construct; rapid construction maintenance and rapid use of the steel ladle working lining can be realized; because of being compounded by adopting a carbon-free material, the fireproof spraying coating is environment friendly and free from pollution; therefore, molten steel can be purified effectively; the characteristics of high-temperature molten steel to the steel ladle working lining, such as washing resistance, slag corrosion resistance, thermal shock resistance and product comprehensive benefits, can be sufficiently improved; and the service life of the steel ladle working lining can be increased and prolonged effectively.
Description
Technical field
The invention belongs to fire resisting material field, relate to work lining refractory materials that is a kind of and high-temperature molten steel liquation contact site, particularly a kind of ladle work lining fire-proof spray coating and preparation method thereof.
Background technology
The resistance to material of present Iron And Steel Company's steelworks ladle work lining generally adopts the fire-resistant standardized product such as magnesium carbon brick, magnalium carbon refractory brick, because refractory brick exists the disadvantages such as compressive strength is low, void content is higher, resistance to fouling is poor, and construction labour intensity is large, when building by laying bricks or stones, brick and brickwork joint gap are difficult to control consistent, the inconvenient and potential safety hazard of depositing in use of maintenance.Along with the fast development of smelting iron and steel technology, requirements at the higher level are proposed to ladle working lining refractory materials, especially its work lining is very fast by high-temperature molten steel thermal shocking loss, maintenance cycle is long, affect the whole service life of the resistance to material of work lining, general work lining is secondary at 100 to 120 bags for work-ing life.In this case, need develop that a kind of erosion-resisting characteristics is good, the strong and work lining long-life type refractory materials that construction maintenance is fast and simple of antioxidant property, abrasion resistance.The costs such as magnesium carbon refractory brick, magnalium carbon refractory brick are high, complex manufacturing, the construction maintenance cycle is long, work-ing life is short and comprehensive cost is high.
Chinese patent (publication number is CN103896615A) describes a kind of ladle liner alumina-magnesia castable and preparation method thereof.Its technical scheme is: with the micropore corundum in granules of 50 ~ 65wt% for aggregate, with the aluminium Silica hydrogel powder of the α-Al2O3 micro mist of the fine magnesium oxide micro-powder of the corundum fine powder of the corundum fine particle of 10 ~ 15wt%, 15 ~ 30wt%, 2 ~ 8wt%, 2 ~ 8wt%, 2 ~ 8wt% for substrate material, the additional water accounting for aggregate and substrate material sum 3 ~ 10wt%, stir, vibratory compaction, 12 ~ 36 hours are incubated, obtained ladle liner alumina-magnesia castable under 100 ~ 150 DEG C of conditions.
Chinese patent (publication number is CN103601516A) describes a kind of ladle lining repair material and preparation method thereof.Be made up of siccative and additional water, siccative by weight percentage, composed of the following components: corundum 38 ~ 76%, magnesite clinker 12 ~ 45%, sintering aid 4 ~ 12%, bonding agent 2 ~ 4%, clay 1 ~ 5%, tripoly phosphate sodium STPP 1 ~ 4% and subunit Mierocrystalline cellulose 1 ~ 2%, the add-on of water is 12 ~ 16% of siccative weight.
Chinese patent (publication number is CN103601517A) describes a kind of ladle working lining Chemical bond aluminium MgO based mending materials.Be made up of siccative and additional binding agent, described siccative by weight percentage, composed of the following components: High-Alumina aggregate 75 ~ 80%, magnesite clinker fine powder 10 ~ 15%, alumina powder 1 ~ 5% and clay 1 ~ 5%, wherein, High-Alumina aggregate and magnesite clinker fine powder are main component, alumina powder is as sintering aid, and the add-on of binding agent is 5 ~ 10% of siccative weight.
Chinese patent (publication number is CN103086728A) describes a kind of steel ladle working layer anti-explosion refractory castable, it is characterized in that: the introducing in mould material by composite anti-explosion agent and composite water-reducing agent, and adjust composition and the proportioning of mould material matrix, improve the internal structure of material, improve ventilation property and the medium temperature intensity of material, effectively can avoid the decortication of mould material in bake process, peel off the problems such as even explosion, avoid causing damage to user, baking time can be reduced simultaneously, save energy, decreasing pollution.
Chinese patent (publication number is CN103833385A) describes a kind of steel ladle working layer brick coating against binding slags, its composition by weight percent is: magnesite powder 65 ~ 85%, quartz sand powder 8 ~ 20%, raw clay powder 3 ~ 8%, phosphoric acid salt 2 ~ 5%, organic bond 0.5 ~ 2%; Water, additional, account for 30 ~ 45% of powder gross weight.
Chinese patent (publication number is CN102718516A) describes a kind of ladle Gunning refractory, effectively can solve the problem of ladle hot spray repair.Technical scheme is this spray material is by following weight percent meter: homogenization material 65-85%, magnesia 5-15%, and useless corundum spinelle 5-15%, bonding agent 2-10%, softening agent 1-5% mixes and makes.
Chinese patent (publication number is CN102491763A) describes a kind of steel ladle working lining brick and preparation method thereof.Its technical scheme is: with the α-Al2O3 micro mist of the mixture of the MgO micro mist of 3 ~ 7wt% and SiO2 micro mist, the corundum in granules of 78 ~ 88wt%, the corundum fine powder of 6 ~ 10wt% and 2 ~ 6wt% for raw material, with the mixture of the wooden calcium sulfonate of 0.11 ~ 0.20wt%, metal A l powder, sodium laurylsulfonate, Sodium dodecylbenzene sulfonate and azo-compound for admixture.By the add-on of material content and admixture, by even for the mixture premix of admixture and MgO micro mist and SiO2 micro mist, add all the other raw materials to mix, additional 3.5 ~ 6.5wt% water again, stir 0.5 ~ 1 minute, pour into a mould after supersound process, vibratory compaction, base substrate at room temperature maintenance 8 ~ 24 hours, is then incubated 12 ~ 36 hours under 110 ~ 200 DEG C of conditions.
Chinese patent (publication number is CN102515795A) the invention discloses a kind of steel ladle bottom hot repair material, it is by salic particulate material, make containing the raw material such as magnesium oxide particle aggregate, whiteruss, Potcrate or potassium perchlorate, ferric oxide, metal-powder, first stir mixed for salic and magnesian refractory particle material, add whiteruss fully to mix, until particulate material is evenly wrapped up by whiteruss, obtain materials A; Then ferric oxide and Potcrate or potassium perchlorate are mixed, obtain material B; Finally materials A, B and metal-powder are mixed evenly.
Chinese patent (publication number is CN101481257A) the invention discloses a kind of ladle slag line gunning refractory, comprise material of main part, bonding agent and B2O3 additive, material of main part is consistent with by spray repair body material, for the magnesia and/or calcareous basic material of magnesium, chemical composition is MgO, CaO, SiO2; The critical granularity of component is less than or equal to 3mm, and size-grade distribution is wherein coarse particles: middle particle: fine powder=(4.2 ~ 5.8): (1.5 ~ 2.8): (2.4 ~ 3.9); Bonding agent is phosphoric acid salt and the silicate combined binder of arbitrary proportion; The calcareous material of main part 85 ~ 95% of magnesia, magnesium, bonding agent: 1 ~ 10%, B2O3 additive: 0.1 ~ 5%.
Chinese patent (publication number is CN101486581A) describes a kind of plastic repair material for ladle working lining, belongs to fire resisting material field.Repair material major ingredient weight percent is: the alumine of 5-70%, the corundum of 20-90%, the magnesium oxide of 4-20%, and major ingredient separately adds the silicon sol accounting for major ingredient weight 5-20% outward.The granularity of alumine is not more than 10mm, and Al2O3 content is not less than 80%; Corundum comprises Brown Alundum, sub-white corundum, plate diamond spar and fused white corundum etc.; Magnesium oxide comprises medium-grade magnesite, highly-purity magnesite and electrosmelted magnesite clinker etc., and its content of MgO is not less than 93.0%; Silicon sol solution, SiO2 content is that to be not more than 0.4%, pH scope be 8.5-12 to 20.0%-40.0%, Na2O content.
Above patent compares with the present invention and has substantial difference.Still do not retrieve at present identical document in ladle work lining fire-proof spray coating preparation method and open patent of invention with this technology.
Summary of the invention
The present invention is just for weak point existing in above-mentioned prior art, under fully energy-saving and cost-reducing prerequisite, using continuously and the requirement such as construction maintenance is efficient and convenient to meet ladle work lining, developing and providing a kind of ladle work lining fire-proof spray coating; Work lining spray material adopts the raw materials such as sintering bauxite clinker, electrosmelted magnesite clinker, electric smelting aluminum-spinel, Reactive alumina, fused white corundum, andaluzite, ultrafine silica powder, improves hot strength and the high-temperature erosion-resistant performance of material through improvement proportion optimizing; Preparation technology and construction maintenance method easy, it can replace the magnesium carbon refractory brick of prior art, magnalium carbon refractory brick and construction maintenance mode, and significantly improves the erosion-resisting characteristics to high-temperature molten steel solution; Have good quick quick-drying sintering character, explosion-proof performance excellence, material bond strength is high, resistance molten steel performance of flushing is excellent, materials consumption and comprehensive cost reduce feature; This fire-resistant spray material adopts carbon-free material assembly, environment friendly and pollution-free, can effective purify hot metal; Be widely used in ladle and high-temperature molten steel liquation contact site and require the position such as scour resistance and the strong work lining of resistance to fouling, be promoted to more than 180 bags time the work-ing life effectively improving and extend work lining.
Technical scheme of the present invention is achieved in that a kind of ladle work lining fire-proof spray coating, it is prepared from by the raw material of following parts by weight: fused brown corundum 20 to 50 parts, electrosmelted magnesite clinker 10 to 20 parts, electric smelting aluminum-spinel 8 to 20 parts, fused white corundum 5 to 12 parts, Reactive alumina 5 to 10 parts, andaluzite 3 to 10 parts, fine silica powder 3 to 7 parts, agglutinant 2 to 5 parts, additional explosion-proof fiber 0.1 to 0.2 part, additional composite water-reducing agent 0.1 to 0.3 part.
Described sintering bauxite clinker is made up of two kinds of raw materials of granularity 3 to 4mm and 1 to 3 mm, total content of alumina >=88% in sintering bauxite clinker; Described electrosmelted magnesite clinker is made up of two kinds of raw materials of granularity 1 to 3mm and 0.1 to 1 ㎜, magnesium oxide total content >=95% in electrosmelted magnesite clinker; Described electric smelting aluminum-spinel is made up of two kinds of raw materials of granularity 0.1 to 1mm and < 0.074mm, and in electric smelting aluminum-spinel, total content of alumina is >=90%, magnesium oxide total content >=8%; Described fused white corundum granularity < 0.044mm, in fused white corundum, total content of alumina is >=99%; Described Reactive alumina granularity < 4 μm, in Reactive alumina, total content of alumina is >=99%; Described andaluzite is made up of granularity 0.08 to 1mm raw material, and in andaluzite, total content of alumina is >=60%; Described fine silica powder granularity < 1 μm, in fine silica powder, total silica content is >=95%.Described agglutinant is kaolin, and granularity is 0.088 to 0.1mm, and Alumina from Kaolin total content is >=35%;
Described explosion-proof fiber is 105 DEG C explosion-proof fibrous by fusing point; Described composite water-reducing agent is made up of the SM of mass percent 20% to 80% and the Sodium hexametaphosphate 99 of mass percent 30% to 60%.
A kind of preparation method of ladle work lining fire-proof spray coating as above, its preparation method is as follows: first prepare burden according to above-mentioned formula, sintering bauxite clinker, electrosmelted magnesite clinker are added in mixing machine together with explosion-proof fiber and is uniformly mixed, time is 2 minutes, and then add electric smelting aluminum-spinel successively, Reactive alumina, fused white corundum, andaluzite, fine silica powder, agglutinant, composite water-reducing agent be uniformly mixed, time is 3 to 4 minutes, obtains spray material product; Load in moisture-proof packing bag after the spray material product prepared is weighed, deposit dry place after sealing, ready for delivery uses to ladle working-yard.
Index is after testing: after 110 DEG C × 24h drying, volume density is 2.65 to 2.75g/cm3; After 110 DEG C × 24h drying, cold crushing strength is 55 to 70MPa; After 110 DEG C × 24h drying, strength at normal temperature is 8 to 10MPa; After 1550 DEG C × 3h burns, compressive strength is 90 to 110MPa; After 1550 DEG C × 3h burns, folding strength is 12 to 15MPa; After 1550 DEG C × 3h burns, permanent line velocity of variation is 0.15 to 0.3%.
The invention has the beneficial effects as follows: a kind of ladle work lining fire-proof spray coating, preparation method is simple, and easy construction, can realize the quick construction maintenance of work lining and come into operation fast; This spray material adopts carbon-free material assembly, environment friendly and pollution-free, both can effective purify hot metal, substantially improve again the abrasion resistance of ladle working lining layer high-temperature molten steel, resistance to slag corrosion, heat-resistant knocking stability energy, the features such as product comprehensive benefit lifting, can effectively improve and extend ladle work lining work-ing life.
Embodiment
A kind of ladle work lining fire-proof spray coating, it is prepared from by the raw material of following parts by weight: fused brown corundum 20 to 50 parts, electrosmelted magnesite clinker 10 to 20 parts, electric smelting aluminum-spinel 8 to 20 parts, fused white corundum 5 to 12 parts, Reactive alumina 5 to 10 parts, andaluzite 3 to 10 parts, fine silica powder 3 to 7 parts, agglutinant 2 to 5 parts, additional explosion-proof fiber 0.1 to 0.2 part, additional composite water-reducing agent 0.1 to 0.3 part.
Described sintering bauxite clinker is made up of two kinds of raw materials of granularity 3 to 4mm and 1 to 3 mm, total content of alumina >=88% in sintering bauxite clinker; Described electrosmelted magnesite clinker is made up of two kinds of raw materials of granularity 1 to 3mm and 0.1 to 1 ㎜, magnesium oxide total content >=95% in electrosmelted magnesite clinker; Described electric smelting aluminum-spinel is made up of two kinds of raw materials of granularity 0.1 to 1mm and < 0.074mm, and in electric smelting aluminum-spinel, total content of alumina is >=90%, magnesium oxide total content >=8%; Described fused white corundum granularity < 0.044mm, in fused white corundum, total content of alumina is >=99%; Described Reactive alumina granularity < 4 μm, in Reactive alumina, total content of alumina is >=99%; Described andaluzite is made up of granularity 0.08 to 1mm raw material, and in andaluzite, total content of alumina is >=60%; Described fine silica powder granularity < 1 μm, in fine silica powder, total silica content is >=95%.Described agglutinant is kaolin, and granularity is 0.088 to 0.1mm, and Alumina from Kaolin total content is >=35%;
Described explosion-proof fiber is 105 DEG C explosion-proof fibrous by fusing point; Described composite water-reducing agent is made up of the SM of mass percent 20% to 80% and the Sodium hexametaphosphate 99 of mass percent 30% to 60%.
A kind of preparation method of ladle work lining fire-proof spray coating as above, its preparation method is as follows: first prepare burden according to above-mentioned formula, sintering bauxite clinker, electrosmelted magnesite clinker are added in mixing machine together with explosion-proof fiber and is uniformly mixed, time is 2 minutes, and then add electric smelting aluminum-spinel successively, Reactive alumina, fused white corundum, andaluzite, fine silica powder, agglutinant, composite water-reducing agent be uniformly mixed, time is 3 to 4 minutes, obtains spray material product; Load in moisture-proof packing bag after the spray material product prepared is weighed, deposit dry place after sealing, ready for delivery uses to ladle working-yard.
Index is after testing: after 110 DEG C × 24h drying, volume density is 2.65 to 2.75g/cm3; After 110 DEG C × 24h drying, cold crushing strength is 55 to 70MPa; After 110 DEG C × 24h drying, strength at normal temperature is 8 to 10MPa; After 1550 DEG C × 3h burns, compressive strength is 90 to 110MPa; After 1550 DEG C × 3h burns, folding strength is 12 to 15MPa; After 1550 DEG C × 3h burns, permanent line velocity of variation is 0.15 to 0.3%.
Embodiment 1: a kind of ladle work lining fire-proof spray coating, by weight; Sintering bauxite clinker 50 parts, electrosmelted magnesite clinker 10 parts, electric smelting aluminum-spinel 8 parts, fused white corundum 8 parts, Reactive alumina 5 parts, andaluzite 3 parts, fine silica powder 3 parts, agglutinant 2 parts, additional explosion-proof fiber 0.1 part, additional composite water-reducing agent 0.15 part.
A kind of ladle work lining fire-proof spray coating, its preparation method is as follows: first prepare burden according to above-mentioned formula, sintering bauxite clinker, electrosmelted magnesite clinker are added in mixing machine together with explosion-proof fiber and is uniformly mixed, time is 2 minutes, and then add electric smelting aluminum-spinel successively, Reactive alumina, fused white corundum, andaluzite, fine silica powder, agglutinant, composite water-reducing agent be uniformly mixed, time is 3 to 4 minutes, obtains spray material product; Load in moisture-proof packing bag after the spray material product prepared is weighed, deposit dry place after sealing, ready for delivery uses to ladle working-yard.
Embodiment 2: a kind of ladle work lining fire-proof spray coating, by weight; Sintering bauxite clinker 30 parts, electrosmelted magnesite clinker 15 parts, electric smelting aluminum-spinel 12 parts, fused white corundum 10 parts, Reactive alumina 6 parts, andaluzite 5 parts, fine silica powder 4 parts, agglutinant 4 parts, additional explosion-proof fiber 0.15 part, additional composite water-reducing agent 0.2 part.
A kind of ladle work lining fire-proof spray coating, its preparation method is as follows: first prepare burden according to above-mentioned formula, sintering bauxite clinker, electrosmelted magnesite clinker are added in mixing machine together with explosion-proof fiber and is uniformly mixed, time is 2 minutes, and then add electric smelting aluminum-spinel successively, Reactive alumina, fused white corundum, andaluzite, fine silica powder, agglutinant, composite water-reducing agent be uniformly mixed, time is 3 to 4 minutes, obtains spray material product; Load in moisture-proof packing bag after the spray material product prepared is weighed, deposit dry place after sealing, ready for delivery uses to ladle working-yard.
Embodiment 3: a kind of ladle work lining fire-proof spray coating, by weight; Sintering bauxite clinker 35 parts, electrosmelted magnesite clinker 20 parts, electric smelting aluminum-spinel 10 parts, fused white corundum 7 parts, Reactive alumina 8 parts, andaluzite 4 parts, fine silica powder 5 parts, agglutinant 5 parts, additional explosion-proof fiber 0.2 part, additional composite water-reducing agent 0.25 part.
A kind of ladle work lining fire-proof spray coating, its preparation method is as follows: first prepare burden according to above-mentioned formula, sintering bauxite clinker, electrosmelted magnesite clinker are added in mixing machine together with explosion-proof fiber and is uniformly mixed, time is 2 minutes, and then add electric smelting aluminum-spinel successively, Reactive alumina, fused white corundum, andaluzite, fine silica powder, agglutinant, composite water-reducing agent be uniformly mixed, time is 3 to 4 minutes, obtains spray material product; Load in moisture-proof packing bag after the spray material product prepared is weighed, deposit dry place after sealing, ready for delivery uses to ladle working-yard.
Embodiment 4: a kind of ladle work lining fire-proof spray coating, by weight; Sintering bauxite clinker 25 parts, electrosmelted magnesite clinker 20 parts, electric smelting aluminum-spinel 20 parts, fused white corundum 9 parts, Reactive alumina 8 parts, andaluzite 5 parts, fine silica powder 5 parts, agglutinant 3 parts, additional explosion-proof fiber 0.15 part, additional composite water-reducing agent 0.3 part.
A kind of ladle work lining fire-proof spray coating, its preparation method is as follows: first prepare burden according to above-mentioned formula, sintering bauxite clinker, electrosmelted magnesite clinker are added in mixing machine together with explosion-proof fiber and is uniformly mixed, time is 2 minutes, and then add electric smelting aluminum-spinel successively, Reactive alumina, fused white corundum, andaluzite, fine silica powder, agglutinant, composite water-reducing agent be uniformly mixed, time is 3 to 4 minutes, obtains spray material product; Load in moisture-proof packing bag after the spray material product prepared is weighed, deposit dry place after sealing, ready for delivery uses to ladle working-yard.
Embodiment 5: a kind of ladle work lining fire-proof spray coating, by weight; Sintering bauxite clinker 30 parts, electrosmelted magnesite clinker 20 parts, electric smelting aluminum-spinel 15 parts, fused white corundum 8 parts, Reactive alumina 5 parts, andaluzite 4 parts, fine silica powder 3 parts, agglutinant 3 parts, additional explosion-proof fiber 0.1 part, additional composite water-reducing agent 0.2 part.
A kind of ladle work lining fire-proof spray coating, its preparation method is as follows: first prepare burden according to above-mentioned formula, sintering bauxite clinker, electrosmelted magnesite clinker are added in mixing machine together with explosion-proof fiber and is uniformly mixed, time is 2 minutes, and then add electric smelting aluminum-spinel successively, Reactive alumina, fused white corundum, andaluzite, fine silica powder, agglutinant, composite water-reducing agent be uniformly mixed, time is 3 to 4 minutes, obtains spray material product; Load in moisture-proof packing bag after the spray material product prepared is weighed, deposit dry place after sealing, ready for delivery uses to ladle working-yard.
Ladle work lining fire-proof spray coating of the present invention after testing index is: after 110 DEG C × 24h drying, volume density is 2.65 to 2.75g/cm3; After 110 DEG C × 24h drying, cold crushing strength is 55 to 70MPa; After 110 DEG C × 24h drying, strength at normal temperature is 8 to 10MPa; After 1550 DEG C × 3h burns, compressive strength is 90 to 110MPa; After 1550 DEG C × 3h burns, folding strength is 12 to 15MPa; After 1550 DEG C × 3h burns, permanent line velocity of variation is 0.15 to 0.3%.
Claims (5)
1. a ladle work lining fire-proof spray coating, it is characterized in that: it is prepared from by the raw material of following parts by weight: fused brown corundum 20 to 50 parts, electrosmelted magnesite clinker 10 to 20 parts, electric smelting aluminum-spinel 8 to 20 parts, fused white corundum 5 to 12 parts, Reactive alumina 5 to 10 parts, andaluzite 3 to 10 parts, fine silica powder 3 to 7 parts, agglutinant 2 to 5 parts, additional explosion-proof fiber 0.1 to 0.2 part, additional composite water-reducing agent 0.1 to 0.3 part.
2. ladle work lining fire-proof spray coating according to claim 1, is characterized in that: described sintering bauxite clinker is made up of two kinds of raw materials of granularity 3 to 4mm and 1 to 3 mm, total content of alumina >=88% in sintering bauxite clinker; Described electrosmelted magnesite clinker is made up of two kinds of raw materials of granularity 1 to 3mm and 0.1 to 1 ㎜, magnesium oxide total content >=95% in electrosmelted magnesite clinker; Described electric smelting aluminum-spinel is made up of two kinds of raw materials of granularity 0.1 to 1mm and < 0.074mm, and in electric smelting aluminum-spinel, total content of alumina is >=90%, magnesium oxide total content >=8%; Described fused white corundum granularity < 0.044mm, in fused white corundum, total content of alumina is >=99%; Described Reactive alumina granularity < 4 μm, in Reactive alumina, total content of alumina is >=99%; Described andaluzite is made up of granularity 0.08 to 1mm raw material, and in andaluzite, total content of alumina is >=60%; Described fine silica powder granularity < 1 μm, in fine silica powder, total silica content is >=95%.
3. the agglutinant described in is kaolin, and granularity is 0.088 to 0.1mm, and Alumina from Kaolin total content is >=35%;
Ladle work lining fire-proof spray coating according to claim 1, is characterized in that: described explosion-proof fiber is 105 DEG C explosion-proof fibrous by fusing point; Described composite water-reducing agent is made up of the SM of mass percent 20% to 80% and the Sodium hexametaphosphate 99 of mass percent 30% to 60%.
4. one kind requires the preparation method of the ladle work lining fire-proof spray coating as described in 1 as profit, it is characterized in that, its preparation method is as follows: first prepare burden according to above-mentioned formula, sintering bauxite clinker, electrosmelted magnesite clinker are added in mixing machine together with explosion-proof fiber and is uniformly mixed, time is 2 minutes, and then add electric smelting aluminum-spinel successively, Reactive alumina, fused white corundum, andaluzite, fine silica powder, agglutinant, composite water-reducing agent be uniformly mixed, time is 3 to 4 minutes, obtains spray material product; Load in moisture-proof packing bag after the spray material product prepared is weighed, deposit dry place after sealing, ready for delivery uses to ladle working-yard.
5. ladle work lining fire-proof spray coating according to claim 1, index is after testing: after 110 DEG C × 24h drying, volume density is 2.65 to 2.75g/cm3; After 110 DEG C × 24h drying, cold crushing strength is 55 to 70MPa; After 110 DEG C × 24h drying, strength at normal temperature is 8 to 10MPa; After 1550 DEG C × 3h burns, compressive strength is 90 to 110MPa; After 1550 DEG C × 3h burns, folding strength is 12 to 15MPa; After 1550 DEG C × 3h burns, permanent line velocity of variation is 0.15 to 0.3%.
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| CN116396063A (en) * | 2023-03-27 | 2023-07-07 | 宜兴金君耐火炉料有限公司 | 99 castable for resisting copper liquid erosion and peeling in low-oxygen copper rod production |
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| CN105060910B (en) * | 2015-09-02 | 2017-05-17 | 山东钢铁股份有限公司 | Converter flue discharge chute repair material and preparation method thereof |
| CN108373337A (en) * | 2018-03-05 | 2018-08-07 | 北京利尔高温材料股份有限公司 | A kind of wear-resisting gunning refractory of blast furnace lining |
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| CN111635220A (en) * | 2020-06-15 | 2020-09-08 | 武汉钢铁有限公司 | Refractory material for preventing slag entrapment of steel ladle, steel ladle slag entrapment prevention product and preparation method of steel ladle slag entrapment prevention product |
| CN111875362A (en) * | 2020-06-29 | 2020-11-03 | 洛阳利尔耐火材料有限公司 | Fire facing tile for gasification furnace and preparation method thereof |
| CN112094512A (en) * | 2020-08-25 | 2020-12-18 | 贵阳明通炉料有限公司 | High-performance sialon corundum coating and preparation method thereof |
| CN115246733A (en) * | 2021-04-28 | 2022-10-28 | 宝山钢铁股份有限公司 | High-durability tundish coating and application thereof |
| CN114031412A (en) * | 2021-12-08 | 2022-02-11 | 钢城集团凉山瑞海实业有限公司 | Spray paint for large nozzle of semisteel tank and preparation method thereof |
| CN115637068A (en) * | 2022-09-20 | 2023-01-24 | 首钢集团有限公司 | Coating for runner brick, preparation method and use method thereof, coating and runner brick |
| CN115872730A (en) * | 2022-11-28 | 2023-03-31 | 湖北兴龙高温节能材料有限公司 | Anti-slag-sticking thermal spray repair material for foundry ladle and preparation method and use method thereof |
| CN115872730B (en) * | 2022-11-28 | 2023-11-07 | 湖北兴龙高温节能材料有限公司 | Slag-sticking-preventing thermal-state gunning material for ladle, and preparation method and use method thereof |
| CN116396063A (en) * | 2023-03-27 | 2023-07-07 | 宜兴金君耐火炉料有限公司 | 99 castable for resisting copper liquid erosion and peeling in low-oxygen copper rod production |
| CN116396063B (en) * | 2023-03-27 | 2024-02-27 | 宜兴金君耐火炉料有限公司 | 99 castable for resisting copper liquid erosion and peeling in low-oxygen copper rod production |
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Application publication date: 20150722 |