CN101928142B - High-purity heavy zirconia refractory product and preparation method - Google Patents
High-purity heavy zirconia refractory product and preparation method Download PDFInfo
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Abstract
The invention belongs to the field of refractory materials and provides a high-purity heavy zirconia refractory product and a preparation method. The content of ZrO2 (including stabilizing agents) in the product is not less than 98wt% and ZrO2 is a key refractory material in the superhigh temperature field. The refractory product has the characteristics of high use temperature, small pore diameter, uniform distribution, good erosion resistance and scour resistance, long service life, etc through reasonably selecting and controlling the raw material variety, grain gradation and stabilization rate and adopting organic binding agents, the way of isostatic pressing or vibrating ramming under pressure to form the green bodies and proper firing temperature.
Description
Technical field
The invention belongs to fire resisting material field, relate generally to a kind of high-purity heavy zirconia refractory product and preparation method.
Background technology
Zirconium white is a kind of important refractory raw material, and fusing point is up to 2715 ℃, and physicochemical property is excellent.Many refractory materialss all add a certain amount of zirconium white, such as electric smelting AZS brick, Al for improving use properties
2O
3-ZrO
2-C brick, Cr
2O
3-Al
2O
3-ZrO
2Brick etc.
High-purity zirconia refractory product typically refers to zirconium white (comprising stablizer) content at the refractory product more than 98%; it is take zirconia particles or Bubble zirconia, powdered zirconium oxide, stablizer, wedding agent etc. as raw material, by founding, cast, machine press, etc. the moulding means such as static pressure, ramming prepare the refractory product of desired shape.So-called heavy zirconia goods are different from the heat insulation thermal insulation light goods such as Bubble zirconia goods, Zirconium oxide fibre goods and zirconium white foamed brick, typically refer to volume density greater than 3.8g/cm
3The high-grade refractory take zirconia particles and fine powder as raw material.With contain Zr refractory material and compare, the high-purity heavy zirconia refractory materials has difficult decomposition, good chemical stability under use temperature high (2300～2400 ℃ of maximum operation (service) temperatures), anti-erosion, antiscour, the high temperature, is a kind of high-performance refractory goods.The high-purity heavy zirconia refractory product range of application is very extensive, and domestic, international at present have very vigorous demand to high performance high-purity heavy zirconia refractory product.
At present, market mostly has working conditions harshness, article shape complexity, the high requirement of chemical purity to high-purity heavy zirconia refractory product, and technology and the technique of more existing preparation high-purity zirconia goods can't satisfy condition.
At present, the main representative of high-purity heavy zirconia refractory product is field of steel-making continuous small-billet casting tundish zirconium oxide metering nozzle, its size little (Φ 50mm, h80mm), apparent porosity low (≈ 15%), the high (〉=4.6g/cm of volume density
3), its zirconia content is about 95%, take granularity less than the electric smelting PSZ of 0.15mm, baddeleyite as raw material, add certain additive and wedding agent, through the preparation of blank mix, the technique preparation such as mechanical pressing, drying, high temperature burn till.This production technique only is fit to preparation small size, simple shape, high-purity zirconia refractory product that density is high.
Zirconium white has 3 kinds of crystal formations: monocline crystalline phase, tetragonal phase, cube crystalline phase.During temperature variation, between various crystal formations the phase co-conversion can occur.Zirconic crystal conversion can be followed more violent volume change, causes zirconia material to cause structure deteriorate in production, use procedure.In the design of zirconia refractory is produced, the good result of use of zircite product that rational grain composition, suitable stable rate, rational firing temperature, the desirable microstructure guarantee of raw material are produced.
Summary of the invention
The object of the invention is to propose a kind of high-purity heavy zirconia refractory product and preparation method, by to raw material type, grain size distribution, the Rational choice of stablizing rate and control, adopt organic bond, suitable green compact molding mode and firing temperature, make it have the characteristics such as use temperature is high, air vent aperture is low, uniform microstructure, this high-purity heavy zirconia refractory product can use under the working condition of harshness for a long time as ultrahigh-temperature field furnace lining material.
The present invention finishes the technical scheme that its invention task takes: a kind of high-purity heavy zirconia refractory product, ZrO in these goods
2Content 〉=98wt%, described ZrO
2Content comprise stablizer; It is the crucial refractory materials in ultrahigh-temperature field, it is characterized in that this refractory product raw material is by 60%～70% PSZ particle, 15%～20% PSZ fine powder, 10%～20% size range is that the monoclinic zirconia micro mist of 0.5um～10um consists of, and adds organic bond; Described percentage ratio is mass percent.
The preparation method of high-purity heavy zirconia refractory product, the molding mode of base substrate is for waiting static pressure or vibration pressurization ramming process, at first with zirconia particles, powdered zirconium oxide, monoclinic zirconia micro mist, organic bond mixing and stirring, sieve, in the mould of packing into after the drying, Deng static pressure or vibration pressurization ramming process base substrate, pressure is 150MPa～180MPa during the isostatic pressing base substrate, base substrate is after 110 ℃～180 ℃ dryings, 1630 ℃～1800 ℃ are burnt till, and namely get high-purity heavy zirconia refractory product.
Described PSZ particle refers to that the grain graininess scope is the PSZ particle of 0.15mm～1mm, and wherein the PSZ particulate material of granularity 0.5mm～1mm, granularity 0.35mm～0.5mm, granularity 0.15mm～0.35mm accounts for respectively 10%～20%, 20%～30%, 20%～40% of raw material total mass.
Described PSZ particle refers to electrically molten magnesia PSZ particle, electric smelting calcium oxide PSZ particle, electro-melting yttrium oxide PSZ particle, electric smelting calcium yttrium composite portion stabilizing zirconia particle, electric molten magnesite yttrium composite portion stabilizing zirconia particle or the combination in them.
Described PSZ particle refers to that stable phase (comprising Tetragonal and Emission in Cubic) content is at 60%～85% electric-melting zirconia raw material.
Described PSZ fine powder refers to electrically molten magnesia PSZ fine powder, electric smelting calcium oxide PSZ fine powder, electro-melting yttrium oxide PSZ fine powder, electric smelting calcium yttrium composite portion stabilizing zirconia fine powder, electric molten magnesite yttrium composite portion stabilizing zirconia fine powder.
Described PSZ fine powder refers to that stable phase (comprising Tetragonal and Emission in Cubic) content is at 60%～85% electric-melting zirconia raw material.
Described PSZ powder particle size scope is 30um～150um.
Described organic bond is a kind of in resol spirituous solution, water-base resin, the polyvinyl alcohol water solution, and add-on accounts for 3%～5% (adding) of whole raw material total mass.The normal inorganic bonding agents such as phosphoric acid salt, sulfonated lignin, sulphite that adopt still have a large amount of K as the wedding agent of zirconia refractory after the refractory product high temperature of these inorganic bonding agent preparations burns till in the prior art
2O, Na
2O, P
2O
5Residual Deng composition, seriously reduced purity and the applied at elevated temperature performance of goods.Organic bond then can burn mistake fully through the high temperature sintering process, and is residual without any impurity, significantly improves purity and the applied at elevated temperature performance of high-purity goods.
Compared with prior art, the advantage such as that technical scheme of the present invention has is applied widely, do not suffer from the product shape and size restrictions, apparent porosity 20%～30% of the present invention, volume density 4.0g/cm
3～4.5g/cm
3, have that use temperature is high, even aperture distribution, erosion resistance and characteristics such as scour resistance is good, work-ing life is high.
Embodiment
Embodiment 1:
Take by weighing electric smelting calcium PSZ particle (stablizing rate 75%) granularity 0.5mm～1mm 1kg, granularity 0.35mm～0.5mm 2.5kg, granularity 0.15mm～0.35mm 3kg, premix 3min in the high speed muller, add resol spirituous solution 0.35kg, continue high-speed stirring 5min, again to wherein adding electric smelting calcium PSZ fine powder (stablizing rate 75%) 30um～74um 1kg, 74um～150um 1kg, monoclinic zirconia micro mist 0.5um～6um 1.5kg, behind the high-speed stirring 10min, sieve, pack into after the drying in the mould that is consisted of by steel core and rubber coating, the inferior static pressure compression moulding of 150MPa pressure base substrate, base substrate is behind 180 ℃ of dry 12h, 1700 ℃ of the shuttle kilns of packing into burn till, and namely get high-purity heavy zirconia refractory product.This goods apparent porosity 25%, volume density 4.3g/cm
3, ZrO
2+ HfO
2+ CaO=99.62wt%, meta aperture 7mm, mean pore size 4mm, use temperature reaches more than 2300 ℃.
Embodiment 2:
Take by weighing electric molten magnesite PSZ particle (stablizing rate 80%) granularity 0.5mm～1mm 1kg, granularity 0.35mm～0.5mm 2.5kg, granularity 0.15mm～0.35mm 3kg, premix 3min in the high speed muller, add resol spirituous solution 0.35kg, continue high-speed stirring 5min, again to wherein adding electric molten magnesite PSZ fine powder (stablizing rate 80%) 30um～74um 1kg, 74um～150um 1kg, monoclinic zirconia micro mist 0.5um～6um 1.5kg, behind the high-speed stirring 10min, sieve, pack into after the drying in the mould that is consisted of by steel core and rubber coating, the inferior static pressure compression moulding of 150MPa pressure base substrate, base substrate is behind 180 ℃ of dry 12h, 1700 ℃ of the shuttle kilns of packing into burn till, and namely get high-purity heavy zirconia refractory product.This goods apparent porosity 30%, volume density 4.04g/cm
3, ZrO
2+ HfO
2+ MgO=99.52wt%, meta aperture 8mm, mean pore size 5mm, use temperature reaches more than 2200 ℃.
Embodiment 3:
Take by weighing the yttrium partially stabilized zirconia particles of electric smelting (stablizing rate 85%) granularity 0.5mm～1mm 1kg, granularity 0.35mm～0.5mm 2.5kg, granularity 0.15mm～0.35mm 3kg, premix 3min in the high speed muller, add resol spirituous solution 0.35kg, continue high-speed stirring 5min, again to wherein adding the yttrium partially stabilized powdered zirconium oxide of electric smelting (stablizing rate 85%) 30um～74um 1kg, 74um～150um 1kg, monoclinic zirconia micro mist 0.5um～6um 1.5kg, behind the high-speed stirring 10min, sieve, pack into after the drying in the mould that is consisted of by steel core and rubber coating, the inferior static pressure compression moulding of 150MPa pressure base substrate, base substrate is behind 180 ℃ of dry 24h, 1700 ℃ of the shuttle kilns of packing into burn till, and namely get high-purity heavy zirconia refractory product.This goods apparent porosity 20%, volume density 4.4g/cm
3, ZrO
2+ HfO
2+ Y
2O
3=99.70wt%, meta aperture 8mm, mean pore size 4mm, use temperature reaches more than 2400 ℃.
Embodiment 4:
Take by weighing electric smelting calcium PSZ particle (stablizing rate 60%) granularity 0.5mm～1mm 1kg, granularity 0.35mm～0.5mm 3kg, granularity 0.15mm～0.35mm 2kg, premix 2min in simpson mill, add aqueous resin solution 0.5kg, continue to stir 3min, again to wherein adding electric smelting calcium PSZ fine powder (stablizing rate 75%) 30um～74um 1kg, 74um～150um1kg, monoclinic zirconia micro mist 0.5um～6um 2kg, stirring is mixed behind the 10min, after pack in the wooden die, vibration pressurization ramming process base substrate, base substrate is behind 180 ℃ of dry 12h, 1650 ℃ of the shuttle kilns of packing into burn till, and namely get high-purity heavy zirconia refractory product.This goods apparent porosity 27%, volume density 4.2g/cm
3, ZrO
2+ HfO
2+ CaO=99.55wt%, meta aperture 12mm, mean pore size 7mm, use temperature reaches more than 2300 ℃.
Embodiment 5:
Take by weighing electric smelting calcium yttrium composite portion stabilizing zirconia particle (stablizing rate 85%) granularity 0.5mm～1mm 1.5kg, granularity 0.35mm～0.5mm 3kg, granularity 0.15mm～0.35mm 2kg, premix 2min in simpson mill, the polyvinyl alcohol water solution 0.35kg of adding 6%, continue to stir 3min, again to wherein adding electric smelting calcium yttrium composite portion stabilizing zirconia fine powder (stablizing rate 85%) 30um～74um1kg, 74um～150um 1kg, monoclinic zirconia micro mist 0.5um～6um 1.5kg, stirring is mixed behind the 10min, after pack in the steel die, vibration pressurization ramming process base substrate, base substrate is behind 180 ℃ of dry 12h, pack in the electric furnace 1650 ℃ and burn till, namely get high-purity heavy zirconia refractory product.This goods apparent porosity 20%, volume density 4.5g/cm
3, ZrO
2+ HfO
2+ CaO+Y
2O
3=99.05wt%, meta aperture 10mm, mean pore size 6mm, use temperature reaches more than 2300 ℃.
Embodiment 6:
Take by weighing electric smelting calcium yttrium stable composition zirconia particles (stablizing rate 85%) granularity 0.5mm～1mm1kg, granularity 0.35mm～0.5mm 3kg, granularity 0.15mm～0.35mm 2kg, premix 2min in simpson mill, add resol spirituous solution 0.5kg, continue to stir 3min, again to wherein adding electric smelting calcium PSZ fine powder (stablizing rate 75%) 30um～74um 1kg, 74um～150um 1kg, monoclinic zirconia micro mist 0.5um～6um 2kg, stirring is mixed behind the 10min, after pack in the wooden die, vibration pressurization ramming process base substrate, base substrate is behind 110 ℃ of dry 12h, 1750 ℃ of the shuttle kilns of packing into burn till, and namely get high-purity heavy zirconia refractory product.This goods apparent porosity 23%, volume density 4.3g/cm
3, ZrO
2+ HfO
2+ CaO+Y
2O
3=98.65wt%, meta aperture 12mm, mean pore size 7mm, use temperature reaches more than 2200 ℃.
Embodiment 7:
Take by weighing electric smelting calcium PSZ particle (stablizing rate 75%) granularity 0.5mm～1mm 1kg, granularity 0.35mm～0.5mm 2kg, granularity 0.15mm～0.35mm 3kg, premix 3min in the high speed muller, add resol spirituous solution 0.35kg, continue high-speed stirring 5min, again to wherein adding electric smelting calcium PSZ fine powder (stablizing rate 75%) 30um～74um 1kg, 74um～150um 1kg, monoclinic zirconia micro mist 0.5um～10um 2kg, behind the high-speed stirring 10min, sieve, pack into after the drying in the mould that is consisted of by steel core and rubber coating, the inferior static pressure compression moulding of 150MPa pressure base substrate, base substrate is behind 180 ℃ of dry 36h, 1800 ℃ of the shuttle kilns of packing into burn till, and namely get high-purity heavy zirconia refractory product.This goods apparent porosity 22%, volume density 4.4g/cm
3, ZrO
2+ HfO
2+ CaO=99.60wt%, meta aperture 6mm, mean pore size 3mm, use temperature reaches more than 2300 ℃.
Embodiment 8:
Take by weighing electric molten magnesite PSZ particle (stablizing rate 70%) granularity 0.5mm～1mm1.5kg, granularity 0.35mm～0.5mm 3kg, granularity 0.15mm～0.35mm 2kg, premix 2min in simpson mill, add aqueous resin solution 0.3kg, continue to stir 3min, again to wherein adding electric molten magnesite PSZ fine powder (stablizing rate 70%) 30um～74um 1kg, 74um～150um 1kg, monoclinic zirconia micro mist 0.5um～10um 1.5kg, behind the high-speed stirring 10min, sieve, pack into after the drying in the mould that is consisted of by steel core and rubber coating, the inferior static pressure compression moulding of 150MPa pressure base substrate, base substrate is behind 180 ℃ of dry 24h, 1630 ℃ on the electric furnace of packing into burns till, and namely gets high-purity heavy zirconia refractory product.This goods apparent porosity 20%, volume density 4.4g/cm
3, ZrO
2+ HfO
2+ MgO=98.86wt%, meta aperture 10mm, mean pore size 7mm, use temperature reaches more than 2300 ℃.
Embodiment 9:
Take by weighing the yttrium partially stabilized zirconia particles of electric smelting (stablizing rate 85%) granularity 0.5mm～1mm 1kg, granularity 0.35mm～0.5mm 3kg, granularity 0.15mm～0.35mm 3kg, premix 2min in simpson mill, add polyvinyl alcohol solution 0.3kg, continue to stir 3min, again to wherein adding the yttrium partially stabilized powdered zirconium oxide of electric smelting (stablizing rate 85%) 30um～74um 1kg, 74um～150um0.5kg, monoclinic zirconia micro mist 0.5um～10um 1.5kg, behind the high-speed stirring 10min, sieve, pack into after the drying in the mould that is consisted of by steel core and rubber coating, the inferior static pressure compression moulding of 200MPa pressure base substrate, base substrate is behind 180 ℃ of dry 12h, 1680 ℃ on the electric furnace of packing into burns till, and namely gets high-purity heavy zirconia refractory product.This goods apparent porosity 20%, volume density 4.4g/cm
3, ZrO
2+ HfO
2+ Y
2O
3=99.86wt%, meta aperture 10mm, mean pore size 6mm, use temperature reaches more than 2400 ℃.
Embodiment 10:
Take by weighing electric smelting calcium PSZ particle (stablizing rate 75%) granularity 0.5mm～1mm 1kg, granularity 0.35mm～0.5mm 2.5kg, granularity 0.15mm～0.35mm 3kg, premix 3min in the high speed muller, add water-base resin 0.35kg, continue high-speed stirring 5min, again to wherein adding electric smelting calcium PSZ fine powder (stablizing rate 75%) 30um～74um 1kg, 74um～150um1kg, monoclinic zirconia micro mist 0.5um～6um 1.5kg, behind the high-speed stirring 10min, sieve, pack into after the drying in the mould that is consisted of by steel core and rubber coating, the inferior static pressure compression moulding of 150MPa pressure base substrate, base substrate is behind 180 ℃ of dry 12h, 1700 ℃ of the shuttle kilns of packing into burn till, and namely get high-purity heavy zirconia refractory product.This goods apparent porosity 25%, volume density 4.3g/cm
3, ZrO
2+ HfO
2+ CaO=99.62wt%, meta aperture 8mm, mean pore size 5mm, use temperature reaches more than 2300 ℃.
Embodiment 11:
Take by weighing electric smelting calcium PSZ particle (stablizing rate 60%) granularity 0.5mm～1mm1.5kg, take by weighing electric molten magnesite yttrium composite portion stabilizing zirconia grain graininess (stablizing rate 85%) 0.35mm～0.5mm 3kg, granularity 0.15mm～0.35mm 2kg, premix 2min in simpson mill, add polyvinyl alcohol solution 0.3kg, continue to stir 3min, again to wherein adding the yttrium partially stabilized powdered zirconium oxide of electric smelting (stablizing rate 85%) 30um～74um 1.5kg, 74um～150um 0.5kg, monoclinic zirconia micro mist 0.5um～10um 1.5kg, stirring is mixed behind the 10min, pack in the steel die, vibration extrusion forming base substrate, base substrate is behind 110 ℃ of dry 12h, 1680 ℃ on the electric furnace of packing into burns till, and namely gets high-purity heavy zirconia refractory product.This goods apparent porosity 23%, volume density 4.25g/cm
3, ZrO
2+ HfO
2+ CaO+MgO+Y
2O
3=99.16wt%, meta aperture 7mm, mean pore size 4mm, use temperature reaches more than 2300 ℃.
Embodiment 12:
Take by weighing electric smelting calcium PSZ particle (stablizing rate 60%) granularity 0.5mm～1mm 2kg, take by weighing electric molten magnesite yttrium composite portion stabilizing zirconia grain graininess (stablizing rate 85%) 0.35mm～0.5mm 3kg, granularity 0.15mm～0.35mm 1.5kg, premix 2min in simpson mill, add polyvinyl alcohol solution 0.3kg, continue to stir 3min, again to wherein adding the yttrium partially stabilized powdered zirconium oxide of electric molten magnesite (stablizing rate 85%) 30um～74um 1.5kg, 74um～150um 0.5kg, monoclinic zirconia micro mist 0.5um～10um 1.5kg, stirring is mixed behind the 10min, pack in the steel die, vibration extrusion forming base substrate, base substrate is behind 150 ℃ of dry 24h, 1750 ℃ on the electric furnace of packing into burns till, and namely gets high-purity heavy zirconia refractory product.This goods apparent porosity 20%, volume density 4.4g/cm
3, ZrO
2+ HfO
2+ CaO+MgO+Y
2O
3=99.03wt%, meta aperture 6mm, mean pore size 4mm, use temperature reaches more than 2300 ℃.
Embodiment 13:
Take by weighing electric smelting calcium PSZ particle (stablizing rate 60%) granularity 0.5mm～1mm 1kg, take by weighing electric molten magnesite yttrium composite portion stabilizing zirconia grain graininess (stablizing rate 85%) 0.35mm～0.5mm 2kg, granularity 0.15mm～0.35mm 4kg, premix 2min in simpson mill, add polyvinyl alcohol solution 0.3kg, continue to stir 3min, again to wherein adding the yttrium partially stabilized powdered zirconium oxide of electric molten magnesite (stablizing rate 85%) 30um～74um 1.5kg, 74um～150um 0.5kg, monoclinic zirconia micro mist 0.5um～10um 1kg, stirring is mixed behind the 10min, pack in the steel die, vibration extrusion forming base substrate, base substrate is behind 110 ℃ of dry 12h, 1750 ℃ on the electric furnace of packing into burns till, and namely gets high-purity heavy zirconia refractory product.This goods apparent porosity 22%, volume density 4.3g/cm
3, ZrO
2+ HfO
2+ CaO+MgO+Y
2O
3=99.15wt%, meta aperture 7mm, mean pore size 4mm, use temperature reaches more than 2300 ℃.
Embodiment 14:
Take by weighing electric molten magnesite PSZ particle (stablizing rate 70%) granularity 0.5mm～1mm 2kg, granularity 0.35mm～0.5mm 2kg, granularity 0.15mm～0.35mm 3kg, premix 2min in simpson mill, add aqueous resin solution 0.3kg, continue to stir 3min, again to wherein adding electric molten magnesite PSZ fine powder (stablizing rate 70%) 30um～74um 1kg, 74um～150um1kg, monoclinic zirconia micro mist 0.5um～10um 1kg, behind the high-speed stirring 10min, sieve, pack into after the drying in the mould that is consisted of by steel core and rubber coating, the inferior static pressure compression moulding of 150MPa pressure base substrate, base substrate is behind 180 ℃ of dry 12h, 1630 ℃ on the electric furnace of packing into burns till, and namely gets high-purity heavy zirconia refractory product.This goods apparent porosity 23%, volume density 4.25g/cm
3, ZrO
2+ HfO
2+ MgO=99.02wt%, meta aperture 8mm, mean pore size 6mm, use temperature reaches more than 2300 ℃.
Claims (3)
1. high-purity heavy zirconia refractory product, ZrO in these goods
2Content 〉=98wt%, described ZrO
2Content comprise stablizer; It is characterized in that: described refractory product raw material is to be that the monoclinic zirconia micro mist of 0.5 μ m～10 μ m consists of by 60%～70% PSZ particle, 15%～20% PSZ fine powder, 10%～20% size range; And adding organic bond; Described percentage ratio is mass percent; Described PSZ particle refers to that the stable phase content that is made of Tetragonal and Emission in Cubic is at 60%～85% electric-melting zirconia raw material, its grain graininess scope is 0.15mm～1mm, wherein, the zirconium white of granularity 0.5mm～1mm, granularity 0.35mm～0.5mm, granularity 0.15mm～0.35mm accounts for respectively 10%～20%, 20%～30%, 20%～40% of raw material total mass; Described PSZ fine powder refers to the stable phase content that is made of Tetragonal and Emission in Cubic at 60%～85% electric-melting zirconia raw material, and described PSZ powder particle size scope is 30 μ m～150 μ m; Described organic bond is a kind of in resol spirituous solution, the polyvinyl alcohol water solution, and add-on accounts for 3%～5% of whole raw material total mass; In the preparation of described refractory product, the molding mode of base substrate is for waiting static pressure or vibration pressurization ramming process, at first with zirconia particles, powdered zirconium oxide, monoclinic zirconia micro mist, organic bond mixing and stirring, sieve, in the mould of packing into after the drying, wait static pressure or vibration pressurization ramming process base substrate, pressure is 150MPa～180MPa during the isostatic pressing base substrate, base substrate, after 110 ℃～180 ℃ dryings, 1630 ℃～1800 ℃ are burnt till, and namely get high-purity heavy zirconia refractory product.
2. a kind of high-purity heavy zirconia refractory product according to claim 1, it is characterized in that: the PSZ particle refers to electrically molten magnesia PSZ particle, electric smelting calcium oxide PSZ particle, electro-melting yttrium oxide PSZ particle, electric smelting calcium yttrium composite portion stabilizing zirconia particle, electric molten magnesite yttrium composite portion stabilizing zirconia particle or the combination in them.
3. a kind of high-purity heavy zirconia refractory product according to claim 1, it is characterized in that: the PSZ fine powder refers to electrically molten magnesia PSZ fine powder, electric smelting calcium oxide PSZ fine powder, electro-melting yttrium oxide PSZ fine powder, electric smelting calcium yttrium composite portion stabilizing zirconia fine powder, electric molten magnesite yttrium composite portion stabilizing zirconia fine powder.
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| CN103553653B (en) * | 2013-10-14 | 2015-09-16 | 中钢集团洛阳耐火材料研究院有限公司 | A kind of high-purity zirconia refractory product and preparation method with gradient function |
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| CN103936442A (en) * | 2014-04-02 | 2014-07-23 | 上海宝威陶瓷新材料有限公司 | Composition and preparation method of magnesium-yttrium-calcium compound stabilized zirconia nozzle brick |
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| CN109400191A (en) * | 2018-12-10 | 2019-03-01 | 中钢集团洛阳耐火材料研究院有限公司 | A kind of high-purity zirconia heat insulation refractory product |
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| CN112573919A (en) * | 2020-12-30 | 2021-03-30 | 巩义市新科耐火材料有限公司 | Production method of zirconia brick for ultra-high temperature carbon black furnace |
| CN115231931B (en) * | 2022-07-20 | 2023-06-27 | 郑州振中电熔新材料有限公司 | Method for manufacturing high-quality zirconia nozzle by using magnesia-zirconia eutectic material and monoclinic zirconia |
| CN116675545A (en) * | 2023-06-02 | 2023-09-01 | 中钢集团洛阳耐火材料研究院有限公司 | Preparation method of corrosion-penetration-resistant high-purity zirconia refractory product |
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