WO2008104354A1 - Schmelzgegossenes feuerfestes erzeugnis - Google Patents
Schmelzgegossenes feuerfestes erzeugnis Download PDFInfo
- Publication number
- WO2008104354A1 WO2008104354A1 PCT/EP2008/001488 EP2008001488W WO2008104354A1 WO 2008104354 A1 WO2008104354 A1 WO 2008104354A1 EP 2008001488 W EP2008001488 W EP 2008001488W WO 2008104354 A1 WO2008104354 A1 WO 2008104354A1
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- WIPO (PCT)
- Prior art keywords
- product
- magnesium oxide
- melt
- zirconium dioxide
- containing crystal
- Prior art date
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- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims abstract description 69
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims abstract description 36
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 67
- 239000000395 magnesium oxide Substances 0.000 claims description 67
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 66
- 239000013078 crystal Substances 0.000 claims description 38
- 229910052839 forsterite Inorganic materials 0.000 claims description 9
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 claims description 9
- 229910002076 stabilized zirconia Inorganic materials 0.000 claims description 4
- 229910052878 cordierite Inorganic materials 0.000 claims description 3
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052634 enstatite Inorganic materials 0.000 claims description 3
- BBCCCLINBSELLX-UHFFFAOYSA-N magnesium;dihydroxy(oxo)silane Chemical compound [Mg+2].O[Si](O)=O BBCCCLINBSELLX-UHFFFAOYSA-N 0.000 claims description 3
- 229910052596 spinel Inorganic materials 0.000 claims description 3
- 239000011029 spinel Substances 0.000 claims description 3
- 239000000047 product Substances 0.000 description 62
- 239000002994 raw material Substances 0.000 description 21
- 238000004519 manufacturing process Methods 0.000 description 13
- 230000006641 stabilisation Effects 0.000 description 11
- 238000011105 stabilization Methods 0.000 description 11
- 229910004298 SiO 2 Inorganic materials 0.000 description 8
- 239000011521 glass Substances 0.000 description 8
- 230000004048 modification Effects 0.000 description 8
- 238000012986 modification Methods 0.000 description 8
- 238000001816 cooling Methods 0.000 description 7
- 239000012535 impurity Substances 0.000 description 6
- 239000000155 melt Substances 0.000 description 6
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
- 229910001928 zirconium oxide Inorganic materials 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000000292 calcium oxide Substances 0.000 description 2
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- CJNBYAVZURUTKZ-UHFFFAOYSA-N hafnium(iv) oxide Chemical compound O=[Hf]=O CJNBYAVZURUTKZ-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- -1 MgSiOa) Chemical compound 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229910052849 andalusite Inorganic materials 0.000 description 1
- 230000002547 anomalous effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910000420 cerium oxide Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000010952 in-situ formation Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 1
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910052851 sillimanite Inorganic materials 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- FKHIFSZMMVMEQY-UHFFFAOYSA-N talc Chemical compound [Mg+2].[O-][Si]([O-])=O FKHIFSZMMVMEQY-UHFFFAOYSA-N 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 229910001735 zirconium mineral Inorganic materials 0.000 description 1
Classifications
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- 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
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/48—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on zirconium or hafnium oxides, zirconates, zircon or hafnates
- C04B35/484—Refractories by fusion casting
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3206—Magnesium oxides or oxide-forming salts thereof
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3208—Calcium oxide or oxide-forming salts thereof, e.g. lime
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- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
- C04B2235/3222—Aluminates other than alumino-silicates, e.g. spinel (MgAl2O4)
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
- C04B2235/3225—Yttrium oxide or oxide-forming salts thereof
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- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
- C04B2235/3229—Cerium oxides or oxide-forming salts thereof
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- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3418—Silicon oxide, silicic acids or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
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- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3427—Silicates other than clay, e.g. water glass
- C04B2235/3436—Alkaline earth metal silicates, e.g. barium silicate
- C04B2235/3445—Magnesium silicates, e.g. forsterite
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- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3427—Silicates other than clay, e.g. water glass
- C04B2235/3463—Alumino-silicates other than clay, e.g. mullite
- C04B2235/3481—Alkaline earth metal alumino-silicates other than clay, e.g. cordierite, beryl, micas such as margarite, plagioclase feldspars such as anorthite, zeolites such as chabazite
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/72—Products characterised by the absence or the low content of specific components, e.g. alkali metal free alumina ceramics
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/80—Phases present in the sintered or melt-cast ceramic products other than the main phase
Definitions
- the invention relates to a fused cast refractory product based on zirconium dioxide.
- zirconium dioxide Due to its good corrosion resistance, zirconium dioxide (ZrO 2 ) is excellently suited for the production of refractory products.
- zirconia-based refractory products are, for example, in the steel casting sector, where corresponding products are used as continuous casting nozzles, slide plates and as wearing parts in particularly heavily stressed areas.
- Glass tanks use zirconia fused cast refractory products. Zirconia occurs in three modifications. At cryogenic temperature is zirconium dioxide present in a monoclinic modification, which undergoes a reversible transformation into a tetragö 'tional modification at about 1 170 0 C. At about 2300 ° C., a further reversible conversion into a cubic modification of the zirconium dioxide takes place.
- zirconia-based refractory products by addition of oxides, in particular the oxides magnesium oxide (MgO), calcium oxide (CaO), yttrium oxide (Y 2 O 3 ) or oxides of other rare earths, for example cerium oxide (CeO 2 ). to stabilize.
- oxides in particular the oxides magnesium oxide (MgO), calcium oxide (CaO), yttrium oxide (Y 2 O 3 ) or oxides of other rare earths, for example cerium oxide (CeO 2 ).
- stabilization has the disadvantage of being lost in use of the product.
- the oxide used for stabilization migrates into the attacking environment, such as the melt of glass or slag, resulting in a reduction in the volume of the product. This reduction in volume increases the corrosive attack on the refractory product.
- Stabilization is not possible in the case of melt-cast products containing zirconium oxide, since these products contain, in addition to zirconium oxide, a glass phase into which the oxide used for stabilization migrates. For this reason, stabilization of the zirconia to reduce the risk of cracking in the production of zirconia fused cast refractory products is currently not performed. Instead, the change in volume occurring in the zirconium dioxide product in the case of melt-molded products when the transition temperatures are exceeded or fallen below is currently buffered via the glass phase.
- the zirconia is embedded in melt-molded products in a silica-rich glass phase, which acts as a buffer for the modification changes of the zirconium dioxide during heating and cooling.
- the glass phase is unable to adequately buffer the changes in volume during heating and cooling of the zirconia-based product, such that, in particular, during production of the product, cracks occur which, in use, can cause the product to chip.
- the content of glass phase in the product plays a significant role in its wear.
- the object of the invention is to provide a fused cast refractory product based on zirconium dioxide with improved corrosion and wear properties. Furthermore, the invention has for its object to suppress the formation of dispersed bubbles distributed during the cooling of the zirconia melt.
- this object is achieved by the provision of a fused cast refractory product based on zirconium dioxide, wherein the zirconium dioxide crystals are stabilized by magnesium oxide and surrounded by at least one magnesium oxide-containing crystal phase.
- the invention is based on the fundamental idea, in contrast to the prior art, of achieving stabilization of the zirconium dioxide by addition of magnesium oxide (MgO) even in fused cast products based on zirconium dioxide.
- MgO magnesium oxide
- This stabilization of the zirconium dioxide by the addition of magnesium oxide is achieved by the knowledge according to the invention that the migration of magnesium oxide used for stabilization into the attacking environment can be slowed down or even practically prevented since the zirconia crystals stabilized by magnesium oxide are embedded in at least one magnesium oxide-containing crystal phase surrounded by this crystal phase.
- the slowed out migration of the zirconia stabilizing magnesium oxide results from the reduction in the concentration gradient between the stabilized zirconia and the adjacent crystal phase.
- the magnesium oxide-containing crystal phase thus surrounds the zirconium dioxide crystals stabilized by the MgO and thus supports the stabilization of the zirconium dioxide or maintains this stabilization.
- the zirconia-based fused cast refractory product according to the application thus has substantially improved corrosion and wear properties compared with the fused cast products based on zirconium dioxide known from the prior art. The tendency to crack on the product during cooling of the melt can be significantly reduced.
- the product according to the application can be provided almost or even virtually completely free of dispersedly distributed voids. This is a consequence of an extremely favorable crystallization behavior of the product according to the application, which is presumably based on the smaller melting interval of the system according to the application (MgO-stabilized ZrO 2 - magnesium oxide-containing crystal phase) compared to the conventional systems (ZrO 2 -SiO 2 ).
- the MgO-stabilized zirconia crystals are preferably surrounded by at least one of the following magnesium oxide-containing crystal phases: forsterite (Mg 2 SiO 2 , enstatite (magnesium metasilicate, MgSiOa), cordierite (2 MgO • 2Al 2 O 3 • 5SiO 2 ) or spinel (MgO • Al 2 O 3 ).
- forsterite Mg 2 SiO 2
- enstatite magnesium metasilicate, MgSiOa
- cordierite 2 MgO • 2Al 2 O 3 • 5SiO 2
- spinel MgO • Al 2 O 3
- the magnesium oxide-containing crystal phase surrounding the stabilized zirconia crystals in the product according to the application is not Crystal phase based on MgO and ZrO 2 .
- Forsterite exhibits a particularly advantageous effect in the product according to the application, so that in the melt-cast refractory product according to the application the stabilized zirconium dioxide crystals are preferably surrounded by a crystalline phase of forsterite.
- the formation of the magnesium oxide-containing crystal phases in the product according to the application preferably takes place in situ during its production, that is to say in particular during cooling after melting. In this way, it is possible to influence the formation of the magnesium oxide-containing crystal phases specifically by the nature and amount of the raw material components.
- raw material components are specifically selected for the production of the product according to the application, which on the one hand cause the MgO stabilization of the zirconium dioxide and on the other to form a magnesium oxide-containing crystal phase around the Zirkondioxidkristalle lead.
- At least one further raw material component (hereinafter also referred to as "further raw material component") which forms a magnesium oxide-containing crystal phase with a portion of the MgO raw material component.
- the further raw material component is added in such an amount that it completely forms a magnesium oxide-containing crystal phase with a part of the MgO raw material component during the production of the product according to the application.
- the remaining part of the MgO raw material component stabilizes the ZrO 2 .
- a further raw material component in the form of SiO 2 can be selected.
- a first further raw material component in the form of Al 2 Os and a second further raw material component in the form of S1O 2 can be selected.
- a further component containing both Al 2 O 3 and SiO 2 can be selected, for example sillimanite or andalusite.
- a further raw material component in the form of Al 2 O 3 can be selected.
- the proportions of the various components in the product according to the application may, for example, be as follows, the data being given in% by weight (% by mass) and based on the total mass of the product.
- the proportion of the magnesium oxide-containing crystal phase can, for example > 0.5%, ie for example>1%,> 1, 5% or> 2%.
- the upper limit of the proportion of magnesium oxide-containing Krisjall phase can be, for example, ⁇ 10%, that is, for example, also ⁇ 8%, ⁇ 6%, ⁇ 5% or ⁇ 4%.
- the proportion of magnesium oxide-containing crystal phase may for example be 0.5 to 10%, that is, for example, 1 to 8%, 1 to 6%, 2 to 5% or 2 to 4%.
- the fused cast product based on stabilized zirconium dioxide according to the application is preferably a product containing high zirconium oxide (HZFC product).
- the proportion of zirconium dioxide may, for example, be> 70%, that is to say for example> 80%,> 85% or> 90%. With regard to its maximum proportion, the proportion of zirconium dioxide, for example, at
- ⁇ 98% so for example, ⁇ 97%, ⁇ 96% or
- the proportion of zirconium dioxide may be, for example, 70 to 98%, that is, for example, 80 to 98%, 85 to 97%, 90 to 96% or 90 to 95%.
- the proportion of MgO in the product according to the application can be, for example,> 0.5%, that is, for example, also> 1% or> 2%.
- the MgO can be present, for example, in maximum proportions of ⁇ 10%, that is to say, for example, also in proportions of ⁇ 8%, of ⁇ 6% or of ⁇ 4%.
- MgO can be present in the product according to the application, for example in proportions of 0.5 to 10%, that is to say for example in proportions of 1 to 10%, of 2 to 8%, of 2 to 6% or of 2 to 4%.
- the above proportion of MgO is partly present in the product according to the application for stabilizing the zirconium dioxide and partly in the magnesium oxide-containing crystal phase.
- the proportion of MgO serving to stabilize the zirconium dioxide can be greater than the proportion of MgO in the magnesium oxide-containing crystal phase. It can be provided according to the application that the ratio of the proportion of MgO, which serves to stabilize the ZrO 2 , to the proportion of MgO in the magnesium oxide-containing crystal phase at 6/5 to 15/1, that is, for example, at 3/2 to 7 / 1 lies.
- further oxides may be present in the product for stabilizing the zirconium dioxide, for example one or more of the oxides CaO, Y 2 O 3 or CeO 2 , for example in proportions of from 0.5 to 5%, ie for example in proportions of from 0.5 to 3%. ,
- the product according to the application may contain impurities, for example Fe 2 Oa, TiO 2 or CaO. These impurities may have been supplied to the product, for example via contaminated raw materials, for example contaminated baddeleyite as a raw material component for the zirconium dioxide.
- the product according to the application can also have impurities in the form of HfO 2 (hafnium dioxide), since natural zirconium minerals, in particular baddeleyite, generally have 1 to 5% HfO 2 .
- the proportion of impurities is preferably ⁇ 5%, that is, for example, also ⁇ 3%, ⁇ 2% or ⁇ 1%.
- Two exemplary compositions of a fused cast refractory product according to the invention are as follows:
- This product has a forsterite content of 2%.
- the forsterite is composed of the complete amount of SiO 2 and 0.6% MgO.
- the remaining 4.0% MgO serve to stabilize the ZrO 2 .
- This product has a 4% share of forsterite.
- the forsterite is composed of the complete amount of SiO 2 and 1, 2% MgO. The remaining 2.0% MgO serve to stabilize the ZrO 2 .
- a product in accordance with the application can be created by the following procedure:
- the raw materials zirconium dioxide, magnesium oxide and at least one other component, which together with a portion of the magnesium oxide during the Manufacturing process forms a magnesium oxide-containing crystal phase, are first mixed.
- the amounts of raw materials are coordinated so that the other component is completely consumed during the manufacturing process with a portion of the magnesium oxide component to form a magnesium oxide-containing crystal phase.
- the mixture of raw materials is then melted in an electric arc furnace under oxidizing conditions.
- melt is poured into molds or allowed to solidify as a block for the production of granular material.
- the melt is removed from the molds and the product thus obtained, after appropriate mechanical processing (eg., By drilling, grinding, sawing), for example, for the delivery of glass furnaces are used, for example as Palisadenstein.
- mechanical processing eg., By drilling, grinding, sawing
- the block-solidified melt can be used, for example, for the production of granular material, which can serve, for example, as a granulated raw material for the production of ceramic-bound zirconia stones, other zirconia-containing stones or unshaped zirconia-containing products.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Composite Materials (AREA)
- Organic Chemistry (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Processing Of Solid Wastes (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Mold Materials And Core Materials (AREA)
- Furnace Charging Or Discharging (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08716031A EP2129636B9 (de) | 2007-02-28 | 2008-02-26 | Schmelzgegossenes feuerfestes erzeugnis |
DE502008001321T DE502008001321D1 (de) | 2007-02-28 | 2008-02-26 | Schmelzgegossenes feuerfestes erzeugnis |
CN200880006608.8A CN101622209B (zh) | 2007-02-28 | 2008-02-26 | 耐火的熔融浇铸制品 |
JP2009551122A JP5149312B2 (ja) | 2007-02-28 | 2008-02-26 | 溶融鋳込耐火物用生成物 |
AT08716031T ATE481368T1 (de) | 2007-02-28 | 2008-02-26 | Schmelzgegossenes feuerfestes erzeugnis |
US12/524,708 US7989381B2 (en) | 2007-02-28 | 2008-02-26 | Fusion-cast fireproof product |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007010173.4 | 2007-02-28 | ||
DE102007010173A DE102007010173B4 (de) | 2007-02-28 | 2007-02-28 | Schmelzgegossenes feuerfestes Erzeugnis |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008104354A1 true WO2008104354A1 (de) | 2008-09-04 |
Family
ID=39400897
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2008/001488 WO2008104354A1 (de) | 2007-02-28 | 2008-02-26 | Schmelzgegossenes feuerfestes erzeugnis |
Country Status (8)
Country | Link |
---|---|
US (1) | US7989381B2 (de) |
EP (1) | EP2129636B9 (de) |
JP (1) | JP5149312B2 (de) |
CN (1) | CN101622209B (de) |
AT (1) | ATE481368T1 (de) |
DE (2) | DE102007010173B4 (de) |
RU (1) | RU2440953C2 (de) |
WO (1) | WO2008104354A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102241522A (zh) * | 2010-05-13 | 2011-11-16 | 郑州振中电熔锆业有限公司 | 镁稳定二氧化锆的电熔制造方法 |
PL2975010T3 (pl) * | 2014-07-14 | 2017-01-31 | Refractory Intellectual Property Gmbh & Co. Kg | Ditlenek cyrkonu, zastosowanie ditlenku cyrkonu i sposób wytwarzania wyrobu ogniotrwałego |
RU2672972C2 (ru) * | 2017-05-11 | 2018-11-21 | Открытое акционерное общество "Первоуральский динасовый завод" (ОАО "ДИНУР") | Способ получения чистого от углерода и карбидов плавленого диоксида циркония |
CN107162590A (zh) * | 2017-05-25 | 2017-09-15 | 三祥新材股份有限公司 | 一种电熔法生产镁稳定锆的方法 |
PL3511307T3 (pl) * | 2018-01-16 | 2020-11-30 | Refractory Intellectual Property Gmbh & Co. Kg | Surowiec topiony do wytwarzania wyrobu ogniotrwałego, sposób wytwarzania surowca topionego oraz zastosowanie surowca topionego |
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EP0460959A2 (de) * | 1990-06-07 | 1991-12-11 | Japan Abrasive Co., Ltd. | Feuerfesterzeugnisse aus geschmolzenem Zirkoniumoxid von hoher Temperatur- und Korrosionsbeständigkeit und Verfahren zu ihrer Herstellung |
EP0633232A1 (de) | 1993-07-08 | 1995-01-11 | Japan Abrasive Co., Ltd. | Feuerfeste Materialien aus geschmolzenem Zirconium, Verfahren zu ihrer Herstellung und feuerfeste Erzeugnisse daraus |
FR2723583A1 (fr) * | 1994-08-10 | 1996-02-16 | Toshiba Monofrax | Refractaires fondus a haute teneur en zircone |
JP2004099441A (ja) * | 2003-11-25 | 2004-04-02 | Saint-Gobain Tm Kk | 高ジルコニア溶融耐火物 |
WO2004048290A1 (de) * | 2002-11-22 | 2004-06-10 | Refractory Intellectual Property Gmbh & Co. Kg | Feuerfester keramischer formkörper |
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FR952855A (fr) * | 1942-01-29 | 1949-11-25 | Electro Refractaire | Réfractaire basique moulé |
DE1170305B (de) * | 1958-07-08 | 1964-05-14 | Electro Refractaire | Verfahren zur Herstellung eines feuerfesten, geschmolzenen, in Formen gegossenen und praktisch keine Waermedehnungsanomalie aufweisenden Zirkonoxyderzeugnisses |
FR2320276A1 (fr) | 1975-08-06 | 1977-03-04 | Prod Refractaires Europ | Billes ameliorees en matiere ceramique |
US4294795A (en) * | 1978-06-12 | 1981-10-13 | Kureha Kagaku Kogyo Kabushiki Kaisha | Stabilized electrocast zirconia refractories |
US4880757A (en) * | 1986-01-24 | 1989-11-14 | The Dow Chemical Company | Chemical preparation of zirconium-aluminum-magnesium oxide composites |
JP2706730B2 (ja) * | 1989-03-16 | 1998-01-28 | 東京窯業株式会社 | 耐火材料 |
JPH0397670A (ja) * | 1989-09-07 | 1991-04-23 | Toshiba Ceramics Co Ltd | マグネシア部分安定化ジルコニア |
JPH0737344B2 (ja) * | 1990-11-28 | 1995-04-26 | ハリマセラミック株式会社 | 塩基性質不定形耐火物 |
JP2603397B2 (ja) * | 1992-04-03 | 1997-04-23 | 品川白煉瓦株式会社 | 耐火材料 |
JP3518560B2 (ja) * | 1994-08-10 | 2004-04-12 | サンゴバン・ティーエム株式会社 | 高ジルコニア溶融耐火物 |
US6723672B1 (en) * | 1999-01-26 | 2004-04-20 | Carpenter Advanced Ceramics, Inc. | High-strength magnesia partially stabilized zirconia |
PL349875A1 (en) * | 1999-01-26 | 2002-09-23 | Carpenter Advanced Ceramics | High-strength magnesia partially stabilized zirconia |
CN1207246C (zh) * | 2001-11-21 | 2005-06-22 | 郑州振中电熔锆业有限公司 | 电熔锆酸钙的生产方法 |
FR2836682B1 (fr) * | 2002-03-01 | 2005-01-28 | Saint Gobain Ct Recherches | Produit refractaire fondu et coule a forte teneur en zircone |
-
2007
- 2007-02-28 DE DE102007010173A patent/DE102007010173B4/de not_active Expired - Fee Related
-
2008
- 2008-02-26 US US12/524,708 patent/US7989381B2/en not_active Expired - Fee Related
- 2008-02-26 RU RU2009129877/03A patent/RU2440953C2/ru not_active IP Right Cessation
- 2008-02-26 EP EP08716031A patent/EP2129636B9/de not_active Not-in-force
- 2008-02-26 AT AT08716031T patent/ATE481368T1/de active
- 2008-02-26 CN CN200880006608.8A patent/CN101622209B/zh not_active Expired - Fee Related
- 2008-02-26 WO PCT/EP2008/001488 patent/WO2008104354A1/de active Application Filing
- 2008-02-26 DE DE502008001321T patent/DE502008001321D1/de active Active
- 2008-02-26 JP JP2009551122A patent/JP5149312B2/ja not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0460959A2 (de) * | 1990-06-07 | 1991-12-11 | Japan Abrasive Co., Ltd. | Feuerfesterzeugnisse aus geschmolzenem Zirkoniumoxid von hoher Temperatur- und Korrosionsbeständigkeit und Verfahren zu ihrer Herstellung |
EP0633232A1 (de) | 1993-07-08 | 1995-01-11 | Japan Abrasive Co., Ltd. | Feuerfeste Materialien aus geschmolzenem Zirconium, Verfahren zu ihrer Herstellung und feuerfeste Erzeugnisse daraus |
FR2723583A1 (fr) * | 1994-08-10 | 1996-02-16 | Toshiba Monofrax | Refractaires fondus a haute teneur en zircone |
WO2004048290A1 (de) * | 2002-11-22 | 2004-06-10 | Refractory Intellectual Property Gmbh & Co. Kg | Feuerfester keramischer formkörper |
JP2004099441A (ja) * | 2003-11-25 | 2004-04-02 | Saint-Gobain Tm Kk | 高ジルコニア溶融耐火物 |
Also Published As
Publication number | Publication date |
---|---|
EP2129636B9 (de) | 2011-01-26 |
CN101622209B (zh) | 2012-10-24 |
JP5149312B2 (ja) | 2013-02-20 |
RU2009129877A (ru) | 2011-04-10 |
EP2129636A1 (de) | 2009-12-09 |
DE502008001321D1 (de) | 2010-10-28 |
EP2129636B1 (de) | 2010-09-15 |
DE102007010173B4 (de) | 2009-04-16 |
RU2440953C2 (ru) | 2012-01-27 |
CN101622209A (zh) | 2010-01-06 |
JP2010519168A (ja) | 2010-06-03 |
US7989381B2 (en) | 2011-08-02 |
ATE481368T1 (de) | 2010-10-15 |
DE102007010173A1 (de) | 2008-09-04 |
US20100048377A1 (en) | 2010-02-25 |
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