CN100453502C - Production method of electric melting magnesium-aluminium-zirconium synthetic material - Google Patents
Production method of electric melting magnesium-aluminium-zirconium synthetic material Download PDFInfo
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- CN100453502C CN100453502C CNB021155453A CN02115545A CN100453502C CN 100453502 C CN100453502 C CN 100453502C CN B021155453 A CNB021155453 A CN B021155453A CN 02115545 A CN02115545 A CN 02115545A CN 100453502 C CN100453502 C CN 100453502C
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- 229920002994 synthetic fiber Polymers 0.000 title claims abstract description 100
- 238000002844 melting Methods 0.000 title claims abstract description 38
- 230000008018 melting Effects 0.000 title claims abstract description 38
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 31
- -1 magnesium-aluminium-zirconium Chemical compound 0.000 title claims description 66
- 239000000843 powder Substances 0.000 claims abstract description 55
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 35
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 28
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 27
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims abstract description 23
- 239000001095 magnesium carbonate Substances 0.000 claims abstract description 22
- 235000014380 magnesium carbonate Nutrition 0.000 claims abstract description 22
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims abstract description 22
- 238000010891 electric arc Methods 0.000 claims abstract description 21
- 238000001816 cooling Methods 0.000 claims abstract description 14
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 239000011449 brick Substances 0.000 claims abstract description 10
- 239000004575 stone Substances 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 72
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 34
- 238000002156 mixing Methods 0.000 claims description 24
- 229910001051 Magnalium Inorganic materials 0.000 claims description 18
- 229910052742 iron Inorganic materials 0.000 claims description 17
- 238000007885 magnetic separation Methods 0.000 claims description 17
- 230000008030 elimination Effects 0.000 claims description 16
- 238000003379 elimination reaction Methods 0.000 claims description 16
- 239000002245 particle Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 12
- 238000003723 Smelting Methods 0.000 claims description 10
- 239000000571 coke Substances 0.000 claims description 9
- 239000007921 spray Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 239000003638 chemical reducing agent Substances 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 8
- 229910052593 corundum Inorganic materials 0.000 claims description 8
- 239000010431 corundum Substances 0.000 claims description 8
- 230000004927 fusion Effects 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 8
- 229910052845 zircon Inorganic materials 0.000 claims description 8
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 claims description 8
- 229910002804 graphite Inorganic materials 0.000 claims description 7
- 239000010439 graphite Substances 0.000 claims description 7
- 239000003610 charcoal Substances 0.000 claims description 4
- 239000006253 pitch coke Substances 0.000 claims description 4
- 239000011819 refractory material Substances 0.000 abstract description 8
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 abstract description 6
- 229910052749 magnesium Inorganic materials 0.000 abstract description 6
- 239000011777 magnesium Substances 0.000 abstract description 6
- 230000003628 erosive effect Effects 0.000 abstract description 4
- 238000005272 metallurgy Methods 0.000 abstract description 3
- 230000035939 shock Effects 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 3
- 229910052782 aluminium Inorganic materials 0.000 abstract 3
- 239000004411 aluminium Substances 0.000 abstract 3
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 abstract 2
- 229910001928 zirconium oxide Inorganic materials 0.000 abstract 2
- 239000002893 slag Substances 0.000 description 12
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 6
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 5
- 230000008595 infiltration Effects 0.000 description 5
- 238000001764 infiltration Methods 0.000 description 5
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 241001504664 Crossocheilus latius Species 0.000 description 3
- 229910020068 MgAl Inorganic materials 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 229910052596 spinel Inorganic materials 0.000 description 3
- 239000011029 spinel Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 208000037656 Respiratory Sounds Diseases 0.000 description 2
- NACUKFIFISCLOQ-UHFFFAOYSA-N [Mg].[Cr] Chemical compound [Mg].[Cr] NACUKFIFISCLOQ-UHFFFAOYSA-N 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005496 eutectics Effects 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000007903 penetration ability Effects 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004901 spalling Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
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Abstract
The present invention relates to a new production method for electric melting refractory materials, which particularly relates to a production method of a synthetic material of magnesium, aluminium and zirconium. Measured according to weight portions, the synthetic material of magnesium, aluminium and zirconium comprises 177 to 192 portions of magnesite stones, 4 to 8.2 portions of alumina powder and 2 to 7 portions of zirconium oxide. The production method of the present invention comprises: raw materials of the magnesite stones, the alumina powder and the zirconium oxide are processed into fine powder and are uniformly mixed; the fine powder is gradually added into an electric arc furnace which is switched on to heat and melt the fine powder, wherein melting time is about 25 to 35 minutes, and melting temperature is 2000 to 3000 DEG C; electrodes are lifted, and an obtained synthetic material is cooled for 24 to 48 hours in the electric arc furnace to solidify into blocks, or high temperature synthetic material liquid after melting is cast and poured in a carbon brick container or a water-cooling pot for cooling; then, the cooled synthetic material blocks are broken, graded, crushed and processed. The synthetic material of magnesium, aluminium and zirconium can become a new superior refractory material which has the advantages of good erosion resisting characteristic, high temperature resistance and thermal shock resistance, and has wide application in metallurgy industry. The present invention has better economic and social benefit.
Description
(1) technical field:
The present invention relates to a kind of production method of electrocast refractories, particularly relate to a kind of production method of electric melting magnesium-aluminium-zirconium synthetic material.
(2) background technology:
Current in metallurgy industry, the strong refractory materials of anti-slag penetration ability has the magnesium carbonaceous, magnesium chromium matter and refractory magnesia-alumina material.With regard to steel industry, the carbon of magnesia carbon refractory easily enters in the molten steel, influence the quality of molten steel, and the magnesium chrome refractory, in use Cr2O3 enters in the slag, can improve the viscosity of solution, slows down the infiltration of slag to magnesium chromium matter refractory product, but under alkaline medium and oxidizing atmosphere condition, Cr2O3 is easy to be oxidized to deleterious Cr
6+, and cause environmental pollution; Though have the strong advantage of anti-slag penetration ability for the refractory magnesia-alumina material, it is easy to be decomposed by the fCaO in the rich CaO slag and generates low melt-phase and quicken damage, thus in metallurgy industry the scientific worker to seek new synthetic fire resistive material imperative.
(3) summary of the invention:
The objective of the invention is: overcome the deficiency of present refractory materials, develop production method of electric melting magnesium-aluminium-zirconium synthetic material.
Technical scheme of the present invention is: a kind of production method of electric melting magnesium-aluminium-zirconium synthetic material, with the weight part is unit, contain 177～192 parts of magnesite building stones, 4～8.2 parts in commercial alumina or corundum, 2～7 parts of zirconium whites, with above-mentioned each the material be processed into fine powder material after, mixing, progressively add the fusing of heating of switching in the electric arc furnace, smelting time is 25～45 minutes, and temperature of fusion is 2000 ℃～3000 ℃, mention electrode, high temperature synthetic material after the melting cooled in electric arc furnace 24～48 hours, was frozen into the magnesium-aluminium-zirconium synthetic material piece, or the synthetic feed liquid cast of the high temperature after the melting poured in carbon brick container or the water-cooled jar was cooled to the magnesium-aluminium-zirconium synthetic material piece.
Described fine powder material blending process carries out in the V-type mixer, mixed 30～45 minutes earlier, spray into 1～2 part water wet mixing 5～10 minutes again by per hundred parts of compounds, the fine powder material granularity is less than 0.5mm, the described magnesium-aluminium-zirconium synthetic material piece that cools and be frozen into, in the electrode centers district is one-level material piece, and near around the electrode is secondary material piece, and all the other are for owing melt, with one, broken in the arena of secondary material piece beaten broken, the carbon elimination grain, decon, iron removal by magnetic separation, and processing powder is broken into desired particle size as required, be divided into one-level magnalium zirconium finished product synthetic material, secondary magnalium zirconium finished product synthetic material is owed melt and is melted down fusing again, maybe will pour into a mould the caked magnesium-aluminium-zirconium synthetic material piece of cooling and beat broken sorting carbon elimination grain, decon, iron removal by magnetic separation, and processing powder is broken into the magnesium-aluminium-zirconium synthetic material of desired particle size as required.
With the weight part is unit, contain 89～97 parts of caustic-calcined magnesite or electrosmelted magnesite clinkers, 4～8.2 parts in commercial alumina or corundum, 2.3～7 parts of zirconium whites, with above-mentioned each the material be processed into fine powder material after, mixing, progressively add the fusing of heating of switching in the electric arc furnace, smelting time is 25～45 minutes, temperature of fusion is 2000 ℃～3000 ℃, mentions electrode, and the high temperature synthetic material after the melting cooled in electric arc furnace 24～48 hours, be frozen into the magnesium-aluminium-zirconium synthetic material piece, or the synthetic feed liquid cast of the high temperature after the melting poured in carbon brick container or the water-cooled jar be cooled to the magnesium-aluminium-zirconium synthetic material piece.
Described fine powder material blending process carries out in the V-type mixer, mixed 30～45 minutes earlier, spray into 1～2 part water wet mixing 5～10 minutes again by per hundred parts of compounds, the fine powder material granularity is less than 0.5mm, the described magnesium-aluminium-zirconium synthetic material piece that cools and be frozen into, in the electrode centers district is one-level material piece, and near around the electrode is secondary material piece, and all the other are for owing melt, with one, broken in the arena of secondary material piece beaten broken, the carbon elimination grain, decon, iron removal by magnetic separation, and processing powder is broken into desired particle size as required, be divided into one-level magnalium zirconium finished product synthetic material, secondary magnalium zirconium finished product synthetic material is owed melt and is melted down fusing again, maybe will pour into a mould the caked magnesium-aluminium-zirconium synthetic material piece of cooling and beat broken sorting carbon elimination grain, decon, iron removal by magnetic separation, and processing powder is broken into the magnesium-aluminium-zirconium synthetic material of desired particle size as required.
With the weight part is unit, contain 177～192 parts of magnesite building stones, 4～8.2 parts in commercial alumina or corundum, 3～9.5 parts of zircon sands, 1～2 part of carbonaceous reducing agent, with above-mentioned each the material be processed into fine powder material after, mixing, progressively add the fusing of heating of switching in the electric arc furnace, smelting time is 25～45 minutes, and temperature of fusion is 2000 ℃～3000 ℃, mention electrode, high temperature synthetic material after the melting cooled in electric arc furnace 24～48 hours, was frozen into the magnesium-aluminium-zirconium synthetic material piece, or the synthetic feed liquid cast of the high temperature after the melting poured in carbon brick container or the water-cooled jar was cooled to the magnesium-aluminium-zirconium synthetic material piece.
Described carbonaceous reducing agent is a Graphite Electrodes, coke, charcoal, refinery coke, pitch coke, described fine powder material blending process carries out in the V-type mixer, mixed 30～45 minutes earlier, spray into 1～2 part water wet mixing 5～10 minutes again by per hundred parts of compounds, the fine powder material granularity is less than 0.5mm, the described magnesium-aluminium-zirconium synthetic material piece that cools and be frozen into, in the electrode centers district is one-level material piece, near around electrode is secondary material piece, all the other are for owing melt, with one, broken in the arena of secondary material piece beaten broken, the carbon elimination grain, decon, iron removal by magnetic separation, and processing powder is broken into desired particle size as required, is divided into one-level magnalium zirconium finished product synthetic material, secondary magnalium zirconium finished product synthetic material, owe melt and melt down fusing again, maybe will pour into a mould the caked magnesium-aluminium-zirconium synthetic material piece of cooling and beat broken sorting carbon elimination grain, decon, iron removal by magnetic separation, and processing powder is broken into the magnesium-aluminium-zirconium synthetic material of desired particle size as required.
With the weight part is unit, contain 89～97 parts of caustic-calcined magnesite or electrosmelted magnesite clinkers, 4～8.2 parts in commercial alumina or corundum, 3～9.5 parts of zircon sands, 1～2 part of carbonaceous reducing agent, with above-mentioned each the material be processed into fine powder material after, mixing, progressively add the fusing of heating of switching in the electric arc furnace, smelting time is 25～45 minutes, and temperature of fusion is 2000 ℃～3000 ℃, mention electrode, high temperature synthetic material after the melting cooled in electric arc furnace 24～48 hours, was frozen into the magnesium-aluminium-zirconium synthetic material piece, or the synthetic feed liquid cast of the high temperature after the melting poured in carbon brick container or the water-cooled jar was cooled to the magnesium-aluminium-zirconium synthetic material piece.
Described carbonaceous reducing agent is a Graphite Electrodes, coke, charcoal, refinery coke, pitch coke, described fine powder material blending process carries out in the V-type mixer, mixed 30～45 minutes earlier, spray into 1～2 part water wet mixing 5～10 minutes again by per hundred parts of compounds, the fine powder material granularity is less than 0.5mm, the described magnesium-aluminium-zirconium synthetic material piece that cools and be frozen into, in the electrode centers district is one-level material piece, near around electrode is secondary material piece, all the other are for owing melt, with one, broken in the arena of secondary material piece beaten broken, carbon elimination grain, decon, iron removal by magnetic separation, and processing powder is broken into desired particle size as required, is divided into one-level magnalium zirconium finished product synthetic material, secondary magnalium zirconium finished product synthetic material, owe melt and melt down fusing again, maybe will pour into a mould the caked magnesium-aluminium-zirconium synthetic material piece of cooling and beat broken sorting carbon elimination grain, impurity, the magnesium-aluminium-zirconium synthetic material of the synthetic desired particle size of iron removal by magnetic separation processing.
The present invention has useful positively effect:
(1) magnesium-aluminium-zirconium synthetic material will become and have anti-erosion, and will be high temperature resistant, the of new generation good refractory materials of anti-thermal shock.
(2) show through Research of microstructure, because ZrO
2Combine the CaZrO of a kind of fusing point of generation up to 2345 ℃ with CaO
3Material, ZrO
2Absorb the CaO that spinel is had Decomposition at material internal, and generate CaOZrO
2, improved hot strength, and interception played in the infiltration of slag.Because CaOZrO
2The pore that formed rear enclosed blocks the eutectic silicate passage of infiltration towards periphery mutually, has stoped the infiltration of eutectic to square magnesium stone-spinel.Because CaZrO
3Different with the thermal expansivity of MgO, thus micro-flaw formed, effect that can relief of thermal stress.The expansion crack healing stops the infiltration of slag during high temperature, and crackle separates during low temperature, and dispersion should add CaZrO
3With the pore sealing, make the pore of perforation become sealed porosity.And ZrO
2Can absorb the CaO in the matrix or in the slag, optimize in the slag and make up, and form high-melting-point, the high erosion-resistant CaZrO of growth in situ
3Belt structure, sealed porosity and crackle stop the further erosion of slag, and the protection spinel is not further decomposed by CaO mutually.Owing to add ZrO
2Material and the MgO-MgAl that forms
2O
4-CaZrO
3System has special microstructure, has complementary advantages, and has good thermal shock resistance, and slag resistance and hot strength are so be one of splendid synthetic fire resistive material.
(3) application practice proves, works as ZrO
2Be incorporated into MgO-MgAl
2O
4In the series refractory material, make this material have very high corrosion resistance for rich C aO slag.Also can improve MgO-MgAl
2O
4The adhesive ability of the erosion resistance that series refractory material uses on the cement rotary kiln clinkering zone, spalling resistance structure and material.
(4) physical and chemical index of electric melting magnesium-aluminium-zirconium synthetic materials sees the following form:
(4) description of drawings:
Fig. 1 is electric melting magnesium-aluminium-zirconium synthetic material stone roller production method operational path skeleton diagram.
Fig. 2 is electric melting magnesium-aluminium-zirconium synthetic material casting production method operational path skeleton diagram.
(5) embodiment:
Embodiment one, weight part is unit with the kilogram, magnesite building stones 740kg, commercial alumina powder 24kg, zirconium white adopts electric smelting desilicated zirconia 24kg, above-mentioned raw materials is ground into the fine powder of granularity less than 0.5mm, after the V-type mixer is done mixed 40 minutes, spray into 15.76kg water, rewetting mixed 5～10 minutes, progressively add in the electric arc furnace, energising is heated and is dissolved, voltage 400V, electric current 1600A, 2000 ℃～3000 ℃ of melting temperatures, electrode is mentioned in melting 32 minutes, add a cover, outage cooling cooling 40 hours, synthetic material is frozen into piece in electric arc furnace, and the synthetic material piece that cooling is good is transported on the anvil of beating broken, cut off the power supply then from falling in the air with electro-magnet absorption steel ball to certain altitude, the synthetic material coagulated mass is smashed, and the fragment that obtains varying in size after smashing carries out sorting, and the fragment in electrode centers district is an one-level piece material, around the electrode is the second-order block material, all the other are for owing melt, melt down fusing again after the foreign material such as carbon granules of owing melt are removed, select one, the second-order block material, separated pulverizing is machined to required grade, is packaged into Kucheng through iron removal by magnetic separation and is magnesium-aluminium-zirconium synthetic material.
Perhaps be molded in the carbon brick container when melted high temperature synthesizes feed liquid, allow its cooled and solidified become the piece material, the arena is broken behind the taking-up piece material, and its working method is same as above, no longer repeats.Can produce about 403kg magnesium-aluminium-zirconium synthetic material, the advantage of teeming practice is to advance semicontinuous production, heat energy utilization rate height, the production efficiency height, electric power and material consumption are lower, but the casting shortcoming is: high temperature liquid material is cool too fast, is unfavorable for the magnesium-aluminium-zirconium synthetic material crystal growth, be difficult to obtain big crystallization, the high quality synthetic material.Aforementioned production method is title stone roller method also, the advantage of this method is that the synthetic feed liquid of high temperature is in self slowly cooling of electric arc furnace outage back, also form the high-quality magnesium-aluminium-zirconium synthetic material of big crystallization in electrode centers, owe the melt refuse, the product level is high, and quality is also high, but the shortcoming of change stone roller method is, production efficiency is lower, can't carry out continuous or semicontinuous production.
Embodiment two, weight unit kilogram, batching giobertite 716kg, chemical oxidation zirconium 8kg, its production method does not repeat with embodiment one.Produce about 370kg magnesium-aluminium-zirconium synthetic material.
Embodiment three, weight unit kilogram, batching caustic-calcined magnesite 712kg, aluminum oxide powder 32kg, chemical oxidation zirconium 16kg, production method does not repeat with embodiment one.Can get the about 748kg of magnesium-aluminium-zirconium synthetic material.
Embodiment four, weight unit kilogram, batching electrosmelted magnesite clinker 712kg, aluminum oxide powder 48kg, electric smelting desilicated zirconia 48kg, production method does not repeat with embodiment one.Can get the about 796kg of magnesium-aluminium-zirconium synthetic material.
Embodiment five, weight part unit's kilogram, magnesite building stones 1140kg, aluminum oxide powder 42kg, zircon sand 36kg, graphite electrode powder 9kg, production method does not repeat with embodiment one.Can get the about 620kg of magnesium-aluminium-zirconium synthetic material.
Embodiment six, weight unit kilogram, batching magnesite building stones 720kg, aluminum oxide powder 20kg, zircon sand 28kg, refinery coke 8kg, production method does not repeat with embodiment one.Can get the about 390kg of magnesium-aluminium-zirconium synthetic material.
Embodiment seven, weight unit kilogram, batching caustic-calcined magnesite or electrosmelted magnesite clinker 486kg, aluminum oxide 36kg, zircon sand 42kg, Graphite Electrodes 12kg, production method does not repeat with embodiment one.Can get the about 550kg of magnalium zirconium composite powder.
Embodiment eight, weight unit kilogram, batching electrosmelted magnesite clinker 776kg, aluminum oxide powder 65.6kg, zircon sand 76kg, graphite utmost point powder 16kg, production method does not repeat with implementing one.Can get the about 890kg of magnalium zirconium composite powder.
Claims (8)
1. production method of electric melting magnesium-aluminium-zirconium synthetic material, it is characterized in that: be unit with the weight part, contain 177～192 parts of magnesite building stones, 4～8.2 parts in commercial alumina or corundum, 2～7 parts of zirconium whites, with above-mentioned each the material be processed into fine powder material after, mixing, progressively add the fusing of heating of switching in the electric arc furnace, smelting time is 25～45 minutes, and temperature of fusion is 2000 ℃～3000 ℃, mention electrode, high temperature synthetic material after the melting cooled in electric arc furnace 24～48 hours, was frozen into the magnesium-aluminium-zirconium synthetic material piece, or the synthetic feed liquid cast of the high temperature after the melting poured in carbon brick container or the water-cooled jar was cooled to the magnesium-aluminium-zirconium synthetic material piece.
2. production method of electric melting magnesium-aluminium-zirconium synthetic material according to claim 1, it is characterized in that: described fine powder material blending process carries out in the V-type mixer, mixed 30～45 minutes earlier, spray into 1～2 part water wet mixing 5～10 minutes again by per hundred parts of compounds, the fine powder material granularity is less than 0.5mm, the described magnesium-aluminium-zirconium synthetic material piece that cools and be frozen into, in the electrode centers district is one-level material piece, near around electrode is secondary material piece, all the other are for owing melt, with one, broken in the arena of secondary material piece beaten broken, the carbon elimination grain, decon, iron removal by magnetic separation, and processing powder is broken into desired particle size as required, is divided into one-level magnalium zirconium finished product synthetic material, secondary magnalium zirconium finished product synthetic material, owe melt and melt down fusing again, maybe will pour into a mould the caked magnesium-aluminium-zirconium synthetic material piece of cooling and beat broken sorting carbon elimination grain, decon, iron removal by magnetic separation, and processing powder is broken into the magnesium-aluminium-zirconium synthetic material of desired particle size as required.
3. production method of electric melting magnesium-aluminium-zirconium synthetic material, it is characterized in that: be unit with the weight part, contain 89～97 parts of caustic-calcined magnesite or electrosmelted magnesite clinkers, 4～8.2 parts in commercial alumina or corundum, 2.3～7 parts of zirconium whites, with above-mentioned each the material be processed into fine powder material after, mixing, progressively add the fusing of heating of switching in the electric arc furnace, smelting time is 25～45 minutes, and temperature of fusion is 2000 ℃～3000 ℃, mention electrode, high temperature synthetic material after the melting cooled in electric arc furnace 24～48 hours, was frozen into the magnesium-aluminium-zirconium synthetic material piece, or the synthetic feed liquid cast of the high temperature after the melting poured in carbon brick container or the water-cooled jar was cooled to the magnesium-aluminium-zirconium synthetic material piece.
4. production method of electric melting magnesium-aluminium-zirconium synthetic material according to claim 3, it is characterized in that: described fine powder material blending process carries out in the V-type mixer, mixed 30～45 minutes earlier, spray into 1～2 part water wet mixing 5～10 minutes again by per hundred parts of compounds, the fine powder material granularity is less than 0.5mm, the described magnesium-aluminium-zirconium synthetic material piece that cools and be frozen into, in the electrode centers district is one-level material piece, near around electrode is secondary material piece, all the other are for owing melt, with one, broken in the arena of secondary material piece beaten broken, the carbon elimination grain, decon, iron removal by magnetic separation, and processing powder is broken into desired particle size as required, is divided into one-level magnalium zirconium finished product synthetic material, secondary magnalium zirconium finished product synthetic material, owe melt and melt down fusing again, maybe will pour into a mould the caked magnesium-aluminium-zirconium synthetic material piece of cooling and beat broken sorting carbon elimination grain, decon, iron removal by magnetic separation, and processing powder is broken into the magnesium-aluminium-zirconium synthetic material of desired particle size as required.
5. production method of electric melting magnesium-aluminium-zirconium synthetic material, it is characterized in that: be unit with the weight part, contain 177～192 parts of magnesite building stones, 4～8.2 parts in commercial alumina or corundum, 3～9.5 parts of zircon sands, 1～2 part of carbonaceous reducing agent, after above-mentioned each material was processed into fine powder material, mixing progressively added in the electric arc furnace energising fusing of heating, smelting time is 25～45 minutes, temperature of fusion is 2000 ℃～3000 ℃, mentions electrode, and the high temperature synthetic material after the melting cooled in electric arc furnace 24～48 hours, be frozen into the magnesium-aluminium-zirconium synthetic material piece, or the synthetic feed liquid cast of the high temperature after the melting poured in carbon brick container or the water-cooled jar be cooled to the magnesium-aluminium-zirconium synthetic material piece.
6. production method of electric melting magnesium-aluminium-zirconium synthetic material according to claim 5, it is characterized in that: carbonaceous reducing agent is a Graphite Electrodes, coke, charcoal, refinery coke, pitch coke, described fine powder material blending process carries out in the V-type mixer, mixed 30～45 minutes earlier, spray into 1～2 part water wet mixing 5～10 minutes again by per hundred parts of compounds, the fine powder material granularity is less than 0.5mm, the described magnesium-aluminium-zirconium synthetic material piece that cools and be frozen into, in the electrode centers district is one-level material piece, and near around the electrode is secondary material piece, and all the other are for owing melt, with one, broken in the arena of secondary material piece beaten broken, the carbon elimination grain, decon, iron removal by magnetic separation, and processing powder is broken into desired particle size as required, be divided into one-level magnalium zirconium finished product synthetic material, secondary magnalium zirconium finished product synthetic material is owed melt and is melted down fusing again, maybe will pour into a mould the caked magnesium-aluminium-zirconium synthetic material piece of cooling and beat broken sorting carbon elimination grain, decon, iron removal by magnetic separation, and processing powder is broken into the magnesium-aluminium-zirconium synthetic material of desired particle size as required.
7. production method of electric melting magnesium-aluminium-zirconium synthetic material, it is characterized in that: be unit with the weight part, contain 89～97 parts of caustic-calcined magnesite or electrosmelted magnesite clinkers, 4～8.2 parts in commercial alumina or corundum, 3～9.5 parts of zircon sands, 1～2 part of carbonaceous reducing agent, after above-mentioned each material was processed into fine powder material, mixing progressively added in the electric arc furnace energising fusing of heating, smelting time is 25～45 minutes, temperature of fusion is 2000 ℃～3000 ℃, mentions electrode, and the high temperature synthetic material after the melting cooled in electric arc furnace 24～48 hours, be frozen into the magnesium-aluminium-zirconium synthetic material piece, or the synthetic feed liquid cast of the high temperature after the melting poured in carbon brick container or the water-cooled jar be cooled to the magnesium-aluminium-zirconium synthetic material piece.
8. production method of electric melting magnesium-aluminium-zirconium synthetic material according to claim 7, it is characterized in that: carbonaceous reducing agent is a Graphite Electrodes, coke, charcoal, refinery coke, pitch coke, described fine powder material blending process carries out in the V-type mixer, mixed 30～45 minutes earlier, spray into 1～2 part water wet mixing 5～10 minutes again by per hundred parts of compounds, the fine powder material granularity is less than 0.5mm, the described magnesium-aluminium-zirconium synthetic material piece that cools and be frozen into, in the electrode centers district is one-level material piece, and near around the electrode is secondary material piece, and all the other are for owing melt, with one, broken in the arena of secondary material piece beaten broken, the carbon elimination grain, decon, iron removal by magnetic separation, and processing powder is broken into desired particle size as required, be divided into one-level magnalium zirconium finished product synthetic material, secondary magnalium zirconium finished product synthetic material is owed melt and is melted down fusing again, maybe will pour into a mould the caked magnesium-aluminium-zirconium synthetic material piece of cooling and beat broken sorting carbon elimination grain, decon, iron removal by magnetic separation, and processing powder is broken into the magnesium-aluminium-zirconium synthetic material of desired particle size as required.
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| CN102649644A (en) * | 2011-02-23 | 2012-08-29 | 任有科 | Magnesium aluminum zirconium melting refractory material and preparation method |
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| CN100453510C (en) * | 2006-03-16 | 2009-01-21 | 刘跃强 | Electrical melting ferric aluminum magnesium synthetical material and manufacturing method thereof |
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| CN101654365B (en) * | 2009-09-22 | 2012-05-02 | 武汉科技大学 | Fused hercynite-corundum composite material and preparation method thereof |
| CN102241522A (en) * | 2010-05-13 | 2011-11-16 | 郑州振中电熔锆业有限公司 | Electrofusion manufacture method of magnesium stabilized zirconia |
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| CN104692817A (en) * | 2015-02-11 | 2015-06-10 | 任有科 | Refractory profile and production method thereof |
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| CN110002885A (en) * | 2019-04-18 | 2019-07-12 | 辽宁科技大学 | A method of the fused magnesite of zirconium spinel containing magnalium is prepared with electric arc furnaces |
| CN111377748A (en) * | 2020-05-08 | 2020-07-07 | 田时钟 | Molten refractory material for iron and steel smelting and preparation method and application thereof |
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Assignee: Zhejiang Changxing Tieshi Fireproofing Material Co., Ltd. Assignor: Zhengzhou Zhenzhong Electric Zirconium Melting INdustry Co., Ltd. Contract record no.: 2012330000251 Denomination of invention: Production method of electric melting magnesium-aluminium-zirconium synthetic material Granted publication date: 20090121 License type: Exclusive License Open date: 20030430 Record date: 20120510 |
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