CN1328172C - Process for preparing high-purity zirconium dioxide - Google Patents
Process for preparing high-purity zirconium dioxide Download PDFInfo
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- CN1328172C CN1328172C CNB2004100103659A CN200410010365A CN1328172C CN 1328172 C CN1328172 C CN 1328172C CN B2004100103659 A CNB2004100103659 A CN B2004100103659A CN 200410010365 A CN200410010365 A CN 200410010365A CN 1328172 C CN1328172 C CN 1328172C
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- zirconium dioxide
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- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 title claims abstract description 78
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 title claims abstract description 76
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 36
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000012535 impurity Substances 0.000 claims abstract description 31
- 239000004576 sand Substances 0.000 claims abstract description 20
- 229910052845 zircon Inorganic materials 0.000 claims abstract description 20
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 19
- 238000002844 melting Methods 0.000 claims abstract description 12
- 230000008018 melting Effects 0.000 claims abstract description 12
- 238000007670 refining Methods 0.000 claims abstract description 11
- 230000008030 elimination Effects 0.000 claims description 23
- 238000003379 elimination reaction Methods 0.000 claims description 23
- 239000003795 chemical substances by application Substances 0.000 claims description 22
- 230000002829 reductive effect Effects 0.000 claims description 22
- 238000003723 Smelting Methods 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 15
- 239000000843 powder Substances 0.000 claims description 15
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 claims description 12
- 229910002804 graphite Inorganic materials 0.000 claims description 10
- 239000010439 graphite Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 239000000571 coke Substances 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 6
- 238000010298 pulverizing process Methods 0.000 claims description 6
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 5
- 229910052728 basic metal Inorganic materials 0.000 claims description 5
- 150000003818 basic metals Chemical class 0.000 claims description 5
- 239000008188 pellet Substances 0.000 claims description 5
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 4
- 239000011324 bead Substances 0.000 claims description 4
- 238000010891 electric arc Methods 0.000 claims description 4
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 claims description 4
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical group [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 claims description 4
- 239000006253 pitch coke Substances 0.000 claims description 4
- IOLCXVTUBQKXJR-UHFFFAOYSA-M potassium bromide Chemical compound [K+].[Br-] IOLCXVTUBQKXJR-UHFFFAOYSA-M 0.000 claims description 4
- JHJLBTNAGRQEKS-UHFFFAOYSA-M sodium bromide Chemical compound [Na+].[Br-] JHJLBTNAGRQEKS-UHFFFAOYSA-M 0.000 claims description 4
- FVAUCKIRQBBSSJ-UHFFFAOYSA-M sodium iodide Chemical compound [Na+].[I-] FVAUCKIRQBBSSJ-UHFFFAOYSA-M 0.000 claims description 4
- 239000003610 charcoal Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 239000011780 sodium chloride Substances 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 23
- 238000000034 method Methods 0.000 abstract description 23
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 abstract description 3
- 239000000377 silicon dioxide Substances 0.000 abstract description 3
- 239000004408 titanium dioxide Substances 0.000 abstract description 3
- 235000012239 silicon dioxide Nutrition 0.000 abstract description 2
- 239000003638 chemical reducing agent Substances 0.000 abstract 3
- 150000004820 halides Chemical class 0.000 abstract 2
- 229910052783 alkali metal Inorganic materials 0.000 abstract 1
- 150000001340 alkali metals Chemical class 0.000 abstract 1
- 239000012629 purifying agent Substances 0.000 abstract 1
- 239000002994 raw material Substances 0.000 description 10
- 229910004298 SiO 2 Inorganic materials 0.000 description 7
- 229910010413 TiO 2 Inorganic materials 0.000 description 7
- 239000011775 sodium fluoride Substances 0.000 description 5
- 235000013024 sodium fluoride Nutrition 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000002006 petroleum coke Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 240000001949 Taraxacum officinale Species 0.000 description 3
- 235000006754 Taraxacum officinale Nutrition 0.000 description 3
- 235000005187 Taraxacum officinale ssp. officinale Nutrition 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- 239000000049 pigment Substances 0.000 description 3
- DPDMMXDBJGCCQC-UHFFFAOYSA-N [Na].[Cl] Chemical compound [Na].[Cl] DPDMMXDBJGCCQC-UHFFFAOYSA-N 0.000 description 2
- 239000011449 brick Substances 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000010309 melting process Methods 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- NROKBHXJSPEDAR-UHFFFAOYSA-M potassium fluoride Chemical compound [F-].[K+] NROKBHXJSPEDAR-UHFFFAOYSA-M 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- USEGQPUGEPSVQL-UHFFFAOYSA-N [Pr].[Zr] Chemical compound [Pr].[Zr] USEGQPUGEPSVQL-UHFFFAOYSA-N 0.000 description 1
- DIVGJYVPMOCBKD-UHFFFAOYSA-N [V].[Zr] Chemical compound [V].[Zr] DIVGJYVPMOCBKD-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910001413 alkali metal ion Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 229960001866 silicon dioxide Drugs 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
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- Inorganic Compounds Of Heavy Metals (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The present invention relates to a method for producing zirconium dioxide, particularly to a method for producing high-purity zirconium dioxide. Zircon sand and block-shaped, powdery and granular carbon reducers of certain proportion are uniformly mixed and added into an arc furnace for refining desilication for certain time, or firstly, after the zircon sand and the powdery and granular carbon reducer are melted and desilicated, the block-shaped reducer is added for refining desilication. When the purity of zirconium dioxide is about 98%, a certain amount of halide generated by alkali metal and haloid elements as an impurity removing and purifying agent is added and melted or calcined so as to remove impurities. Thus, the high-purity zirconium dioxide with more than 99% of zirconium dioxide content is obtained. The method utilizes the principle that the halide can respectively generate high temperature chemical reaction with impurities remaining in the zirconium dioxide, such as silicon dioxide, aluminum oxide and titanium dioxide at certain temperature, and can be changed into gas to leak, and thus, high-purity zirconium dioxide with more than 99% of zirconium dioxide is obtained. The method reduces production cost, reduces environment pollution and further drives the development of high-purity zirconium dioxide manufacture with the electric melting method.
Description
One. technical field: the present invention relates to a kind of production method of zirconium dioxide, particularly relate to a kind of production method of high purity zirconium dioxide.
Two. background technology: zirconium white is a kind of important industrial raw materials, in refractory materials production, electronic industry, glass furnace refractory brick, ceramic pigment industry purposes is widely arranged, and is a kind of important industrial raw materials.The manufacture method of zirconium dioxide has multiple, reaches more than 99% as production high purity zirconium dioxide content, can use chemical process, but this method cost height, price is expensive, and discharging is sour, alkali waste water, and is bigger to the pollution of ecotope and water; Also available plasma method of the production of zirconium dioxide and electric smelting reduction method are produced in addition, these two kinds of production methods, and the content of its zirconium dioxide is all less than 99%, can't obtain content greater than 99% zirconium dioxide product.The electrofusion ball-blowing production method of the CN1099355 that our factory was succeeded in developing in the past, ZL94115847.0 zirconium dioxide, this patent has been started the precedent that China's electric smelting method is produced the higher degree zirconium dioxide, zirconium dioxide content reaches about 98%, this method uses the block reductive agent of carbon element to take the lead in finishing the industrialized producing technology that the electric smelting method is produced zirconium dioxide at home, be the refractory brick of development China glass furnace, alternative imported raw material, saving foreign exchange are made huge contribution.Electric smelting method production zirconium dioxide technology is simple, and cost is low, can produce the specification product of various different zirconium dioxide content, satisfies the different needs of different purposes, and zirconium dioxide content is up to about 98.5%.Owing to impurity such as silicon-dioxide residual in the zirconium dioxide product in the above-mentioned patent electric smelting method production process, aluminum oxide, titanium dioxide can't be removed, cause zirconium dioxide content not reach more than 99%, and zirconia-based pigment zirconium praseodymium yellow, zirconium vanadium blue require colour stability to get well, the colour generation ability is strong, the high zirconium material of used in electronic industry, require zirconium dioxide content to reach more than 99%, existing electric melting production method can not meet the demands.
Three. summary of the invention:
The objective of the invention is to overcome the deficiency that existing electric melting production method exists,, finish the production method of high purity zirconium dioxide by adding impurity elimination purificant electric smelting or calcining.
Technical scheme of the present invention is:
A kind of production method of high purity zirconium dioxide, with the zircon sand of zirconium dioxide content 〉=65% of 91～95 weight parts and the carbon element reductive agent of 6.5～9 weight parts, wherein block carbon element reductive agent 1.5～2.5 weight parts, powder shape carbon element reductive agent 5～6.5 weight parts, evenly mixed, add in the electric arc furnace, the melting desiliconization refining of heating, or it is earlier that zircon sand and powder carbon element reductive agent is evenly mixed, add arc melting, add block carbon element reductive agent refining desiliconization again, when zirconium dioxide purity reaches 98% left and right sides, the halogenide that adding is generated by basic metal and haloid element is as the impurity elimination purificant, and this impurity elimination purificant consumption is 1～20% of a zirconium dioxide weight part, behind the high-purity zirconium dioxide that obtains more than 99% with 8～10kg/cm
2The pressurized air turndown jet into bead or pour into bulk.
The production method of described high purity zirconium dioxide, after being mixed material evenly, the water mixing that adds 1～4 weight part again, putting into voltage is that 100～300V, electric current are in the electric arc furnace of 1800～12000A, electric smelting desiliconization 1～3 hour, or add block reductive agent again after adding the low current melting desiliconization that zircon sand and powder carbon element reductive agent adopt 1800～6000A earlier, with the high electric current refining desiliconization of 6000～12000A 0.3～1.5 hour, when zirconium dioxide purity reaches 98% left and right sides, add consumption and be 1～20% impurity elimination purificant of zirconium dioxide weight part.
The production method of described high purity zirconium dioxide; wherein block carbon element reductive agent is a graphite electrode slab; or be the oil coke button, or be the pitch coke button, or be charcoal lump; lumpiness is 5～60mm; carbon element powder reductive agent is the Graphite Electrodes powder, or is the refinery coke powder, or is the pitch coke powder; granular granularity is smaller or equal to 5mm, and the powdery granularity is less than 1mm.
A kind of production method of high purity zirconium dioxide, comprise that content is the hollow ball pellet of about 98% zirconium dioxide or the pulverizing material of piece material, with content the hollow ball pellet of about 98% zirconium dioxide or the pulverizing material of piece material, the halogenide that adding is generated by basic metal and haloid element is as the impurity elimination purificant, this impurity elimination purificant consumption is 1～20% of a zirconium dioxide weight part, after above-mentioned pulverizing material and impurity elimination purificant mixed, put in the electric furnace, fusing, remove impurity, obtain behind the high-purity zirconium dioxide more than 99% with 8～10kg/cm
2The pressurized air turndown jet into bead or pour into bulk.
Described impurity elimination purificant is LiCl, KF, and LiBr, NaF, NaCl, NaBr, NaI, KCl, KBr, a kind of among the KI, or two kinds, or three kinds, or four kinds.
Positive beneficial effect of the present invention:
1. the production method of high-purity zirconium dioxide of the present invention, utilize halogenide at a certain temperature, respectively with the free silica, aluminum oxide, the titanium dioxide generation high-temperature chemical reaction that remain in the zirconium dioxide, become gas evolution, thereby impurity elimination purification zirconium dioxide obtains zirconium dioxide content greater than 99% high purity zirconium dioxide.Make the zirconium dioxide product of electric smelting method or calcination method reach the level that can be used for electronic industry and ceramic pigment industry, reduce production costs, reduce environmental pollution.
2. successful implementation of the present invention has further promoted the development of electric smelting manufactured high purity zirconium dioxide.
3. the halogenide that utilizes the generation of basic metal and haloid element is as purificant, and starting material are easy to get, wide material sources, and price is cheaper, has improved the electric smelting method and has produced the zirconium dioxide economic benefit of enterprises.
4. the high-temperature chemical reaction formula that the impurity elimination that the present invention took place is purified is:
Al
2O
3+6MX→3M
2O(↑)+2AlX
3(↑)
TiO
2+4MX→2M
2O(↑)+TiX
4(↑)
SiO
2+4MX→2M
2O(↑)+SiX
4(↑)
Wherein: M represents alkalimetal ion, and X represents the haloid element ion.
Four. Brief Description Of Drawings:
Fig. 1: electric smelting method production technique block diagram
Fig. 2: another kind of electric smelting method production technique block diagram
Five. embodiment:
Embodiment one: referring to production technique block diagram shown in Figure 1, its production method and step are as follows:
1. raw material is chosen: choosing zirconium dioxide content is main raw material more than or equal to 65% zircon sand 1800Kg, in zircon sand: graphite electrode powder: the ratio of graphite electrode slab=94: 6.5: 2, desiliconization reductive agent graphite electrode powder 124.5Kg, graphite electrode slab 38.3Kg, Sodium Fluoride 130Kg is the impurity elimination purificant.
2. batching: after zircon sand and Graphite Electrodes powder mixed, in zircon sand: the ratio of water=94: 3, the clear water that adds 57.5Kg again continues to mix.
3. electric smelting desiliconization: carry out desiliconization according to the electric smelting method, current control is at 4000～6000A during desiliconization, and voltage control is at 110～120 volts.
4. refining desiliconization: the SiO in liquation
2Take off to a certain degree, add graphite electrode slab,, adopt 6000～8000A electric current to strengthen desiliconization.
5. add purificant fusing decon: with 130kg Sodium Fluoride powdery purificant, introduce in the stove, melt at a slow speed with 2000～4000A low current in the electric furnace desiliconization later stage, in melting process at a slow speed, SiO
2, Al
2O
3, TiO
2Deng impurity and purificant generation pyroreaction, become gas and from liquation, overflow, reach the purpose that electric smelting is purified.
6. blow ball or grinding and processing: with the high purity zirconium dioxide liquation behind the melting decon, turndown becomes hollow ball-shape with compressed air spraying, the broken again powder that is processed into desired particle size after the cooling, or turndown pours into piece, is broken into required particle again.Receive altogether content greater than 99% zirconium dioxide powder-like product 990Kg.
7. the Chemical Composition of product: ZrO
299.45%, SiO
20.02%, Al
2O
30.09%, Fe
2O
30.02%, TiO
20.15%, Na
2O 0.02%.
Embodiment two: present embodiment and embodiment one are basic identical, and something in common does not repeat, and difference is:
1. raw material is chosen: choosing zirconium dioxide content is main raw material more than or equal to 65% zircon sand 1700Kg, in zircon sand: petroleum coke powder: the ratio of oil coke button=94.5: 5.5: 1.2, desiliconization reductive agent petroleum coke powder 98.9Kg and oil coke button 21.6Kg, Potassium monofluoride 110 Kg are the impurity elimination purificant.
2. with zircon sand and refinery coke powder mixing, in zircon sand: the ratio of water=94: 4, it is stand-by that the clear water that adds 72Kg again continues to mix discharging in 5 minutes, and electric smelting desiliconization and refining then purified, the processing back obtains powder-like product 940Kg.
3. the Chemical Composition of this product: ZrO
299.48%, SiO
20.03%, Al
2O
30.06%, Fe
2O
30.01%, TiO
20.16%, K
2O 0.02%.
Embodiment three: present embodiment and embodiment one are basic identical, and something in common does not repeat, and difference is:
1. raw material is chosen: choosing zirconium dioxide content is main raw material more than or equal to 65% zircon sand 1900Kg, in zircon sand: petroleum coke powder: the ratio of oil coke button=94.5: 5.5: 1.2, desiliconization reductive agent petroleum coke powder 110.6Kg and oil coke button 24.1Kg, Sodium Fluoride and sodium-chlor impurity elimination purificant are 120Kg (Sodium Fluoride: sodium-chlor 26: 1).
2. batching: with zircon sand, refinery coke powder and oil coke button be mixing together, and in zircon sand: the ratio of water=94: 2, the clear water that adds 40.2Kg again continues to mix.
3. electric smelting desiliconization: carry out desiliconization according to the electric smelting method, current control is at 4000～6000A during desiliconization, and voltage control is at 110～120 volts.
4. refining desiliconization: the SiO in liquation
2Take off to a certain degree, adopt 6000～8000A electric current to strengthen desiliconization.
5. add purificant fusing decon, blow ball or grinding and processing after, obtain content greater than 99% zirconium dioxide powder-like product 1047Kg.
6. the Chemical Composition of this product: ZrO
299.58%, SiO
20.03%, Al
2O
30.06%, Fe
2O
30.01%, TiO
20.13%, Na
2O 0.02%.
Embodiment four: referring to production technique block diagram shown in Figure 2, its production method and step are as follows:
1. raw material is chosen: choose content and be about 98% zirconium dioxide hollow ball pellet 1800Kg, in zirconium dioxide: the ratio of impurity elimination purificant 2 100: 12, impurity elimination purificant are 216Kg (Potassium monofluoride: Repone K 26: 1).
2. add the purificant mixing: hollow ball and impurity elimination purificant are mixed.
3. furnace melting decon: the mixing material is packed in the electric furnace, melt at a slow speed with 3000～4000A low current, in melting process at a slow speed, SiO
2, Al
2O
3, TiO
2Deng impurity and purificant generation pyroreaction, become gas and from liquation, overflow, reach the purpose that electric smelting is purified.
4. blow ball or grinding and processing: with the high purity zirconium dioxide liquation behind the melting decon, turndown becomes hollow ball-shape with compressed air spraying, the broken again powder that is processed into desired particle size after the cooling, or turndown pours into piece, is broken into required particle again.Receive altogether content greater than 99% zirconium dioxide powder-like product 1618Kg.
5. the Chemical Composition of this product: ZrO
299.68%, SiO
20.03%, Al
2O
30.05%, Fe
2O
30.01%, TiO
20.12%, K
2O 0.02%.
Claims (5)
1, a kind of production method of high purity zirconium dioxide, with the zircon sand of zirconium dioxide content 〉=65% of 91～95 weight parts and the carbon element reductive agent of 6.5～9 weight parts, wherein block carbon element reductive agent 1.5～2.5 weight parts, powder shape carbon element reductive agent 5～6.5 weight parts, evenly mixed, add in the electric arc furnace, the melting desiliconization refining of heating, or it is earlier that zircon sand and powder carbon element reductive agent is evenly mixed, add arc melting, add block carbon element reductive agent refining desiliconization again, it is characterized in that: when zirconium dioxide purity reaches 98% left and right sides, the halogenide that adding is generated by basic metal and haloid element is as the impurity elimination purificant, and this impurity elimination purificant consumption is 1～20% of a zirconium dioxide weight part, behind the high-purity zirconium dioxide that obtains more than 99% with 8～10kg/cm
2The pressurized air turndown jet into bead or pour into bulk.
2, the production method of high purity zirconium dioxide according to claim 1, it is characterized in that: after being mixed material evenly, the water mixing that adds 1～4 weight part again, putting into voltage is 100～300V, electric current is in the electric arc furnace of 1800～12000A, electric smelting desiliconization 1～3 hour, or add block reductive agent again after adding the low current melting desiliconization that zircon sand and powder carbon element reductive agent adopt 1800～6000A earlier, with the high electric current refining desiliconization of 6000～12000A 0.3～1.5 hour, when zirconium dioxide purity reaches 98% left and right sides, add consumption and be 1～20% impurity elimination purificant of zirconium dioxide weight part.
3, the production method of high purity zirconium dioxide according to claim 1 and 2; it is characterized in that: block carbon element reductive agent is a graphite electrode slab; or be the oil coke button, or be the pitch coke button, or be charcoal lump; lumpiness is 5～60mm; carbon element powder reductive agent is the Graphite Electrodes powder, or is the refinery coke powder, or is the pitch coke powder; granular granularity is smaller or equal to 5mm, and the powdery granularity is less than 1mm.
4, a kind of production method of high purity zirconium dioxide, comprise that content is the hollow ball pellet of about 98% zirconium dioxide or the pulverizing material of piece material, it is characterized in that: be the hollow ball pellet of about 98% zirconium dioxide or the pulverizing material of piece material with content, the halogenide that adding is generated by basic metal and haloid element is as the impurity elimination purificant, this impurity elimination purificant consumption is 1～20% of a zirconium dioxide weight part, after above-mentioned pulverizing material and impurity elimination purificant mixed, put in the electric furnace, fusing, remove impurity, obtain behind the high-purity zirconium dioxide more than 99% with 8～10kg/cm
2The pressurized air turndown jet into bead or pour into bulk.
5, according to the production method of claim 1 or 2 or 4 described high purity zirconium dioxides, it is characterized in that: described impurity elimination purificant is LiCl, wherein a kind of of KF, LiBr, NaF, NaCl, NaBr, NaI, KCl, KBr, KI, or two kinds, or three kinds, or four kinds.
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| CN105905942A (en) * | 2014-12-05 | 2016-08-31 | 三祥新材股份有限公司 | High-purity electric smelting zirconium oxide |
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| CN117604638A (en) * | 2021-04-27 | 2024-02-27 | 三祥新材股份有限公司 | Method for producing monocrystal fused zirconium dioxide with low cost |
| CN113264673A (en) * | 2021-06-08 | 2021-08-17 | 三祥新材股份有限公司 | Method for producing yellowish-red zirconium-iron-red regulating pigment by electrically melting zirconia |
| CN115159980A (en) * | 2022-07-07 | 2022-10-11 | 郑州振中电熔新材料有限公司 | Method for manufacturing fused yttrium stabilized zirconia by using zirconium gem processing waste |
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|---|---|---|---|---|
| US5009878A (en) * | 1989-06-02 | 1991-04-23 | Huels Aktiengesellschaft | Zirconium dioxide powder, processes for its preparation and its use for the production of sintered articles |
| US5106794A (en) * | 1988-03-15 | 1992-04-21 | Tosoh Corporation | Zirconium oxide sinter for forming thin film thereof and method for production of the same |
| CN1099355A (en) * | 1994-08-20 | 1995-03-01 | 李起胜 | Production method of zirconium dioxide by electric melting and blowing |
| CN1465529A (en) * | 2002-06-04 | 2004-01-07 | 漳州锦源盛锆业有限公司 | Method for preparing zirconium dioxide by electrically smelting zircon |
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- 2004-06-25 CN CNB2004100103659A patent/CN1328172C/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5106794A (en) * | 1988-03-15 | 1992-04-21 | Tosoh Corporation | Zirconium oxide sinter for forming thin film thereof and method for production of the same |
| US5009878A (en) * | 1989-06-02 | 1991-04-23 | Huels Aktiengesellschaft | Zirconium dioxide powder, processes for its preparation and its use for the production of sintered articles |
| CN1099355A (en) * | 1994-08-20 | 1995-03-01 | 李起胜 | Production method of zirconium dioxide by electric melting and blowing |
| CN1465529A (en) * | 2002-06-04 | 2004-01-07 | 漳州锦源盛锆业有限公司 | Method for preparing zirconium dioxide by electrically smelting zircon |
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