KR20220077652A - 비정질 텅스텐산 융합체 및 이를 이용하여 제조된 텅스텐 산화물 - Google Patents
비정질 텅스텐산 융합체 및 이를 이용하여 제조된 텅스텐 산화물 Download PDFInfo
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- tungstic acid
- amorphous
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- acid fusion
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- CMPGARWFYBADJI-UHFFFAOYSA-L tungstic acid Chemical compound O[W](O)(=O)=O CMPGARWFYBADJI-UHFFFAOYSA-L 0.000 title claims abstract description 242
- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 title claims description 13
- 229910001930 tungsten oxide Inorganic materials 0.000 title claims description 13
- 239000002131 composite material Substances 0.000 title description 2
- 230000004927 fusion Effects 0.000 claims abstract description 127
- 239000011164 primary particle Substances 0.000 claims abstract description 70
- 238000000034 method Methods 0.000 claims abstract description 51
- 239000002245 particle Substances 0.000 claims description 79
- 239000007864 aqueous solution Substances 0.000 claims description 56
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 55
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 50
- 239000000843 powder Substances 0.000 claims description 45
- PBYZMCDFOULPGH-UHFFFAOYSA-N tungstate Chemical compound [O-][W]([O-])(=O)=O PBYZMCDFOULPGH-UHFFFAOYSA-N 0.000 claims description 44
- 239000000243 solution Substances 0.000 claims description 43
- 239000000654 additive Substances 0.000 claims description 38
- 238000004519 manufacturing process Methods 0.000 claims description 37
- 230000000996 additive effect Effects 0.000 claims description 35
- 239000003929 acidic solution Substances 0.000 claims description 33
- 150000003868 ammonium compounds Chemical class 0.000 claims description 27
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 21
- 230000005484 gravity Effects 0.000 claims description 16
- 238000001354 calcination Methods 0.000 claims description 12
- 238000009826 distribution Methods 0.000 claims description 11
- 230000002776 aggregation Effects 0.000 claims description 10
- 238000005054 agglomeration Methods 0.000 claims description 9
- 239000012798 spherical particle Substances 0.000 claims description 8
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 8
- 238000005255 carburizing Methods 0.000 claims description 6
- 238000000691 measurement method Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 39
- 230000004931 aggregating effect Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 4
- 239000000809 air pollutant Substances 0.000 abstract description 2
- 239000003403 water pollutant Substances 0.000 abstract description 2
- 239000010937 tungsten Substances 0.000 description 43
- 229910052721 tungsten Inorganic materials 0.000 description 43
- XMVONEAAOPAGAO-UHFFFAOYSA-N sodium tungstate Chemical compound [Na+].[Na+].[O-][W]([O-])(=O)=O XMVONEAAOPAGAO-UHFFFAOYSA-N 0.000 description 38
- 238000005406 washing Methods 0.000 description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 18
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 16
- XAYGUHUYDMLJJV-UHFFFAOYSA-Z decaazanium;dioxido(dioxo)tungsten;hydron;trioxotungsten Chemical compound [H+].[H+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.[O-][W]([O-])(=O)=O.[O-][W]([O-])(=O)=O.[O-][W]([O-])(=O)=O.[O-][W]([O-])(=O)=O.[O-][W]([O-])(=O)=O.[O-][W]([O-])(=O)=O XAYGUHUYDMLJJV-UHFFFAOYSA-Z 0.000 description 16
- 238000002441 X-ray diffraction Methods 0.000 description 15
- 239000002253 acid Substances 0.000 description 15
- 239000002994 raw material Substances 0.000 description 13
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 12
- 238000001914 filtration Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 9
- 238000003756 stirring Methods 0.000 description 9
- -1 and may include ore Substances 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 8
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 7
- 239000002270 dispersing agent Substances 0.000 description 7
- 239000011734 sodium Substances 0.000 description 7
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 6
- 239000013078 crystal Substances 0.000 description 6
- 239000012153 distilled water Substances 0.000 description 6
- 229910000029 sodium carbonate Inorganic materials 0.000 description 6
- 229910001415 sodium ion Inorganic materials 0.000 description 6
- 150000003658 tungsten compounds Chemical class 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000004090 dissolution Methods 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 230000001788 irregular Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000035484 reaction time Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 238000001878 scanning electron micrograph Methods 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- 241000219095 Vitis Species 0.000 description 3
- 235000009754 Vitis X bourquina Nutrition 0.000 description 3
- 235000012333 Vitis X labruscana Nutrition 0.000 description 3
- 235000014787 Vitis vinifera Nutrition 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 239000000701 coagulant Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000010802 sludge Substances 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 2
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 239000001099 ammonium carbonate Substances 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical group [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910017604 nitric acid Inorganic materials 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000007415 particle size distribution analysis Methods 0.000 description 2
- 238000005554 pickling Methods 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000001953 recrystallisation Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 description 1
- DDFHBQSCUXNBSA-UHFFFAOYSA-N 5-(5-carboxythiophen-2-yl)thiophene-2-carboxylic acid Chemical compound S1C(C(=O)O)=CC=C1C1=CC=C(C(O)=O)S1 DDFHBQSCUXNBSA-UHFFFAOYSA-N 0.000 description 1
- USFZMSVCRYTOJT-UHFFFAOYSA-N Ammonium acetate Chemical compound N.CC(O)=O USFZMSVCRYTOJT-UHFFFAOYSA-N 0.000 description 1
- 239000005695 Ammonium acetate Substances 0.000 description 1
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000005696 Diammonium phosphate Substances 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910017855 NH 4 F Inorganic materials 0.000 description 1
- 241000219094 Vitaceae Species 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229940043376 ammonium acetate Drugs 0.000 description 1
- 235000019257 ammonium acetate Nutrition 0.000 description 1
- 235000012538 ammonium bicarbonate Nutrition 0.000 description 1
- 235000012501 ammonium carbonate Nutrition 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 description 1
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 description 1
- VBIXEXWLHSRNKB-UHFFFAOYSA-N ammonium oxalate Chemical compound [NH4+].[NH4+].[O-]C(=O)C([O-])=O VBIXEXWLHSRNKB-UHFFFAOYSA-N 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 description 1
- 229910000388 diammonium phosphate Inorganic materials 0.000 description 1
- 235000019838 diammonium phosphate Nutrition 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 235000021021 grapes Nutrition 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 235000019837 monoammonium phosphate Nutrition 0.000 description 1
- 239000006012 monoammonium phosphate Substances 0.000 description 1
- QPJSUIGXIBEQAC-UHFFFAOYSA-N n-(2,4-dichloro-5-propan-2-yloxyphenyl)acetamide Chemical compound CC(C)OC1=CC(NC(C)=O)=C(Cl)C=C1Cl QPJSUIGXIBEQAC-UHFFFAOYSA-N 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000001226 reprecipitation Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000004626 scanning electron microscopy Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- ZNOKGRXACCSDPY-UHFFFAOYSA-N tungsten trioxide Chemical compound O=[W](=O)=O ZNOKGRXACCSDPY-UHFFFAOYSA-N 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G41/00—Compounds of tungsten
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/16—Making metallic powder or suspensions thereof using chemical processes
- B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
- B22F9/20—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/90—Carbides
- C01B32/914—Carbides of single elements
- C01B32/949—Tungsten or molybdenum carbides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G1/00—Methods of preparing compounds of metals not covered by subclasses C01B, C01C, C01D, or C01F, in general
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G41/00—Compounds of tungsten
- C01G41/02—Oxides; Hydroxides
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/30—Particle morphology extending in three dimensions
- C01P2004/45—Aggregated particles or particles with an intergrown morphology
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/51—Particles with a specific particle size distribution
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/54—Particles characterised by their aspect ratio, i.e. the ratio of sizes in the longest to the shortest dimension
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
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Abstract
Description
도 2는 본 발명의 일 구현예에 따른 비정질 텅스텐산 융합체의 제조방법의 단계들을 보다 상세하게 시간의 흐름에 따라 도시하는 순서도이다.
도 3은 종래의 텅스텐산 분말의 SEM 이미지(좌) 및 본 발명의 일 구현예에 따른 텅스텐산 융합체 분말의 SEM 이미지(우)를 비교하여 나타낸 것이다.
도 4 내지 6은 본 발명의 일 구현예에 따라 제조된 텅스텐산 융합체 실시예들의 SEM 이미지를 나타낸 것이다.
도 7 내지 9는 본 발명의 일 구현예에 따라 제조된 텅스텐산 융합체 실시예들의 XRD 피크 결과를 각각 나타낸 것이다.
도 10 내지 12는 본 발명의 일 구현예에 따라 제조된 텅스텐산 융합체 실시예들의 입도 분포 분석 결과를 나타낸 것이다.
텅스텐산염 수용액 |
분산제(제1 첨가제) | 산성용액(치환제) | 용해제(응집제, 제2 첨가제) | 반응온도 | 반응온도반응시간 |
300ml (비중 1.20) |
NH4Cl : 10g | HNO3 : 100ml | H2O2 : 30ml | 45~50℃ | 6hr |
300ml (비중 1.20) |
NH4Cl : 10g | HCl : 100ml | H2O2 : 30ml | 45~50℃ | 6hr |
300ml (비중 1.20) |
NH4Cl : 10g | H2SO4 : 100ml | H2O2 : 30ml | 45~50℃ | 6hr |
300ml (비중 1.20) |
(NH4)2SO4 : 15g | HNO3 : 100ml | H2O2 : 25ml | 45~50℃ | 6hr |
텅스텐산염 수용액 | 분산제 | 산성용액(치환제) | 용해제(응집제) | 반응온도 | 반응시간 |
300ml (비중 1.05) |
NH4Cl : 10g | HNO3 : 100ml | H2O2 : 40ml | 45~50℃ | 6hr |
300ml (비중 1.05) |
NH4Cl : 10g | HCl : 100ml | H2O2 : 40ml | 45~50℃ | 6hr |
300ml (비중 1.05) |
NH4Cl : 10g | H2SO4 : 100ml | H2O2 : 40ml | 45~50℃ | 6hr |
300ml (비중 1.05) |
(NH4)2SO4 : 15g | HNO3 : 100ml | H2O2 : 35ml | 45~50℃ | 6hr |
텅스텐산염 수용액 | 분산제 | 산성용액(치환제) | 용해제(응집제) | 반응온도 | 반응시간 |
300ml(비중 1.15) | NH4Cl : 10g | HNO3 : 100ml | H2O2 : 35ml | 45~50℃ | 6hr |
300ml(비중 1.15) | NH4Cl : 10g | HCl : 100ml | H2O2 : 35ml | 45~50℃ | 6hr |
300ml(비중 1.15) | NH4Cl : 10g | H2SO4 : 100ml | H2O2 : 35ml | 45~50℃ | 6hr |
300ml(비중 1.15) | (NH4)2SO4 : 15g | HNO3 : 100ml | H2O2 : 30ml | 45~50℃ | 6hr |
Claims (14)
- 텅스텐산의 1차 입자를 응집시켜 형성한 비정질 텅스텐산 융합체에 관한 것으로서,
상기 비정질 텅스텐산 융합체는 상기 텅스텐산 1차 입자들 간 상호 연결되어 방상(房狀)의 구조를 형성하고 있는 것을 특징으로 하는, 비정질 텅스텐산 융합체.
- 제1항에 있어서, 상기 텅스텐산의 1차 입자의 형상은 구형, 침상 또는 이들의 조합인 것을 특징으로 하는, 비정질 텅스텐산 융합체.
- 제1항에 있어서, 상기 텅스텐산의 1차 입자는 직경 0.01 내지 2.0 ㎛의 구형 입자인 것을 특징으로 하는, 비정질 텅스텐산 융합체.
- 제1항에 있어서, 상기 텅스텐산의 1차 입자는 길이(L)가 0.01 내지 1.8㎛ 이고,
면적비(aspect ratio, L/D)가 12 내지 24인 침상 입자인 것을 특징으로 하는, 비정질 텅스텐산 융합체.
- 제1항에 있어서, 상기 비정질 텅스텐산 융합체의 직경은 30㎛ 이하인 것을 특징으로 하는, 비정질 텅스텐산 융합체.
- 제1항에 있어서, 상기 비정질 텅스텐산 융합체의, 레이저 회절 산란식 입도 분포 측정법에 의해 측정하여 얻어지는 입도 분포에 의한 D50은 5 내지 12㎛인 것을 특징으로 하는, 비정질 텅스텐산 융합체.
- 제1항에 있어서, 상기 비정질 텅스텐산 융합체의 직경의 표준 편차는 1.5 내지 7㎛인 것을 특징으로 하는, 비정질 텅스텐산 융합체.
- 제1항에 있어서, 상기 텅스텐산 1차 입자의 적어도 80% 이상이 적어도 5개 이상 서로 융착 결합하여 응집된 것을 특징으로 하는, 비정질 텅스텐산 융합체.
- 제2항에 있어서, 상기 텅스텐산 1차 입자는 침상 입자 및 구형 입자로 이루어지고,
상기 텅스텐산 1차 입자는 (침상 입자의 중량):(구형 입자의 중량) 비가 1:0.3 내지 3인 것을 특징으로 하는, 비정질 텅스텐산 융합체.
- 텅스텐산염 수용액에 암모늄화합물을 포함하는 제1 첨가제를 첨가하는 단계;
상기 텅스텐산염 수용액에 산성용액을 투입하는 단계; 및
상기 산성용액을 투입한 이후에, 상기 수용액에 과산화수소 및 불산 중 적어도 하나를 포함하는 제2 첨가제를 첨가하는 단계;를 포함하는 비정질 텅스텐산 융합체의 제조방법으로서,
상기 텅스텐산염 수용액의 비중은 1.01 초과 1.50 미만이고, 상기 산성용액은 상기 텅스텐산염 수용액 100ml당 20~80ml 투입되고, 상기 제1 첨가제는 상기 텅스텐산염 수용액 100ml당 1~10g 첨가되고, 상기 제2 첨가제는 상기 텅스텐산염 수용액 100ml당 1~20ml 첨가되고,
상기 비정질 텅스텐산 융합체는 텅스텐산 1차 입자들 간 상호 연결되어 방상(房狀)의 구조를 형성한 것이고,
상기 텅스텐산의 1차 입자의 형상은 구형, 침상 또는 이들의 조합인 것을 특징으로 하는, 비정질 텅스텐산 융합체의 제조방법.
- 제10항에 있어서,
상기 텅스텐산의 1차 입자의 형상은 침상이거나, 또는 침상 및 구형 형상의 조합인 것을 특징으로 하는, 비정질 텅스텐산 융합체의 제조방법.
- 제1항에 따른 비정질 텅스텐산 융합체 분말을 하소하여 제조된 것을 특징으로 하는 텅스텐 산화물.
- 제1항에 따른 비정질 텅스텐산 융합체 분말을 환원시켜 제조된 것을 특징으로 하는 텅스텐 분말.
- 제1항에 따른 비정질 텅스텐산 융합체 분말을 침탄시켜 제조된 것을 특징으로 하는 탄화 텅스텐 분말.
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