CN115806384A - Optical glass composition, optical glass and preparation method thereof - Google Patents
Optical glass composition, optical glass and preparation method thereof Download PDFInfo
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- CN115806384A CN115806384A CN202211455752.8A CN202211455752A CN115806384A CN 115806384 A CN115806384 A CN 115806384A CN 202211455752 A CN202211455752 A CN 202211455752A CN 115806384 A CN115806384 A CN 115806384A
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- 239000005304 optical glass Substances 0.000 title claims abstract description 79
- 239000000203 mixture Substances 0.000 title claims abstract description 55
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 46
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 claims abstract description 44
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 40
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 40
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 38
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims abstract description 38
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 claims abstract description 31
- 229910003437 indium oxide Inorganic materials 0.000 claims abstract description 27
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 25
- 239000011787 zinc oxide Substances 0.000 claims abstract description 23
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 claims abstract description 22
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 22
- 235000019837 monoammonium phosphate Nutrition 0.000 claims abstract description 22
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 claims abstract description 21
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 claims abstract description 21
- 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 20
- 229910021538 borax Inorganic materials 0.000 claims abstract description 20
- 238000010438 heat treatment Methods 0.000 claims abstract description 20
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 20
- 230000008569 process Effects 0.000 claims abstract description 20
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 20
- 235000010339 sodium tetraborate Nutrition 0.000 claims abstract description 20
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 20
- BSVBQGMMJUBVOD-UHFFFAOYSA-N trisodium borate Chemical compound [Na+].[Na+].[Na+].[O-]B([O-])[O-] BSVBQGMMJUBVOD-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000006004 Quartz sand Substances 0.000 claims abstract description 19
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 19
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 claims abstract description 19
- 229910052808 lithium carbonate Inorganic materials 0.000 claims abstract description 19
- ZKATWMILCYLAPD-UHFFFAOYSA-N niobium pentoxide Inorganic materials O=[Nb](=O)O[Nb](=O)=O ZKATWMILCYLAPD-UHFFFAOYSA-N 0.000 claims abstract description 19
- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000004323 potassium nitrate Substances 0.000 claims abstract description 19
- 235000010333 potassium nitrate Nutrition 0.000 claims abstract description 19
- 239000000843 powder Substances 0.000 claims abstract description 19
- BDAGIHXWWSANSR-NJFSPNSNSA-N hydroxyformaldehyde Chemical compound O[14CH]=O BDAGIHXWWSANSR-NJFSPNSNSA-N 0.000 claims abstract description 18
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910000018 strontium carbonate Inorganic materials 0.000 claims abstract description 18
- 238000002844 melting Methods 0.000 claims abstract description 11
- 230000008018 melting Effects 0.000 claims abstract description 11
- 238000000137 annealing Methods 0.000 claims abstract description 7
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Chemical compound [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 claims description 36
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 32
- 239000011707 mineral Substances 0.000 claims description 32
- 238000000354 decomposition reaction Methods 0.000 claims description 28
- 229910052845 zircon Inorganic materials 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 229910002651 NO3 Inorganic materials 0.000 claims description 11
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 11
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 10
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 10
- 238000001704 evaporation Methods 0.000 claims description 10
- 230000008020 evaporation Effects 0.000 claims description 10
- 239000008187 granular material Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 claims description 5
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 5
- 239000004115 Sodium Silicate Substances 0.000 claims description 4
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims description 4
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims description 4
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 4
- 238000005303 weighing Methods 0.000 claims description 4
- 239000011230 binding agent Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- AYJRCSIUFZENHW-DEQYMQKBSA-L barium(2+);oxomethanediolate Chemical compound [Ba+2].[O-][14C]([O-])=O AYJRCSIUFZENHW-DEQYMQKBSA-L 0.000 abstract 1
- 239000011521 glass Substances 0.000 description 91
- 239000007789 gas Substances 0.000 description 30
- 239000002994 raw material Substances 0.000 description 26
- 239000000126 substance Substances 0.000 description 8
- 239000006060 molten glass Substances 0.000 description 7
- 230000008859 change Effects 0.000 description 5
- 238000002425 crystallisation Methods 0.000 description 5
- 230000008025 crystallization Effects 0.000 description 5
- 238000004031 devitrification Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 5
- 239000006185 dispersion Substances 0.000 description 4
- 239000012071 phase Substances 0.000 description 4
- 229910052796 boron Inorganic materials 0.000 description 3
- 230000005587 bubbling Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000002834 transmittance Methods 0.000 description 3
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- 229910021193 La 2 O 3 Inorganic materials 0.000 description 2
- 229910010413 TiO 2 Inorganic materials 0.000 description 2
- 229910052788 barium Inorganic materials 0.000 description 2
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 229910052681 coesite Inorganic materials 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 238000010907 mechanical stirring Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 229910052682 stishovite Inorganic materials 0.000 description 2
- 229910052905 tridymite Inorganic materials 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 125000005587 carbonate group Chemical group 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 description 1
- YWEUIGNSBFLMFL-UHFFFAOYSA-N diphosphonate Chemical compound O=P(=O)OP(=O)=O YWEUIGNSBFLMFL-UHFFFAOYSA-N 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000006066 glass batch Substances 0.000 description 1
- 239000000156 glass melt Substances 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910052747 lanthanoid Inorganic materials 0.000 description 1
- 150000002602 lanthanoids Chemical class 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000013081 microcrystal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- DLYUQMMRRRQYAE-UHFFFAOYSA-N phosphorus pentoxide Inorganic materials O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- 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
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Landscapes
- Glass Compositions (AREA)
Abstract
The invention relates to an optical glass composition, optical glass and a preparation method thereof. The optical glass composition comprises quartz sand, alumina powder, anhydrous sodium borate, lithium carbonate, sodium carbonate, potassium nitrate, calcium carbonate, magnesium oxide, strontium carbonate, barium carbonate, titanium dioxide, zirconite, zinc oxide, ammonium dihydrogen phosphate, lanthanum oxide, yttrium oxide, indium oxide, niobium pentoxide and other components. The composition is used as raw batch materials, the gas rate is higher and is more than 15%, the cooked batch materials are obtained after heating treatment, and the gas rate is controlled to be 12-15%; and carrying out processes such as melting, clarifying, forming, annealing and the like on the cooked batch to obtain the chemically uniform and optically uniform optical glass or the product thereof. In the production process, no 'cylinder' phenomenon occurs.
Description
Technical Field
The invention relates to the field of optical glass, in particular to an optical glass composition, optical glass and a preparation method thereof.
Background
The phenomenon of 'vat blowing' is a phenomenon commonly encountered in the production of optical glass, mainly because the batch of the optical glass is mostly composed of carbonate, borate, sulfate and nitrate mineral raw materials, the gas rate of the batch is higher, so that the gas reaches or even exceeds the supersaturation degree of the glass in molten glass in the melting or forming process, and when the molten glass is subjected to rapid temperature change, rapid convection, mechanical stirring, bubbling and the like, CO (carbon monoxide) is generated 2 、O 2 、H 2 O、SO 2 、NO X When the gas is precipitated due to the change of solubility, bubbles are generated due to the larger surface tension of the molten glass, the bubbles carry the molten glass to form a large amount of foams in the furnace, and the foams are accumulated at the bottom of the crucible or on the wall of the crucible and cannot be removedThe quality of the glass is influenced, the liquid level of the glass fluctuates, the erosion of the glass liquid to the crucible wall is accelerated, the service life of the crucible is shortened, and even more, the glass overflows out of the furnace to cause furnace shutdown, so that the normal production is influenced.
The 'shooting' phenomenon mainly occurs in optical glass with the brand numbers of dense crown, dense flint, dense barium flint and the like, and in order to produce the optical glass with special performance, the conventional solution scheme 1: the gas ratio in the glass batch is reduced, generally to less than 15%, and it is common practice to reduce the amount of carbonate, borate, sulfate, nitrate-based mineral raw materials by changing the type of mineral raw materials to be introduced and by using mineral raw materials which contain no or little gas produced by decomposition, such as B 2 O 3 The introduced raw material is changed into boric anhydride, P from anhydrous sodium borate or boric acid 2 O 5 The introduced raw material is changed from ammonium dihydrogen phosphate to phosphorus pentoxide, but the use types of mineral raw materials are greatly limited, and the production cost is increased or the production difficulty is increased. The second method is to change the optical glass formula and reduce B 2 O 3 、P 2 O 5 And the like, but this sacrifices some properties of the optical glass, and it is difficult to obtain the optical glass having desired properties, for example, increase the coefficient of thermal expansion of the optical glass, and decrease the refractive index of the optical glass. Conventional solution 2: addition of K to glass formulations 2 O、Na 2 O, pbO and other oxides which reduce the surface tension of the glass are beneficial to the bubbles to be broken or lifted and discharged from the molten glass when the bubbles are generated, but the method cannot fundamentally solve the problem of 'foaming cylinder', not only can change the performance of the optical glass, but also has little effect, and often needs to be assisted with technical measures such as stirring or bubbling and the like.
Disclosure of Invention
The technical problem solved by the invention is as follows:
provides an optical glass composition, optical glass and a preparation method thereof, aiming at solving the problem of 'foaming' by a method of reducing the gas rate of batch.
In order to solve the technical problems, the invention adopts the following technical scheme:
an optical glass composition comprising, by weight of minerals: quartz sand: 0.5 to 20 portions; titanium dioxide: 3 to 25 parts; also comprises one or more of the following components in combination:
anhydrous sodium borate: 0.1 to 36 parts; alumina powder: 0.1 to 5 parts;
lithium carbonate: 0.1 to 25 parts; sodium carbonate: 0.1 to 26 parts; potassium nitrate: 0.1 to 28 parts;
calcium carbonate: 0.1 to 36 parts; magnesium oxide: 0.1 to 5 parts; strontium carbonate: 0.1 to 11 parts; barium carbonate: 0.1 to 26 parts;
zircon: 0.1 to 20 parts; zinc oxide: 0.1 to 5 parts; ammonium dihydrogen phosphate: 0.1 to 40 parts;
lanthanum oxide: 0.1 to 50 parts; yttrium oxide: 0.1 to 30 parts; indium oxide (II): 0.1 to 18 parts; niobium pentoxide: 0.1 to 46 parts.
As a preferred embodiment, the optical glass composition, measured on a mineral weight basis, comprises: quartz sand: 3 to 20 parts; titanium dioxide: 3 to 25 parts; also comprises one or more combinations of the following components:
anhydrous sodium borate: 0.1 to 36 parts; alumina powder: 0.1 to 5 parts;
lithium carbonate: 0.1 to 25 parts; sodium carbonate: 0.1 to 26 parts; potassium nitrate: 0.1 to 28 parts;
calcium carbonate: 0.1 to 36 parts; magnesium oxide: 0.1 to 5 parts; strontium carbonate: 0.1 to 7 parts; barium carbonate: 0.1 to 26 parts;
zircon: 0.1 to 16 parts; zinc oxide: 0.1 to 2 parts; ammonium dihydrogen phosphate: 0.1 to 40 parts;
lanthanum oxide: 0.1 to 50 parts; yttrium oxide: 0.1 to 30 parts; indium oxide (II): 0.1 to 18 parts; niobium pentoxide: 0.1 to 46 parts.
As a preferred embodiment, the optical glass composition, measured on a mineral weight basis, comprises: quartz sand: 0.5 to 20 portions; titanium dioxide: 3 to 25 parts; also comprises one or more combinations of the following components:
anhydrous sodium borate: 0.1 to 36 parts; alumina powder: 0.1 to 5 parts;
lithium carbonate: 0 to 12.4 parts; sodium carbonate: 0.1 to 26 parts; potassium nitrate: 0.1 to 28 parts;
calcium carbonate: 9 to 36 parts; magnesium oxide: 0.1 to 5 parts; strontium carbonate: 0.1 to 5.7 portions; barium carbonate: 0.1 to 10.3 portions;
zircon: 0 to 15.3 parts; zinc oxide: 0.1 to 5 parts; ammonium dihydrogen phosphate: 0.1 to 40 parts;
lanthanum oxide: 0.1 to 50 parts; yttrium oxide: 0.1 to 30 parts; indium oxide (II): 0.1 to 18 parts; niobium pentoxide: 0.1 to 22 parts.
As a preferred embodiment, the optical glass composition, measured on a mineral weight basis, comprises: quartz sand: 0.5 to 20 portions; titanium dioxide: 3 to 21 parts; also comprises one or more combinations of the following components:
anhydrous sodium borate: 0.1 to 26 parts; alumina powder: 0.1 to 5 parts;
lithium carbonate: 0.1 to 25 parts; sodium carbonate: 0.1 to 14.2 portions; potassium nitrate: 0.1 to 25.8 portions;
calcium carbonate: 0 to 17.9 parts; magnesium oxide: 0.1 to 5 parts; strontium carbonate: 0.1 to 11 parts; barium carbonate: 6.4 to 26 parts;
zircon: 1.5 to 20 parts; zinc oxide: 0.1 to 5 parts; ammonium dihydrogen phosphate: 0.1 to 40 parts;
lanthanum sesquioxide: 0 to 30 parts; yttrium oxide: 0.1 to 30 parts; indium oxide (II): 0.1 to 18 parts; niobium pentoxide: 0.1 to 30 parts.
As a preferred embodiment, the optical glass composition, measured on a mineral weight basis, comprises: quartz sand: 0.5 to 12 parts; titanium dioxide: 3 to 15 parts; also comprises one or more of the following components in combination:
alumina powder: 0.1 to 5 parts; anhydrous sodium borate: 0.1 to 36 parts;
lithium carbonate: 0.1 to 12.5 parts; sodium carbonate: 0.1 to 26 parts; potassium nitrate: 0.1 to 26 parts;
calcium carbonate: 0.1 to 18 parts; magnesium oxide: 0.1 to 3 parts; strontium carbonate: 0.1 to 11 parts; barium carbonate: 0.1 to 20 parts;
zircon: 0.1 to 8 parts; zinc oxide: 0.1 to 3 parts; ammonium dihydrogen phosphate: 0.1 to 33 parts;
lanthanum sesquioxide: 10 to 50 parts; yttrium oxide: 0.1 to 30 parts; indium oxide (II): 0.1 to 18 parts; niobium pentoxide: 0.1 to 12 parts.
Further, the optical glass composition is used as a raw batch, and the gas rate is more than 15%; heating to partially or completely complete the processes of water evaporation, carbonate decomposition and/or sulfate decomposition and/or nitrate decomposition of the raw batch material to obtain a cooked batch material, wherein the gas rate is 12-15%.
The invention also provides optical glass which is prepared by taking the optical glass composition in any embodiment as a raw batch.
Further, the raw batch is heated to 500-1200 ℃, so that the raw batch partially or completely completes the processes of water evaporation, carbonate decomposition and/or sulfate decomposition and/or nitrate decomposition to obtain a cooked batch, and the optical glass is prepared from the cooked batch.
The invention also provides a preparation method of the optical glass, which comprises the following steps:
step one, preparation of raw batch: the raw batch materials are obtained by weighing and mixing the minerals according to the composition of the optical glass composition of any one of the above embodiments;
step two, pretreating the raw batch to obtain granular, strip or block batch;
step three, heating the pretreated batch mixture to obtain a cooked batch mixture:
and step four, preparing the optical glass from the cooked batch.
Further, during pretreatment, one or more of sodium carboxymethylcellulose, sodium silicate aqueous solution or water is selected as a binder, so that the pretreated raw batch materials are bound together into granules, strips or blocks; during heating treatment, the raw batch is heated to 500-1200 ℃ for 30min-4 h, so that the raw batch partially or completely completes the processes of water evaporation, carbonate decomposition and/or sulfate decomposition and/or nitrate decomposition; the optical glass is prepared by melting, clarifying, forming and annealing the cooked batch to obtain the optical glass or the product thereof.
Technical effects of the invention
The optical glass composition is raw batch, the gas rate is higher and is more than 15%, a cooked batch is obtained after heating treatment, and the gas rate is controlled to be 12-15%; and carrying out processes such as melting, clarifying, forming, annealing and the like on the cooked batch to obtain the chemically uniform and optically uniform optical glass or the product thereof. In the production process, no cylinder phenomenon occurs.
Detailed Description
In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention is described in further detail below. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention. The experimental procedures described in the following examples are conventional unless otherwise specified; the reagents and materials are commercially available, unless otherwise specified.
The endpoints and any values of the endpoints disclosed herein are not limited to the precise range or value, and such ranges or values should be understood to encompass values close to those ranges or values. For numerical ranges, each new numerical range or ranges can be obtained by combining the values between the endpoints of each range, between the endpoints of each range and the individual values, and between the individual values with each other, and these numerical ranges should be construed as being specifically disclosed herein.
As an example, the optical glass composition of the present invention, measured on a mineral weight basis, comprises: quartz sand: 0.5 to 20 portions; titanium dioxide: 3 to 25 parts; also comprises one or more combinations of the following components: anhydrous sodium borate: 0.1 to 36 parts; alumina powder: 0.1 to 5 parts; lithium carbonate: 0.1 to 25 parts; sodium carbonate: 0.1 to 26 parts; potassium nitrate: 0.1 to 28 parts; calcium carbonate: 0.1 to 36 parts; magnesium oxide: 0.1 to 5 parts; strontium carbonate: 0.1 to 11 parts; barium carbonate: 0.1 to 26 parts; zircon: 0.1 to 20 parts; zinc oxide: 0.1 to 5 parts; ammonium dihydrogen phosphate: 0.1 to 40 parts; lanthanum oxide: 0.1 to 50 parts; yttrium oxide: 0.1 to 30 parts; indium oxide (II): 0.1 to 18 parts; niobium pentoxide: 0.1 to 46 parts.
As a preferred embodiment, the optical glass composition of the present invention comprises, by weight of minerals: the method comprises the following steps: quartz sand: 3 to 20 parts; titanium dioxide: 3 to 25 parts; also comprises one or more combinations of the following components: anhydrous sodium borate: 0.1 to 36 parts; alumina powder: 0.1 to 5 parts; lithium carbonate: 0.1 to 25 parts; sodium carbonate: 0.1 to 26 parts; potassium nitrate: 0.1 to 28 parts; calcium carbonate: 0.1 to 36 parts; magnesium oxide: 0.1 to 5 parts; strontium carbonate: 0.1 to 7 parts; barium carbonate: 0.1 to 26 parts; zircon: 0.1 to 16 portions; zinc oxide: 0.1 to 2 parts; ammonium dihydrogen phosphate: 0.1 to 40 parts; lanthanum oxide: 0.1 to 50 parts; yttrium oxide: 0.1 to 30 parts; indium oxide: 0.1 to 18 parts; niobium pentoxide: 0.1 to 46 parts.
As a preferred embodiment, the optical glass composition of the present invention comprises, by weight of minerals: quartz sand: 0.5 to 20 portions; titanium dioxide: 3 to 25 parts; also comprises one or more combinations of the following components: anhydrous sodium borate: 0.1 to 36 parts; alumina powder: 0.1 to 5 parts; lithium carbonate: 0 to 12.4 parts; sodium carbonate: 0.1 to 26 parts; potassium nitrate: 0.1 to 28 parts; calcium carbonate: 9 to 36 parts; magnesium oxide: 0.1 to 5 parts; strontium carbonate: 0.1 to 5.7 portions; barium carbonate: 0.1 to 10.3 parts; zircon: 0 to 15.3 parts; zinc oxide: 0.1 to 5 parts; ammonium dihydrogen phosphate: 0.1 to 40 parts; lanthanum oxide: 0.1 to 50 parts; yttrium oxide: 0.1 to 30 parts; indium oxide: 0.1 to 18 parts; niobium pentoxide: 0.1 to 22 parts.
As a preferred embodiment, the optical glass composition of the present invention comprises, by weight of minerals: quartz sand: 0.5 to 20 portions; titanium dioxide: 3 to 21 parts; also comprises one or more of the following components in combination: anhydrous sodium borate: 0.1 to 26 parts; alumina powder: 0.1 to 5 parts; lithium carbonate: 0.1 to 25 parts; sodium carbonate: 0.1 to 14.2 parts; potassium nitrate: 0.1 to 25.8 parts; calcium carbonate: 0 to 17.9 parts; magnesium oxide: 0.1 to 5 parts; strontium carbonate: 0.1 to 11 parts; barium carbonate: 6.4 to 26 parts; zircon: 1.5 to 20 parts; zinc oxide: 0.1 to 5 parts; ammonium dihydrogen phosphate: 0.1 to 40 parts; lanthanum sesquioxide: 0 to 30 parts; yttrium oxide: 0.1 to 30 parts; indium oxide (II): 0.1 to 18 parts; niobium pentoxide: 0.1 to 30 parts.
As a preferred embodiment, the optical glass composition of the present invention comprises, by weight of minerals: quartz sand: 0.5 to 12 parts; titanium dioxide: 3 to 15 parts; also comprises one or more combinations of the following components: alumina powder: 0.1 to 5 parts; anhydrous sodium borate: 0.1 to 36 parts; lithium carbonate: 0.1 to 12.5 parts; sodium carbonate: 0.1 to 26 parts; potassium nitrate: 0.1 to 26 parts; calcium carbonate: 0.1 to 18 parts; magnesium oxide: 0.1 to 3 parts; strontium carbonate: 0.1 to 11 parts; barium carbonate: 0.1 to 20 parts; zircon: 0.1 to 8 parts; zinc oxide: 0.1 to 3 parts; ammonium dihydrogen phosphate: 0.1 to 33 parts; lanthanum oxide: 10 to 50 parts; yttrium oxide: 0.1 to 30 parts; indium oxide: 0.1 to 18 parts; niobium pentoxide: 0.1 to 12 portions.
In the above examples, the silica sand is a raw material for introducing SiO2, and SiO2 is a basic component of glass and constitutes a basic skeleton structure of glass. In various embodiments of the invention, the content of the quartz sand is 0.5 to 20 parts, when the content is too low, the network structure of the glass is broken, the stability of the glass is poor, when the content is too high, the high-temperature viscosity of the glass is too high, the phase splitting tendency is aggravated, and a silicon-rich crystalline phase is separated out, so that the transmittance of the glass is reduced, and the haze is increased.
The alumina powder is Al 2 O 3 Introducing the raw material, al 2 O 3 The devitrification resistance of the glass can be improved and the mechanical strength of the glass and its products can be improved. In various embodiments of the invention, the content of the alumina powder can be 0 to 5 parts, and when the content is too high, the glass viscosity is obviously increased, and the production difficulty is increased.
Anhydrous sodium borate is mainly B 2 O 3 Introducing raw materials while introducing Na 2 O，B 2 O 3 The glass network forms oxide, which can improve the water resistance, acid resistance, alkali resistance and other performances of the glass, reduce the linear thermal expansion coefficient of the glass and improve the chemical stability of the glass. In various embodiments of the invention, the content of the anhydrous sodium borate can be 0-36 parts, when the content is too high, boron is volatile, so that the content of boron in the surface layer and the inner part of the glass liquid is deviated, and the chemically uniform optical glass cannot be obtained.
Lithium carbonate is Li 2 Introduction raw material of O, li 2 O is the oxide of the external body of the glass network, can obviously reduce the high-temperature viscosity of the glass and improve the melting performance of the glass. In various embodiments of the invention, the lithium carbonate content can be 0-25 parts, when the lithium carbonate content is too high, the glass crystallization tendency is increased, a lithium-containing microcrystal phase is precipitated, and the glass transmittance is reduced and even devitrification is carried out.
The sodium carbonate is Na 2 Introduction of O as raw material, na 2 O is a glass network external oxide, canFree oxygen is provided for the glass, the network structure of the glass is damaged, the high-temperature viscosity of the glass can be reduced, and the glass transition temperature of the glass is reduced. In various embodiments of the invention, the content of sodium carbonate can be 0 to 26 parts, and when the content is too high, the chemical stability of the glass is poor, and the mechanical property is reduced.
Potassium nitrate is K 2 Introduction of O starting Material, K 2 And O is an oxide of the glass network outer body, so that the crystallization tendency of the glass can be reduced, and the transmittance of the glass can be improved. In various embodiments of the invention, the content of potassium nitrate can be 0-28 parts, and when the content is too high, the linear thermal expansion coefficient of the glass is increased, and the thermal stability is poor.
Calcium carbonate is an introduced raw material of CaO, which can improve devitrification resistance and mechanical properties of the high-refractive-index glass and adjust optical constants of the glass. In various embodiments of the invention, the content of calcium carbonate can be 0-36 parts, and when the content is too high, the linear thermal expansion coefficient of the glass is increased, and the Young modulus is reduced.
The magnesium oxide is an introduced raw material of MgO, and the MgO can improve the fracture toughness of the glass, reduce the crystallization tendency of the glass and reduce the density of the glass. In various embodiments of the invention, the content of the magnesium oxide can be 0 to 5 parts, and when the content is too high, the refractive index of the glass is reduced, and the dispersion is increased.
Strontium carbonate is an introduced raw material of SrO, and the SrO can balance the chemical composition of the glass, reduce the degree of cylinder expansion of the glass and reduce the crystallization tendency of the glass. In various embodiments of the invention, the content of strontium carbonate can be 0 to 11 parts, and when the content is too high, the density of the glass is increased, and the weight is increased.
Barium carbonate is an introduced raw material of BaO, and BaO can improve the refractive index of glass and stabilize other components in the glass component. In various embodiments of the invention, the content of barium carbonate can be 0 to 26 parts, and when the content is too high, the density of the glass is increased, and the linear thermal expansion coefficient is increased.
The titanium dioxide being TiO 2 Introduction of raw Material, tiO 2 Can greatly increase the refractive index of the glass on the premise of not increasing the density of the glass, reduce the Abbe number, have high dispersion effect, reduce the liquidus temperature of the glass and improveChemical durability of glass. In various embodiments of the invention, the content of the titanium dioxide is 3 to 25 parts, and when the content is too low, tiO cannot be exerted 2 High refractive index and high dispersion in glass, and high content of TiO 2 Easy agglomeration leads to phase separation of the glass to induce crystallization of the glass or other glass components, and in addition, tiO 2 The glass is easy to yellow and loses part of optical performance.
The zircon being ZrO 2 Of the introduced raw material, zrO 2 Can improve the optical performance of the glass and improve the chemical stability of the glass. In various embodiments of the invention, the content of the zircon can be 0 to 20 parts, and the zircon is added into some aluminum glass, so that the liquidus temperature of the glass is too high to cause devitrification, and the content is as low as possible or even 0 part.
The zinc oxide is an introduced raw material of ZnO, the ZnO can effectively inhibit the reduction of the refractive index of the glass, improve the mechanical property of the glass, improve the central modulus of the glass, and react with high-refractive-index substances to stabilize the high-refractive-index substances so as to prevent the substances from agglomerating and crystallizing. In various embodiments of the invention, the content of zinc oxide can be 0 to 5 parts, and when the content is too high, zinc oxide is easy to react with alumina to generate a zinc spinel crystal phase, which affects the optical performance of the glass.
Ammonium dihydrogen phosphate is P 2 O 5 Introduction of raw Material, P 2 O 5 Can participate in the construction of a glass network framework structure, can effectively reduce the linear thermal expansion coefficient of glass, and improves the forming performance of the glass. In various embodiments of the invention, the content of ammonium dihydrogen phosphate may be 0 to 40 parts, when the content is too high, ammonia gas generated by decomposition of ammonium dihydrogen phosphate affects working environment, and the refractive index of the glass is reduced, and in the glass of a part of the system, the content of ammonium dihydrogen phosphate should be as low as possible or even 0.
Lanthanum sesquioxide is La 2 O 3 Introducing the raw material of La 2 O 3 The refractive index of the glass can be improved on the premise of not improving the dispersion of the glass, and the chemical stability of the glass is improved. In various embodiments of the invention, the content of the lanthanum oxide can be 0 to 50 parts, and the lanthanum oxide can be used together with other lanthanide rare earth metal oxide minerals with excessive contentWhen the temperature is high, the thermal stability of the glass is lowered and the density of the glass is increased.
Yttrium oxide of Y 2 O 3 Introduction of raw Material, Y 2 O 3 The refractive index of the glass can be effectively improved, and compared with the lanthanum oxide, indium oxide and niobium pentoxide rare earth metal oxide minerals, the yttrium oxide has the smallest influence on the density of the glass, and the yttrium oxide can obtain better effect in certain glasses requiring high refraction and low density. In various embodiments of the invention, the content of yttrium oxide can be 0 to 30 parts, and when the content is too high, the production cost of the glass is increased.
Indium sesquioxide is In 2 O 3 Introducing a raw material of In 2 O 3 Can improve the refractive index of the glass and provide certain color, and can be used in colored glass application such as sunglasses and the like. In various embodiments of the invention, the content of the indium trioxide can be 0 to 18 parts, and when the content is too high, the color is too heavy, and part of optical performance is lost.
Niobium pentoxide is Nb 2 O 5 Introduced raw material of, nb 2 O 5 The refractive index of the glass is increased, the Abbe number is reduced, the devitrification resistance of the glass is improved, and the increase of the liquidus temperature is suppressed. In various embodiments of the invention, the content of niobium pentoxide can be 0 to 46 parts, and when the content is too high, the production cost is increased.
The preparation method of the optical glass comprises the following steps:
step one, preparation of raw batch: weighing and mixing minerals according to the designed composition;
the raw batch materials are prepared by weighing and mixing the mineral raw materials of the components in the optical glass composition in the embodiment, and are not subjected to other processing treatment, namely heating treatment. The raw compound has high gas rate, especially the optical glass with gas rate more than 15%, especially the optical glass with the brand of dense crown, dense flint and dense barium flint, and is mainly used for preparing the optical glass with special performance of high refractive index, low scattering and low density.
If raw batch materials are directly melted into molten glass at high temperature, water evaporation can occurThe processes of decomposition of carbonate, decomposition of nitrate, solid-phase sintering, melting, etc., during which CO is generated 2 、O 2 、H 2 O、SO 2 、NO X When the glass melt is subjected to rapid temperature change, rapid convection, mechanical stirring, bubbling, or the like, the dissolved gas described later is precipitated as bubbles due to drastic changes in solubility, and the glass quality is affected. Therefore, a pretreatment is necessary.
Step two, pretreatment of raw batch: the raw mineral batch is pretreated into granules, strips or blocks.
The pretreatment mode can be one or more of a granulation method, an extrusion method or a ball pressing method or other pretreatment methods in the prior art, and the batch materials after pretreatment are bonded together to form granules, strips or blocks, so that dust flying pollution caused by undersize particle sizes of the raw batch materials is prevented in the subsequent heating treatment process of the raw batch materials, and the process difficulty is prevented from being increased.
The pretreatment in the invention can adopt sodium carboxymethylcellulose (CMC), sodium silicate aqueous solution or water as a binder, and aims to enhance the plasticity of the raw batch, enable the raw batch to be easily pretreated into granules, strips or blocks, keep the shape of the batch in the subsequent heating treatment process of the raw batch and facilitate transportation and treatment.
Step three, heating the raw batch to obtain a cooked batch: and adding the pretreated raw batch mixture to 500-1200 ℃ for 30min-4 h to partially or completely complete the processes of water evaporation, carbonate decomposition and/or sulfate decomposition and/or nitrate decomposition of the raw batch mixture. The heating treatment mode can adopt one or more of a fluidized bed, a high-temperature electric furnace and high-temperature air heating, and can also adopt other heating equipment in the prior art.
The cooked batch is formed by processing and treating raw batch, and the gas rate of the treated cooked batch is 12-15%. Raw ingredient gas ratioAt 15%, CO 2 、O 2 、H 2 O、SO 2 、NO X When the gas is not fully discharged, the phenomenon of cylinder expansion is caused, when the gas rate is less than 12 percent, the gas rate is insufficient, bubbles are difficult to discharge when the molten glass is clarified, and the quality of the glass is influenced.
The temperature of the raw batch in the invention is 500-1200 ℃, so that the raw batch can partially or completely complete the processes of water evaporation, carbonate decomposition and/or sulfate decomposition and/or nitrate decomposition, thereby enabling CO to be generated 2 、O 2 、H 2 O、SO 2 、NO X And before the glass is melted, the gas is discharged from the batch in advance, so that the gas rate of the batch is reduced, and the aim of the invention is fulfilled. The temperature of the heating treatment is not too low, and when the temperature is too low, only the water evaporation process can be completed, and the energy supply is insufficient in the silicate sintering process. The temperature of the heating treatment is not suitable to be too high, when the temperature is too high, the reaction is too violent, the gas rate is difficult to control, and in addition, the too high temperature can cause the melting of the batch materials, the batch materials are bonded together or are bonded in a container for holding the batch materials, so the production difficulty is increased.
The heating treatment time of the raw batch is 30min to 4h, the time is too short, the reaction time is insufficient, the aim of the invention is difficult to achieve, and the time is too long, so that energy is wasted.
Gas rate of cooked batch: the gas rate of the heated cooked batch is controlled to be 12-15%.
The gas rate calculation method comprises the following steps:
wherein m is Raw material Is the raw batch mass, m Cooked food Is the quality of the processed cooked batch.
Step four, glass preparation: the processes of melting, clarifying, forming, annealing and the like of the optical glass are completed, and the chemically uniform and optically uniform optical glass or the product thereof is obtained.
The present invention is illustrated in detail by the following examples, which are, unless otherwise specified, conventional in the art.
Examples 1 to 14 are examples within the mineral composition range of the present invention.
Table 1 optical glass compositions of examples 1 to 7
TABLE 2 optical glass compositions of examples 8 to 14
Example 15
The preparation method of the optical glass comprises the following steps:
preparation of raw batch: the weight of the mineral is: quartz sand: 0.5 part; anhydrous sodium borate: 1.5 parts; sodium carbonate: 6 parts of (1); potassium nitrate: 25.8 parts; barium carbonate: 19.3 parts of; titanium dioxide: 15 parts of (1); zircon: 1.5 parts; zinc oxide: 1 part; ammonium dihydrogen phosphate: 32.6 parts; lanthanum sesquioxide: 30.1 parts. The minerals are respectively weighed according to the designed components and are evenly mixed, and the gas rate of the raw batch is 33.2 percent through experiments;
pretreatment of raw batch: adding 0.1wt% sodium carboxymethylcellulose aqueous solution into raw batch, mixing, and granulating with granulator to obtain spherical granule with diameter of 6-8 mm;
heating the raw batch to obtain cooked batch: placing the pretreated raw batch mixture at 800 ℃ for treatment for 4h, and then naturally cooling to room temperature; gas rate of cooked batch: through experiments, the gas rate is 13.2%;
preparing glass: and carrying out processes such as melting, clarifying, forming, annealing and the like on the cooked batch to obtain the optical glass or the product thereof with uniform chemistry and uniform optics. In the production process, no cylinder phenomenon occurs.
Example 16
The preparation method of the optical glass comprises the following steps:
preparation of raw batch: the weight of the mineral is: quartz sand: 12 parts of (a); alumina powder: 5 parts of a mixture; sodium carbonate: 26 parts of (1); calcium carbonate: 17.9 parts; titanium dioxide: 3 parts of a mixture; zircon: 3 parts of a mixture; zinc oxide: 2 parts of a mixture; lanthanum sesquioxide: 0.1 to 50 parts; yttrium oxide: 50 parts of the components. The minerals are respectively weighed according to the designed components and are evenly mixed, and the gas rate of the raw batch is 18.9 percent through experiments;
pretreatment of raw batch: adding 4wt% sodium silicate aqueous solution into the raw batch, uniformly mixing, and pressing into a plate-shaped sample with the length of 200mm 300mm 3mm (length, width and height) by using a briquetting machine;
heating the raw batch to obtain cooked batch: placing the pretreated raw batch mixture at 1200 ℃ for treatment for 30min, and then naturally cooling to room temperature to obtain a cooked batch mixture, wherein the gas ratio of the cooked batch mixture is as follows: through experiments, the gas rate is 14.1%;
preparing glass: the cooked batch is subjected to processes of melting, clarification, molding, annealing and the like to obtain the chemically uniform and optically uniform optical glass or the product thereof. In the production process, no cylinder phenomenon occurs.
Having described preferred embodiments of the present invention in detail, it is to be understood that the invention is not limited in its application to the details of the foregoing description, as modifications and variations may be suggested to those skilled in the art, and it is intended to cover all such modifications and variations as fall within the true spirit and scope of the appended claims.
Claims (10)
1. An optical glass composition comprising, by weight of minerals: quartz sand: 0.5 to 20 portions; titanium dioxide: 3 to 25 parts; also comprises one or more combinations of the following components:
anhydrous sodium borate: 0.1 to 36 parts; alumina powder: 0.1 to 5 parts;
lithium carbonate: 0.1 to 25 parts; sodium carbonate: 0.1 to 26 parts; potassium nitrate: 0.1 to 28 parts;
calcium carbonate: 0.1 to 36 parts; magnesium oxide: 0.1 to 5 parts; strontium carbonate: 0.1 to 11 parts; barium carbonate: 0.1 to 26 parts;
zircon: 0.1 to 20 parts; zinc oxide: 0.1 to 5 parts; ammonium dihydrogen phosphate: 0.1 to 40 parts;
lanthanum oxide: 0.1 to 50 parts; yttrium oxide: 0.1 to 30 parts; indium oxide (II): 0.1 to 18 parts; niobium pentoxide: 0.1 to 46 parts.
2. The optical glass composition according to claim 1, wherein the optical glass composition comprises, by weight of minerals: quartz sand: 3 to 20 parts; titanium dioxide: 3 to 25 parts; also comprises one or more combinations of the following components:
anhydrous sodium borate: 0.1 to 36 parts; alumina powder: 0.1 to 5 parts;
lithium carbonate: 0.1 to 25 parts; sodium carbonate: 0.1 to 26 parts; potassium nitrate: 0.1 to 28 parts;
calcium carbonate: 0.1 to 36 parts; magnesium oxide: 0.1 to 5 parts; strontium carbonate: 0.1 to 7 parts; barium carbonate: 0.1 to 26 parts;
zircon: 0.1 to 16 parts; zinc oxide: 0.1 to 2 parts; ammonium dihydrogen phosphate: 0.1 to 40 parts;
lanthanum sesquioxide: 0.1 to 50 parts; yttrium oxide: 0.1 to 30 parts; indium oxide (II): 0.1 to 18 parts; niobium pentoxide: 0.1 to 46 parts.
3. The optical glass composition according to claim 1, wherein the optical glass composition comprises, by weight of minerals: quartz sand: 0.5 to 20 parts; titanium dioxide: 3 to 25 parts; also comprises one or more combinations of the following components:
anhydrous sodium borate: 0.1 to 36 parts; alumina powder: 0.1 to 5 parts;
lithium carbonate: 0 to 12.4 parts; sodium carbonate: 0.1 to 26 parts; potassium nitrate: 0.1 to 28 parts;
calcium carbonate: 9 to 36 parts; magnesium oxide: 0.1 to 5 parts; strontium carbonate: 0.1 to 5.7 portions; barium carbonate: 0.1 to 10.3 portions;
zircon: 0 to 15.3 parts; zinc oxide: 0.1 to 5 parts; ammonium dihydrogen phosphate: 0.1 to 40 parts;
lanthanum oxide: 0.1 to 50 parts; yttrium oxide: 0.1 to 30 parts; indium oxide (II): 0.1 to 18 parts; niobium pentoxide: 0.1 to 22 parts.
4. The optical glass composition according to claim 1, wherein the optical glass composition comprises, by weight of minerals: quartz sand: 0.5 to 20 parts; titanium dioxide: 3 to 21 parts; also comprises one or more combinations of the following components:
anhydrous sodium borate: 0.1 to 26 parts; alumina powder: 0.1 to 5 parts;
lithium carbonate: 0.1 to 25 parts; sodium carbonate: 0.1 to 14.2 portions; potassium nitrate: 0.1 to 25.8 portions;
calcium carbonate: 0 to 17.9 parts; magnesium oxide: 0.1 to 5 parts; strontium carbonate: 0.1 to 11 parts; barium carbonate: 6.4 to 26 parts;
zircon: 1.5 to 20 parts; zinc oxide: 0.1 to 5 parts; ammonium dihydrogen phosphate: 0.1 to 40 parts;
lanthanum sesquioxide: 0 to 30 parts; yttrium oxide: 0.1 to 30 parts; indium oxide: 0.1 to 18 parts; niobium pentoxide: 0.1 to 30 parts.
5. The optical glass composition according to claim 1, wherein the optical glass composition comprises, by weight of minerals: quartz sand: 0.5 to 12 parts; titanium dioxide: 3 to 15 parts; also comprises one or more combinations of the following components:
alumina powder: 0.1 to 5 parts; anhydrous sodium borate: 0.1 to 36 parts;
lithium carbonate: 0.1 to 12.5 parts; sodium carbonate: 0.1 to 26 parts; potassium nitrate: 0.1 to 26 parts;
calcium carbonate: 0.1 to 18 parts; magnesium oxide: 0.1 to 3 parts; strontium carbonate: 0.1 to 11 parts; barium carbonate: 0.1 to 20 parts;
zircon: 0.1 to 8 parts; zinc oxide: 0.1 to 3 parts; ammonium dihydrogen phosphate: 0.1 to 33 parts;
lanthanum oxide: 10 to 50 parts; yttrium oxide: 0.1 to 30 parts; indium oxide: 0.1 to 18 parts; niobium pentoxide: 0.1 to 12 portions.
6. The optical glass composition according to claim 1, wherein the optical glass composition is used as a raw batch material and has a gas rate of > 15%; heating to partially or completely complete the processes of water evaporation, carbonate decomposition and/or sulfate decomposition and/or nitrate decomposition of the raw batch material to obtain a cooked batch material, wherein the gas rate is 12-15%.
7. An optical glass produced from the optical glass composition according to any one of claims 1 to 6 as a raw batch material.
8. The optical glass of claim 7, wherein the raw batch materials are heated to a temperature of 500 ℃ to 1200 ℃ to partially or completely complete the water evaporation, carbonate decomposition and/or sulfate decomposition and/or nitrate decomposition processes of the raw batch materials to obtain a cooked batch materials, and the optical glass is prepared from the cooked batch materials.
9. The preparation method of the optical glass comprises the following steps:
step one, preparation of raw batch: weighing minerals respectively according to the composition of the optical glass composition of any one of claims 1 to 7 and mixing to obtain a raw batch;
step two, pretreating the raw batch to obtain granular, strip or block batch;
step three, heating the pretreated batch to obtain a cooked batch:
and step four, preparing the optical glass from the cooked batch.
10. The optical glass according to claim 9,
during pretreatment, one or more of sodium carboxymethylcellulose, sodium silicate aqueous solution or water is selected as a binder, so that the pretreated raw batch materials are bonded together into granules, strips or blocks;
during heating treatment, the raw batch materials are heated to 500-1200 ℃ for 30min-4 h, so that the raw batch materials partially or completely complete the processes of water evaporation, carbonate decomposition and/or sulfate decomposition and/or nitrate decomposition;
the optical glass is prepared by melting, clarifying, forming and annealing the cooked batch to obtain the optical glass or the product thereof.
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