WO2023281182A1 - Procédé de préparation d'un mélange de matières premières comprenant de l'oxyde de calcium - Google Patents
Procédé de préparation d'un mélange de matières premières comprenant de l'oxyde de calcium Download PDFInfo
- Publication number
- WO2023281182A1 WO2023281182A1 PCT/FR2022/051239 FR2022051239W WO2023281182A1 WO 2023281182 A1 WO2023281182 A1 WO 2023281182A1 FR 2022051239 W FR2022051239 W FR 2022051239W WO 2023281182 A1 WO2023281182 A1 WO 2023281182A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mass
- sieve
- calcium oxide
- mixture
- process according
- Prior art date
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- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 title claims abstract description 121
- 239000000292 calcium oxide Substances 0.000 title claims abstract description 77
- 239000000203 mixture Substances 0.000 title claims abstract description 64
- 239000002994 raw material Substances 0.000 title claims abstract description 38
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000011521 glass Substances 0.000 claims abstract description 61
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 44
- 239000002245 particle Substances 0.000 claims abstract description 41
- 239000004576 sand Substances 0.000 claims abstract description 34
- 238000004519 manufacturing process Methods 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 21
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 33
- 230000008569 process Effects 0.000 claims description 17
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 10
- 238000002360 preparation method Methods 0.000 claims description 7
- 239000006063 cullet Substances 0.000 claims description 6
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 5
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical group [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 2
- 239000007800 oxidant agent Substances 0.000 claims description 2
- 230000001590 oxidative effect Effects 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 230000002747 voluntary effect Effects 0.000 claims description 2
- 235000012255 calcium oxide Nutrition 0.000 description 65
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 30
- 235000011941 Tilia x europaea Nutrition 0.000 description 30
- 239000004571 lime Substances 0.000 description 30
- 238000012360 testing method Methods 0.000 description 28
- 239000000428 dust Substances 0.000 description 27
- 240000006909 Tilia x europaea Species 0.000 description 26
- 238000005265 energy consumption Methods 0.000 description 22
- 235000017550 sodium carbonate Nutrition 0.000 description 16
- 235000013339 cereals Nutrition 0.000 description 12
- 239000000463 material Substances 0.000 description 9
- 238000002844 melting Methods 0.000 description 8
- 230000008018 melting Effects 0.000 description 8
- 230000009467 reduction Effects 0.000 description 8
- 235000019738 Limestone Nutrition 0.000 description 7
- 239000006028 limestone Substances 0.000 description 7
- 238000005259 measurement Methods 0.000 description 7
- 239000012080 ambient air Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000001186 cumulative effect Effects 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 240000007313 Tilia cordata Species 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000000470 constituent Substances 0.000 description 3
- 239000010459 dolomite Substances 0.000 description 3
- 229910000514 dolomite Inorganic materials 0.000 description 3
- 238000005816 glass manufacturing process Methods 0.000 description 3
- 238000006703 hydration reaction Methods 0.000 description 3
- 239000007791 liquid phase Substances 0.000 description 3
- 239000005361 soda-lime glass Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 239000005995 Aluminium silicate Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 235000012211 aluminium silicate Nutrition 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 235000011116 calcium hydroxide Nutrition 0.000 description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- UHZZMRAGKVHANO-UHFFFAOYSA-M chlormequat chloride Chemical compound [Cl-].C[N+](C)(C)CCCl UHZZMRAGKVHANO-UHFFFAOYSA-M 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 238000007872 degassing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000010006 flight Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000006060 molten glass Substances 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 210000000115 thoracic cavity Anatomy 0.000 description 2
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 2
- 229910011255 B2O3 Inorganic materials 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Inorganic materials [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 description 1
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 229910002026 crystalline silica Inorganic materials 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- VQCBHWLJZDBHOS-UHFFFAOYSA-N erbium(III) oxide Inorganic materials O=[Er]O[Er]=O VQCBHWLJZDBHOS-UHFFFAOYSA-N 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000001033 granulometry Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 235000021395 porridge Nutrition 0.000 description 1
- NOTVAPJNGZMVSD-UHFFFAOYSA-N potassium monoxide Inorganic materials [K]O[K] NOTVAPJNGZMVSD-UHFFFAOYSA-N 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 229910001948 sodium oxide Inorganic materials 0.000 description 1
- HUAUNKAZQWMVFY-UHFFFAOYSA-M sodium;oxocalcium;hydroxide Chemical compound [OH-].[Na+].[Ca]=O HUAUNKAZQWMVFY-UHFFFAOYSA-M 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- IATRAKWUXMZMIY-UHFFFAOYSA-N strontium oxide Inorganic materials [O-2].[Sr+2] IATRAKWUXMZMIY-UHFFFAOYSA-N 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N zinc oxide Inorganic materials [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B1/00—Preparing the batches
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/02—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in electric furnaces, e.g. by dielectric heating
- C03B5/027—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in electric furnaces, e.g. by dielectric heating by passing an electric current between electrodes immersed in the glass bath, i.e. by direct resistance heating
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/235—Heating the glass
- C03B5/2353—Heating the glass by combustion with pure oxygen or oxygen-enriched air, e.g. using oxy-fuel burners or oxygen lances
-
- 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
Definitions
- the invention relates to the field of the glass industry.
- the melting of the constituent materials of glass requires the input of a large amount of energy.
- the temperature of the glass bath is around 1300 to 1500°C.
- the glass is intended for direct household use, for example drinking glasses, glazing, or indirect, for example ceramic hobs, or industrial.
- the oven is subjected to very high thermal and mechanical stresses.
- the furnace is constructed with high quality refractory linings. These refractory coatings are expensive and sensitive to certain constituents of the glass susceptible to chemical reaction. Since refractory linings are poor conductors of heat, the heating of the glass bath is carried out from above.
- a liquid or gaseous fuel flame burner is placed between the glass bath and the top of the furnace called the vault.
- the glass bath is heated by radiation for the most part.
- the gas outlet temperature is 1300 to 1600°C depending on the glass family.
- the manufacture of glass releases large quantities of gases.
- the glass bath is degassed for several hours to prevent the formation of bubbles in the glass.
- fining additives such as sulfates can be used.
- the furnace works by batches of glass of chosen composition.
- US 2 084328 describes a glass furnace charge produced from dolomite and kaolin mixed in the wet process.
- the dolomite and kaolin slurry is calcined, then mixed with soda ash, sand and quicklime.
- the document US2012/0216574 relates to a process for manufacturing glass comprising the calcination of CaCCk to form CaO, the formation of a Na2SiC glass in the liquid phase, and the mixing in the liquid phase of CaO and Na 2 Si0 3 to form a soda-lime glass.
- the Applicant has developed a process for preparing a precursor mixture providing a mixture with low heating and low generation of fickleness, see WO2019002802.
- the particle size of the constituents brought to the mixture is substantially retained except that the mechanical transfer manipulations can generate a grinding effect slightly reducing the particle size.
- Said mixture introduced into a glass furnace allows a reduction of the energy necessary for the production of glass and the quantity of CO2 released by around 3 to 6%.
- the melting time of the mixture is less than the time observed when using calcium carbonate. This results in an increase in the productivity of the oven, also resulting in an additional reduction in energy consumption of the order of 4 to 6%.
- the invention proposes a process for manufacturing glass comprising the preparation of a mixture of glass raw materials for a glass furnace, in which water, sand and sodium carbonate are mixed in mass proportions comprised between 0 and 5%, 40 and 65%, and more than 0 and at most 25% respectively, and secondary glass raw materials, and, within less than 10 minutes, preferably simultaneously, oxide is added calcium and optionally calcium carbonate in a mass proportion of between 1 and 20% of the total, the calcium oxide has a particle size such that more than 97% by mass does not pass through a 0.125 mm sieve, more than 96% by mass does not pass a 0.5 mm sieve, preferably more than 95% by mass does not pass a 1 mm sieve.
- the secondary glass raw materials comprise at least one of: Al2O3, MgO, K2O, BaO, CeO2, Er2O3, TiO2, B2O3, ZnO, SrO, SnO2.
- the preparation of the mixture takes place without heat input.
- the raw materials are powdery.
- the particle size is measured using a square-mesh sieve.
- said calcium oxide has a particle size d10 of between 0.5 and 2 mm and d90 of between 3 and 4.5 mm.
- said calcium oxide is formed into grains with a thickness of between 20 and 60% of the length and width. Screening can be implemented to measure the particle size of the elongated grains.
- said calcium oxide is formed in grains with a width of less than 10 mm. [26] In one embodiment, said calcium oxide is formed in grains with a thickness of less than 3 mm.
- said calcium oxide is formed in grains of length less than 15 mm for 90% of the grains.
- said mixture of water, sand, calcium oxide and sodium carbonate at no more than 5% humidity.
- the sodium carbonate has a particle size with less than 5% passing a 0.075 mm sieve, less than 15% passing a 0.150 mm sieve and less than 5% not passing a 0.600 sieve. mm.
- said water, sand and sodium carbonate mixture has at most 3% humidity with sodium carbonate with a particle size mainly greater than 0.500 mm and less than 1.000 mm.
- said water, sand and sodium carbonate mixture has at most 2% humidity with sodium carbonate having a particle size mostly less than 0.250 mm.
- said calcium oxide comprises by mass less than 1000 ppm Fe2O3, preferably less than 900 ppm, more preferably less than 850 ppm.
- the initial temperature of the raw materials is at least 30°C.
- the hydration rate of sodium carbonate is increased.
- the calcium oxide has a particle size such that more than 98% by mass does not pass through a 0.08 mm sieve.
- the calcium oxide has a particle size such that more than 97.5% by mass does not pass through a 0.2 mm sieve. [36] In one embodiment, the calcium oxide has a particle size such that more than 97.5% by mass does not pass through a 0.5 mm sieve.
- the calcium oxide has a particle size such that more than 98% by mass does not pass through a 0.125 mm sieve.
- the calcium oxide has a particle size such that more than 97% by mass does not pass through a 1 mm sieve.
- the calcium oxide has a d50 particle size between 1 and 4 mm, preferably between 1.5 and 4 mm, more preferably between 2 and 3.25 mm.
- said sand is dry.
- the amount of water provided is well controlled.
- the energy consumed is reduced.
- Sand is considered dry at a moisture content of less than 0.1%. Sand can be dried by heating to 15-20°C above room temperature.
- water is present in said sand, preferably 3 to 6% by mass. At least 3% avoids drying of the sand.
- the calcium oxide lacks the intentional addition of aluminum oxide.
- Aluminum oxide can be added during mixing.
- cullet is added to the mixture of raw materials, before or after the addition of calcium oxide, in a mass proportion of between 5 and 40% of the total.
- the cullet may come from downgraded batches of glass. The batches are of known composition so that the quantities of other raw materials are adjusted to the desired glass quality.
- the raw material mixture is prepared in a solid state. Water evaporation is avoided in the case of a porridge. The energy consumption of a prior melting of the raw materials is avoided.
- the mixture of raw materials is prepared at a temperature between room temperature and room temperature increased by 20°C.
- the mixture of raw materials is prepared at a temperature between +0 and +35°C of the previous temperature of water, sand, soda ash and sodium oxide. calcium.
- a weighted average can be taken as the prior temperature.
- the raw material mixture is prepared without thermal energy input. Drying of the mixture, which generates fines and therefore fickle, is avoided.
- said mixture is placed in an electric oven.
- a mixture of water, sand, soda and calcium oxide and optionally calcium carbonate is supplied to a glassmaking furnace, the calcium oxide being in a mass proportion between 1 and 20% of the total of the mixture, and the mixture is melted by at least one burner with a flame directed towards the mixture. Said burner offers good performance and a glazing effect of the flights towards the surface of the bath of glass being melted or molten.
- the oxidant supplied to the burner is oxygen.
- the frosting effect of fickles is increased.
- water, sand, sodium carbonate and calcium oxide and possibly calcium carbonate are present in mass proportions of between 0 and 5%, 40 and 65%, 1 and 25%, and 1 and 20% respectively for 25% cullet added.
- the rate of cullet can vary by adjusting the proportions above.
- the decarbonation of Na2CCh is performed in the liquid phase glassware furnace.
- the mixture of raw materials means glass raw materials.
- FIG.1 is a diagram of ambient air measurements taken at the kiln feeder with test batches of quicklime.
- FIG.2 is a diagram of the ambient air measurements taken under the kiln hopper, at the level of the vibrating corridors with test batches of quicklime.
- FIG.3 is a curve of the temperature evolution of vitrifiable mixtures according to the quicklime used and the humidity rate of the sand.
- FIG.4 is a curve showing the evolution of the quantity of fickle recovered during laboratory tests according to the quicklime used and the humidity level of the sand.
- batch no. 1 has a dlO particle size of less than 0.08 mm, d50 of 0.17 mm, and d90 of 3.18 mm, while batch 2 obtained a lower dlO particle size at 0.08 mm, d50 over 2.5 mm and d90 over 3.76 mm.
- the particles exhibited a shape with all three dimensions approximately equal.
- Batch 2 seemed to be particularly affected by the presence of very coarse particles, which did not pass through the 8 mm sieve, hence too slow a melting.
- the thickness is on the order of 20 to 60% of the length and width.
- the width is less than 10 mm.
- the thickness is less than 3 mm.
- the length is generally less than 15 mm.
- [79] - Lot 3 presents interesting dust emissions, especially near the vibrating corridors: between 85 and 95% reduction for inhalable dust, and between 80 and 90% reduction for alveolar dust defined according to the aid - INRS technical report ed984 , 4th edition, October 2016, ISBN 978-2-7389-2240-3.
- Phase 1 introduction according to WO2019002802.
- Measurements 1 and 2 were taken by sampling two subdivisions of the same batch of lime which were then mixed and then baked. The rate of fines less than 0.20 mm is less than 2.5%. The rate of fines less than 0.125 mm is less than 2.0%.
- Daily tonnage reached increase compared to the same glass obtained from limestone in the absence of quicklime. The performance of daily tonnage is preserved compared to fine lime despite the increase in grain size.
- the reference batch is quicklime with a particle size dlO ⁇ 0.1 mm; d50 ⁇ 0.1mm; d90 ⁇ 0.92mm.
- the compounding temperature in the daily compounding hopper is lower with batch 4 than with the reference batch.
- the temperature is around 37/38°C. Dust emissions into the ambient air are clearly decreasing. Dust emissions in the furnace are evaluated by measuring over 24 hours using a cooled pallet placed at the top of the regenerators.
- the test corresponds to approximately 2 hours of oven operation.
- test 3 sand moisture.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Glass Melting And Manufacturing (AREA)
- Glass Compositions (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP22743530.2A EP4367071A1 (fr) | 2021-07-09 | 2022-06-23 | Procédé de préparation d'un mélange de matières premières comprenant de l'oxyde de calcium |
CN202280045339.6A CN117561222A (zh) | 2021-07-09 | 2022-06-23 | 用于制备包含氧化钙的原料的混合物的方法 |
CONC2024/0000048A CO2024000048A2 (es) | 2021-07-09 | 2024-01-04 | Procedimiento de preparación de una mezcla de materias primas que comprende óxido de calcio |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FRFR2107458 | 2021-07-09 | ||
FR2107458A FR3125033B1 (fr) | 2021-07-09 | 2021-07-09 | Préparation de fabrication de verre et four de verrerie |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2023281182A1 true WO2023281182A1 (fr) | 2023-01-12 |
Family
ID=78049329
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2022/051239 WO2023281182A1 (fr) | 2021-07-09 | 2022-06-23 | Procédé de préparation d'un mélange de matières premières comprenant de l'oxyde de calcium |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP4367071A1 (fr) |
CN (1) | CN117561222A (fr) |
AR (1) | AR126401A1 (fr) |
CO (1) | CO2024000048A2 (fr) |
FR (1) | FR3125033B1 (fr) |
WO (1) | WO2023281182A1 (fr) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2084328A (en) | 1935-03-04 | 1937-06-22 | Non Metallic Minerals Inc | Glass batch and process of making |
JPS55100236A (en) | 1979-01-18 | 1980-07-31 | Sumitomo Metal Ind Ltd | Method and apparatus for manufacturing glass starting material |
US20050022557A1 (en) | 2003-02-27 | 2005-02-03 | Carty William M. | Selective glass batching methods for improving melting efficiency and reducing gross segregation of glass batch components |
US20120216574A1 (en) | 2011-02-24 | 2012-08-30 | Dawid Dewet-Smith | Process for Melting and Refining Soda-Lime Glass |
WO2019002802A1 (fr) | 2017-06-30 | 2019-01-03 | Arc France | Fabrication de verre à partir d'un mélange comprenant de l'oxyde de calcium et four de verrerie |
-
2021
- 2021-07-09 FR FR2107458A patent/FR3125033B1/fr active Active
-
2022
- 2022-06-23 EP EP22743530.2A patent/EP4367071A1/fr active Pending
- 2022-06-23 WO PCT/FR2022/051239 patent/WO2023281182A1/fr active Application Filing
- 2022-06-23 CN CN202280045339.6A patent/CN117561222A/zh active Pending
- 2022-07-07 AR ARP220101782A patent/AR126401A1/es unknown
-
2024
- 2024-01-04 CO CONC2024/0000048A patent/CO2024000048A2/es unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2084328A (en) | 1935-03-04 | 1937-06-22 | Non Metallic Minerals Inc | Glass batch and process of making |
JPS55100236A (en) | 1979-01-18 | 1980-07-31 | Sumitomo Metal Ind Ltd | Method and apparatus for manufacturing glass starting material |
US20050022557A1 (en) | 2003-02-27 | 2005-02-03 | Carty William M. | Selective glass batching methods for improving melting efficiency and reducing gross segregation of glass batch components |
US20120216574A1 (en) | 2011-02-24 | 2012-08-30 | Dawid Dewet-Smith | Process for Melting and Refining Soda-Lime Glass |
WO2019002802A1 (fr) | 2017-06-30 | 2019-01-03 | Arc France | Fabrication de verre à partir d'un mélange comprenant de l'oxyde de calcium et four de verrerie |
Non-Patent Citations (3)
Title |
---|
"l'INRS", October 2016 |
GLASS TREND SEMINAR, 18 October 2012 (2012-10-18) |
HANDE SESIGÜRMELEK ORHONBANU ARSLAN, ALTERNATIVE RAW MATERIALS FOR IMPROVING THE MELTING PROPERTIES IN GLASS PRODUCTION |
Also Published As
Publication number | Publication date |
---|---|
CO2024000048A2 (es) | 2024-01-25 |
CN117561222A (zh) | 2024-02-13 |
EP4367071A1 (fr) | 2024-05-15 |
AR126401A1 (es) | 2023-10-11 |
FR3125033A1 (fr) | 2023-01-13 |
FR3125033B1 (fr) | 2024-06-21 |
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