CA1089191A - Preferential chlorination of alumina in kaolinitic ores - Google Patents
Preferential chlorination of alumina in kaolinitic oresInfo
- Publication number
- CA1089191A CA1089191A CA265,201A CA265201A CA1089191A CA 1089191 A CA1089191 A CA 1089191A CA 265201 A CA265201 A CA 265201A CA 1089191 A CA1089191 A CA 1089191A
- Authority
- CA
- Canada
- Prior art keywords
- chlorination
- alkali metal
- oxyanion
- carbo
- ore
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000005660 chlorination reaction Methods 0.000 title claims abstract description 77
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title claims abstract description 37
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 65
- 238000000034 method Methods 0.000 claims abstract description 47
- 230000008569 process Effects 0.000 claims abstract description 46
- 239000004927 clay Substances 0.000 claims abstract description 42
- 150000001875 compounds Chemical class 0.000 claims abstract description 39
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims abstract description 38
- 229910052783 alkali metal Inorganic materials 0.000 claims abstract description 31
- 150000001340 alkali metals Chemical class 0.000 claims abstract description 31
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 31
- -1 oxides Chemical class 0.000 claims abstract description 7
- 229910019142 PO4 Inorganic materials 0.000 claims abstract description 4
- 150000004649 carbonic acid derivatives Chemical class 0.000 claims abstract description 3
- 150000004679 hydroxides Chemical class 0.000 claims abstract 4
- 235000021317 phosphate Nutrition 0.000 claims abstract 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims abstract 2
- 150000003013 phosphoric acid derivatives Chemical class 0.000 claims abstract 2
- 238000006243 chemical reaction Methods 0.000 claims description 41
- 238000001354 calcination Methods 0.000 claims description 25
- 229910052799 carbon Inorganic materials 0.000 claims description 24
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 23
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 17
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 15
- 239000000460 chlorine Substances 0.000 claims description 15
- 229910052801 chlorine Inorganic materials 0.000 claims description 15
- 239000003638 chemical reducing agent Substances 0.000 claims description 11
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims description 5
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims description 4
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 4
- 235000011152 sodium sulphate Nutrition 0.000 claims description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 3
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 claims description 3
- 239000012320 chlorinating reagent Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 3
- 235000013311 vegetables Nutrition 0.000 claims description 3
- 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 claims description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 2
- 229910001570 bauxite Inorganic materials 0.000 claims description 2
- 150000001642 boronic acid derivatives Chemical class 0.000 claims description 2
- 230000006872 improvement Effects 0.000 claims description 2
- 229910052744 lithium Inorganic materials 0.000 claims description 2
- 150000002823 nitrates Chemical class 0.000 claims description 2
- 150000002826 nitrites Chemical class 0.000 claims description 2
- 150000003891 oxalate salts Chemical class 0.000 claims description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 2
- 239000010452 phosphate Substances 0.000 claims description 2
- 229910052700 potassium Inorganic materials 0.000 claims description 2
- 239000011591 potassium Substances 0.000 claims description 2
- 229910052708 sodium Inorganic materials 0.000 claims description 2
- 150000003467 sulfuric acid derivatives Chemical class 0.000 claims description 2
- DHCDFWKWKRSZHF-UHFFFAOYSA-L thiosulfate(2-) Chemical compound [O-]S([S-])(=O)=O DHCDFWKWKRSZHF-UHFFFAOYSA-L 0.000 claims description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical class OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 claims 2
- 229910001854 alkali hydroxide Inorganic materials 0.000 claims 2
- 229910000272 alkali metal oxide Inorganic materials 0.000 claims 2
- 238000005979 thermal decomposition reaction Methods 0.000 claims 2
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 claims 1
- 229910002651 NO3 Inorganic materials 0.000 claims 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims 1
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 claims 1
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims 1
- 239000002803 fossil fuel Substances 0.000 claims 1
- 150000004764 thiosulfuric acid derivatives Chemical class 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000003647 oxidation Effects 0.000 abstract description 2
- 238000007254 oxidation reaction Methods 0.000 abstract description 2
- 150000001339 alkali metal compounds Chemical class 0.000 abstract 1
- 239000000654 additive Substances 0.000 description 11
- 239000000376 reactant Substances 0.000 description 10
- 230000000996 additive effect Effects 0.000 description 9
- 229910052681 coesite Inorganic materials 0.000 description 9
- 229910052906 cristobalite Inorganic materials 0.000 description 9
- 229910052682 stishovite Inorganic materials 0.000 description 9
- 229910052905 tridymite Inorganic materials 0.000 description 9
- 239000012530 fluid Substances 0.000 description 8
- 235000012239 silicon dioxide Nutrition 0.000 description 8
- FDNAPBUWERUEDA-UHFFFAOYSA-N silicon tetrachloride Chemical compound Cl[Si](Cl)(Cl)Cl FDNAPBUWERUEDA-UHFFFAOYSA-N 0.000 description 8
- 239000005995 Aluminium silicate Substances 0.000 description 6
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 235000012211 aluminium silicate Nutrition 0.000 description 6
- 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 6
- 235000017550 sodium carbonate Nutrition 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 238000010926 purge Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 235000010210 aluminium Nutrition 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- VXEGSRKPIUDPQT-UHFFFAOYSA-N 4-[4-(4-methoxyphenyl)piperazin-1-yl]aniline Chemical compound C1=CC(OC)=CC=C1N1CCN(C=2C=CC(N)=CC=2)CC1 VXEGSRKPIUDPQT-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000000571 coke Substances 0.000 description 3
- 238000011065 in-situ storage Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000002006 petroleum coke Substances 0.000 description 3
- 239000005049 silicon tetrachloride Substances 0.000 description 3
- 235000012712 vegetable carbon Nutrition 0.000 description 3
- 239000004108 vegetable carbon Substances 0.000 description 3
- 238000004131 Bayer process Methods 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 150000001450 anions Chemical class 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000003077 lignite Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 2
- 235000019698 starch Nutrition 0.000 description 2
- 239000008107 starch Substances 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 241000370685 Arge Species 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 241000861718 Chloris <Aves> Species 0.000 description 1
- 241000518994 Conta Species 0.000 description 1
- 239000007832 Na2SO4 Substances 0.000 description 1
- MXRIRQGCELJRSN-UHFFFAOYSA-N O.O.O.[Al] Chemical compound O.O.O.[Al] MXRIRQGCELJRSN-UHFFFAOYSA-N 0.000 description 1
- 229910020489 SiO3 Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910000288 alkali metal carbonate Inorganic materials 0.000 description 1
- 150000008041 alkali metal carbonates Chemical class 0.000 description 1
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 1
- 229940037003 alum Drugs 0.000 description 1
- 229940024548 aluminum oxide Drugs 0.000 description 1
- 238000010420 art technique Methods 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 238000010960 commercial process Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- UREBDLICKHMUKA-CXSFZGCWSA-N dexamethasone Chemical compound C1CC2=CC(=O)C=C[C@]2(C)[C@]2(F)[C@@H]1[C@@H]1C[C@@H](C)[C@@](C(=O)CO)(O)[C@@]1(C)C[C@@H]2O UREBDLICKHMUKA-CXSFZGCWSA-N 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000036647 reaction Effects 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 235000010288 sodium nitrite Nutrition 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 229910000162 sodium phosphate Inorganic materials 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/48—Halides, with or without other cations besides aluminium
- C01F7/56—Chlorides
- C01F7/58—Preparation of anhydrous aluminium chloride
- C01F7/60—Preparation of anhydrous aluminium chloride from oxygen-containing aluminium compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Silicon Compounds (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Catalysts (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US63131575A | 1975-11-12 | 1975-11-12 | |
| US631,315 | 1975-11-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1089191A true CA1089191A (en) | 1980-11-11 |
Family
ID=24530678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA265,201A Expired CA1089191A (en) | 1975-11-12 | 1976-11-09 | Preferential chlorination of alumina in kaolinitic ores |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US4139602A (OSRAM) |
| JP (1) | JPS5910933B2 (OSRAM) |
| AU (1) | AU503235B2 (OSRAM) |
| BR (1) | BR7607442A (OSRAM) |
| CA (1) | CA1089191A (OSRAM) |
| DE (1) | DE2651072C2 (OSRAM) |
| FR (1) | FR2329590A1 (OSRAM) |
| GB (1) | GB1564027A (OSRAM) |
| GR (1) | GR62006B (OSRAM) |
| IN (1) | IN149837B (OSRAM) |
| IT (1) | IT1121737B (OSRAM) |
| MX (1) | MX4319E (OSRAM) |
| ZA (1) | ZA766697B (OSRAM) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2422723B1 (fr) * | 1978-04-11 | 1985-06-21 | Toth Aluminum Corp | Procede de carbo-chloration de minerais kaolinitiques |
| US4284607A (en) * | 1979-09-10 | 1981-08-18 | Aluminum Company Of America | Chlorination of aluminous materials using preselected solid reducing agents |
| US4514373A (en) * | 1983-12-06 | 1985-04-30 | Toth Aluminum Corporation | Purification of aluminum chloride |
| US4565674A (en) * | 1984-02-10 | 1986-01-21 | Washington Research Foundation | Alumina chlorination |
| US4699770A (en) * | 1984-11-28 | 1987-10-13 | David Weston | Production of a purified alumina-silica product and substantially pure aluminum chloride from bauxites, bauxitic clays, kaolinitic clays and mixtures thereof |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US702943A (en) * | 1901-10-21 | 1902-06-24 | Robert Mcknight | Art of treating ores containing silica or silicates. |
| US1268015A (en) * | 1917-06-15 | 1918-05-28 | Gulf Refining Co | Process of making aluminum chlorid. |
| US1392044A (en) * | 1917-11-26 | 1921-09-27 | Harold S Booth | Process of recovering an element capable of forming a haloid from ores, minerals, &c., containing the same |
| US1509605A (en) * | 1923-10-05 | 1924-09-23 | Ralph H Mckee | Process of making aluminum chloride |
| US2084289A (en) * | 1936-09-17 | 1937-06-15 | Gulf Oil Corp | Process of making aluminum chloride |
| US2239880A (en) * | 1937-01-14 | 1941-04-29 | Philadelphia Quartz Co | Manufacture of silicates |
| US2823098A (en) * | 1954-05-28 | 1958-02-11 | Pennsalt Chemicals Corp | Production of silicates |
| US3816093A (en) * | 1970-05-28 | 1974-06-11 | Ethyl Corp | Halogenating method of reducing iron and titanium content of alumina-silica ore |
| HU167973B (en) * | 1973-09-28 | 1976-01-28 | Veszpremi Vegyipari Egyetem | Process for producing anhydrous aluminium trichloride from aluminium containing raw materials |
| GB1565200A (en) * | 1976-01-06 | 1980-04-16 | Post Office | Switching circuit |
-
1976
- 1976-11-05 GB GB46065/76A patent/GB1564027A/en not_active Expired
- 1976-11-08 BR BR7607442A patent/BR7607442A/pt unknown
- 1976-11-08 MX MX765058U patent/MX4319E/es unknown
- 1976-11-09 ZA ZA766697A patent/ZA766697B/xx unknown
- 1976-11-09 IT IT29171/76A patent/IT1121737B/it active
- 1976-11-09 CA CA265,201A patent/CA1089191A/en not_active Expired
- 1976-11-09 GR GR52134A patent/GR62006B/el unknown
- 1976-11-09 DE DE2651072A patent/DE2651072C2/de not_active Expired
- 1976-11-10 FR FR7633854A patent/FR2329590A1/fr active Granted
- 1976-11-10 AU AU19481/76A patent/AU503235B2/en not_active Expired
- 1976-11-12 JP JP51136204A patent/JPS5910933B2/ja not_active Expired
-
1977
- 1977-07-11 US US05/814,834 patent/US4139602A/en not_active Expired - Lifetime
- 1977-07-21 IN IN149/CAL/77A patent/IN149837B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR2329590B3 (OSRAM) | 1979-07-27 |
| JPS5261199A (en) | 1977-05-20 |
| AU1948176A (en) | 1978-05-18 |
| DE2651072A1 (de) | 1977-05-18 |
| BR7607442A (pt) | 1977-09-20 |
| US4139602A (en) | 1979-02-13 |
| MX4319E (es) | 1982-03-22 |
| JPS5910933B2 (ja) | 1984-03-12 |
| FR2329590A1 (fr) | 1977-05-27 |
| DE2651072C2 (de) | 1985-12-19 |
| ZA766697B (en) | 1977-10-26 |
| IT1121737B (it) | 1986-04-23 |
| GR62006B (en) | 1979-02-15 |
| IN149837B (OSRAM) | 1982-05-01 |
| GB1564027A (en) | 1980-04-02 |
| AU503235B2 (en) | 1979-08-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |