CS271058B1 - Method of aluminium hydroxide calcination - Google Patents
Method of aluminium hydroxide calcination Download PDFInfo
- Publication number
- CS271058B1 CS271058B1 CS843130A CS313084A CS271058B1 CS 271058 B1 CS271058 B1 CS 271058B1 CS 843130 A CS843130 A CS 843130A CS 313084 A CS313084 A CS 313084A CS 271058 B1 CS271058 B1 CS 271058B1
- Authority
- CS
- Czechoslovakia
- Prior art keywords
- firing
- aluminium hydroxide
- unloading
- alumina
- space
- Prior art date
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- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 title claims 3
- 238000000034 method Methods 0.000 title claims 3
- 238000001354 calcination Methods 0.000 title claims 2
- 229910021502 aluminium hydroxide Inorganic materials 0.000 title 1
- 238000010304 firing Methods 0.000 claims 6
- 238000005243 fluidization Methods 0.000 claims 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims 2
- 238000001035 drying Methods 0.000 claims 1
- 239000000446 fuel Substances 0.000 claims 1
- 241001553014 Myrsine salicina Species 0.000 description 1
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- Crystals, And After-Treatments Of Crystals (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
Description
1 271 058 OIIHCAIIHE H30EPETEIIHÍI K ABTOPCKOtty ΟΒΗΛΕΤΕΛΜΓΓΒΥ 3asiujieno: 10.132.82 3asiBKa No. 3392646/22-02 MKH3 C 01 F 7/441,271,058 OIIHCAIIHE H30EPETEIIHÍI K ABTOPCKOtty ΟΒΗΛΕΤΕΛΜΓΓΒΥ 3asiujieno: 10.132.82 3asiBKa No. 3392646 / 22-02 MKH3 C 01 F 7/44
Abtopu: G. JI. UlaMyňjirjD. Γ.Λ.Κβημ, Γ. B. TejisiTHHKOB h A.B.KapnoeAbtopu: G. JI. UlaMyňjirjD. .Λ.Κβημ, Γ. B. TejisiTHHKOB h A.B.Kapnoe
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lla3Banne HBoepereHHíi s CIIOCOB KlUbllHlIAIIHH ΓΗΛΡΟΟΚΗΕΗ AJODMHllHHlla3Banne HBoepereHHi with CIIOCOB KlUbllHlIAIIHH ΓΗΛΡΟΟΚΗΕΗ AJODMHllHH
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HaBecTeii cnocoe KaJibUHHauHH rjiHHO3ena. 3aKJnoMauiUHRcn b tom, mto cyuiKy H aerHjtpaTauHioπροβοαητ b KHnsiuteM cjjoe b προτΗΒοτοκβ c TeonoiiocHTeJieM. a npoKajiKy - npn AonoJtHHTe.iibnoMHaBecTeii cnocoe KaJibUHHauHH rjiHHO3ena. 3aKJnoMauiUHRcn b th, cytoKy H aerHjtpaTauHioπροβοαητ b KHnsiuteM cjjoe b προτΗΒοτοκβ c TeonoiiocHTeJieM. and npoKajiKy - npn AonoJtHHTe.iibnoM
βΟΚΟΒΟΜ ΠΟΛΒΟΑθ TOnJIHBBβΟΚΟΒΟΜ ΠΟΛΒΟΑθ TOnJIHBB
HeaocTaTKOM cnocoea siBJíneTcsi caoikhoctb noAAepwaiiHsi TeMnepaTypu b 3OHe προκβακη b *HeoexoAHMux npeA&Jiax.HeaocTaTKOM cnocoea siBJinTcsi caoikhoctb noAAepwaiiHsi TeMnepaTypu b 3OHe προκβακη b * HeoexoAHMux npeA & Jiax.
KpoMe Toro. ocyiuecTBfleime npouecca npOKaJIKH b KHnsiuteM cjioe πρη HH3KHX ckopoctsixnceBAOowHweHKii h isokobom ηοΛΒοαβ τεπΛοιιοϋΗΤβΛίΐ ne no3BOJisieT peryJiHpotiaTb TeMnepaTypy b cjioe.KpoMe Toro. ocyiuecTBfleime npouecca npOKaJIKH b KHnsiuteM cjioe πρη HH3KHX ckopoctsixnceBAOowHweHKii h isokobom ηοΛΒοαβ τεπΛοιιοϋΗΤβΛίΐ ne no3BOJisieT peryJiHpotiaTb TeMnepaTypes b cjioe.
HonecTett Talone cnocoe KajibUHiiaUHH rjtHiiO3eMa b KHnsiuteM cjioe πρη nJioTiiocTH cjiosi 300-900ΚΓ/Μ3. ΠρΜ CKOPOCTH ΠΟβΒΛΟΟΙΚΗΙΚβΗΗΗ 0,2-0.4 M/C MaCTb ΠΡΟΚβ-ΠβΙΙΗΟΓΟ npOAyKTa B KOJIH'leCTBe 0,5-3ΚΓ/ΚΓ ΓΟΤΟΒΟΓΟ ΓΑΗΗΟ3βΜβ ΗβΠΡβΡΗΒΗΟ ItHPKyjIHpy βΤ MeWAy 3OHBMH npOKaJIKH H flerMPaTailHH H TencaMUM nonjaepniHBaeTca 3aaaHiia$, TeMnepaTypa npouecca.HonecTett Talone cnocoe KajibUHiiaUHH rjtHiiO3eMa b KHnsiuteM cjioe πρη nJioTiiocTH cjiosi 300-900ΚΓ / Μ3. ΠρΜ CKOPOCTH ΠΟβΒΛΟΟΙΚΗΙΚβΗΗΗ 0.2 to 0.4 M / C-MaCTb ΠΡΟΚβ ΠβΙΙΗΟΓΟ npOAyKTa B KOJIH'leCTBe 0,5-3ΚΓ / ΚΓ ΓΟΤΟΒΟΓΟ ΓΑΗΗΟ3βΜβ ΗβΠΡβΡΗΒΗΟ ItHPKyjIHpy βΤ MeWa 3OHBMH npOKaJIKH H H flerMPaTailHH TencaMUM nonjaepniHBaeTca 3aaaHiia $, TeMnepaTypa npouecca.
HeaocTaTKOM Aamioro cnocoea siBJísieTcn προοκοκ uacTH iienpoKaJieiuioro rjiMnoaeMa b γοτοβμΗnpoayxT h yxyAutetiHe ero xanecTBa na coAepinaiiHio pO - Ala03 η ποτβρι. πρη προκβαμββηηη . llaHeonee ejiHSKHM no TexitHMecKoň cyuinocTH h AocTHraeMoH uejin HBJíxeTCH cnocoe KaAbUHHatiHHrHApooKHCH ajuoMHHHSi, ocyutecTBJísieMuň b UHJiHHApHnecKoR πθίη, rae ocytuecTBJísieTcsi cyuiKa hAerHApaTauHSi γηαροοκηοη ajuoMHHHSi. c npnMoyroAbiioií KaMepoR a asi προκβακη b nceBAOojKHSKemiaMCAoe. c HanpaBJíetiHUM ABHwenHeM rAHUoaeMa ot aarpyoKH κ eurpy3Ke h cokobum ποαβοαομTenjiotiocHTejia, mto oeecneMHBaeT noAAeptKaiiHe pamioro npeMeiiH npeeuaatiHsi ecex mscthu r.iiHttooóMab ΚΗπηιηβΜ cjioe 3onu προκβακη / 1 /.HeaocTaTKOM Aamioro cnocoea siBJisTcn προοκοκ uacTH iienpoKaJieiuioro rjiMnoaeMa b γοτοβμΗnpoayxT h yxyAutetiHe ero xanecTBa on coAepinaiiHio pO - Ala03 η ποτβρι. πρη προκβαμββηηη. llaHeonee ejiHSKHM no TexitHMecKoň cyuinocTH h AocTHraeMoH uejin HBJíxeTCH cnocoe KaAbUHHatiHHrHApooKHCH ajuoMHHHSi, ocyutecTBJísieMuň b UHJiHHApHnecKoR πθίη RAE ocytuecTBJísieTcsi cyuiKa hAerHApaTauHSi γηαροοκηοη ajuoMHHHSi. c npnMoyroAbiioia KaMepoR and probably προκβακη b nceBAOojKHSKemiaMCAoe. c HanpaBJíetiHUM ABHwenHeM rAHUoaeMa ot aarpyoKH κ eurpy3Ke h cokobum ποαβοαομTenjiotiocHTejia, mto oeecneMHBaeT noAAeptKaiiHe pamioro npeMeiiH npeeuaatiHsi ecex mscthu r.iiHttooóMab ΚΗπηιηβΜ cjioe 3onu προκβακη / 1 /.
IleaocTaTKOM stopo cnocoea stBAsteTcsi ιιθοΦΦοκτΗΒΐιβη TenAonepeaaMa Memay cjiogm η τοπ.ιιηβηνμ«axejiOM. cBxsaiiHan c iihbkhmh ckopoctsimh ποοβαοοιμημιθιιηη cjioh, mto πρηβοαητ k noBMiuemiuMTenjionoTepsíM, bo BiieuiHun cpeay, yBeJtHMeHHio pacxoaa ToiuiHBa. npocKoxy HeoepaooTamioro »MaTepnaJia. yxyAuianuieMy KauecTBO pjiHtioaeMa.IleaocTaTKOM stopo cnocoea stBAsteTcsi ιιθοΦΦοκτΗΒΐιβη TenAonepeaaMa Memay cjiogm η τοπ.ιιηβηνμ «axejiOM. cBxsaiiHan c iihbkhmh ckopoctsimh ποοβαοοιμημιμημιμιμημιιηη cjioh, mto πρηβοαητ to noBMiuemiuMTenjionoTepsiM, Bo BiieuiHun cpeay, yBeJtHMeHHio pacxoaa ToiuiHBa. npocKoxy HeoepaooTamioro »MaTepnaJia. yxyAuianuieMy KauecTBO pjiHtioaeMa.
UeJibio H3oepeTeiiHH stBASteTcsi cttHwetiHe pacxoaa τοπαηβη. tUeJibio H3oepeTeiiHH stBASteTcsi cttHwetiHe pacxoaa τοπαηβη. t
IlocTaBJíeHHax ueAb aocTHraeTcsi τβΜ, mto b cnocoee KaAbUHitauHH γηλροοκηοη baiomhhhsi.BKJWHanuieM cyutxy, AerHApaTauH» γηαροοκηοη baiomhhhsi h npoxaJiKy a nceBAooíKHmemtoM cjioe ciianpaejieHHMM αβηιηθιιηθμ γαηηο3θμβ ot aarpysoMHoR MacTH aotiu προκβακη κ pa3rpy3OMHoR. corjiacnoHaoepeTeHH», npoxajixy aeayT npn οτηοιιιθηηη ckopocth nceBAOOWHMieiiHH B pa3rpy3OMHOH mbcth 3oiimπροκβακη κ ckopocth nceBAoouiHiKeHHsi b aarpyaoHHoR MacTH, paeiioM 10-40. IlpoKaJiKy EieayT řípuckopocth nceBAOoniHNteiiHH b paarpy3OMiioB mucth bohu npoxaAKH 5-10 m/c.IlocTaBJíeHHax ueAb aocTHraeTcsi τβΜ MTO b cnocoee KaAbUHitauHH γηλροοκηοη baiomhhhsi.BKJWHanuieM cyutxy, AerHApaTauH »γηαροοκηοη baiomhhhsi h npoxaJiKy and nceBAooíKHmemtoM cjioe ciianpaejieHHMM αβηιηθιιηθμ γαηηο3θμβ rpm aarpysoMHoR MacTH Aoti προκβακη κ pa3rpy3OMHoR. corjiacnoHaoepeTeHH », npoxajixy aeayT npn οτηοιιιθηηη ckopocth nceBAOOWHMieiiHH B pa3rpy3OMHOH mbcth 3oiimπροκβακη κ ckopocth nceBAoouiHiKeHHsi b aarpyaoHHoR MacTH, paeiioM 10-40. IlpoKaJiKy EieayT p op BA ce O O O O O O O O O O O O O O O O O O O -10 -10 -10 -10 -10 5-10 m / c.
CyuiHOCTb cnocoea 3aKA»MaeTc$i b cj,^· vnuteM. HcxoAHasi rHApooKHCb baiomhhhsi nocAeAOBaTeAbitoΠΡΟΧΟΑΗΤ 3OHM CyUlKK, ΗβΓρβΒβ Η ΑβΓΗΑΡΒΤβΚΗΗ H nOCTynaeT Β 3OHy ΠΡΟΚΒΑΚΗ B KHIISimeM CJlOe cHanpaBJíeiiiiuM ABHwettHeM pjiHiio3eMa. B 3arpy3OMnoH mbcth 3ohu προκβΑΚΗ noflaepwHBaioT ckopoctbnceeAooiKHiKeiiHH b npeaejiax 0.4-0,6 m/c. b pa3rpy3OMtioň MacTH - ckopoctb nceBAOomHweHMSinocTeneHiio yeeJiHHHBanT ao 5-10 m/c. yeejiHHeHHe ckopocth nceBAOowHHieHHH πρηβοαητ κ Buiiocy MaTepna-iia H3 pa3rpy30Miioň mbcth CAon. κ nocjieAyuuieMy ero ocawAeHH» b 3arpy3OMiioK MacTH aotiu npOKaJIKH. το ecTB oepaoyeTcn iienpepuBiiax UHpKyjinnH» MaTepnajia b 3oHe ripoKaJiKH. mto oeecneMHBaeT paBHOMepHyn TepMooepaeoTKy noTOKa MaTepHaJia b OTiiocHTeAbHO neeojibiuoň ooiie npOKaJIKH. 271 058 2CyuiHOCTb cnocoea 3aKA MaeTc $ i b cj ^ vnuteM. HcxoAHasi rHApooKHCb baiomhhhsi nocAeAOBaTeAbitoΠΡΟΧΟΑΗΤ 3OHM CyUlKK, ΗβΓρβΒβ ΗβΓΗΑΡΒΤβΚΗΗH nOCTynaeTΒ3OHy ΠΡΟΚΒΑΚΗB KHIISimeM CJOe cHanpaBJiiiiiuuM ABHwettHeM pjiHiio3eMa. B 3arpy3OMnoH mbcth 3ohu προκβΑΚΗ noflaepwHBaioT ckopoctbnceeAooiKHiKeiiHH b npeaejiax 0.4-0.6 m / c. b pa3rpy3Mthio MacTH - ckopoctb nceBAOomHweHMSinocTeneHiioYeeJiHHHBanT and 5-10 m / c. yeejiHHeHHe ckopocth nceBAOowHHieHHH πρηβοαητ κ Buiiocy MaTepna-iia H3 pa3rpy30 Mioň mbcth CAon. κ nocjieAyuuieMy ero ocawAeHH »3arpy3OMiioK MacTH aotiu npOKaJIKH. το ecTB oepaoyeTcn iienpepuBiiax UHpKyjinnH Ma »MaTepnajia b 3oHe ripoKaJiKH. mto oeecneMHBaeT paBHOMepHyn TepMooepaeoTKy noTOKa MaTepHaJia b OTiiocHTeAbHO neeojibiuoň ooiie npOKaJIKH. 271 058 2
HrjMenenwe nejiH'imiw ckopocth riceBAaomHmeHHPi πρηβοαητ k yMeHbiiienHio hjih BOBpacTaiiHiohutohchbiiocth UHpKyjiniiHH MaTepnaJia, τθμ caMUM iipeacTaB-JiseTca bo3mom<hum peryjiHpoBaTb rj,ye*Hiiy h3aBepuieiuiocTt> TépMOoepaeoTKH MaTepxa.na, tianpHMep coAepmaiiHe eC - ΛΙ2Ο3 b npciKajieiinnMΓΛΗΗΟ36Μ6.HrjMenenwe nejiH'imiw ckopocth riceBAaomHmeHHPi πρηβοαητ to yMeHbiiienHio hjih BOBpacTaiiHiohutohchbiiocth UHpKyjiniiHH MaTepnaJia, τθμ Camu iipeacTaB-JiseTca bo3mom <Hum peryjiHpoBaTb rj, ye * Hiiy h3aBepuieiuiocTt> TépMOoepaeoTKH MaTepxa.na, tianpHMep coAepmaiiHe EC - ΛΙ2Ο3 npciKajieiinnMΓΛΗΗΟ36Μ6 b.
CiiHweHHe ckopocth nceBAOomHiKaniuexo areHTa b pa3rpy3OHHoK >iacrn ime 5 m/c coKpamaeTkojihhoctbo MaTepxaJia. BUHocHMOe b naACJioeBoe npocTpaiícTeo aasi TenjiooeMena c τοπομιιμμη rasaMHΗ 3ΦΦΘΧΤ 3ΤΟΓΟ ÍIBJíeilHfl CTAHOBHTCSl 1163Ha*IHTe.JlI>HUM. Ποβηιπθβηθ ckopocth Buiue 10 m/c y βθαηίηββι?τUHpKyjismHio rjiHiio3b*Ma η ρβ3κο noBuiuaeT KojiHnecTBO MaTepnaJia, ewiiocHMoe b npeawayiuHe bohuC 10 H 10 HH 2 ckopocth nceBAOomHiKanieexo are aHa b 3 p py H ac o o o o K K ac ac ac ac rn rn rn rn rn m m m m m m m m m m m m m. BUHocHMOe b naACJioeBoe npocTpaiCeTeo aasi TenjiooeMena c τοπομιιμμη rasaMHΗ 3ΦΦΘΧΤ 3ΤΟΓΟ IIBJieilHfl CTAHOBHTCSl 1163Ha * IHTe.JlI> HUM. Buiue 10 m / c y βθαηίηββι? ΤUHpKyjismHio rjiHiio3b * Ma η ρβ3κο noBuiuaeT KojiHnecTBO MaTepnaJia, ewiiocHMoe b npeawayiuHe God
TepMOoepaeoTKH, noBUUian Ten caMUM TewnepaTypy otxoashiíhx rasoe h. cji6AOBaT6JH.Hcj, pacxoATomiHBa no oTHOiueiiHio κ onTHMajii»iioMy pemHMy. CiiHweHHe οτιιοικθηηη CKOpocTeň iiHme 10 coaaaeTriOBUtueiiiiuH ouunc MaTepnaJia H3 bohu npoxajiKH b npeauayiune 3ohu. Υβθοιηίθηηθ oTHOuieiiHH euuie 40cobaaot 3acTOHiiue bohu. BeayuiHe κ ηβκοπαβηηιο nepeKajta h yxyaiuenHio xanecTBa npoAyKUHH. B TaejiHiie 1 npeACTaBJíenu npHMepu bjihpihh» CKOpocTeň ποοβαοομκημιβηηη b 3one npoxaAKH napacxoA τθπλβ h coAopwaHHe »C - ΛΙ2Ο3 b ΓοτοΒοΜ npoayxTe.TepMOoepaeoTKH, noBUUian Ten caMUM TewnepaOtxoashiehx rasoe h. Cji6AOBaT6JH.Hcj, pacxoATomiHBa no oTHOiueiiHio κ onTHMajii »iioMy pemHMy. CiiHweHHe οτιιοικθηηη CKOpocTeň iiHme 10 coaaaeTriOBUtueiiiiuH ouunc MaTepnaJia H3 god npoxajiKH b npeauayiune 3ohu. Υβθοιηίθηηθ oTHOuieiiHH euuie 40cobaaot 3acTOHiiue God. BeayuiHe κ ηβκοπαβηηιο nepeKajta h yxyaiuenHio xanecTBa npoAyKUHH. Ta τ 1 n a enu enu enu enu enu enu p p p 3 3 3 3 3 3 3 3 3 3 3 3 - - - - - - - - - - - - - - - - τ τ τ τ τ τ τ τ τ τ τ τ τ.
TaeAHua 1 1 TeMnepaTypa >1 CKOpOCTb ΠΟΘΒΑΟ- OTiiouieHHe PacxoA Tenjia, 1 CoAepmatiHe No. 1 npoKaJiKH, 1 OWHWeHHH B 3OHB cxopocTeK κκ3λ/κγ 1 - Λ12 O3 . onuTa 1 1 ΠΡΟΚΑΑΚΗ, H/C nceBAOowHwe- 1 °C t HH51 O pa3Tpy- 1 % 1 1b 3arpy-1b pa3rpy- 3ΟΊΗΟΗ MaCTH 1 1 ΙΒΟΊΗΟΗ 1 BOHllOň K 3arpy3OHHOH ! 1 1 MacTH 1nacTH MacTH 1 1 1200 0.45 0.43 1.0 817 25-45 2 1200 0.45 4.0 8.9 817 25-45 3 1180 0.45 5.0 11.1 815 30-40 4 1160 0.45 10.0 22.2 812 30-40 3 1160 0.25 10.0 40.0 810 30-45 6 1180 0.35 12.0 34.2 814 30-50 7 1180 0.25 12.0 48.0 814 30-50 0 1160 0.35 15,0 42.8 818 45-70TaeAHua 1 1 TeMnepaTypa> 1 CKOpOCTb ΠΟΘΒΑΟ- OTiiouieHHe PacxoA Tenjia, 1 CoAepmatiHe No. 1 npoKaJiKH, 1 OWHWeHHH B 3OHB cxopocTeK κκ3λ / κγ 1 - Λ12 O3. onuTa 1 1 ΠΡΟΚΑΑΚΗ, H / C nceBAOowHwe- 1 ° C t HH51 O pa3Tpy- 1% 1 1b 3arpy-1b pa3rpy- 3ΟΊΗΟΗ MaCTH 1 1 ΙΒΟΊΗΟΗ 1 BOHllOn K 3arpy3OHHOH! 1 1 MacTH 1nacTH MacTH 1 1 1200 0.45 0.43 1.0 817 25-45 2 1200 0.45 4.0 8.9 817 25-45 3 1180 0.45 5.0 11.1 815 30-40 4 1160 0.45 10.0 22.2 812 30-40 3 1160 0.25 10.0 40.0 810 30 45 6 1180 0.35 12.0 34.2 814 30-50 7 1180 0.25 12.0 48.0 814 30-50 0 1160 0.35 15.0 42.8 818 45-70
coAepwaiiHeMcoAepwaiiHeM
HaCTOHlUHfí cnocoe Π03ΒΟΑΠβΤ CHH3HTI. paCXOA ΤΟΠΑΗΒΒ H IKUiyHHTb nPOAyKT C βΟΑΘβ CTaeHABUUM•ó - ΛΙ2Ο3.HaCTOHlUHfí cnocoe Π03ΒΟΑΠβΤ CHH3HTI. paCXOA ΤΟΠΑΗΒΒ H IKUiyHHTb nPOAyKT C βΟΑΘβ CTaeHABUUM • δ - ΛΙ2Ο3.
Claims (2)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DD84262272A DD254110A3 (en) | 1984-04-24 | 1984-04-24 | PROCESS FOR CALCINATING ALUMINUM TRIUMIDE DROXIDE |
| CS843130A CS271058B1 (en) | 1984-04-24 | 1984-04-27 | Method of aluminium hydroxide calcination |
| IN593/CAL/84A IN159920B (en) | 1984-04-27 | 1984-08-27 |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DD84262272A DD254110A3 (en) | 1984-04-24 | 1984-04-24 | PROCESS FOR CALCINATING ALUMINUM TRIUMIDE DROXIDE |
| CS843130A CS271058B1 (en) | 1984-04-24 | 1984-04-27 | Method of aluminium hydroxide calcination |
| IN593/CAL/84A IN159920B (en) | 1984-04-27 | 1984-08-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CS313084A1 CS313084A1 (en) | 1986-12-18 |
| CS271058B1 true CS271058B1 (en) | 1990-08-14 |
Family
ID=27179411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS843130A CS271058B1 (en) | 1984-04-24 | 1984-04-27 | Method of aluminium hydroxide calcination |
Country Status (2)
| Country | Link |
|---|---|
| CS (1) | CS271058B1 (en) |
| DD (1) | DD254110A3 (en) |
-
1984
- 1984-04-24 DD DD84262272A patent/DD254110A3/en not_active IP Right Cessation
- 1984-04-27 CS CS843130A patent/CS271058B1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DD254110A3 (en) | 1988-02-17 |
| CS313084A1 (en) | 1986-12-18 |
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