PL117915B3 - Process for manufacturing aluminium oxide from slagso shlaka - Google Patents
Process for manufacturing aluminium oxide from slagso shlaka Download PDFInfo
- Publication number
- PL117915B3 PL117915B3 PL19889477A PL19889477A PL117915B3 PL 117915 B3 PL117915 B3 PL 117915B3 PL 19889477 A PL19889477 A PL 19889477A PL 19889477 A PL19889477 A PL 19889477A PL 117915 B3 PL117915 B3 PL 117915B3
- Authority
- PL
- Poland
- Prior art keywords
- slagso
- shlaka
- aluminium oxide
- leached
- manufacturing aluminium
- Prior art date
Links
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title claims description 13
- 238000000034 method Methods 0.000 title claims description 9
- 230000008569 process Effects 0.000 title description 2
- 238000004519 manufacturing process Methods 0.000 title 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 7
- 238000002604 ultrasonography Methods 0.000 claims description 4
- 239000002699 waste material Substances 0.000 claims description 2
- 239000002002 slurry Substances 0.000 claims 1
- 239000000243 solution Substances 0.000 description 6
- 238000002386 leaching Methods 0.000 description 5
- 239000002893 slag Substances 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 1
- 239000011028 pyrite Substances 0.000 description 1
- 229910052683 pyrite Inorganic materials 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Landscapes
- Processing Of Solid Wastes (AREA)
Description
Przedmiotem wynalazku jest sposób otrzymywa¬ nia tlenku glinu z zuzli hutniczych, stanowiacy ulepszenie sposobu wedlug patentu nr 113496.Znany sposób otrzymywania tlenku glinu z zu¬ zli hutniczych wedlug patentu nr 113496 polega na tym, ze stopiony zuzel hutniczy poddaje sie wolnemu chlodzeniu w zakresie temperatur * po¬ nizej 700 °C do temperatury otoczenia, przy rów¬ noczesnym zastosowaniu ultradzwieków lub rezo¬ nansowej wibracji o wysokiej czestotliwosci. Na¬ stepnie z powstalej wysoko-temperaturowej od¬ miany 12CaO : 7AhOa luguje sie tlenek glinu wod¬ nym roztworem sody. W znanym sposobie otrzy¬ mywania tlenku glinu luguje sie wodnym roztwo¬ rem sodu w temperaturze 60 °C — 70 °C.Celem wynalazku jest zwiekszenie odzysku tlen¬ ku glinu z zuzli hutniczych.Istota wynalazku polega na tym, ze z powstalej w wyniku obróbki zuzla wysokotemperaturowej odmiany polimorficznej 12CaO: 7AI2O3 luguje sie tlenek glinu wodnym roztworem sody w tempera¬ turze od 55—20 °C.Zastosowanie nizszych temperatur podczas lugo¬ wania powoduje zmniejszenie strat tlenku glino¬ wego do ponizej 5l°/o, wynikajacych ze zmniejsze¬ nia zanieczyszczenia roztworu krzemianami, pod¬ czas gdy poprzednio straty wynosily okolo 9%.W wyniku zastosowania nizszych temperatur lu- 10 15 25 30 gowania zwieksza sie wydajnosc lugowania AhOa o 5%, to jest do 80—85% wagowych.Ponadto wyeliminowuje sie stosowane podgrze¬ wanie plynów przed I i II stopniem ekstrakcji.Ilosc ciepla potrzebna na podgrzewanie tych plynów stanowi w stosunku do ogólnego zuzycia ciepla okolo 25l°/o. W zwiazku z tym, przez zasto¬ sowanie tego sposobu obniza sie zuzycie ciepla o okolo 25%.Przyklad: Stopiony zuzel hutniczy o skladzie chemicznym: Si02 — 13,50%, Fe20s — 1,60%, AI2O3 — 29,50%, CaO — 52,30%, MgO — 1,10%, Ti02 — 1,60%, SO3 — 0,04%.Chlodzi sie wolno od temperatury 700 °C do tem¬ peratury otoczenia, przy czym w temperaturze 600 °C poddaje sie dzialaniu ultradzwieków o cze¬ stotliwosci 20 kHz, w wyniku czego zuzel w 1001% wagowych samorzutnie rozpada sie na drobny pyl o srednim wymiarze ziaren 30 nm, zawierajacy krystaliczna, wysokotemperaturowa, polimorficzna odmiane 12CaO : 7AI2O3.Tlenek-glinowy, zawarty w glinianie wapniowym 12CaO : AhOs luguje sie wodnym roztworem sody w temperaturze 30 °C, pfzy czym tlenek zostaje wylugowany w 85% wagowych. W czasie lugowa¬ nia tlenek glinowy przechodzi do roztworu, z któ¬ rego na drodze dalszej obróbki uzyskuje sie tlenek glinowy. 117 9153 117 915 4 Pozostalosc po lugowaniu uzupelnia sie piaskiem kwarcowym, wypalkami pirytowymi i wypala sie w piecu obrotowym na klinkier portlandzki, a na¬ stepnie miele sie z dodatkiem gipsu na cement.Zastrzezenie patentowe Sposób otrzymywania tlenku glinu z zuzli hut¬ niczych polegajacy na tym, ze stopiony zuzel hut¬ niczy poddaje sie wolnemu chlodzeniu od tempe¬ ratury 700 °C do temperatury otoczenia, poddajac go równoczesnie dzialaniu ultradzwieków lub re¬ zonansowym wibracjom o wysokiej czestotliwosci, a nastepnie luguje sie wodnym roztworem sody wedlug patentu nr 113496, znamienny tym, ze lu¬ guje sie wodnym roztworem sody w zakresie tem¬ peratur 55 °C do 20 °C. 5 DN-8 z. 1730/82 Cena 100 zl PLThe subject of the invention is a method of obtaining alumina from metallurgical slags, which is an improvement of the method according to the patent No. 113496. The known method of obtaining alumina from metallurgical slags, according to the patent No. 113496, consists in the fact that the molten metallurgical slag is slowly cooled in the temperature range. * below 700 ° C to ambient temperature, with simultaneous use of ultrasound or high frequency resonant vibration. The aluminum oxide is then leached from the resulting high-temperature 12CaO: 7AhOa form with an aqueous soda solution. In the known method of obtaining alumina, it is leached with an aqueous sodium solution at a temperature of 60 ° C - 70 ° C. The aim of the invention is to increase the recovery of alumina from metallurgical waste. The essence of the invention consists in the fact that The low temperature polymorph 12CaO: 7AI2O3 is leached with an aqueous solution of soda at a temperature of 55-20 ° C. The use of lower temperatures during ligation reduces the loss of alumina to less than 5%, resulting from the reduction of reduces the silicate contamination of the solution, whereas previously losses were around 9%. The use of lower leaching temperatures increases the AhOa leaching efficiency by 5%, that is, to 80-85% by weight. heating the liquids before the 1st and 2nd stage of extraction. The amount of heat needed for heating these liquids in relation to the total heat consumption is about 25%. Therefore, by using this method, the heat consumption is reduced by about 25%. Example: Molten metallurgical composition: SiO2 - 13.50%, Fe2Os - 1.60%, Al2O3 - 29.50%, CaO - 52.30%, MgO - 1.10%, TiO2 - 1.60%, SO3 - 0.04%. It is cooled slowly from 700 ° C to the ambient temperature, and is subjected to ultrasound with a frequency of 20 kHz, as a result of which 1001% of its weight spontaneously decomposes into fine dust with an average grain size of 30 nm, containing a crystalline, high-temperature, polymorphic modification of 12CaO: 7AI2O3. 12CaO: AhOs is leached with an aqueous soda solution at 30 ° C, whereupon the oxide is leached in 85% by weight. During the leaching process, the alumina goes into solution, from which alumina is obtained by further treatment. 117 9153 117 915 4 The residue after leaching is supplemented with quartz sand, pyrite burns and burned in a rotary kiln to form Portland clinker, and then grinded with the addition of gypsum for cement. Patent disclaimer The method of obtaining alumina from metallurgical slags. in that the molten metallurgical slag is subjected to slow cooling from 700 ° C to ambient temperature, subjecting it simultaneously to the action of ultrasounds or resonant vibrations of high frequency, and then leaching with an aqueous solution of soda according to patent No. 113496, characterized by it is loosened with an aqueous soda solution in the temperature range of 55 ° C to 20 ° C. 5 DN-8 z. 1730/82 Price PLN 100 PL
Claims (1)
Priority Applications (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL19889477A PL117915B3 (en) | 1977-06-14 | 1977-06-14 | Process for manufacturing aluminium oxide from slagso shlaka |
| HU78GO1392A HU179977B (en) | 1977-02-23 | 1978-02-16 | Process for preparing aluminium oxide |
| FR7804580A FR2381827A1 (en) | 1977-02-23 | 1978-02-17 | ALUMINUM OXIDE PRODUCTION PROCESS |
| GB6613/78A GB1596603A (en) | 1977-02-23 | 1978-02-20 | Method for obtaining aluminium oxide |
| ES467129A ES467129A1 (en) | 1977-02-23 | 1978-02-20 | Method for obtaining aluminum oxide |
| US05/880,004 US4149898A (en) | 1977-02-23 | 1978-02-21 | Method for obtaining aluminum oxide |
| DE2807615A DE2807615C3 (en) | 1977-02-23 | 1978-02-22 | Process for the production of alumina |
| AR27118778A AR218477A1 (en) | 1977-02-23 | 1978-02-22 | METHOD TO PRODUCE ALUMINUM OXIDE FROM METALURGIC SLAG RICH IN ALUMINA |
| BR7801063A BR7801063A (en) | 1977-02-23 | 1978-02-22 | PROCESS TO OBTAIN ALUMINUM OXIDE |
| CA297,477A CA1100284A (en) | 1977-02-23 | 1978-02-22 | Method for obtaining aluminium oxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL19889477A PL117915B3 (en) | 1977-06-14 | 1977-06-14 | Process for manufacturing aluminium oxide from slagso shlaka |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| PL198894A1 PL198894A1 (en) | 1979-01-15 |
| PL117915B3 true PL117915B3 (en) | 1981-09-30 |
Family
ID=19983094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PL19889477A PL117915B3 (en) | 1977-02-23 | 1977-06-14 | Process for manufacturing aluminium oxide from slagso shlaka |
Country Status (1)
| Country | Link |
|---|---|
| PL (1) | PL117915B3 (en) |
-
1977
- 1977-06-14 PL PL19889477A patent/PL117915B3/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| PL198894A1 (en) | 1979-01-15 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Decisions on the lapse of the protection rights |
Effective date: 20090222 |