DE65604C - PROCESS FOR PREPARATION OF THONDEHYDRATE AND ALKALINE ALUMINATE - Google Patents
PROCESS FOR PREPARATION OF THONDEHYDRATE AND ALKALINE ALUMINATEInfo
- Publication number
- DE65604C DE65604C DE189265604D DE65604DA DE65604C DE 65604 C DE65604 C DE 65604C DE 189265604 D DE189265604 D DE 189265604D DE 65604D A DE65604D A DE 65604DA DE 65604 C DE65604 C DE 65604C
- Authority
- DE
- Germany
- Prior art keywords
- preparation
- thondehydrate
- aluminate
- bauxite
- alkaline aluminate
- 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
- 150000004645 aluminates Chemical class 0.000 title claims description 5
- 238000000034 method Methods 0.000 title claims description 3
- 229910001570 bauxite Inorganic materials 0.000 claims description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 5
- 238000013019 agitation Methods 0.000 claims 1
- 229910052783 alkali metal Inorganic materials 0.000 claims 1
- -1 alkali metal aluminate Chemical class 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 229910052742 iron Inorganic materials 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000004927 clay Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 235000020777 polyunsaturated fatty acids Nutrition 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 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
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
-
- 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
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/04—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
- C01F7/14—Aluminium oxide or hydroxide from alkali metal aluminates
- C01F7/141—Aluminium oxide or hydroxide from alkali metal aluminates from aqueous aluminate solutions by neutralisation with an acidic agent
- C01F7/142—Aluminium oxide or hydroxide from alkali metal aluminates from aqueous aluminate solutions by neutralisation with an acidic agent with carbon dioxide
-
- 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
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/04—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
- C01F7/14—Aluminium oxide or hydroxide from alkali metal aluminates
- C01F7/144—Aluminium oxide or hydroxide from alkali metal aluminates from aqueous aluminate solutions by precipitation due to cooling, e.g. as part of the Bayer process
-
- 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
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/04—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
- C01F7/14—Aluminium oxide or hydroxide from alkali metal aluminates
- C01F7/144—Aluminium oxide or hydroxide from alkali metal aluminates from aqueous aluminate solutions by precipitation due to cooling, e.g. as part of the Bayer process
- C01F7/147—Apparatus for precipitation
-
- 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
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
Nach dem D. R. P. Nr. 43977 vom 17. Juli 1887 werden zersetzte Aluminatlaugen erhalten, in denen das Verhältnifs der Molecule von AL2 O3 : JVa2 O sich etwa wie 1 : 6 verhält. Diese wirken nach meinen Beobachtungen in vielen Fällen wie kaustisches Natron. In dem durch oben erwähntes Patent geschützten Verfahren wurden diese Lösungen nach dem Eindampfen wieder mit Bauxit gemischt und der Hitze des Flammofens ausgesetzt, um daraus wieder Rohaluminat zu erhalten, das nach der Auflösung und Filtration wieder zur Zersetzung gelangt.According to DRP No. 43977 of July 17, 1887, decomposed aluminate liquors are obtained in which the ratio of the molecules of AL 2 O 3 : JVa 2 O is approximately 1: 6. According to my observations, these act like caustic soda in many cases. In the process protected by the above-mentioned patent, these solutions were mixed again with bauxite after evaporation and exposed to the heat of the furnace in order to obtain crude aluminate again, which decomposes again after dissolution and filtration.
Nach meinen Untersuchungen nun sind diese Lösungen im Stande, wenn sie bis auf 40 bis 440 B. eingedampft werden, aus dem Bauxit direct die Thonerde aufzulösen, wenn man denselben mit den eingedampften Lösungen unter fortwährendem Rühren bei einem Druck von 3 bis 4 Atmosphären und der entsprechenden Temperatur (160 bis 1720C.) durch 1Y2 bis 2 Stunden behandelt.According to my investigations now these solutions are able when they are evaporated down to 40 to 44 0 B., from the bauxite, the alumina direct to dissolve when the same with the evaporated solution with continued stirring at a pressure of 3 to 4 atmospheres and the corresponding temperature (160 to 172 0 C.) treated by 1Y 2 to 2 hours.
War der Bauxit fein genug gepulvert und ist nicht viel Kieselsäure vorhanden, so wird die Thonerde bis auf Spuren aufgelöst bezw. bis auf eine Menge, welche mit der etwa gelösten Kieselsäure und der entsprechenden Menge Natron als die bekannte Doppelverbindung Na.2 O AL2 O3 3 Si O2 + 9 aq zurückbleibt. If the bauxite was powdered finely enough and there is not much silica present, the alumina is dissolved or removed to the extent of traces. except for an amount which, with the approximately dissolved silica and the corresponding amount of sodium bicarbonate as the well-known double compound Na. 2 O AL 2 O 3 3 Si O 2 + 9 aq remains.
In dem gewöhnlichen zur Verarbeitung gelangenden rothen französischen Bauxit mit 61 pCt. AL2 O3 und etwa 3 pCt. Si O2 werden regelmäfsig 59 pCt. der Thonerde in Lösung übergeführt, wenn zersetzte Lauge und Bauxit in dem Verhältnifs zusammengebracht werden, dafs nach der Behandlung eine Lösung resultiren mufs, welche ein Molecularverhältnifs von ^Ii2 O3 : Na,, O = 1 : 1,75 bis 1,85 zeigt; es entspricht dies einer Ausbeute von mindestens 96 pCt. der vorhandenen Thonerde.In the usual red French bauxite with 61 pCt. AL 2 O 3 and about 3 pCt. Si O 2 are regularly 59 pCt. the alumina in solution transferred when decomposed liquor and bauxite are brought together in the Verhältnifs, that after the treatment a solution result irish PUFA which a Molecularverhältnifs of ^ Ii 2 O 3: Na ,, O = 1: 1.75 to 1.85 shows; this corresponds to a yield of at least 96 pCt. the existing clay.
Der zu diesem Zwecke nothwendige Apparat ist ein aus halbzölligem Eisenblech gefertigter Druckkessel mit den nöthigen Armaturen, als Sicherheitsventil, Rührvorrichtung, Manometer, Druckrohr und Einfüllöffnung. Wie leicht ersichtlich, kann derselbe für eine bedeutende Production von verhältnifsmäfsig geringen Dimensionen sein, welcher Umstand jede Gefahr beim Arbeiten ausschliefst. Ebenso ist der Verbrauch von Brennmaterial und Arbeitskraft zur Bedienung ein ganz unbedeutender und kaum nennenswerth. Beispielsweise können in einem Druckkessel von 2]/2 m Länge und 1 m Durchmesser täglich etwa 4000 bis 5000 kg Bauxit aufgeschlossen werden, und ist der Verbrauch an Brennmaterial und Arbeitskraft hierfür kaum Y15 von dem für einen oder mehrere entsprechende Flammöfen erforderlichen, abgesehen davon, dafs man bereits fertige Lösung erhält, während man bei der Arbeit mit Flammöfen die Lösung erst aus dem trockenen Rohaluminat herstellen mufs.The apparatus necessary for this purpose is a pressure vessel made of half-inch sheet iron with the necessary fittings as a safety valve, stirring device, manometer, pressure pipe and filling opening. As can easily be seen, it can be of comparatively small dimensions for a considerable production, which circumstance precludes any danger in the work. Likewise, the consumption of fuel and manpower for service is quite insignificant and hardly worth mentioning. For example, about 4,000 to 5,000 kg of bauxite can be digested daily in a pressure vessel 2 ] / 2 m long and 1 m in diameter, and the consumption of fuel and manpower for this is hardly Y 15 from that required for one or more corresponding flame furnaces, apart from that , that a ready-made solution is obtained, while when working with flame furnaces the solution must first be prepared from the dry raw aluminate.
Der nach der Aufschliefsung zurückbleibende rothe eisenhaltige Rückstand setzt sich gut ab und läfst sich bei einiger Praxis gut filtriren undThe red iron-containing residue remaining after the digestion settles out well and with some practice it can be filtered and filtered well
auswaschen. Er kann seines hohen Eisen- und geringen Thonerdegehalts wegen noch in geeigneter Weise verarbeitet oder mit anderen Eisenerzen zusammen auf Eisen verschmolzen werden.wash out. Due to its high iron and low alumina content, it can still be used in suitably processed or fused together with other iron ores on iron will.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE65604T | 1892-01-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE65604C true DE65604C (en) | 1892-11-03 |
Family
ID=5632965
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE188743977D Expired DE43977C (en) | 1892-01-31 | 1887-07-17 | PROCESS FOR PREPARATION OF THONDEHYDRATE AND ALKALINE ALUMINATE |
| DE189265604D Expired DE65604C (en) | 1892-01-31 | 1892-01-31 | PROCESS FOR PREPARATION OF THONDEHYDRATE AND ALKALINE ALUMINATE |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE188743977D Expired DE43977C (en) | 1892-01-31 | 1887-07-17 | PROCESS FOR PREPARATION OF THONDEHYDRATE AND ALKALINE ALUMINATE |
Country Status (1)
| Country | Link |
|---|---|
| DE (2) | DE43977C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6767355B2 (en) | 2000-11-03 | 2004-07-27 | Willy Rusch Gmbh | Tracheostomy dilator |
| FR3095433A1 (en) | 2019-04-29 | 2020-10-30 | Ib2 | PROCESS FOR TREATING PHYSICAL ENRICHMENT RESIDUES OF BAUXITE |
| EP4261299A1 (en) | 2022-04-12 | 2023-10-18 | Dubai Aluminium PJSC | Method for processing bauxite residues from the bayer process, and mineral product obtained by said method |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE902489C (en) * | 1934-03-29 | 1954-01-25 | Dorr Ges M B H | Process for the clarification of fluids |
| FR976555A (en) * | 1942-04-20 | 1951-03-20 | Francais Ciments | Process for the precipitation of alumina in dilute sodium aluminate solutions |
| DE906570C (en) * | 1943-05-13 | 1954-03-15 | Metallgesellschaft Ag | Process for the production of alumina from alumina-containing material by digestion using suction sintering |
| DE962523C (en) * | 1944-08-01 | 1957-04-25 | Zschimmer & Schwarz Vormals Ch | Process for accelerating and influencing the crystallization of alumina compounds |
| FR2328660A1 (en) * | 1975-10-21 | 1977-05-20 | Pechiney Aluminium | IMPROVEMENT IN THE PURIFICATION OF CIRCULATING SOLUTIONS IN THE BAYER CYCLE |
| DE4008379A1 (en) * | 1990-03-15 | 1991-09-19 | Gartner & Co J | METHOD AND SYSTEM FOR REGENERATING ALUMINUM ALUMINUM SOLUTIONS WITH ALKALINE |
| US5512129A (en) * | 1990-03-15 | 1996-04-30 | Josef Gartner & Co. | Method for regenerating alkaline solutions for pickling aluminum |
| ES2953483T3 (en) | 2018-11-26 | 2023-11-13 | Alunorte Alumina Do Norte Do Brasil S A | Process and system to produce alumina from bauxite ore |
-
1887
- 1887-07-17 DE DE188743977D patent/DE43977C/en not_active Expired
-
1892
- 1892-01-31 DE DE189265604D patent/DE65604C/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6767355B2 (en) | 2000-11-03 | 2004-07-27 | Willy Rusch Gmbh | Tracheostomy dilator |
| FR3095433A1 (en) | 2019-04-29 | 2020-10-30 | Ib2 | PROCESS FOR TREATING PHYSICAL ENRICHMENT RESIDUES OF BAUXITE |
| WO2020221968A1 (en) | 2019-04-29 | 2020-11-05 | Ib2 | Process for treating bauxite physical enrichment residues |
| EP4261299A1 (en) | 2022-04-12 | 2023-10-18 | Dubai Aluminium PJSC | Method for processing bauxite residues from the bayer process, and mineral product obtained by said method |
Also Published As
| Publication number | Publication date |
|---|---|
| DE43977C (en) | 1888-08-03 |
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