GB982098A - Improvements in production of alumina - Google Patents
Improvements in production of aluminaInfo
- Publication number
- GB982098A GB982098A GB1649262A GB1649262A GB982098A GB 982098 A GB982098 A GB 982098A GB 1649262 A GB1649262 A GB 1649262A GB 1649262 A GB1649262 A GB 1649262A GB 982098 A GB982098 A GB 982098A
- Authority
- GB
- United Kingdom
- Prior art keywords
- iron
- aluminium
- solution
- alumina
- liquor
- 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
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
- C01F7/20—Preparation of aluminium oxide or hydroxide from aluminous ores using acids or salts
- C01F7/22—Preparation of aluminium oxide or hydroxide from aluminous ores using acids or salts with halides or halogen acids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J41/00—Anion exchange; Use of material as anion exchangers; Treatment of material for improving the anion exchange properties
- B01J41/20—Anion exchangers for chromatographic processes
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
Substantially iron-free alumina is obtained from clay containing iron and aluminium by leaching the calcined clay with hydrochloric acid, converting iron in the leach liquor to a complex anionic ferric chloride [FeCl4-], contacting the liquor with a basic anion exchange polymer, thus separating iron from aluminium, and recovering alumina from aluminium chloride remaining in the liquor. In an example, clay is calcined at 1200 DEG F. for 1 1/2 hours, ground and leached by stirring with 20% w./w. aqueous HCl at a temperature of at least 160 DEG F. for one hour. Silica is separated and the solution containing chlorides of iron and aluminium is oxidized to an E.M.F. of 600 mV. at room temperature either electrically or using a suitable oxidizing agent. The solution is then contacted with a basic anion exchange polymer, which may be solid, e.g. a granular quaternary ammonium resin, or which may be liquid, e.g. a 0.1 molar solution of a secondary amine in kerosene containing an emulsion-preventing agent, e.g. n-decyl alcohol. In the latter case, mixer-settler extraction equipment may be used to effect contact. The iron-free aluminium chloride solution is evaporated and the residue is roasted in a kiln to give alumina, containing less than 0.05% Fe2O3 and less than 0.04% SiO2. Condensate from the evaporation stage and the roaster gases may be processed to obtain hydrochloric acid for re-use. Adsorbed complex ferric chloride anions may be eluted from the polymers with water or 0.5% w./w. aqueous HCl after entrained leach liquor has been displaced with 20% w./w. aqueous HCl. The eluate may be evaporated to give a concentrated ferric chloride solution or further processed for conversion of chloride to hydrochloric acid for re-use and for production of pure ferric oxide.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12263961A | 1961-07-10 | 1961-07-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB982098A true GB982098A (en) | 1965-02-03 |
Family
ID=22403906
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1649262A Expired GB982098A (en) | 1961-07-10 | 1962-04-30 | Improvements in production of alumina |
Country Status (2)
Country | Link |
---|---|
BE (1) | BE618704A (en) |
GB (1) | GB982098A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4107266A (en) * | 1977-07-22 | 1978-08-15 | The United States Of America As Represented By The Secretary Of The Interior | Production of pure alumina from iron contaminated sulfate liquors |
EP0005679A1 (en) * | 1978-05-18 | 1979-11-28 | Aluminium Pechiney | Continuous process for obtaining pure aluminium oxide from an acid liquor originating from the chloro-sulfuric leaching of an aluminous mineral, and the purification of the liquor separated from the aluminium oxide |
EP0006070A1 (en) * | 1978-05-18 | 1979-12-12 | Aluminium Pechiney | Process for obtaining pure aluminium oxide by hydrochloric acid leaching of aluminous minerals and extraction of impurities by a sulfuric-acid treatment |
DE3133710A1 (en) * | 1980-08-26 | 1982-04-22 | Mecseki ércbányászati Vállalat, 7614 Pécs | METHOD FOR THE PRODUCTION OF MATERIALS WITH A REDUCED IRON CONTENT FROM RAW MATERIALS CONTAINING IRON, SILICON AND ALUMINUM AND FOR THE PRODUCTION OF IRON (III) -OXYDENE AND, IF NECESSARY, ALUMINUM OXIDE CONCENTRATES |
DE3123425A1 (en) * | 1981-06-12 | 1982-12-30 | Tatabányai Szénbányák, 2800 Tatabánya | Process for the simultaneous production of aluminium oxide and iron(III) oxide side by side |
CN114368770A (en) * | 2022-02-23 | 2022-04-19 | 神华准能资源综合开发有限公司 | Method for recovering alumina from coal gangue |
CN114622249A (en) * | 2022-04-12 | 2022-06-14 | 昆明冶金研究院有限公司 | Method for reducing iron content in electrolytic aluminum liquid |
-
1962
- 1962-04-30 GB GB1649262A patent/GB982098A/en not_active Expired
- 1962-06-08 BE BE618704A patent/BE618704A/en unknown
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4107266A (en) * | 1977-07-22 | 1978-08-15 | The United States Of America As Represented By The Secretary Of The Interior | Production of pure alumina from iron contaminated sulfate liquors |
EP0005679A1 (en) * | 1978-05-18 | 1979-11-28 | Aluminium Pechiney | Continuous process for obtaining pure aluminium oxide from an acid liquor originating from the chloro-sulfuric leaching of an aluminous mineral, and the purification of the liquor separated from the aluminium oxide |
EP0006070A1 (en) * | 1978-05-18 | 1979-12-12 | Aluminium Pechiney | Process for obtaining pure aluminium oxide by hydrochloric acid leaching of aluminous minerals and extraction of impurities by a sulfuric-acid treatment |
DE3133710A1 (en) * | 1980-08-26 | 1982-04-22 | Mecseki ércbányászati Vállalat, 7614 Pécs | METHOD FOR THE PRODUCTION OF MATERIALS WITH A REDUCED IRON CONTENT FROM RAW MATERIALS CONTAINING IRON, SILICON AND ALUMINUM AND FOR THE PRODUCTION OF IRON (III) -OXYDENE AND, IF NECESSARY, ALUMINUM OXIDE CONCENTRATES |
US4530819A (en) * | 1980-08-26 | 1985-07-23 | Tatabanvai Szenbanyak | Process for reducing the iron |
DE3123425A1 (en) * | 1981-06-12 | 1982-12-30 | Tatabányai Szénbányák, 2800 Tatabánya | Process for the simultaneous production of aluminium oxide and iron(III) oxide side by side |
CN114368770A (en) * | 2022-02-23 | 2022-04-19 | 神华准能资源综合开发有限公司 | Method for recovering alumina from coal gangue |
CN114622249A (en) * | 2022-04-12 | 2022-06-14 | 昆明冶金研究院有限公司 | Method for reducing iron content in electrolytic aluminum liquid |
Also Published As
Publication number | Publication date |
---|---|
BE618704A (en) | 1962-10-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR910004827A (en) | Recovery of Scandium, Yttrium and Lanthanides from Titanium Ore | |
US3104950A (en) | Process for the separation of iron and titanium values by extraction and the subsequent preparation of anhydrous titanium dopxode | |
US2413709A (en) | Method of recovering alumina and hydrochloric acid | |
GB982098A (en) | Improvements in production of alumina | |
ES423320A1 (en) | Production of metal fluorides from fluosilicic acid | |
CA1073434A (en) | Purification of iron containing acidic solutions | |
GB1367998A (en) | Method of removing monovalent inorganic acids from an aqueous solution containing metal satls of the acids | |
GB1107231A (en) | Process for producing iron-free aluminium nitrate solutions | |
ES403089A1 (en) | Method for producing high-purity nickel from nickel matte | |
EP0298763A2 (en) | Method for recovering titanium | |
GB979884A (en) | Process for separation and recovery of volatile fluoride impurities from uranium hexafluoride containing the same | |
US3144304A (en) | Process for purifying alumina and recovering a gallium concentrate | |
GB1103660A (en) | Tin recovery | |
US3586476A (en) | Method of stripping ions from an ion-exchange liquid | |
US4292279A (en) | Production of high purity uranium compounds from crude yellow cake | |
US4302428A (en) | Yellowcake processing in uranium recovery | |
US3879520A (en) | Method for dissolving ceramic beryllia | |
GB1343626A (en) | Treatment of chloride solutions | |
US3411883A (en) | Recovery of cesium and nitrous oxide from fission product solutions containing ammonium nitrate | |
GB971594A (en) | Process for the production of zirconium compounds,more especially basic zirconium sulphate | |
US2532102A (en) | Production of ammonium beryllium fluoride | |
NO158028B (en) | GALLIUM EXTRACTION. | |
GB896893A (en) | Improvements relating to the production of iron oxide from iron ores | |
US3023078A (en) | Production of uranium tetrafluoride | |
US2635037A (en) | Preparation of zirconium tetrafluoride |