GB1203950A - Process for the separation of useful compounds from waste formed from the production of alumina by the bayer process - Google Patents
Process for the separation of useful compounds from waste formed from the production of alumina by the bayer processInfo
- Publication number
- GB1203950A GB1203950A GB43624/67A GB4362467A GB1203950A GB 1203950 A GB1203950 A GB 1203950A GB 43624/67 A GB43624/67 A GB 43624/67A GB 4362467 A GB4362467 A GB 4362467A GB 1203950 A GB1203950 A GB 1203950A
- Authority
- GB
- United Kingdom
- Prior art keywords
- liquor
- passed
- mixed
- residue
- vacuum evaporator
- 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
- C01F7/28—Preparation of aluminium oxide or hydroxide from aluminous ores using acids or salts with sulfurous acid
-
- 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
- C01F7/06—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom by treating aluminous minerals or waste-like raw materials with alkali hydroxide, e.g. leaching of bauxite according to the Bayer process
- C01F7/066—Treatment of the separated residue
-
- 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
- C01F7/68—Aluminium compounds containing sulfur
- C01F7/74—Sulfates
- C01F7/76—Double salts, i.e. compounds containing, besides aluminium and sulfate ions, only other cations, e.g. alums
- C01F7/762—Ammonium or alkali metal aluminium sulfates
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Analytical Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
1,203,950. Treating red mud from Bayer process. JUI-HSIUNG TSAI. 25 Sept., 1967, No. 43624/67. Heading C1A. Red mud formed in the production of alumina by the Bayer process is mixed with water, the resulting suspension is screened through a sieve and SO 2 is passed into the filtrate until the SO 2 concentration is approximately 15% by weight, the solid matter of the mixture is allowed to settle by sedimentation and the resultant clear liquor passed into a vacuum evaporator, the sediment is washed with sulphurous acid, the washings being passed into the vacuum evaporator and the sediment containing Fe 2 O 3 is removed; the liquor in the vacuum evaporator is heated until a pH of 4À5-5 is reached, the SO 2 liberated is recovered, the resulting suspension is filtered to give a residue containing Al(OH)SO 3 and a liquor, which liquor is evaporated to saturation and cooled to give Na 3 SO 3 crystals, and sulphuric acid is added to the Al(OH)SO 3 containing residue to convert it to sulphate, the precipitate of silica remaining is removed and a potassium or ammonium salt is add d to the liquor, the solution concentrated and seeded with alum to crystallize out potassium or ammonium alum. The mud is mixed with water in a ratio of 1: 2À5 by weight and the SO 2 liberated throughout the process is recovered and re-used. The SiO 2 residue may be dried at 280 C. to form silica gel or may be mixed with sodium hydroxide, heated and concentrated to form water glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB43624/67A GB1203950A (en) | 1967-09-25 | 1967-09-25 | Process for the separation of useful compounds from waste formed from the production of alumina by the bayer process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB43624/67A GB1203950A (en) | 1967-09-25 | 1967-09-25 | Process for the separation of useful compounds from waste formed from the production of alumina by the bayer process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1203950A true GB1203950A (en) | 1970-09-03 |
Family
ID=10429601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB43624/67A Expired GB1203950A (en) | 1967-09-25 | 1967-09-25 | Process for the separation of useful compounds from waste formed from the production of alumina by the bayer process |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1203950A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4495080A (en) * | 1980-01-16 | 1985-01-22 | Societe Internationale De Pulicite Et D'agences Commerciales, Enabrege: "Sipac" | Method for preparing a cation exchanger |
| FR2697178A1 (en) * | 1992-03-31 | 1994-04-29 | Autran Leon | Recovery of useful prods. from residues from alumina prodn. from bauxite - esp. ferric oxide and titanium di:oxide, by selective leaching with acid and sepn. of the insoluble material |
| EP1532077A1 (en) * | 2002-07-04 | 2005-05-25 | Nauveau Technology Investments Ltd | Processes for the treatment of a waste material having a high ph and/or alkalinity |
| CN109987639A (en) * | 2019-03-22 | 2019-07-09 | 昆明理工大学 | A kind of method of aluminum-enhanced red mud dealkalization and separation and recovery of aluminum and iron |
-
1967
- 1967-09-25 GB GB43624/67A patent/GB1203950A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4495080A (en) * | 1980-01-16 | 1985-01-22 | Societe Internationale De Pulicite Et D'agences Commerciales, Enabrege: "Sipac" | Method for preparing a cation exchanger |
| FR2697178A1 (en) * | 1992-03-31 | 1994-04-29 | Autran Leon | Recovery of useful prods. from residues from alumina prodn. from bauxite - esp. ferric oxide and titanium di:oxide, by selective leaching with acid and sepn. of the insoluble material |
| EP1532077A1 (en) * | 2002-07-04 | 2005-05-25 | Nauveau Technology Investments Ltd | Processes for the treatment of a waste material having a high ph and/or alkalinity |
| EP1532077A4 (en) * | 2002-07-04 | 2010-07-28 | Nauveau Technology Invest Ltd | Processes for the treatment of a waste material having a high ph and/or alkalinity |
| CN109987639A (en) * | 2019-03-22 | 2019-07-09 | 昆明理工大学 | A kind of method of aluminum-enhanced red mud dealkalization and separation and recovery of aluminum and iron |
| CN109987639B (en) * | 2019-03-22 | 2021-07-02 | 昆明理工大学 | A kind of method of aluminum-enhanced red mud dealkalization and separation and recovery of aluminum and iron |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |