GB1444058A - Recovery of arsenic - Google Patents
Recovery of arsenicInfo
- Publication number
- GB1444058A GB1444058A GB2292174A GB2292174A GB1444058A GB 1444058 A GB1444058 A GB 1444058A GB 2292174 A GB2292174 A GB 2292174A GB 2292174 A GB2292174 A GB 2292174A GB 1444058 A GB1444058 A GB 1444058A
- Authority
- GB
- United Kingdom
- Prior art keywords
- arsenic
- sulphur dioxide
- pentavalent
- state
- solution
- 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
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G28/00—Compounds of arsenic
- C01G28/005—Oxides; Hydroxides; Oxyacids
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/80—Compositional purity
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Removal Of Specific Substances (AREA)
Abstract
1444058 Recovery of arsenious oxide from solution CAPPER PASS Ltd 20 March 1975 [22 May 1974] 22921/74 Heading C1A Arsenic III oxide is recovered from sulphuric acid solutions containing other dissolved metals by reduction of arsenic in the pentavalent state to the trivalent state using sulphur dioxide under superatmospheric pressure at from 100‹ to 150‹ C., preferably 125‹ C.; the molar ratio of sulphur dioxide to pentavalent arsenic lies between 1À05 and 1À30 and preferably approximately equal weights of sulphur dioxide and arsenic in the pentavalent state are employed. The other metallic elements in solution may be precipitated, as the hydrated sulphates before or after the reduction stage and both methods are exemplified.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2292174A GB1444058A (en) | 1974-05-22 | 1974-05-22 | Recovery of arsenic |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2292174A GB1444058A (en) | 1974-05-22 | 1974-05-22 | Recovery of arsenic |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1444058A true GB1444058A (en) | 1976-07-28 |
Family
ID=10187217
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2292174A Expired GB1444058A (en) | 1974-05-22 | 1974-05-22 | Recovery of arsenic |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1444058A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2502608A1 (en) * | 1981-03-30 | 1982-10-01 | Sumitomo Metal Mining Co | PROCESS FOR PRODUCING ARSENIEOUS ANHYDRIDE FROM A SUBSTANCE CONTAINING ARSENIC SULFIDE |
EP0620189A1 (en) * | 1993-04-08 | 1994-10-19 | AlliedSignal Inc. | Process for separating arsenic acid from an aqueous mixture comprising sulfuric and arsenic acids |
-
1974
- 1974-05-22 GB GB2292174A patent/GB1444058A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2502608A1 (en) * | 1981-03-30 | 1982-10-01 | Sumitomo Metal Mining Co | PROCESS FOR PRODUCING ARSENIEOUS ANHYDRIDE FROM A SUBSTANCE CONTAINING ARSENIC SULFIDE |
EP0620189A1 (en) * | 1993-04-08 | 1994-10-19 | AlliedSignal Inc. | Process for separating arsenic acid from an aqueous mixture comprising sulfuric and arsenic acids |
WO1994024051A1 (en) * | 1993-04-08 | 1994-10-27 | Alliedsignal Inc. | Process for separating arsenic acid from an aqueous mixture comprising sulfuric and arsenic acids |
US5449503A (en) * | 1993-04-08 | 1995-09-12 | Alliedsignal Inc. | Process for separating arsenic acid from an aqueous mixture comprising sulfuric and arsenic acids |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |