GB1444058A - Recovery of arsenic - Google Patents

Recovery of arsenic

Info

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
Application number
GB2292174A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CAPPER PASS Ltd
Original Assignee
CAPPER PASS Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by CAPPER PASS Ltd filed Critical CAPPER PASS Ltd
Priority to GB2292174A priority Critical patent/GB1444058A/en
Publication of GB1444058A publication Critical patent/GB1444058A/en
Expired legal-status Critical Current

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.
GB2292174A 1974-05-22 1974-05-22 Recovery of arsenic Expired GB1444058A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (4)

* Cited by examiner, † Cited by third party
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