JPS57160914A - Manufacture of arsenious acid - Google Patents

Manufacture of arsenious acid

Info

Publication number
JPS57160914A
JPS57160914A JP4544381A JP4544381A JPS57160914A JP S57160914 A JPS57160914 A JP S57160914A JP 4544381 A JP4544381 A JP 4544381A JP 4544381 A JP4544381 A JP 4544381A JP S57160914 A JPS57160914 A JP S57160914A
Authority
JP
Japan
Prior art keywords
arsenic
acid
arsenious acid
copper ions
soln
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.)
Granted
Application number
JP4544381A
Other languages
Japanese (ja)
Other versions
JPS6042172B2 (en
Inventor
Tadashi Nakano
Hiroyuki Tamura
Naoki Kubo
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.)
Sumitomo Metal Mining Co Ltd
Original Assignee
Sumitomo Metal Mining Co 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 Sumitomo Metal Mining Co Ltd filed Critical Sumitomo Metal Mining Co Ltd
Priority to JP4544381A priority Critical patent/JPS6042172B2/en
Priority to GB8209042A priority patent/GB2098187B/en
Priority to US06/362,154 priority patent/US4438079A/en
Priority to SE8201987A priority patent/SE460537B/en
Priority to FR8205421A priority patent/FR2502608B1/en
Publication of JPS57160914A publication Critical patent/JPS57160914A/en
Publication of JPS6042172B2 publication Critical patent/JPS6042172B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Inorganic Compounds Of Heavy Metals (AREA)

Abstract

PURPOSE: To obtain arsenious acid anhydride of high purity at a low cost by carrying out aeration in the presence of copper ions when arsenic is shifted from a substance contg. arsenic sulfide to an aqueous soln. contg. copper sulfate by extraction and by reducing the resulting arsenic acid.
CONSTITUTION: A substance contg. arsenic sulfide is added to an aqueous soln. of copper sulfate, arsenic is extracted while stirring the soln., and simultaneously aeration is carried out in the presence of ≥1g/l copper ions. By the aeration most of arsenious acid is oxidized to arsenic acid. After filtering out the extraction residue, a weak reducing agent is added to the filtrate to reduce the arsenic acid in the soln. to arsenious acid, and arsenious acid anhydride is precipitated and recovered. It is considered that the copper ions act as a catalyst, yet excess copper ions stick to the arsenious acid anhydride as an impurity.
COPYRIGHT: (C)1982,JPO&Japio
JP4544381A 1981-03-30 1981-03-30 Arsenous acid manufacturing method Expired JPS6042172B2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP4544381A JPS6042172B2 (en) 1981-03-30 1981-03-30 Arsenous acid manufacturing method
GB8209042A GB2098187B (en) 1981-03-30 1982-03-26 Extracting arsenic
US06/362,154 US4438079A (en) 1981-03-30 1982-03-26 Method for manufacture of arsenious anhydride
SE8201987A SE460537B (en) 1981-03-30 1982-03-29 PROCEDURE FOR PREPARATION OF DIARSENIC TRYOXIDE
FR8205421A FR2502608B1 (en) 1981-03-30 1982-03-30 PROCESS FOR THE PRODUCTION OF ARSENIOUS ANHYDRIDE FROM A SUBSTANCE CONTAINING ARSENIC SULFIDE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4544381A JPS6042172B2 (en) 1981-03-30 1981-03-30 Arsenous acid manufacturing method

Publications (2)

Publication Number Publication Date
JPS57160914A true JPS57160914A (en) 1982-10-04
JPS6042172B2 JPS6042172B2 (en) 1985-09-20

Family

ID=12719467

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4544381A Expired JPS6042172B2 (en) 1981-03-30 1981-03-30 Arsenous acid manufacturing method

Country Status (1)

Country Link
JP (1) JPS6042172B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6136121A (en) * 1984-07-30 1986-02-20 Sumitomo Metal Mining Co Ltd Production of arsenous acid having high purity
JP2007203239A (en) * 2006-02-03 2007-08-16 Dowa Holdings Co Ltd Method for treatment of arsenic-containing wastewater
JP2008143741A (en) * 2006-12-11 2008-06-26 Dowa Metals & Mining Co Ltd Manufacturing method of ferric-arsenic compound
JP2010059035A (en) * 2008-09-08 2010-03-18 Sumitomo Metal Mining Co Ltd Method for producing aqueous arsenous acid solution of high purity from copper removal slime
JP2015081214A (en) * 2013-10-23 2015-04-27 住友金属鉱山株式会社 Method for leaching arsenic

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6136121A (en) * 1984-07-30 1986-02-20 Sumitomo Metal Mining Co Ltd Production of arsenous acid having high purity
JPH0242774B2 (en) * 1984-07-30 1990-09-26
JP2007203239A (en) * 2006-02-03 2007-08-16 Dowa Holdings Co Ltd Method for treatment of arsenic-containing wastewater
JP4614093B2 (en) * 2006-02-03 2011-01-19 Ｄｏｗａメタルマイン株式会社 Arsenic wastewater treatment method
JP2008143741A (en) * 2006-12-11 2008-06-26 Dowa Metals & Mining Co Ltd Manufacturing method of ferric-arsenic compound
JP2010059035A (en) * 2008-09-08 2010-03-18 Sumitomo Metal Mining Co Ltd Method for producing aqueous arsenous acid solution of high purity from copper removal slime
JP2015081214A (en) * 2013-10-23 2015-04-27 住友金属鉱山株式会社 Method for leaching arsenic

Also Published As

Publication number Publication date
JPS6042172B2 (en) 1985-09-20

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