JPS565328A - Selective molybdenum extraction from waste catalyst for desulfurization - Google Patents

Selective molybdenum extraction from waste catalyst for desulfurization

Info

Publication number
JPS565328A
JPS565328A JP7879879A JP7879879A JPS565328A JP S565328 A JPS565328 A JP S565328A JP 7879879 A JP7879879 A JP 7879879A JP 7879879 A JP7879879 A JP 7879879A JP S565328 A JPS565328 A JP S565328A
Authority
JP
Japan
Prior art keywords
component
ammonia
desulfurization
waste catalyst
salt
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
JP7879879A
Other languages
Japanese (ja)
Other versions
JPS5814367B2 (en
Inventor
Akira Morikawa
Hiroshi Yasuhara
Yasuo Suzuki
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.)
Dowa Holdings Co Ltd
Original Assignee
Dowa 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 Dowa Mining Co Ltd filed Critical Dowa Mining Co Ltd
Priority to JP54078798A priority Critical patent/JPS5814367B2/en
Publication of JPS565328A publication Critical patent/JPS565328A/en
Publication of JPS5814367B2 publication Critical patent/JPS5814367B2/en
Expired legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Abstract

PURPOSE: To enhance Mo extraction efficiency by a method wherein a waste catalyst for desulfurization is oxidized and calcined, and is treated with leaching process using aqueous ammonia and aqueous solution of the ammonium salt at a specific temperature under O2 partial pressure, so that Mo component is selectively extracted.
CONSTITUTION: Desulfurization waste catalyst is oxidized and roasted to remove deposited oil and sulfur component. The roasted product is treated with pressurized leaching using aqueous solution of ammonia and ammonia salt or two or more of ammonia salt (preferably ammonium sulfate dissolved into aqueous ammonia or ammonium carbonate solution), at a temperature higher than 110°C under oxygen partial pressure of more than 1kg/cm2 for 30min or more. This selectively extracts Mo component in high yield of about 97% or more but does not dissolve any of Al component constituting catalyst carrier. In contrast with conventional method, this process extracts little V component, simplifies Mo purification process, and provides extracted liquid easy to filter allowing Mo acid to be easily separated by precipitation by common method.
COPYRIGHT: (C)1981,JPO&Japio
JP54078798A 1979-06-22 1979-06-22 Selective extraction method of molybdenum from desulfurization waste catalyst Expired JPS5814367B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54078798A JPS5814367B2 (en) 1979-06-22 1979-06-22 Selective extraction method of molybdenum from desulfurization waste catalyst

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54078798A JPS5814367B2 (en) 1979-06-22 1979-06-22 Selective extraction method of molybdenum from desulfurization waste catalyst

Publications (2)

Publication Number Publication Date
JPS565328A true JPS565328A (en) 1981-01-20
JPS5814367B2 JPS5814367B2 (en) 1983-03-18

Family

ID=13671874

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54078798A Expired JPS5814367B2 (en) 1979-06-22 1979-06-22 Selective extraction method of molybdenum from desulfurization waste catalyst

Country Status (1)

Country Link
JP (1) JPS5814367B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007032228A1 (en) * 2005-09-16 2007-03-22 Mitsubishi Rayon Co., Ltd. Methods for recovery of molybdenum and process for preparation of catalysts

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS498491A (en) * 1972-05-17 1974-01-25

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS498491A (en) * 1972-05-17 1974-01-25

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007032228A1 (en) * 2005-09-16 2007-03-22 Mitsubishi Rayon Co., Ltd. Methods for recovery of molybdenum and process for preparation of catalysts

Also Published As

Publication number Publication date
JPS5814367B2 (en) 1983-03-18

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