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JPS55149134A - Manufacture of high purity ammonium molybdate from aqueous alkali solution containing vanadium and molybdenum - Google Patents

Manufacture of high purity ammonium molybdate from aqueous alkali solution containing vanadium and molybdenum

Info

Publication number
JPS55149134A
JPS55149134A JP5644679A JP5644679A JPS55149134A JP S55149134 A JPS55149134 A JP S55149134A JP 5644679 A JP5644679 A JP 5644679A JP 5644679 A JP5644679 A JP 5644679A JP S55149134 A JPS55149134 A JP S55149134A
Authority
JP
Japan
Prior art keywords
high purity
ammonium molybdate
crystals
soln
ammonium
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
JP5644679A
Other languages
Japanese (ja)
Other versions
JPS5760298B2 (en
Inventor
Takeshi Arai
Mamoru Shimizu
Hidekazu Bessho
Nobuo Fukuda
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.)
NOF Corp
Original Assignee
Nippon Oil and Fats 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 Nippon Oil and Fats Co Ltd filed Critical Nippon Oil and Fats Co Ltd
Priority to JP5644679A priority Critical patent/JPS55149134A/en
Publication of JPS55149134A publication Critical patent/JPS55149134A/en
Publication of JPS5760298B2 publication Critical patent/JPS5760298B2/ja
Granted legal-status Critical Current

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  • Inorganic Compounds Of Heavy Metals (AREA)

Abstract

PURPOSE: To manufacture high purity ammonium molybdate from a soln. contg. V and Mo extracted with alakli by concentrating the soln. to crystallize V salt and Mo salt and subjecting an aqueous soln. obtd. by dissolving the crystals to double decomposition and hydrolysis.
CONSTITUTION: A soln. contg. V, Mo, etc. extracted from catalyst with alkali is concentrated to deposit crystals contg. sodium vanadate and sodium molybdate. The crystals are separated, dissolved in water, and adjusted to pH about 7.5W9.5 with sulfuric acid. After removing aluminum hydroxide deposited, ammonium sulfate is added to deposit the V component as ammonium vanadate by double decomposition. This ammonium vanadate is separated by filtration, and sulfuric acid is added to the filtrate, thereby hydrolyzing ammonium molybdate contained to deposit molybdic acid crystals, which are then filtered, dissolved in NH3 water, and recrystallized to obtain high purity ammonium molybdate.
COPYRIGHT: (C)1980,JPO&Japio
JP5644679A 1979-05-09 1979-05-09 Manufacture of high purity ammonium molybdate from aqueous alkali solution containing vanadium and molybdenum Granted JPS55149134A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5644679A JPS55149134A (en) 1979-05-09 1979-05-09 Manufacture of high purity ammonium molybdate from aqueous alkali solution containing vanadium and molybdenum

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5644679A JPS55149134A (en) 1979-05-09 1979-05-09 Manufacture of high purity ammonium molybdate from aqueous alkali solution containing vanadium and molybdenum

Publications (2)

Publication Number Publication Date
JPS55149134A true JPS55149134A (en) 1980-11-20
JPS5760298B2 JPS5760298B2 (en) 1982-12-18

Family

ID=13027309

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5644679A Granted JPS55149134A (en) 1979-05-09 1979-05-09 Manufacture of high purity ammonium molybdate from aqueous alkali solution containing vanadium and molybdenum

Country Status (1)

Country Link
JP (1) JPS55149134A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0262963A2 (en) * 1986-10-03 1988-04-06 Chevron Research And Technology Company Process for recovering vanadium-free molybdenum from solution
JPH01172225A (en) * 1987-12-25 1989-07-07 Nippon Mining Co Ltd Production of ammonium molybdate crystal having high purity

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0262963A2 (en) * 1986-10-03 1988-04-06 Chevron Research And Technology Company Process for recovering vanadium-free molybdenum from solution
JPH01172225A (en) * 1987-12-25 1989-07-07 Nippon Mining Co Ltd Production of ammonium molybdate crystal having high purity

Also Published As

Publication number Publication date
JPS5760298B2 (en) 1982-12-18

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