GB932168A - Method for the production of tungsten and molybdenum - Google Patents

Method for the production of tungsten and molybdenum

Info

Publication number
GB932168A
GB932168A GB4042660A GB4042660A GB932168A GB 932168 A GB932168 A GB 932168A GB 4042660 A GB4042660 A GB 4042660A GB 4042660 A GB4042660 A GB 4042660A GB 932168 A GB932168 A GB 932168A
Authority
GB
Grant status
Application
Patent type
Prior art keywords
deg
zinc
oxide
hydrogen
tungsten
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
GB4042660A
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.)
MASASHI OKAGE
Original Assignee
MASASHI OKAGE
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

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B34/00Obtaining refractory metals
    • C22B34/30Obtaining chromium, molybdenum or tungsten

Abstract

A tungsten oxide and/or ammonium paratungstate or a molybdenum oxide and/or ammonium paramolybdate mixed with zinc is heated to 750 DEG -850 DEG C. in a non-oxidizing atmosphere such as hydrogen, nitrogen or coal-gas to give zinc oxide and metallic tungsten or molybdenum.ALSO:A method for producing tungsten or molybdenum comprises mixing a tungsten oxide and/or ammonium paratungstate, or a molybdenum oxide and/or ammonium para-molybdate with zinc and heating the mixture to 750-850 DEG C. in a non-oxidizing atmosphere such as hydrogen, nitrogen or coal-gas. The zinc oxide may be recovered by treating it with HCl or H2SO4 to give zinc chloride or sulphate or it may be treated with hydrogen to give zinc, which may be reused, and water vapour. The hydrogen reduction may be carried out instantaneously so that less than the stoichiometric quantity of zinc may be used. A rotary kiln may be used having zones at 400 DEG , 800 DEG and 950 DEG C., the ores being passed 400 DEG --> 800 DEG --> 950 DEG and the hydrogen in the opposite direction.
GB4042660A 1959-12-12 1960-11-24 Method for the production of tungsten and molybdenum Expired GB932168A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP3857959 1959-12-12
JP3911059 1959-12-17

Publications (1)

Publication Number Publication Date
GB932168A true true GB932168A (en) 1963-07-24

Family

ID=26377841

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4042660A Expired GB932168A (en) 1959-12-12 1960-11-24 Method for the production of tungsten and molybdenum

Country Status (1)

Country Link
GB (1) GB932168A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3480428A (en) * 1967-02-07 1969-11-25 Gerhard Jangg Process for the production of molybdenum and tungsten and their alloys using amalgams
FR2514369A1 (en) * 1981-10-08 1983-04-15 Westinghouse Electric Corp A method of reducing a metal oxide in a metal powder
EP1162281A1 (en) * 2000-06-09 2001-12-12 Harper International Corp. Continous single stage process for the production of molybdenum metal
EP1308526A1 (en) * 2001-11-06 2003-05-07 Cyprus Amax Minerals Company Process for the production of molybdenum metal
US7192467B2 (en) 2001-11-06 2007-03-20 Climax Engineered Materials, Llc Method for producing molybdenum metal and molybdenum metal
US8043406B2 (en) 2004-10-21 2011-10-25 Climax Engineered Materials, Llc Molybdenum metal powder
RU2513327C1 (en) * 2013-04-09 2014-04-20 Федеральное государственное бюджетное учреждение науки Институт металлургии и материаловедения им. А.А. Байкова Российской академии наук (ИМЕТ РАН) Method of loparite concentrate processing

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3480428A (en) * 1967-02-07 1969-11-25 Gerhard Jangg Process for the production of molybdenum and tungsten and their alloys using amalgams
FR2514369A1 (en) * 1981-10-08 1983-04-15 Westinghouse Electric Corp A method of reducing a metal oxide in a metal powder
EP1162281A1 (en) * 2000-06-09 2001-12-12 Harper International Corp. Continous single stage process for the production of molybdenum metal
EP1308526A1 (en) * 2001-11-06 2003-05-07 Cyprus Amax Minerals Company Process for the production of molybdenum metal
US6626976B2 (en) 2001-11-06 2003-09-30 Cyprus Amax Minerals Company Method for producing molybdenum metal
US7132005B2 (en) 2001-11-06 2006-11-07 Cyprus Amax Minerals Company Molybdenum metal
US7192467B2 (en) 2001-11-06 2007-03-20 Climax Engineered Materials, Llc Method for producing molybdenum metal and molybdenum metal
US7625421B2 (en) 2001-11-06 2009-12-01 Cyprus Amax Mineral Company Molybdenum metal powders
US8043406B2 (en) 2004-10-21 2011-10-25 Climax Engineered Materials, Llc Molybdenum metal powder
US8043405B2 (en) 2004-10-21 2011-10-25 Climax Engineered Materials, Llc Densified molybdenum metal powder
US8147586B2 (en) 2004-10-21 2012-04-03 Climax Engineered Materials, Llc Method for producing molybdenum metal powder
RU2513327C1 (en) * 2013-04-09 2014-04-20 Федеральное государственное бюджетное учреждение науки Институт металлургии и материаловедения им. А.А. Байкова Российской академии наук (ИМЕТ РАН) Method of loparite concentrate processing

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