Partitioning of refractory metals from oxidation resistant...

Details Partitioning of refractory metals from oxidation resistant... Partitioning of refractory metals from oxidation resistant...

C - Chemistry, Metallurgy

22

B

53/118

C22B 34/00 (2006.01) C22B 7/00 (2006.01) C22B 34/20 (2006.01) C22B 34/30 (2006.01)

Patent

CA 1157662

PARTITIONING OF REFRACTORY METALS FROM OXIDATION RESISTANT SCRAP ALLOY ABSTRACT OF THE DISCLOSURE Alloy scrap containing refractory metals such as chro- mium, molybdenum, tungsten, vanadium, niobium and tantalum and base metals such as nickel, cobalt, copper and iron are treated to partition the refractory metal values from the base metal values without an energy intensive remelting step. The scrap in finely divided form is calcined in the presence of an oxygen con- taining gas and a member of a certain group of alkali metal salts at a temperature in the range of 800°C to 1150°C for 1/4 hour to four hours. This treatment converts the refractory metals to alkali metal molybdates, tungstates, chromates, vanadates, nioba- tes and tantalates and the base metals to oxides. The calcined product may then be water leached to produce a substantially base metal-free liquor rich in refractory metal values. Both the refractory and the base metal values may be subsequently reco- vered by conventional hydrometallurgical techniques. -1-

374152

Affiliated with

Also associated with

Rating

Partitioning of refractory metals from oxidation resistant... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Partitioning of refractory metals from oxidation resistant..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Partitioning of refractory metals from oxidation resistant... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-241021