Production of metallic nickel with low iron content

Details Production of metallic nickel with low iron content Production of metallic nickel with low iron content

2011-05-03

2011-05-03

Wyszomierski, George (Department: 1733)

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

C075S629000, C075S739000, C075S743000, C205S589000, C205S594000

Reexamination Certificate

active

07935171

ABSTRACT:
A process for producing a metallic nickel product with a low iron content, that includes: (i) providing an acidic product liquor; (ii) subjecting the acidic product liquor to an ion exchange process to absorb the nickel and part of the iron; (iii) eluting the nickel and iron to produce an eluate containing the nickel and iron. (iv) neutralising the eluate to leave an iron depleted eluate; (v) neutralising the iron depleted eluate to cause precipitation of nickel hydroxide containing low iron; (vi) calcining the nickel hydroxide to convert it to nickel oxide; (vii) subjecting the nickel oxide to direct smelting in the presence of a reductant to produce a molten nickel phase; and (viii) refining the molten nickel phase by oxidation to produce a metallic nickel product with low iron content.

REFERENCES:
patent: 5571308 (1996-11-01), Duyvesteyn et al.
patent: 6261527 (2001-07-01), Arroyo et al.
patent: 7585350 (2009-09-01), Duarte et al.
patent: 2001/0001650 (2001-05-01), Duyvesteyn et al.
patent: 2002/0041840 (2002-04-01), Arroyo et al.
patent: 2006/0263282 (2006-11-01), Francis et al.
patent: WO 2002/008477 (2002-01-01), None
patent: WO 2006/029443 (2006-03-01), None
patent: WO 2006/053376 (2006-05-01), None
patent: WO 2006/069416 (2006-07-01), None
patent: WO 2006/089358 (2006-08-01), None

Affiliated with

Also associated with

Rating

Production of metallic nickel with low iron content does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Production of metallic nickel with low iron content, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Production of metallic nickel with low iron content will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2634058