Chromium recovery process

Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

75959, C22B 3432

Patent

active

049177265

ABSTRACT:
Waste materials containing chromium, such as the sludge resulting from neutralization of chromic acid bleed streams from metal cleaning and plating operations, are (1) rendered innocuous for land fill purposes by heating to temperatures of at least about 700.degree. C. to stabilize the materials for safe disposal and (2) activated by heating to temperatures of about 400.degree. to 500.degree. and the chromium content in the resulting calcine can be recovered by thermite reduction.

REFERENCES:
patent: 4150975 (1979-04-01), Miyake et al.
patent: 4162294 (1979-07-01), Witzke et al.
patent: 4242127 (1980-12-01), Muller et al.
patent: 4331475 (1982-05-01), Perfect
patent: 4356030 (1982-10-01), Halpin et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Chromium recovery process does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Chromium recovery process, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chromium recovery process will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1050052

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.