Aqueous ferrous waste conversion process

Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

210 46, 423142, C02B 120

Patent

active

041860888

ABSTRACT:
An aqueous ferrous sulfate waste stream is converted into sludge and improved water effluent by a preferably ambient indoor temperature and pressure flow process comprising: turbulently mixing said stream with a substantial excess of gaseous oxygen and a small excess of impalpable calcium carbonate in a reaction zone until the iron content of said stream is virtually all sludged; classifying resulting sludge into a coarser solids fraction (a portion of which is recycled to the sludging operation) and an aqueous suspension of finer solids; and separating finer solids from such aqueous suspension. As such streams usually contain free sulfuric acid, it is desirable to first precipitate from the stream a primary gypsum product by neutralization prior to such sludging operation.

REFERENCES:
patent: 3375066 (1968-03-01), Murakami et al.
patent: 3617559 (1971-11-01), Cywin
patent: 3849535 (1974-11-01), Irani
Knowles C. L.; "Waste Pickle Liquors;" Steel (Industry Week); vol. 104, No. 20 (1939).
Hoak R. D.; "Waste Pickle Liquor;" Industrial & Engin. Chem.; vol. 39, p. 614, May 1947.

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

Aqueous ferrous waste conversion 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 Aqueous ferrous waste conversion process, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Aqueous ferrous waste conversion process will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-880929

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