Method for treatment and conversion of refuse incineration resid

Specialized metallurgical processes – compositions for use therei – Processes – Producing or treating free metal

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

588201, C21B 1100

Patent

active

054054290

ABSTRACT:
In the processing of mainly inorganic refuse incineration products polluted by heavy metals and/or heavy metal compounds, and/or analogues of such products, to give environmentally acceptable products by melt-thermal treatment, an iron-containing melt is used whose iron content can be adjusted by addition of iron or an iron compound. The melt is first melted above 1300.degree. C. in a reactor. The melt is then oxidized with vigorous agitation by blowing in oxygen-containing gas until all the metals and metal compounds present in the reactor have been converted to the oxide form, the melt being kept above 1450.degree. C. and preferably at about 1500.degree. C., at least at the end of the oxidation. Subsequently, the melt is reduced, preferably by means of a part fraction of the refuse incineration product and/or iron, preferably in the form of scrap, and/or hydrogen. The reduction can then be continued by means of added aluminum and/or calcium and/or ferrosilicon. If appropriate, metal melt is fractionated in a lower part of the reactor and slag melt is separately collected as a supernatant layer. Heating energy can be saved by heat exchange and recirculation of fluid.

REFERENCES:
patent: 3779182 (1973-12-01), Camacho
J. J. J. M. Goumans et al., "Waste Materials in Construction"; Proceedings of the International Conference on Environmental Implications of Construction with Waste Materials, 1991, Elsevier, Amsterdam, NL; pp. 513-522.

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

Method for treatment and conversion of refuse incineration resid does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for treatment and conversion of refuse incineration resid, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for treatment and conversion of refuse incineration resid will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1535785

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