Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1975-08-27
1978-09-26
White, Robert F.
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
75 3, 75 5, 264117, 264122, C21B 500
Patent
active
041166817
ABSTRACT:
Ore pellets of homogeneous composition and loose consistency, free of pellet germs and having a reduced content of adhesive, are formed by dry mixing ore powder of particle size less than 90 microns (preferably about 65% less than 40 microns), with a moisture content of less than 0.1%, and powdered adhesive, e.g. bentonite, 0.05 to 1 percent by volume preferably added over a period of at least 11/2 minutes; then adding to the dry mix 8 to 9% of water at 50.degree. to 90.degree. C., and then homogenizing by a plowing action by which the mass is torn and whipped apart without being allowed to perform a strong rolling action, preferably for only 50 to 90 seconds at a temperature of 60.degree. to 70.degree., rubbing under pressure also being avoided, after which the mixture is formed into pellets with addition of 0.4 to 0.5% of water during the forming process. The formed pellets may be roasted, baked or sintered.
REFERENCES:
patent: 2743172 (1956-04-01), DeVaney
patent: 3555133 (1971-01-01), Gentaz
Chem. Engr's. Handbook, by Perry et al., McGraw-Hill Book Co., New York, 1973, pp. 21-31 to 21-34.
Burger Jacobus J.
Hasenack Nicolas A.
Radstake Herman
Van Latenstein Anthonie
Hall James R.
Koninklijke Nederlandsche Hoogovens en Staalfabrieken N.V.
White Robert F.
LandOfFree
Process for the manufacture of ore pellets does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for the manufacture of ore pellets, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the manufacture of ore pellets will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2086704