Method of suppressing dust and fumes during electric steel produ

Details Method of suppressing dust and fumes during electric steel produ Method of suppressing dust and fumes during electric steel produ

1992-11-25

1994-08-30

Reynolds, Bruce A.

Industrial electric heating furnaces

Environmental control

373 9, 164475, 75559, 62 12, F27D 1700

Patent

active

053434919

ABSTRACT:
During melting in an electric melting furnace of iron products such as pig iron, scrap iron, directly reduced iron pellets, and various alloy metals, or mixtures of the foregoing having greatly varying impurities, solid carbon dioxide is led over the melting hearth shortly before, during, and after charging. Explosive burning of the combustible constituents is thus prevented in that the oxygen is displaced during the charging operation by the expanding gaseous carbon dioxide produced. The method makes possible electric steel production with reduced accumulation of dust and fumes in that formation thereof is largely eliminated directly at the source. By cutting down on the high volumes of gas and gas temperatures occurring during charging without carbon dioxide, substantially smaller filter installations are needed, whereby the amount of savings on investment and operating costs economically compensates for the cost of the carbon dioxide utilization.

REFERENCES:
patent: 3598573 (1971-08-01), Freissmuth et al.
patent: 3640702 (1972-02-01), Karinthi et al.
patent: 3676963 (1972-07-01), Rice et al.
patent: 3775099 (1973-11-01), Coffield et al.
patent: 3783167 (1974-01-01), Tylko
patent: 3861888 (1975-01-01), Heise et al.
patent: 3932172 (1976-01-01), Knuppel et al.
patent: 4165233 (1979-08-01), Gagneraud
patent: 4225565 (1980-09-01), Marukawa et al.
patent: 4321088 (1982-03-01), Boehm et al.
patent: 4398948 (1983-08-01), Emoto et al.
patent: 4415142 (1983-11-01), Hegemann et al.
patent: 4456477 (1984-06-01), Masuda et al.
patent: 4458883 (1984-07-01), Billings et al.
patent: 4518421 (1985-05-01), Foulard
patent: 4614216 (1986-09-01), Savard et al.
patent: 4652287 (1987-03-01), Allen et al.
patent: 4664703 (1987-05-01), Landreth
patent: 4666511 (1987-05-01), Naud
patent: 4780119 (1988-10-01), Brooke
patent: 4781122 (1988-11-01), Foulard et al.
patent: 4814006 (1989-03-01), Gorjup et al.
patent: 4915362 (1990-04-01), Borasci et al.
patent: 4916922 (1990-04-01), Mullens
patent: 4990183 (1991-02-01), Anderson et al.
patent: 5148679 (1992-09-01), Eve
Klaus Grutzmacher, Hans de Haas, Horstmar Mohnkern, Klaus Ulrich und Helmet Kahnwald, "Staubunterdruckung in HochofengieBhallen", Stahl u. Eisen 111, (1991), No. 3, Mar. 15, 1991.

Affiliated with

Also associated with

Rating

Method of suppressing dust and fumes during electric steel produ 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 of suppressing dust and fumes during electric steel produ, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of suppressing dust and fumes during electric steel produ will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-35242