Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium
Patent
1985-05-06
1986-04-08
Rosenberg, Peter D.
Specialized metallurgical processes, compositions for use therei
Processes
Free metal or alloy reductant contains magnesium
75 53, 75 57, 75 58, 75257, C21C 700
Patent
active
045810680
ABSTRACT:
A shaped body for feeding cupola furnaces in the melting of cast iron composed of a silicon carrier as an alloying material, a slag-forming material and free carbon. The silicon carrier is in the form of SiC and/or FeSi. The slag-forming material is made of SiO.sub.2, Al.sub.2 O.sub.3 and CaO. In order to avoid the loss of silicon and have a silicon yield that may be safely controlled without the use of graphite when such bodies are used in unlined hot-blast cupola furnaces with steel scrap proportions in excess of 30% of the charge, the present invention uses free carbon in the form of calcined petroleum-, pitch-, or acicular coke or a combination thereof. Additionally, the ratio of SiO.sub.2 to free carbon is in the range of 2-4 and the basicity of the slag-forming material is in the range of 0.2-1.4. A method for using the shaped body in unlined hot-blast cupola furnaces to make cast iron is also disclosed.
REFERENCES:
patent: 3579325 (1971-05-01), Stone
patent: 3788840 (1974-01-01), Koenig
patent: 3957502 (1976-05-01), Cull
patent: 4225343 (1980-09-01), Guarino
patent: 4248631 (1981-02-01), More
patent: 4292075 (1981-09-01), Wolfsgruber
Frank & Schulte GmbH
Rosenberg Peter D.
LandOfFree
Shaped body for feeding cupola furnaces does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Shaped body for feeding cupola furnaces, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Shaped body for feeding cupola furnaces will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2064091