Process of producing quality steel directly from iron ores

Details Process of producing quality steel directly from iron ores Process of producing quality steel directly from iron ores

C - Chemistry, Metallurgy

21

C

53/85

C21C 7/072 (2006.01)

Patent

CA 2024236

ABSTRACT OF THE INVENTION The present invention is a process of producing quality steel directly from iron ores with reducing gas. Preferable the iron ores are partially reduced in a primary reduction vessel by the reducing gas which is produced in a gas production vessel and the secondary reduction to molten steel takes place in a third, high temperature vessel into the top of which the partially reduced iron ores are introduced, preferably with slag ingredients, and in the bottom of which the molten steel, with a layer of slag floating on it, is held prior to batch withdrawal. The molten steel bath may be carbonaceous or oxidizing as produced but if it is carbonaceous it must be converted to oxidizing before withdrawing steel, Into the high temperature vessel are introduced (a) superheated reducing gas into the molten steel bath, and (b) coke and oxygen above it which react to form a reducing gas that rises countercurrent to descending partially reduced iron ores and slag ingredients and flows from the tip of the high temperature vessel into the gas production vessel where waste heat is converted to chemical energy vessel in the presence of carbonaceous materials, steam and carbon dioxide. These materials by an exothermic reaction form a hot, strong reducing gas comprising hydrogen and carbon monoxide, (a) part of which may be used for he primary reduction and (b) part of which may used for the secondary reduction of the ores. Tiny particles in the withdrawn gas are removed when it passes through the carbonaceous material in the gas production vessel. Sulfur and phosphorus present in starting materials are removed.

Affiliated with

Also associated with

Rating

Process of producing quality steel directly from iron ores 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 of producing quality steel directly from iron ores, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process of producing quality steel directly from iron ores will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1662002