Oxygen-enriched sintering technique

Abstract

The present invention relates to a rich oxygen sintering technology, which comprises ignition rich oxygen and heat preservation rich oxygen, namely, the rich oxygen sintering is used in both the ignition section and the heat preservation section of a continuous strand sinter machine. The rich oxygen sintering technology has the technical proposal that: first, ignition rich oxygen: oxygen with 93 percent purity produced with an adsorption oxygen producing system is delivered to a combustion-supporting pipeline after passing through a pressurization pump, a transfer pipeline, a flow dividing valve, and a pressure reduction valve, the oxygen and the combustion-supporting air in the combustion-supporting pipeline are mixed, to form the required combustion-supporting air with rich oxygen, and the oxygen content in the combustion-supporting air with rich oxygen is 22 to 25 percent; then ignition is performed after the combustion-supporting air with rich oxygen and coke oven gas is mixed with 2.7: 1 to 4.2:1 proportion of the combustion-supporting air with rich oxygen and the coke oven gas; second, heat preservation rich oxygen: oxygen with 93 percent purity produced with an adsorption oxygen producing system is delivered to an oxygen supply apparatus after passing through a pressurization pump, a transfer pipeline, a flow dividing valve, and a pressure reduction valve, the oxygen supply apparatus adds oxygen to the sintering heat preservation section through the periphery of a heat preservation cover, to lead the oxygen content in the heat preservation atmosphere after being filled with oxygen to achieve 22 to 30 percent, and the rich oxygen is supplied to the sintering material layer through forceful air draught.

Description

technical field [0001] The invention relates to an oxygen-enriched sintering technology used in the ignition section and the heat preservation section of a belt sintering machine, and belongs to the technical field of sintering production in the iron and steel industry. Background technique [0002] Oxygen-enriched sintering is to supply oxygen-enriched material into the sintering material layer, and its effect is to accelerate the combustion process of solid fuel, activate the reactivity of combustible elements and solid fuel in the mixture, and reduce the consumption of solid fuel; reduce the content of FeO, increase the strength of sinter, and increase the Yield and output, reduce pulverization rate, improve sinter quality, reduce environmental pollution, provide conditions for blast furnace to increase pig iron output, reduce coke ratio, have significant economic and social benefits, and are in line with my country's basic national policy of energy saving and consumption r...

AI Technical Summary

Problems solved by technology

This kind of oxygen-enriched sintering is only used in the sintering ignition section, and only oxygen-enriched sintering is used in the sintering ignition section, and there are still disadvantages of large fuel consumption.

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