US 2022/0340986 A1 · CONVERTER CO2-O2 MIXED INJECTION SMELTING METHOD AND METHOD OF DYNAMICALLY CONTROLLING FIRE POINT AREA TEMPERATURE

Abstract

The present disclosure provides a converter CO2—O2 mixed injection smelting method and a fire point area temperature dynamic control method. The method realizes online monitoring through an infrared temperature sensor installed inside an oxygen lance, dynamically adjusts the mixing ratio of CO2 and O2 and the height of the oxygen lance position according to the fire point area temperature changes and process requirements in different smelting stages, so that the secondary smelting system interlockingly and dynamically controls the fire point area temperature and the molten pool heating rate.

Claims21

Dependent claims

A converter CO2—O2 mixed injection smelting method, wherein a converter CO2—O2 mixed injection smelting process comprises a smelting beginning stage, a heating and slagging stage, an early efficient dephosphorization stage, a rapid decarburization stage, and an endpoint control stage;

and wherein the converter CO2—O2 mixed injection smelting method comprises:
measuring a fire point area temperature in each of the smelting beginning stage, the heating and slagging stage, the early efficient dephosphorization stage, the rapid decarburization stage and the endpoint control stage, so as to control the fire point area temperature and dynamically adjust a CO2 mixing ratio.

A method of dynamically controlling a converter CO2—O2 mixed injection smelting fire point area temperature, wherein a converter CO2—O2 mixed injection smelting process comprises a smelting beginning stage, a heating and slagging stage, an early efficient dephosphorization stage, a rapid decarburization stage and an endpoint control stage;

and
wherein the method of dynamically controlling the converter CO2—O2 mixed injection smelting fire point area temperature comprises:
measuring a fire point area temperature in each of the smelting beginning stage, the heating and slagging stage, the early efficient dephosphorization stage, the rapid decarburization stage and the endpoint control stage, so as to control the fire point area temperature and dynamically adjust a CO2 mixing ratio.

Dependencies are inferred from the claim text.

Converter co2-o2 mixed injection smelting method and method of dynamically controlling fire point area temperature

Life of this patent

Converter co2-o2 mixed injection smelting method and method of dynamically controlling fire point area temperature

Life of this patent

Abstract

Claims21