Melting and refining furnace for cold iron source and method of operating melting and refining furnace
AssigneeTaiyo Nippon Sanso Corporation
InventorsYoshiyuki HAGIHARA, Yasuyuki YAMAMOTO, Naoki SEINO
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Abstract
One object of the present invention is to improve efficiency at the time of operation of a melting and refining furnace of a cold iron source using an oxygen burner lance, and the present invention provides a melting and refining furnace comprising a through-hole provided through a furnace wall, one or more oxygen burner lances provided in the through-hole: and a thermometer which is configured to measure a temperature in the furnace, the oxygen burner lance has one or more openings communicating with the inside of the furnace, and the thermometer is provided in any one of the openings.
Claims11
A melting and refining furnace comprising an oxygen burner lance which is configured to eject a combustion-supporting fluid containing oxygen and a fuel fluid toward a cold iron source in the furnace,
- wherein the melting and refining furnace further comprises:
- a through-hole provided through a furnace wall:
- one or more oxygen burner lances provided in the through-hole:
- and
- a thermometer which is configured to measure a temperature in the furnace,
- the oxygen burner lance has one or more openings communicating with the inside of the furnace, and the thermometer is provided in any one of the openings.
A method of operating a melting and refining furnace in which a combustion-supporting fluid containing oxygen and a fuel fluid are ejected toward a cold iron source in the furnace by an oxygen burner lance, wherein the method comprises:
- measuring a temperature in the furnace by a thermometer provided in the oxygen burner lance;
- and
- controlling a supply amount of the combustion-supporting fluid and the fuel fluid to be supplied into the furnace based on a measured value of the temperature in the furnace.
A method of operating a melting and refining furnace in which a combustion-supporting fluid containing oxygen and a fuel fluid are ejected toward a cold iron source in the furnace by an oxygen burner lance, wherein the method comprises:
- measuring a temperature in the furnace by a thermometer provided in the oxygen burner lance;
- measuring a concentration of a component contained in an exhaust gas discharged from the furnace and a flow rate of the exhaust gas;
- and
- controlling a supply amount of the combustion-supporting fluid, the fuel fluid, and a carbon source which are supplied into the furnace based on the temperature in the furnace, the concentration of the component, and the flow rate of the exhaust gas.
Dependencies are inferred from the claim text.