In-furnace slag level measuring method and apparatus therefor
AssigneeNKK Corporation
InventorsAkio Nagamune, Kouichi Tezuka, Isamu Komine, Shinji Kuriyama, Masaki Komatani, Akihiko Inoue
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Abstract
Disclosed is a in-furnace slag level measuring method for measuring a slag level in a convertor and an apparatus therefor. A sublance and an antenna of a microwaver radar are arranged exchangeable therebetween so that the sublance and the antenna are alternatively inserted in to the convertor from about the convertor. The antenna is inserted into the convertor in first and middle stage of the refining operation of the converter to thereby measure the slag level, and the sublance is inserted into the convertor to thereby perform various measurement.
Claims9
An in-furnace slag level measuring apparatus comprising:
- a first rotator attached to a beam;
- a first supporting member connected to said first rotator so as to be rotated about said beam by said first rotator;
- a waveguide;
- a first lift connected to a top of said first supporting member for controlling up/down movement of said waveguide;
- a convertor with a lance hole;
- an antenna connected to said waveguide to be inserted into said convertor during the first and middle stages of refining period through said lance hole on said convertor hood by being driven by said first rotator and said first lift;
- a microwave radar connected to said antenna through said waveguide for transmitting microwave modulated by pseudo random signal through said antenna during the first and middle stages of refining period for receiving a reflection wave from the slag surface to measure a turnaround time of propagation and calculate the slag level from it;
- a second rotator attached to said beam;
- a second supporting member connected to said second rotator so as to be rotated about said beam by said second rotator;
- a second lift connected to a top of said second supporting member for controlling up/down movement of a sublance;
- and
- said sublance to be inserted into the convertor through said hold during the last stage of refining period by being driven by said second rotator and said second lift for performing various measurements.
Dependencies are inferred from the claim text.