Title:
炉内残留スラグ量の推定方法および推定装置
Document Type and Number:
Japanese Patent JP6841391
Kind Code:
B2
Abstract:
Provided is an easy and highly accurate method for estimating the amount of residual slag in a furnace when, after desiliconization or dephosphorization in a converter, slag is removed from the throat while retaining molten iron in the converter by tilting the converter. The method for estimating the amount of residual slag in a furnace comprises: a step A for measuring the slag height in the converter multiple times or continuously after the desiliconization or dephosphorization and prior to starting slag removal; a step B for estimating foam suppression characteristics of the slag in the furnace on the basis of the results measured in step A; and a step C for estimating the amount of residual slag in the furnace on the basis of the suppression characteristics estimated in step B and the converter tilting pattern.
Inventors:
Kenichiro Naito
Asahara Norifumi
Takao Nakagiri
Asahara Norifumi
Takao Nakagiri
Application Number:
JP2020561404A
Publication Date:
March 10, 2021
Filing Date:
December 16, 2019
Export Citation:
Assignee:
Nippon Steel Corporation
International Classes:
C21C5/46; C21C5/28; F27D21/00
Domestic Patent References:
| JP2018119195A | ||||
| JP200777483A |
Foreign References:
| WO2018020929A1 | ||||
| US4749171 | ||||
| US20090230159 |
Attorney, Agent or Firm:
Patent Service Corporation Taiyo International Patent Office