| 摘要 |
<P>PROBLEM TO BE SOLVED: To accurately predict a heat radiation loss in blowing while preventing deterioration in maintenance properties and durability even in direct measurement of surface temperature of a lining refractory. <P>SOLUTION: In a blowing static control in a converter steel making process using a top-blowing lance, a target component of the molten steel in tapping at the end of blowing and quantities of a flux and oxygen necessary for a target temperature are calculated from the information of molten iron and scrap to be charged. The surface temperature of the lining refractory of a converter is measured by a radiation thermometer, a heat release curve is found from the measured temperature and temporal information, and a temperature drop in the subsequent blowing is predicted and taken into heat balance calculation. The heat radiation loss in blowing can be predicted accurately. Since the direct measurement is performed by the radiation thermometer, no deterioration in maintenance properties and durability occur. <P>COPYRIGHT: (C)2012,JPO&INPIT |
