| 摘要 |
<p>PCT No. PCT/SU88/00146 Sec. 371 Date Feb. 23, 1990 Sec. 102(e) Date Feb. 23, 1990 PCT Filed Jul. 26, 1988 PCT Pub. No. WO90/01071 PCT Pub. Date Feb. 8, 1990.The invention contemplates smelting in a steelmaking unit a carbon-containing semiproduct, tapping it into a ladle, supplying to the ladle slag-forming materials, a reducer and thermally pretreated oxide materials containing alloying elements. The supply of said oxide materials is started after the tapping of the carbon-containing semiproduct in an amount of minimum 0.25 and maximum 0.5 by mass thereof, is carried out during the tapping of this semiproduct and completed before completing the tapping of the carbon-containing semiproduct. The supply of a reducer is carried out after the supply of said oxide materials and is completed before the end of the tapping of the carbon-containing semiproduct.</p> |
