| 摘要 |
PURPOSE:To obtain titled metals without using expensive electric furnace refining method by blowing Al2O3-, SiO2-contg. compd. together with high temp. air into a vertical furnace formed with stacked and packed layers of a solid reducing agent contg. carbon and a low m.p. compsn. contg. iron. CONSTITUTION:A solid reducing agent contg. carbon and, for example, sintered ore of iron ore are charged alternately into a vertical furnace 1 from charging means 2, 3 at the furnace top, thereby forming packed layers wherein both are stacked alternately. Plural tuyeres 4 are provided in a single stage or in each of plural upper and lower stages, for example, three stages, in the lower part of the furnace 1, and ore contg. a large amt. of Al2O3 or SiO2 is blown together with hot wind through >=1 stages of the tuyeres, for example, tuyeres 4b, and hot wind is blown through the tuyeres 4a, 4c. The melt of Al or Si reduced and formed in the packed layers fuses with the molten iron formed by reduction of the sintered ore and drops as molten metal contg. Fe-Al or Fe-Si and is discharged from the discharge port 6 on the side wall in the hearth part. |
