METHOD OF CHARGING CHROMIUM ORES IN A SMELTING REDUCTION

摘要

The invention is concerned with a method of charging raw materials in a smelting reduction of ores using a smelting reduction converter furnace comprising a vessel for holding molten metal and slag, means for supplying a first gas into the slag, a mouth and a hollow chute located at the mouth of the furnace for supplying raw ore therethrough into the vessel. The method of the invention comprises the steps of charging raw ore into the vessel of the furnace through the hollow chute; and concurrently with the charging of raw ore supplying a second gas inside the hollow chute and substantially about the inner circumferential periphery thereof and in the same direction of travel as the charging raw ore, so as to substantially surround the raw ore while traveling through the hollow chute and while traveling into the vessel of the furnace, thereby to prevent flying of the charging raw ore.