Process and device for coating a fusion gasifier with gasifying means and spongy iron

摘要

The invention relates to a device comprising a fusion gasifier and a reduction shaft arranged thereabove and for reduction of iron ore in spongy iron. The spongy iron is introduced through horizontal discharge devices in the lower section of the reduction shaft, and a pipe connection is introduced into the head section of the fusion gasifier where it is melted using a oxygen-containing gas and gasifying means also conveyed into the head of the fusion gasifier, and is reduced to liquid crude iron. A reduction gas is produced at the same time which is conveyed out of the head of the fusion gasifier. The discharge devices lead into a dust-blocking container arranged in a lower section of the reduction shaft and to which the pipe connection leading to the fusion gasifier is attached. The dust-blocking container is connected to a feed device for a seal gas at a higher pressure than the gas pressure in the head of the fusion gasifier thereby preventing gasifying gas from passing into the reduction shaft via the pipe connection. Humidity and volatile constituents have A already been removed from the gasifying means before introducton into the fusion gasifier as a result of mixing hot spongy iron with the gasifying means before the introduction thereof into the center of the gasifier head.