PLANT FOR DIRECTLY REDUCING IRON OXIDES AND FOR PRODUCING AN IRON MELT

摘要

The inventive method consists in loading a charging material into a reducing reactor (1), in reducing said material by a gas which is introduced into reactor separately around a charging material column in the form of two transverse high-temperature areas, in forming the lower area (5) by means of waste gases which exit from the reducing reactor and are compressed in a plasmochemical gas-generator (8) after dry cleaning and in forming a second reducing area (4), which is arranged above the lower area and in which a cleaned gas exiting from plasma melting furnaces (2) is used in the form a reducing gas. The metallised charging material of the reactor (1) is discharged by two flows, i.e. for caking and for loading into said plasma melting furnaces (2). In the case of a high reactor (1), the inventive method also consists in preheating the charging material by partially burning reducing gas in an additional airflow which is introduced by blowing jets along the circumference of the reactor in the top part of the charging material column through a manifold (15). The plasmotrons of the plasmochemical gas-generator (8) and melting furnaces (2) are connected at the output to a power supply, a waste gas preparation unit (14) and to main pipelines for supplying water and natural gas.