Community Research and Development Information Service - CORDIS


The demand and production of sponge iron using direct reduction processes is increasing. Fluidized bed technology is theoretically the most efficient of the direct reduction technologies, but difficulties exist with the agglomerate behaviour of the ores during the chemical reduction of the fine material. Known as "sticking", the fluidized bed changes into a continuous solid-bed, interrupted by channels, so that the main part of the bed no longer has contact with gas, and means that the reduction process cannot be completed. A test fluidized bed showed that ores began to agglomerate at a temperature of 750 degrees centigrade, and that the avoidance of very fine material and the treatment of ores with a water cement or water aluminiumoxide slurry decreased the sticking behaviour of iron ore.

Additional information

Authors: GUDENAU H W, RWTH, Aachen (DE)
Bibliographic Reference: EUR 18637 DE (1998) 165pp.
Availability: Available from OOPEC Sales agents
ISBN: ISBN 92-828-5000-5
Record Number: 199910334 / Last updated on: 1999-03-15
Original language: de
Available languages: de