PROCESS AND PLANT FOR RECYCLING IRON-CONTAINING RESIDUES FROM THE STEEL AND IRON INDUSTRY

摘要

PCT No. PCT/AT96/00079 Sec. 371 Date Dec. 30, 1996 Sec. 102(e) Date Dec. 30, 1996 PCT Filed Apr. 23, 1996 PCT Pub. No. WO96/34120 PCT Pub. Date Oct. 31, 1996In a method of processing iron-containing metallurgical residual substances, offgases containing iron-containing particles are washed out in a wet process and separated in the form of sludge. The sludge is then dehydrated and agglomerated; subsequently, the agglomerates are recycled into an iron melt production process. To recover the iron contained in the sludge, the agglomerates are passed exclusively into a refining stage of the steel production process. The present method may be used in a steel production process which produces steel from pig iron, as well as optionally from scrap and/or iron ore and/or sponge iron. The refining stage is performed using an oxygen blowing process.