Optimisation of ferriferous dust and mud preparation acts from iron and steel production on purpose of returning to primary processes

Abstract

In this paper detailed characterization of ferriferous dust and mud which originated from aglomerization, blast- furnace and converter process in Iron-works Smederevo were shown. Optimization of method peletization was conducted in variably conditions (different moinsture content, changing of time of peletization and type of binder). These palets were submitted to examination of resistance on impact and pressure, and their behavior was confirmed returning in sintering process in semiindustrial conditions. Ideally-technological solution for plant preparation of dust and mud in Iron-works Smederevo was recommended. That solution should contribute to improvement of techno-economic parameters of aglomeration and blast- furnace process, as well as solution of ecological problem.

U radu su prikazani rezultati detaljne karakterizacije prašina i muljeva aglomeracionog, visokopećnog i konvertorskog procesa Železare Smederevo. Optimizirana je njihova priprema postupkom peletizacije u promenljivim uslovima (različiti sadržaji vlage, promena vremena peletiziranja i vrste veziva) u cilju vraćanja u primarne procese svih korisnih komponenti koje sadrže. Dobijene pelete su podvrgnute ispitivanjima otpornosti na udar i pritisak. Utvrđena je njihova pogodnost za sinterovanje u poluindustrijskim uslovima. Predloženo je idejno tehnološko rešenje izgradnje postrojenja za pripremu prašina i muljeva u Železari Smederevo, koje bi trebalo da doprinese poboljšanju tehno-ekonomskih parametara aglomeracionog i visokopećnog procesa, uz istovremeno rešavanje ekološkog problema.