Abstract
Problem statement (relevance of the work): the article describes the existing technology of processing metallurgical slags in the production conditions. The characteristic features of the technology are presented. The efficiency of metallurgical slag processing is evaluated. The purpose of the work: to evaluate the efficiency of processing metallurgical slags in 2018 and 2019. Methods used: a method for evaluating the efficiency of metallurgical slag processing through the volumes of obtained magnetic fractions at metallurgical slag processing plants and saving raw materials for the production to the return of magnetic fractions to the metallurgical cycle. Novelty: the novelty elements include a method for evaluating the efficiency of metallurgical slag processing, expressed in saving raw materials for the production of cast iron and steel to the metal-containing fractions obtained from slag. Result: the article provides an assessment of the efficiency of metallurgical slag processing in 2018 and 2019. The analysis presents the savings of raw materials for agglomeration, blast furnace, oxygen converter and electric steelmaking productions to the re-turn of metal-containing fractions obtained from slag to these productions. The proposed method for evaluating the efficiency of metallurgical slag processing allowed us to evaluate the effect of slag processing without taking into account the changing cost of raw materials. Practical significance: initial data have been obtained to assess the economic efficiency of metallurgical slag processing.
Keywords
Blast furnace slag, oxygen converter production slag, electric steelmaking slag, slag granulation, recycling, slag dump, reclamation.