Abstract
This article presents the main technical-economic, technological and qualitative characteristics of sinter production at the "Ural Steel" Joint Stock Company. According to technical reports on the sintering shop operation, the performance of sinter production and quality of sinter have been evaluated. The main technical and technological factors limiting the performance of sinter production at the "Ural Steel" Joint Stock Company have been determined. The article contains a critical review of the known methods improving efficiency of the sintering process with due regard to the profile of the existing sinter production. The authors propose a priority method for improving the sinter output produced at the "Ural Steel" Joint Stock Company suggesting that mineral additives promoting pelletizing and accelerating mineral formation during sintering should be used in the sinter charge. This option of sintering process improvement fosters an integrated effect on the sinter charge preparation, flow of the sintering process, and does not require any significant adjustment of technology and equipment. It makes most sense to use local resources such as Orsk-Khalilov brown iron ore deposits, Khalilov serpentinite deposits, and Novokievsk and Voskresensk bentonite clay deposits as mineral additives in the setting of the "Ural Steel" Joint Stock Company. The article presents data on the chemical and mineralogical composition of these materials. Based on these data, conclusions on the behavior of mineral additives during sintering have been drawn. Laboratory experiments have substaintiated positive effects of these additives on the progress and results of sintering. In addition, their inclusion in the production process will lower transportation costs, solve environmental problems of open deposits in the region, and ensure a comprehensive use of mineral resources in the Orenburg region. To ensure a sustainable use of mineral additives, it is necessary to supply them with water when moistening the sinter charge into slurry, which will ensure their valuable contribution to sintering charge pelletization and sintering.
Keywords
Sinter charge, pelletizing, sintering, brown iron ore, bentonite clay, serpentinite.
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