Main stages of the technology and equipment perfection at JSC EVRAZ ZSMK sintering plant

Abstract

Data on sintering plant of OJSC EVRAZ ZSMK, its structure, stages of construction, main designing solutions, operation indices and structural changes presented. Main directions of technology and equipment perfection shown. From the moment of the sintering plant putting into operation, it operated by the designed plan, which met the existing in early 70th of the former century requirements of fluxed sinter production technology. Later the flowchart, technology and the aggregates subjected to considerable modifications. The main efforts of researchers and the plant personal developments directed on the study of the burden components and obtained sinter properties, elaboration of a technology of new kinds of raw materials sintering, optimization of main parameters of the sintering process technological regime, external heating and the burden components preparation. Besides new technological units and equipment implemented and their operation modes mastered, as well as that of process intensification. In addition, the plant personal paid much attention to the sinter quality and technical and economic indices improving, to ecology and wastes utilization, as well as elaboration of a technology of special kinds of sinter production after BF No. 2 stop and some capacity releasing. At present, the two-layer burden sintering technology mastered at all the sintering machines with the layer height500 mm. The work on modernization of the main and auxiliary plant equipment accomplished continuously. Automated control systems widely used at the plant to control the following: the quality of the incoming raw materials, supply and consumption of raw materials, calculation of the stacks, concentrate liming, the burden components and fuel dozing, the burden moistening, the burden preparation and sintering, the plant running, sinter and energy carriers accounting as well as information and technological circuit. At present, a big volume of work planned, directed on polluting substances emissions lowering, volume of production increasing and sinter quality improving, as well as production and operation costs decreasing.