Search

The assessment of selected quality parameters of sinter and the effect of the its quality on the efficiency of blast furnace process is presented. The analysis of chemical composition of sinter was conducted. As a main quality parameter sinter richness (Fe content) was selected. Then influence of sinter richness on two parameters of efficiency was calculated. The study was carried out in cooperation with a Blast-Furnace Department of a Polish steelworks and was based on the results coming from this Department. The analysis covers the period of one calendar year.

The assessment of quality of coke and its consumption in blast furnace process is presented in the paper. The statistical analysis of three basic parameters of coke was made. As a main quality parameters: moisture content, ash content in the dry state, volatile matter content in dry state and calorific value were selected. Then influence of two selected parameters of coke on fuel consumption was calculated. The study was carried out in cooperation with a Blast-Furnace Department of a Polish steelworks and was based on the results coming from this Department. The analysis covers the period of three calendar years.

The assessment of influence of quality of ferrous charge materials on the efficiency parameters of blast furnace process is presented. The analysis of structure of ferrous charge materials was made. As a main quality parameter charge richness was selected. Then influence of charge richness on four parameters of efficiency was calculated. The study was carried out in cooperation with a Blast-Furnace Department of a Polish steelworks and was based on the results coming from this Department. The analysis covers the period of one calendar year.

The paper presents results of the analysis of selected indicators used to assess the efficiency of blast furnace operation: running time operation, plan fulfilment, unit daily production of pig iron and the influence of these parameters on monthly pig iron production and intensity of coke combustion. The study was carried out in cooperation with a Blast-Furnace Department of a Polish steelworks and was based on the results coming from this Department. The analysis covers the period of one calendar year.

The paper presents results of the analysis of selected parameters of blast furnace operation and the influence of various factors on them. The study was carried out in cooperation with a Blast-Furnace Department of a Polish steelworks and was based on the results coming from this Department. The analysis covers the period of one calendar year.

In this paper an attempt was made to identify the areas of metal products manufacturing processes that require improvement. Determination of such areas may become a source of a lot of valuable information for the enterprise, enabling the development of its improvement directions. The results of survey allowed also to define a model of implementation importance for tasks contributing to the metal sector enterprises improvement.

This article presents an attempt to analyze the impact of global conditions on the functionality of the steel industry country – member of the European Union. The paper presents data describing trends and phenomena occurring in the global steel industry, and selected economic indicators describing the economic situation, which allowed the comparison of local changes with the trends disclosed in European and global scale.

In this paper authors submit a method of quality estimation for metallurgical products. The method include three aspects: product’s fulfillment of appointed properties (essential sense of quality), product’s fulfillment of requirements of environmental protection (liquidation quality, level of waste management, energetic quality), onerousness of production process for health of workers.

The article presents the current possibilities for the utilization of blast-furnace and steelmaking slag in the realities of the Polish economy. Particular consideration is given to the legislation applicable to this area and to the physical and chemical requirements imposed on this material. Some aspects of environmental protection are described, and selected indicators are given, which must be met by this material to be used in various fields, such as road construction or cement production. Economical factors that are crucial to perceiving the slag as a standard valuable metallurgical product is also taken into consideration in the analysis.