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  • Author: Simona Jursova x
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Application of Low Carbon Technology in Metallurgy

Abstract

The paper deals with possibilities of low carbon technology application in metallurgy. It sums up the world wide experience with them and presents possibilities of their application in metallurgical production in view of carbon dioxide emission responsible for greenhouse effect and global warming of the Earth. It summarizes research projects in this field and presents the results and conclusion resulting from them. It is aimed at the possibilities of low carbon application in sinter and subsequently in blast furnace process. It presents research on reducibility of metallurgical ekosinter produced with share of biomass in comparison with sample of industrial one. It describes the testing methodology carried out in accordance with ISO 4695:2007. The samples were tested in reduction atmosphere created by 40% CO2 and 60% N2 simulating conditions in blast furnace aggregate at temperature 950°C. The obtained results confirmed better reducibility rate of ekosinter which reached the reduction index (dR/dt) 1.15, in comparison with industrial sinter of reduction index 0.83.

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The Analysis of Selected Relationships Between Human Resource Management Style and the Effectiveness of Knowledge Management

Abstract

The creation, dissemination and use of knowledge depends on many factors related to both the specificity of the enterprise, the type of organizational solution, the style of human resource management used, the potential of employees and, above all, the ability of the company to use this potential. From the point of view of efficiency of acquiring, disseminating and using knowledge in the enterprise, human resources management is of key importance. Methods and techniques used in this area should be thoroughly analyzed and critically evaluated in terms of their relevance and real positive impact on knowledge management. This study attempts to analyze selected issues related to the company’s management style, the existing variant of the organizational structure and the general assumptions of the knowledge management system. The main goal of the study was to identify trends and dependencies between these factors in the context of knowledge management effectiveness. The study used a questionnaire consisting of 63 questions. In individual companies the questionnaire was each time filled in by the representative of the company’s top management. The study presents a part of the examined issues directly related to the indicated topic based on data obtained from 105 enterprises.

Open access
The Evaluation of Efficiency of the Use of Machine Working Time in the Industrial Company – Case Study

Abstract

In the paper the evaluation of efficiency of the use of machines in the selected production company was presented. The OEE method (Overall Equipment Effectiveness) was used for the analysis. The selected company deals with the production of tapered roller bearings. The analysis of effectiveness was done for 17 automatic grinding lines working in the department of grinding rollers. Low level of efficiency of machines was affected by problems with the availability of machines and devices. The causes of machine downtime on these lines was also analyzed. Three basic causes of downtime were identified: no kanban card, diamonding, no operator. Ways to improve the use of these machines were suggested. The analysis takes into account the actual results from the production process and covers the period of one calendar year.

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Ecological and Economic Benefits and Safety of the Use of Coal Gas in Industry

Abstract

Possibilities Of Use Of Degassing And Carbon Gas In Industry. Degassing Gas Represents A Waste During Coal Mining So Far And This Issue Is Not Effectively Solved In Ostrava Region Up Till Now Ecological Aspects, Safety, Economic Aspects. Coal Deposits Represent A Special Case In Which The Deposit Is Both A Source Of Coal And Reservoir Of Gas. For The Thing Is That, In The Process Of Coalification Of Plant Residue, Coal Bed Gas Came Into Being Of Which The Main Component Is Methane. Gas From Mining Degassing Can Be Used As A Substitute Fuel For The Blowing Of Blast Furnaces. This Would Not Only Make It Possible To Reduce The Specific Consumption Of Coke, But Also Contribute To A Better Blast Furnace. An Economic Effect Is Also Negligible If We Characterize Degassing Gas As Waste Gas.

Open access