Seznam abstraktů 2025: SEKCE F - EKONOMIKA A ŘÍZENÍ VÝROBY V HUTNÍM, OCELÁŘSKÉM A NAVAZUJÍCÍM PRŮMYSLU

Die casting continues to play an important role in producing key automobile components such as engine blocks, transmission housings and new parts related to electromobility. Die casting is the main production technology for aluminium alloys. Due to the nature of the foundry process, the operation of the foundry consumes a lot of energy. To achieve a high degree of production efficiency, it is therefore increasingly important to monitor energy consumption and possible leakages of operating fluids, which can cause high losses. Thanks to the development of digitalization and trends such as Industry 4.0, it is now possible to effectively monitor individual production machines. The data collected from production machines can then be used to analyse operational data and monitor production trends and production stability. It is also necessary to compare the results with the expected consumption values according to the actual production and possibly also with changes in climatic conditions, thus the usage of effective consumption management. The paper presents the foundry operation and the production process of castings at Škoda Auto. The main benefits of using digitalization into the foundry operation are presented. Furthermore, the possibilities of using data to increase the efficiency of foundry production are mentioned. Production data can also be used to accurately identify individual products and thus for retrospective analysis of products concerning the level of quality achieved. Thanks to the precise monitoring of the foundry's operation in a real-time digital environment, potential problems can be detected early and solved very quickly and efficiently.

In the current business environment, characterised by globalisation and technological advances, metallurgical companies are facing unprecedented challenges. In order to maintain competitiveness, these companies must demonstrate a capacity to respond to these emerging trends. In the context of intensifying competition and the pressure to reduce costs, the pursuit of innovative solutions to optimise logistics process is necessary. The implementation of advanced decision support systems supports the pivotal role of innovation and technological progress in ensuring sustained competitiveness in the metallurgical industry. The aim of paper is to present a methodology for the development of a dynamic multi-criteria decision support system for the management of distribution warehouses in the metallurgical industry in order to optimise storage, picking and loading processes. The methodology is based on a comprehensive process analysis of the warehouse management system and the identification of key factors influencing the decision-making processes. The development of a system utilizes the multi-criteria decision-making method of Analytic Hierarchy Process (AHP), with the objective of evaluating and recommending optimal storage locations based on a selection of criteria. These criteria encompass trade-offs between production, logistics and warehouse requirements, including distance from critical points and warehouse location. The proposed model was tested on selected warehouse events under defined conditions, which demonstrated its potential to significantly improve the efficiency of the distribution warehouse management system, thus increasing the competitiveness in the metallurgical industry. The proposed methodology for both process analysis and decision support system design has been generalized for wider use across the metallurgical industry.

Refractory materials have been around since the inception of human civilization. They have played a significant role in the development of pyrometallurgical processes. Therefore, it is important to be acquainted with the challenges and opportunities presented by the industry. The industry faces several challenges; mainly supply chain issues, which include freight cost and raw material availability, rising cost of virgin raw materials and change in quality, changing process conditions, environmental and sustainability issues. All these contribute to a circular economy or lack thereof. One of the preferred remedies in the industry is circular economy. This is because of its multi-faceted benefits namely, reduce, reuse and recycle, called 3Rs philosophy. Huge strides have been achieved in the recycling of refractories, also referred to as grog-based products in monolithics or unshaped refractories. However, limited research is available on the use of grog in shaped or brick type refractories. The use of grog has been well entrenched and integral in reducing the cost of monolithics with controlled quantities for non-critical applications. However, the interaction between virgin-grog bricks and different types of slags is yet to be understood as these bricks may appear to have unchanged elemental chemical composition, they may have mineralogical changes with non-uniform phases. This is a challenge because of weak links that may be created for corrosion propagation. This paper discusses the challenges faced by the industry in relation to possible deviations resulting from the use of grog in shaped refractories.

Wastewater contaminant emissions are currently of global concern because of the risks they pose to the ecosystem and human health. A variety of removal approaches have been developed to neutralize contaminants in wastewater. Coagulation is an important and easy-to-implement process for the treatment of wastewater and to adopt point-of-use solutions. The use of synthetic coal fly ash has shown effectiveness in the treatment of wastewater and to minimize the quantity of waste sent to disposal sites, thereby helping to reduce the impact on the environment. Coal fly ash-based coagulants are highly effective in treating wastewater, however, their substantial potential for purifying wastewaters has yet to be exploited on a commercial scale. This paper aims to present the different techniques for preparing coal fly ash-based coagulants for water and wastewater treatment, to give these products a competitive edge over traditional options on the market. This paper also depicts the recent success of coal fly ash-based coagulants in treating a range of wastewaters.