Imrich Koštial

Advanced process manipulation of magnesia sintering

Manipulation process is connecting of our macroscopic world to the microscopic or nanoscopic one. Manipulation can occur in a variety of ways. Outside manipulation take control over the process by external forces. Inside process manipulation is becoming a part of the process. This process manipulation is called advanced process manipulation (APM). Possibility of process manipulation may substantially enhance the process effectiveness. In this paper methods of advanced process manipulation are presented. An incremental manipulation process will be defined as a sequence of basic operations. Process manipulation generally requires custom-built system capable of performing of manipulation procedures. The progress in manipulation techniques can extend the application of the manipulated system. We have developed a simulation based system which was successfully implemented for designing of APM systems and control process in ways that are not conventionally possible. The developed system was applied on magnesia sintering process in shaft and rotary furnaces.

Surrogate Modelling of Processes for Granular Material Thermal Treatment

Abstract Present advanced technologies creates increasingly complex engineering systems and the complexity of their engineering analysis advance at the same rate. In addition, the design and operation of complex engineering systems involves the integration of multiple disciplines and the resolution of conflicting objectives. Traditional parametric approach is inadequate to analyze these large-scale systems because of its computational inefficiency. Approximation techniques may be applied to build computationally inexpensive surrogate models for large-scale systems to replace expensive-to-run computer analysis codes. Numbers of approaches are existing. Response surface models are frequently utilized to construct surrogate approximations; however, they may be inefficient for systems having with a large number of variables. An alternative approach based on conceptual modelling for creating surrogate models is presented. A unified model for thermal processes is developed to compute thermal treatment of granular materials. The model does not require measurements but they can be useful for the model adjustment on specific situations or on its validation. A Databased modelling approach is used in order to keep at a minimum all the a priori assumptions on the physical mechanism driving the process formations. The motivation is to reduce computational expanse associated with use of simulation models needed to find good solutions. The model has been applied to replace of computationally expensive computer analyses.

BLAST FURNACE KNOWLEDGE-BASED CONTROL BY MEANS OF SIMULATION

Abstract In this paper is presented an approach of blast furnace knowledge-based control supported by mathematical models. The developed mathematical models are used for state observation, static simulation, and dynamic simulation. Fuzzy knowledge approach was used for the decision. Both the models and knowledge base are simultaneously used in the control system synthesis. The control alternatives are determined by means of knowledge base and can be tested by the model.

Sintering Process Control

Abstract Sinter is basic metallic charging material for most blast furnaces. Sintering process reengineering can significantly influence sinter mechanical and metallurgical properties. This paper presents improvements of the sintering process and process optimal control.

Simulation of Predictive Control Algorithm for Rotary Furnace Producing Magnesite Sinter

This paper deals with a proposal of predictive control system for the magnesite thermal treatment in rotary furnace. The mathematical model based on the initial principles and elementary balances method providing a comprehensive view of the rotary furnace work was calibrated based on the measured operating data. This model was used as the data model for the development of the approximation model in the form of an artificial neural network after identifying the critical points of the production process of sintered magnesia production. The paper represents the process of the approximation model development and the principle of the seeking of the optimal values of the specified control variables in order to ensure the required quality throughout the whole period of the rotary furnace operation.

MICROFLUID APPARATUS FOR FINE GRANULAR MATERIALS THERMAL TREATMENT

Innovation is the application of new knowledge and its materialization. Thus it ensures the companys ability to cope with changes in the business environment and the ability to survive in the global competitive environment. As a result, innovation saves natural resources, provides safe and more efficient transport and production. Innovations change the style of work life, place emphasis on the importance of education, creativity, communication and collaboration. However, innovations are associated with a number of problems. They require high costs of the research and development and they face the risks during implementation. This paper describes specific experience with the application of principles and tools of logistics, project management and mainly the application of management system created for the streamlining not only the process of preparation and implementation of the specific innovation project, but also for the streamlining the operation of research and development workplace which implement innovative projects.

INNOVATIVE TRENDS IN RAW MATERIALS HEAT TREATMENT

Innovation is the application of new knowledge and its materialization. Thus it ensures the companys ability to cope with changes in the business environment and the ability to survive in the global competitive environment. As a result, innovation saves natural resources, provides safe and more efficient transport and production. Innovations change the style of work life, place emphasis on the importance of education, creativity, communication and collaboration. However, innovations are associated with a number of problems. They require high costs of the research and development and they face the risks during implementation. This paper describes specific experience with the application of principles and tools of logistics, project management and mainly the application of management system created for the streamlining not only the process of preparation and implementation of the specific innovation project, but also for the streamlining the operation of research and development workplace which implement innovative projects.