Brown Coal Bulletin, 2019 (vol. 59), issue 3
Continual dust monitoring in the coal reservoirs
Ing. David Hirman, Ing. Marek Herčzík, Ph.D., Jaromír Matějů
Zpravodaj Hnědé uhlí 2019, 59(3)
Continuous dust meters are used to monitor the development of dust in the internal areas of the coal reservoirs. The purpose is to monitor dust content in terms of high dust levels approaching the lower explosion limit values (LEL). This monitoring enables early detection of dangerous conditions disturbing the safe operation. The main goal is to provide sufficient time to take precautionary measures. The article provides a brief description of the theory of explosion, the nature of explosiveness of flammable dusts, factors influencing the explosiveness of combustible dust, conditions of occurrence of coal dust on finishing and crushing plants. At the...
Thermal processing of secondary agricultural products usable as a components of biofuels
Ing. Lukáš Anděl, doc. Ing. Karel Ciahotný, CSc., Ing. Veronika Kyselová, Ph.D., Jaroslav Kusý, RNDr. Ing. Josef Valeš
Zpravodaj Hnědé uhlí 2019, 59(3)
The article deals with the production of liquid fuels from renewable sources, rich in hydrocarbons, such as by-products from agricultural production, from the current production of bio-components of liquid fuels, from digestate of biogas stations, from sewage sludge and compares their yields with the products of thermal treatment of coal.
Results achieved in the project of the research programme of the Ministry of Agriculture of the Czech Republic in 2015-2018
RNDr. Michal Řehoř, Ph.D., Ing. Pavel Schmidt
Zpravodaj Hnědé uhlí 2019, 59(3)
The Ministry of Agriculture of the Czech Republic announced the extensive research programme NAZV-KUS in 2012. One of the subprograms was devoted to the problems of the areas of the Czech Republic with anthropogenic damage. The Brown Coal Research Institute took part in this programme as the main coordinator of the large research project in 2015-2018. The article briefly summarises final results of the part of the project dedicated to the restoration solved by the Brown Coal Research Insti-tute j.s.c. (VúHU a.s.). The first part of this article describes general characteristics of the project and its timing. The main part of the article is dedicated...
Complex information of outer dump sites - locality Obránců míru
Ing. Evžen Pichler, CSc., Ing. Martina Kunešová, RNDr. Jan Burda, Ph.D.
Zpravodaj Hnědé uhlí 2019, 59(3)
The article summarises available knowledge about the Obránců míru dump, especially on the development of hydrological and hydrogeological conditions of the dump and its bottom and then information about the implemented rehabilitation actions. The entire article is divided into sections that contain a description of the original state before the dump establishing, mining history of the landscape, the characteristics of the material, forming a dump and procedures used to its creation. Furthermore, the development of the hydro-geological conditions of the dump body and its bottom part, and also a description of the current state of the recovery and reclamation...