Brown Coal Bulletin, 2021 (vol. 61), issue 2
Predictability in maintenance and technical diagnostics - an independent view of the issue
doc. Ing. František Helebrant, CSc., Ing. Vlastimil Moni, Ph.D.
Zpravodaj Hnědé uhlí 2021, 61(2)
The content of this article is to make an independent comprehensive view of the issue of predictability in maintenance. The article summarizes the most important terms related to the subject matter, such as maintenance systems, basic key maintenance tools and their logical interconnection. Furthermore, the most important parts of the applicable legislation relating to the maintenance and safety of technical systems, occupational safety and technical risk management are mentioned.
Operational deployment of the BRUS unmanned system at the ČSA surface quarry
Ing. Vlastimil Moni, Ph.D., Ing. Roman Bauer, doc. Ing. Dana Vrublová, Ph.D.
Zpravodaj Hnědé uhlí 2021, 61(2)
As part of the recent trend, even in the mining of brown coal, specific methods of surface mining of brown coal and overburden, their transport, storage and warehousing are compared and economically evaluated. In this context, considerable emphasis is placed on mining companies not only on reducing the environmental impact of mining, but also on the overall efficiency of mining operations, the balance of which can be improved by increasing the operational reliability of individual components of technological units and reducing operating costs. The aim of this article is to briefly introduce the reader to the involvement of state-of-the-art systems...
Deep-mined quartz raw materials used in the TechniStone® technological process
Ing. Jiří Ludvík, Ing. Petra Dušková, Ing. Petr Pauliš
Zpravodaj Hnědé uhlí 2021, 61(2)
Technistone, a.s. processes mineral raw materials based on silica and various silicates for its production of hardened stone in Hradec Králové. A significant part of these quartz raw materials is mined in a deep way by Minerali Industriali. As part of the project in the TRIO research and development support program of the Ministry of Industry and Trade, project number: FV30114, the use of a new white silica raw material, mined in Scotland but finally modified for processing in Technistone by the domestic company Czech Silicat, was designed and verified. Another European quartz deposit deep-mined in Sondalo, Italy, is also described here.
Mineralogy of the Smolné Pece locality with a focus on the occurrence of cordierite and its pseudomorphosis
RNDr. Michal Řehoř, Ph.D.
Zpravodaj Hnědé uhlí 2021, 61(2)
The Ore Mountains area is not rich in pegmatites with more interesting mineralogy. One of the few exceptions is the pegmatite body south of Smolné Pec village near Nejdek. In the past, feldspar and quartz were mined here, as a raw material for porcelain production. The article focuses on a brief description of the site and its mineralization. The main attention is paid to the exceptional discovery of cordierite in the region. The article follows up on more extensive research into the occurrence of cordierite and its pseudomorphosis, which took place in the Czech Republic in 2020.