Brown Coal Bulletin, 2011 (vol. 51), issue 2
Pyrolysis experiments of brown coal produced in the region of North-western Bohemia
Jaroslav Kusý, Ing. Lukáš Anděl, RNDr. Ing. Josef Valeš, Ing. Marcela Šafářová, Ph.D.
Zpravodaj Hnědé uhlí 2011, 51(2)
Brown coal was sampled at each operating coal mine in the North Bohemian Brown Coal Basin in order to run several pyrolysis experiments. The experiments were made within the research project No. GA 105/09/1554 "The conversion of Czech brown coal with hydrogen rich materials like the method for production of gaseous and liquid hydrocarbons". The main objective of the work was to determine those brown coal parameters that would be convenient for co-pyrolysis with other possible substances. The main focus was put on the process of pyrolysis and on the comparison of particular pyrolysis product yields -tar, semicoke, water, and gas. The experiments included...
Pressing of fine grained materials
RNDr. Ing. Josef Valeš, Jaroslav Kusý, Ing. Lukáš Anděl
Zpravodaj Hnědé uhlí 2011, 51(2)
The paper summarizes technological findings on briquetting fine grained materials of different quality as well as their mixtures. The preparation of briquetting mixtures, their homogenization, and moistening with technological water is described. The paper presents the changes of uniaxial compressive strength according to the Czech standard CSN CEN ISO/TS17892-7 and changes of compression strength determined vertically to the diameter of the briquette using the AK-14-E tester, performed after drying, after subsequent saturation with air moisture, after thermal shock at 800 °C, and after annealing treatment at 1 000 °C performed for 45 minutes.
Externalities in the landscape affected by long-term mining operations
Mgr. Jana Polanská, Ing. Eva Lacková, doc. Ing. Barbara Stalmachová, CSc.
Zpravodaj Hnědé uhlí 2011, 51(2)
The paper deals with the basic problem of methodological procedures that evaluate the landscape affected by the extraction of raw materials. The areas that were affected by the industrial activities in the past and are not used currently are called Brownfields. These areas create the side effects called externalities from their very beginning. This paper evaluates incurred externalities. These questions are solved under the European project 1CE014P4 and SP/201097. The area of Mine Sophia was used for practical evaluation of environment and assessment of incurred externalities. The first part of this paper evaluates the affected area using so called...
Sheeve Ovo - a gigantic coal deposit in Mongolia, part I: Stratigraphy of coal deposit
Mgr. Jindřich Kynický, Ph.D., Hana Cihlářová
Zpravodaj Hnědé uhlí 2011, 51(2)
Sheeve Ovo is one of the largest coal deposits in Mongolia where the largest coal mine is operated with a designed capacity of more than 5 Mt annually. This paper brings information about the sedimentary host rock associations supported mainly by detail geological research and survey field work. The Sheeve Ovo district is situated at the edge of the north-east end of the Choir depression enclosed on metamorphic bedrock. The host syncline is more than 10 km wide and extends about 15 km across NE-SW direction. Within the basin, 3 main Precambric strata can be distinguished in accordance to their lithologic contents: (1) upper mudstone strata, (2) quartzite...
The history of mining in the region of Chodov until 1945
Petr Beran
Zpravodaj Hnědé uhlí 2011, 51(2)
The paper describes the mining and processing of iron ores, ceramic raw materials, and brown coal in the territory of the town Chodov in the Sokolov Basin. The first records of coal mining came from the end of the 18th and the beginning of the 19th century. Railway development (1870) promoted a huge expansion of mining operations. At that time, strong mining corporations came to Chodov. The Richard Mine was the major mine extracting yearly more than 100 000 tons of coal till 1926. Other minor mines were closed by 1942.
Development of technical harmonization in the Czech Republic and the European Union
Ing. Milan Badal
Zpravodaj Hnědé uhlí 2011, 51(2)
The paper deals with the development of technical harmonization under the conditions of the Czech Republic's membership of the European Union and during the implementation of changed harmonized European approaches, in particular the New Approach Directives and issued documents of the New Legislation Frame of the EU. Technical harmonization is one of the key tools of building the single market of goods. Harmonization of individual specifications of products and services eliminates technical barriers to the trade between the EU member states. The products and services meeting the required parameters can freely move within the single market, which secures...