Výzkum vlastností vápenců z činných vápencových lomů pro výrobu plniv.

Abstract

The main objective of this dissertation was the research and evaluation of the raw material base of carbonate and cement raw materials in the Czech Republic and the assessment of the deposit potential of limestone raw material from the point of view of its use for the production of fillers in terms of the chemical and technological quality and the whiteness of raw materials from active limestone quarries as well as from prospective unworked deposit objects in the Czech Republic. A number of partial targets have been set forth and met to address and meet the main objective. The introduction describes the history of use and the importance of limestones for human society. Further on the general characterisation of the limestone as a rock is discussed that is focused on its mineralogical and chemical composition, its origin and its categorisation. Also described is the qualitative classification of the limestone as a mineral into raw material types that are based on the National Balance of the Reserves of Exclusive Mineral Deposits of the Czech Republic. The thesis deals not only with the industrial use but also with wider use and with new trends in the use of this raw material in connection with its chemical composition and its technological characteristics. In detail, the thesis also deals with the production and the use of fillers with a focus on limestone mineral fillers and requirements for their properties. The geological history and the development of the Bohemian Massif are also briefly presented, taking into account the occurrence of the carbonate rocks in this territory. The descriptive analysis summarises and describes the state and the development of the mining and the limestone reserves in the Czech Republic during the last twenty-seven years (i.e. 1988-2016). An estimate of the lifetime of the individual raw material reserves was also carried out in several possible variants with the determination of the minimum and maximum lifetime of the reserves. The following deposits were selected for detailed technological research: Koněprusy, Štramberk, Velké Hydčice-Hejná, Skoupý, Velká Morava and Nezdice in Šumava, which were subjected to geological documentation with a collection of samples that were subsequently subjected to the determination of their chemical and whiteness parameters. Last but not least, the basic conditions that govern the legal framework for limestone mining are outlined in the work, including the legislative process for obtaining mining permit that is described in the thesis. In connection with this, selected unworked deposits were evaluated in relation to the permitting process in order to commence the extraction.