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Lithium, the alkaline metal, causes a great excitement in scientific as well as in media scene. His lithic mineral zinnwaldite attracts great attention to a deposit in CпїЅnovec in Ore Mountains. A lithic locality can be found in the Northern Bohemia and it is well-known due to its sources of ore raw material for years. Tin, silver and wolfram were extracted here. Lithium was not utilized in the past and that is why it sometimes happened that a greater part containing lithium was not used. However, this was change...

Deposits located in the region from Ostrov up to Chodov are mainly known for their high quality deposits of kaolin non-metalliferous raw materials. Among others, the deposits contain a large amount of micas that are not used within production of kaolin concentrates. Within their structure, these micas can contain metals of alkaline soil - lithium, rubidium or cesium in particular. Due to new technologies, these metals get the greatest focus and their sources are being looked for all around the world. In the first ...

The aim of this article is to assess the impact of changes in particle size on the production yield during thermal degradation пїЅ pyrolysis process. For the purpose of this research the energy grass пїЅ black bent grass (Agrostis gigantea) was selected. The input material has been tested in four different granulometric fractions пїЅ original unadjusted material, crushed material, and also in the form of two kinds of pellets of different size. For pellets, the basic mechanical properties were determined пїЅ mechan...