Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Boldiárová Eva"'
Publikováno v:
Acta Montanistica Slovaca, Vol 8, Iss 2-3, Pp 128-133 (2003)
The refractory character of complex ores and concentrates is at present one of the main problems of their metallurgical processing. The research activity in this sphere is aimed at the methods of improving the process of metal extraction from the sul
Externí odkaz:
https://doaj.org/article/8d7121580fbe4fe48af10fb35a683a8a
Publikováno v:
Acta Montanistica Slovaca, Vol 7, Iss 1, Pp 50-54 (2002)
In this paper, the application of fractal theory in the characterization of fragmented surfaces, as well as the mass-size distributions are discussed. The investigated mineral-chalcopyrite of Slovak provenience is characterised after particle size re
Externí odkaz:
https://doaj.org/article/45cf55a7ec544569a8c37f2ddfe45c42
Publikováno v:
Acta Montanistica Slovaca, Vol 7, Iss 1, Pp 19-22 (2002)
The possibility of microwaves utilisation in drying processes of different materials (e.g. wood, textiles, coffee, paper), treating of synthetics, glass and ceramic materials, vulcanisation of gum, melting of ferrous and non-ferrous ores, intensifica
Externí odkaz:
https://doaj.org/article/4b3f7c013d2943a0b000dab358751987
Publikováno v:
Acta Montanistica Slovaca, Vol 7, Iss 1, Pp 44-49 (2002)
The possibility of the application of mechanochemistry in the extractive metallurgy and the nanocrystalline materials preparation is studied. The aim of the experiments is the chloride leaching of a complex sulphidic CuPbZn concentrate (Hodrua-Hámre
Externí odkaz:
https://doaj.org/article/8e103dfde66544eab1c5312f70194481
Publikováno v:
Acta Montanistica Slovaca, Vol 3, Iss 3, Pp 363-367 (1998)
With the aim to produce a low-sulphur coal by the nitric acid pretreatment, a research was undertaken on the influence of the different process parameters, such as temperature, time, acid concentration, particle size and physical pretreatment on the
Externí odkaz:
https://doaj.org/article/b665889e04884ca98331634044e1c2ef
Publikováno v:
Acta Montanistica Slovaca, Vol 5, Iss 3, Pp 286-288 (2000)
The results of study of the quantitative changes in the deposits of energy fly-ashes of various period of in situ deposition (0,5,10,20 years) and laboratory model study of the influence of contamination of fly-ash using selected species of autochton
Externí odkaz:
https://doaj.org/article/e8c57790e4594ab4b8daadedde3e7152
Publikováno v:
Acta Montanistica Slovaca, Vol 3, Iss 3, Pp 356-358 (1998)
The aim of this paper is to point up to the characterization of the brown coal using the fractal theory. On the base of BET measurements on the adsorption surface, the surface fractal dimension of crushed and milled coal samples have been determined.
Externí odkaz:
https://doaj.org/article/90953893abb244c59e89e9cc83bf38dc