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1
Content available Ground Penterating Radar Method in Surveying of Sacral Buildings and Post-military Structures
Madziarz Maciej, Szyszka Danuta
Civil and Environmental Engineering Reports
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2025
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Vol. 35, no. 2
78--90
EN
The article presents selected examples of use of the ground penetrating radar method in surveying sacral buildings and post-military structures. This surveying method and its use are synthetically characterized. The GPR equipment, research methodics and results are described for the performed search of an unknown crypt in the catacombs of the church of Our Lady of Candlemas in Kożuchów and the historical escape tunnel from the Second World War in the area of the Stalag Luft III Allied Prisoner-of-war Camp: The Site of the 1944 “Great Escape”, Zagan (Ger.-Sagan).
2
Content available Flotation of hydrophobic minerals in hallimond tube
Błaszków Aleksandra, Ratajczak Tomasz, Szyszka Danuta
Mining Science
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2024
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Vol. 31
219--227
EN
This study analyses the effect of hydrophobicity on the floatability of sulphur, silicon, fluorite and galena. Flotation was performed in a Hallimond tube in distilled water and in the presence of a frother (α-terpineol). The results confirm that all the analysed minerals showed floatability in distilled water, with a varying yield, depending on the contact angle and density of each mineral. The introduction of a frother significantly improved the flotation efficiency, mainly for sulphur, silicon and fluorite.
3
Content available Critical coalescence concentration (CCC) of various surfactants used as flotation reagents in mineral
Szyszka Danuta
Mining Science
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2022
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Vol. 29
221--232
EN
The role of flotation frothing agents in the flotation process is generally known, especially due to the size of bubbles and the stability of the foam formed. In recent years, a number of new reagents have been introduced. The purpose of this article is to present a comprehensive database containing the characteristics of surfactant families discussed using the parameter of the so called the Critical Coalescence Concentration (CCC). This article presents an analysis of the experimental data set by the author and the experimental data published in the literature.
4
Content available Frother critical coalescence concentration and dose in flotation of copper-bearing carbonaceous shale
Szyszka Danuta
Mining Science
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2019
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Vol. 26
289--295
EN
The paper presents the yield of carbon-and-cooper-bearing shale from the Legnica and Glogow Copper Basin flotation also called Kupferschiefer in the presence of ethylene, diethylene and trithylene glycol butyl ethers (C4E1, C4E2, C4E3) frothers characterized by frother normalized concentration that is ratio of the frother concentration, and its critical coalescence concentration expressed in different units. It was found that the oucome of flotation is identical provided that the frother concentration is expressed in milimoles per Mg.
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