Browsing by Author "Hicyilmaz, C"
Now showing items 1-15 of 15
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Adsorption of dithiophosphate and dithiophosphinate on chalcopyrite
Guler, T; Hicyilmaz, C; Gokagac, G; Ekmeci, Z (PERGAMON-ELSEVIER SCIENCE LTD, 2006)Electrochemical behavior of chalcopyrite was investigated in the absence and presence of dithiophosphate (DTP) and dithiophosphinate (DTPI), selective thiols against Fe-sulfides in the flotation of sulfide ores, in ... -
Determination of the shape, morphological and wettability properties of quartz and their correlations
Ulusoy, U; Yekeler, M; Hicyilmaz, C (PERGAMON-ELSEVIER SCIENCE LTD, 2003)The distributions of particle sizes and shapes are of great importance to industries employing various materials in powdered form. These include many of the raw materials in civil and chemical engineering, pharmaceutical, ... -
Effect of particle shape and roughness of talc mineral ground by different mills on the wettability and floatability
Yekeler, M; Ulusoy, U; Hicyilmaz, C (ELSEVIER SCIENCE SA, 2004)In this study, shape characteristics of talc particles produced by ball, rod and autogenous mills were investigated using Scanning Electron Microscope (SEM) and expressed by the shape descriptors such as elongation, flatness, ... -
Effects of the shape properties of talc and quartz particles on the wettability based separation processes
Hicyilmaz, C; Ulusoy, U; Yekeler, M (ELSEVIER SCIENCE BV, 2004)Shape properties of talc and quartz particles ground by a laboratory size ball, rod, and autogenous mills were studied using scanning electron microscope (SEM). More than 100 particles were measured to do the shape analysis ... -
The effects of various surface-active agents on the breakage of calcite in a laboratory porcelain mill
Ozkan, A; Yekeler, M (A A BALKEMA PUBLISHERS, 2000)A study has been made of grinding of calcite in a laboratory size porcelain mill as dry, wet and wet grinding with chemicals using standard S and B test technique. The dry, wet and wet grinding with chemicals were performed ... -
Electrochemical behaviour of chalcopyrite in the absence and presence of dithiophosphate
Guler, T; Hicyilmaz, C; Gokagac, G; Ekmekci, Z (ELSEVIER SCIENCE BV, 2005)Electrochemical behaviour of chalcopyrite was investigated in collectorless condition and in the presence of dithiophosphate (DTP), which is a selective collector for chalcopyrite, by cyclic voltammetry (CV) study. Diffuse ... -
Flotation responses to the morphological properties of particles measured with three-dimensional approach
Hicyilmaz, C; Ulusoy, U; Bilgen, S; Yekeler, M (ELSEVIER SCIENCE BV, 2005)Morphological properties of barite particles ground by autogenous and ball milling were examined by three-dimensional methods, namely, Brunauer-Emmett-Teller (BET) nitrogen adsorption and Permaran methods in terms of surface ... -
Hydrophobicity of chalcopyrite with dithiophosphate and dithiophosphinate in electrochemically controlled condition
Guler, T; Hicyilmaz, C (ELSEVIER SCIENCE BV, 2004)The degree of hydrophobicity of chalcopyrite was determined by contact angle measurements on polished chalcopyrite surface in electrochemically controlled conditions. Results have shown that the increase in solution pH ... -
Processing of Hafik-Madentepe copper slags using conventional and leaching methods
Aydogan, S; Canbazoglu, M; Akdemir, U; Gurkan, V (A A BALKEMA PUBLISHERS, 2000)In this research, it was aimed to beneficiate Hafik Madentepe slags with 2.62% Cu, which was formed during smelting operations 150-200 years ago and has a reserves of a few million tons. In the scope of the study, ... -
Role of shape properties of calcite and barite particles on apparent hydrophobicity
Ulusoy, U; Hicyilmaz, C; Yekeler, M (ELSEVIER SCIENCE SA, 2004)Shape properties of calcite and barite particles ground by ball, rod and autogenous mills were examined by using scanning electron microscope (SEM). Shape properties have been stated in terms of shape descriptors such as ... -
Role of some physical variables on gangue and water recovery in froth
Akdemir, U; Guler, T (A A BALKEMA PUBLISHERS, 2000)In this research, flotation recovery and entrainment, of fine gangue were investigated using calcite as hydrophilic and talc as hydrophobic mineral. For this purpose water, talc and calcite recoveries within froth product ... -
The role of zeta potential and hydrophobicity on shear flocculation of fine particles
Akdemir, U; Hicyilmaz, C (A A BALKEMA, 1996)… -
Selective shear flocculation of chromite from chromite-serpentine mixtures
Akdemir, U; Hicyilmaz, C (ELSEVIER SCIENCE BV, 1998)In this study, shear flocculation of chromite from mixtures of chromite and serpentine was investigated. The effects of zeta potential, contact angle, stirrer speed, flocculation (stirring) time, settling time and concentration ... -
Shear flocculation of chromite fines in sodium oleate solutions
Akdemir, U; Hicyilmaz, C (ELSEVIER SCIENCE BV, 1996)In this study, chromite fines were aggregated by stirring after the particle surfaces were made hydrophobic with sodium oleate. The effects of pH, sodium oleate concentration, stirrer speed and flocculation time were ... -
Voltammetric and drift spectroscopy investigation in dithiophosphinate-chalcopyrite system
Guler, T; Hicyilmaz, C; Gokagac, G; Ekmekci, Z (ACADEMIC PRESS INC ELSEVIER SCIENCE, 2004)The mechanism of dithiophosphinate (DTPI) adsorption on chalcopyrite was investigated by diffuse reflectance Fourier transformation (DRIFT) spectroscopy and by cyclic voltammetry (CV) at various pHs. CV experiments showed ...