This paper presents the investigations of possibility of calcite hydrophobisation. Two samples of calcite of different size classes from the site 'Dobar kamen', Arandjelovac, Serbia, were used in the experimental work. Modifying the surface of calcite was carried out by stearic acid with 'dry' method. Concentrations of stearic acid in the modifying method were as follows: 0.3, 0.5, 0.8, 0.9, 1, 2, 2.5, 3 and 4%. The results showed that a complete hydrophobicity (I0=99.9%) of calcite sample with the medium diameter (d50) 10.87 μm was achieved at concentration of stearic acid of 0.8%, while for the sample with the mean grain diameter (d50) of 29.14 μm, it was achieved at concentration of stearic acid of 3%. These results were confirmed by the microscopic analysis.
Keywords:
stearic acid / grain-size distribution / degree of coating / calcite
Source:
Mining and Metallurgy Engineering Bor, 2016, 2, 31-40
TY - JOUR
AU - Mihajlović, Slavica
AU - Sekulić, Živko
AU - Radulović, Dragan
AU - Jovanović, Vladimir
PY - 2016
UR - https://ritnms.itnms.ac.rs/handle/123456789/384
AB - This paper presents the investigations of possibility of calcite hydrophobisation. Two samples of calcite of different size classes from the site 'Dobar kamen', Arandjelovac, Serbia, were used in the experimental work. Modifying the surface of calcite was carried out by stearic acid with 'dry' method. Concentrations of stearic acid in the modifying method were as follows: 0.3, 0.5, 0.8, 0.9, 1, 2, 2.5, 3 and 4%. The results showed that a complete hydrophobicity (I0=99.9%) of calcite sample with the medium diameter (d50) 10.87 μm was achieved at concentration of stearic acid of 0.8%, while for the sample with the mean grain diameter (d50) of 29.14 μm, it was achieved at concentration of stearic acid of 3%. These results were confirmed by the microscopic analysis.
PB - Institut za rudarstvo i metalurgiju, Bor
T2 - Mining and Metallurgy Engineering Bor
T1 - Investigation the calcite hydrophobisation of different grain sizes
EP - 40
IS - 2
SP - 31
DO - 10.5937/MMEB1602031M
UR - conv_423
ER -
@article{
author = "Mihajlović, Slavica and Sekulić, Živko and Radulović, Dragan and Jovanović, Vladimir",
year = "2016",
abstract = "This paper presents the investigations of possibility of calcite hydrophobisation. Two samples of calcite of different size classes from the site 'Dobar kamen', Arandjelovac, Serbia, were used in the experimental work. Modifying the surface of calcite was carried out by stearic acid with 'dry' method. Concentrations of stearic acid in the modifying method were as follows: 0.3, 0.5, 0.8, 0.9, 1, 2, 2.5, 3 and 4%. The results showed that a complete hydrophobicity (I0=99.9%) of calcite sample with the medium diameter (d50) 10.87 μm was achieved at concentration of stearic acid of 0.8%, while for the sample with the mean grain diameter (d50) of 29.14 μm, it was achieved at concentration of stearic acid of 3%. These results were confirmed by the microscopic analysis.",
publisher = "Institut za rudarstvo i metalurgiju, Bor",
journal = "Mining and Metallurgy Engineering Bor",
title = "Investigation the calcite hydrophobisation of different grain sizes",
pages = "40-31",
number = "2",
doi = "10.5937/MMEB1602031M",
url = "conv_423"
}
Mihajlović, S., Sekulić, Ž., Radulović, D.,& Jovanović, V.. (2016). Investigation the calcite hydrophobisation of different grain sizes. in Mining and Metallurgy Engineering Bor
Institut za rudarstvo i metalurgiju, Bor.(2), 31-40.
https://doi.org/10.5937/MMEB1602031M
conv_423
Mihajlović S, Sekulić Ž, Radulović D, Jovanović V. Investigation the calcite hydrophobisation of different grain sizes. in Mining and Metallurgy Engineering Bor. 2016;(2):31-40.
doi:10.5937/MMEB1602031M
conv_423 .
Mihajlović, Slavica, Sekulić, Živko, Radulović, Dragan, Jovanović, Vladimir, "Investigation the calcite hydrophobisation of different grain sizes" in Mining and Metallurgy Engineering Bor, no. 2 (2016):31-40,
https://doi.org/10.5937/MMEB1602031M .,
conv_423 .
