Hydrophobization of limestone from the deposit 'Cancar' Aranđelovac using stearic acid

Tehnika. 2015;70(6):943-946 DOI 10.5937/tehnika1506943M

 

Journal Homepage

Journal Title: Tehnika

ISSN: 0040-2176 (Print); 2560-3086 (Online)

Publisher: Savez inženjera i tehničara Srbije

LCC Subject Category: Technology: Engineering (General). Civil engineering (General)

Country of publisher: Serbia

Language of fulltext: Serbian, English

Full-text formats available: PDF

 

AUTHORS


Mihajlović Slavica R. (Institute of Technology of Nuclear and Other Mineral Raw Materials - ITNMS, Belgrade, Serbia)

Sekulić Živko T. (Institute of Technology of Nuclear and Other Mineral Raw Materials - ITNMS, Belgrade, Serbia)

Radulović Dragan S. (Institute of Technology of Nuclear and Other Mineral Raw Materials - ITNMS, Belgrade, Serbia)

Stevanović Dejan R. (Institute of Technology of Nuclear and Other Mineral Raw Materials - ITNMS, Belgrade, Serbia)

Kašić Vladan D. (Institute of Technology of Nuclear and Other Mineral Raw Materials - ITNMS, Belgrade, Serbia)

EDITORIAL INFORMATION

Blind peer review

Editorial Board

Instructions for authors

Time From Submission to Publication: 4 weeks

 

Abstract | Full Text

The paper presents the results of investigation of the possibility of hydrophobization of calcite from deposit 'Cancar' company 'Good stone' - Aranđelovac, Serbia. Hydrophobization of calcite surface is performed with stearic acid, and the sample which is used is a product made from the 'Good stone' mean grain diameter 29,14μm. The concentration of stearic acid in the experiment, were as follows: 0.3; 0.5; 0.8; 0.9, 1; 2, 2.5, 3 and 4%. Results showed that the hydrophobization degree of coating increases with increasing concentration of the stearic acid used for modifying. This indicates that was not changed orientation of the hydrocarbon chains in the adsorbed layer with increasing concentrations of stearic acid available for adsorption. Adsorption was always such that the molecules of stearic acid kept the orientation of its hydrophobic portion (the hydrocarbon chains) opposite to surface of the calcite. As the degree of coating can be taken as a measure of hydrophobicity of the obtained products, results suggest that complete hydrophobicity of the surface of calcite occurs at a concentration of 3%.