Investigation in order to define the technological process of obtaining fillers for use in various industries on the basis of limestone “Glavatske Kuće”-Kotor

Abstract

This paper presents results of investigations of the possibility of using “Glavatske Kuće”-Kotor limestone (Montenegro) as filler in various industry branches. Micronization methods, granulometric composition, oil and water absorption and degree of whiteness were investigated, and chemical and thermal analyses (DT/TG) were performed. Physico-chemical properties of this limestone classify it among high quality carbonate raw materials with relatively high CaCO3 content of 97.68 %, as well as low MgCO3 content of 1.849 % and low silicate content (SiO2 0.24 %). Its quality satisfies requirements of standards on using of calcium carbonate as filler in industry of paints and coatings; glass industry; foundry industry; sugar industry and metallurgy. Due to the low degree of whiteness (77,85 %) “Glavatske Kuće” limestone cannot be used in pharmaceutical and cosmetics industry, paper industry. Because of increased MgO content, limestone “Glavatske kuće” cannot be used in the fertilizers industry. Due to relatively high content of heavy metals, Cu (47 ppm), Ni (50 ppm) and Cd (8 ppm), as well as biogenic elements P2O5 (0.0234 %), K2O (0,0157 %), “Glavatske Kuće” limestone cannot be used in production of cattle feed and for neutralization of acidic soils.