691.MINERAL PROCESSING OF THE DOLOMITES FROM DEPOSITS IN THE REPUBLIC OF NORTH MACEDONIA

Abstract

Dolomites are used as a raw material in various industries such as construction, inorganic chemical technology, metallurgy, agriculture, etc. In the Northwestern Region of the Republic of North Macedonia, there are several deposits of dolomite that are exploited. In this research, the dolomites from the localities of Čajle, Ogledalec and Suvodol were examined. The aim of thе research is to define the mineral processing of the dolomite raw materials. The basic parameters of the grain size reduction were optimized, with a comparison between the deposits. Therefore, the dolomite raw materials were processed on a jaw crusher, a roller crusher and in a porcelain mill with balls. A wet sieve analysis was conducted to define the efficiency of size reduction. Various size fractions of grains were observed on a binocular microscope. The discussion of the obtained results defines the relation between material pressure strength and the efficiency of the grain size reduction process, as well as the electricity consumption.