PRELIMINARY ANALYSES OF CENTRAL BOSNIA’S DOLOMITE DEPOSITS FOR HIGH-PURITY MAGNESIUM PRODUCTION
This project investigated the potential of using dolomite from Central Bosnia as a raw material for high-purity metallic magnesium production. Extensive sampling and mineralogical analyses revealed the suitability of these deposits, particularly for methods like the Pidgeon Process. Preliminary results underscored the strategic value of Bosnia&rsqu...
By Ahmet Turan, Gurur Unan, Mustafa Tekin, H. Kubra Akben, Taner Akbay, Amir Muslić, Almaida Gigovic-Gekic, Adnan Mujkanovic, Hasan Avdušinović
ADSORPTION OF Cu(II) IONS BY MEANS OF FOUNDRY WASTE
This article deals with the analysis of the adsorptive properties of the waste produced during theshot blasting of castings in foundries. During this process, particles of moulding mixture andscale that remained on the surface of the casting after removal from the mould are removed. Sincethis waste contains particles of moulding mixture (SiO2, carb...
By Anita Štrkalj, Zoran Glavaš
HYDROGENATION PROCESS OF TITANIUM ALLOY FOR BIOMEDICAL PURPOSES
The production of titanium is very expensive, so it is interesting to research technologiesthat require lower costs, such as the HDH hydrogenation-dehydrogenation processtechnology, which is used for cheaper powder production from the waste material oftitanium alloys.This paper presents the hydrogenation procedure of a recycled piece of the Ti6Al7N...
By Aida Imamović, Mirsada Oruč, Šaban Žuna, Esad Hadžibulić
EFFECT OF PARTICLE SHAPE AND SIZE OF COPPER POWDERS ON THE PROPERTIES OF SINTERED PARTS
The particle shape and size of the starting powders represent the most important physicalproperties, on which the quality of the compacts and final sintered products depends. Two types ofpowder were analyzed in the paper - electrolytic copper powder with a dendritic particle shape andwater-atomized copper powder with an irregular particle shape. Th...
By Ivana Marković, Dragan Manasijević, Ljubiša Balanović, Uroš Stamenković, Milijana Mitrović, Stevan Trujić
ELECTRICAL PROPERTIES OF GRANULAR METALS
Metallic materials in granular packings show different electrical properties from their bulkcounterparts. In this paper, we investigate the temporal evolution of the electrical conductivity ofgranular metals. We use metallic beads arranged in different one-, two- and three-dimensionalensembles through which different constant currents are injected....
By Maja Đekić, Ajla Karić, Amra Salčinović-Fetić, Melisa Baždar, Belma Husković, Dijana Dujak, Diana Ćubela
INVESTIGATION OF CUTTING CONDITIONS INFLUENCE ON SURFACE ROUGHNESS DURING MQL MACHINING OF STEEL
In the paper, the influence of the cutting conditions (cutting speed, feed, and depth of cut) duringthe machining of the cylindrical steel part on the surface roughness (average surface roughness-Ra) is analysed using experimental investigation. The material used in the full factorialexperimental investigation was C45 steel, a diameter of 50 mm, ma...
By Tarik Gazić, Sabahudin Ekinovic, Edin Begović, Ibrahim Plančić
SOME ASPECTS OF A METALLURGY CONSULTING IN THE INDUSTRIAL TRANSITION OF B&H
Some specific aspects of metallurgy consulting in the industrial transition of Bosnia andHerzegovina are presented in this paper. The theoretical part of the paper is mostly concerned witha short overview of ZELJEZARA ZENICA cum ARCELORMITTAL-ZENICA (AMZ) product-mixand the facilities transition, as an example of the a.m. transition, although these...
By Faik Uzunović
RUTIN ANALYSIS BY HIGH-RESOLUTION LIQUID CHROMATOGRAPHY ON REVERSE PHASES IN RASPBERRY FLOWER EXTRACT (Rubus idaeus L.)
Rutin belongs to the group of polyphenolic compounds, which consists of hormones, vitamins, andantioxidants in food. It is found mostly in plants and is one of the most biologically activeflavonoids. It can act as an antioxidant, antibacterial, and anti-inflammatory and can prevent theformation of a tumor. The concentrationof rutin was determined i...
By Dejana Kasapović, Farzet Bikić
CHARACTERISTICS OF VACUUM DISTILLATION FRACTIONS DEPENDING ON THE CHARACTERISTICS OF THE INPUT HYDROCRACKED BASE OIL RAW MATERIAL OF THE MODRIČA OIL REFINERY
Hydrocracked base oil raw material (BORM) is the basis for the production of hydrocracked baseoils (HC-base oils) in the company „Modriča Oil Refinery“, which is engaged in the production ofHC-base oils, various motor and industrial lubricating oils, and lubricating greases. Theproduction of the mentioned HC-base oils consists of four p...
By Azra Halilović, Ilhan Bušatlić, Šefkija Botonjić, Nadira Bušatlić, Edin Zolotić
THE INFLUENCE OF THE HEATING VALUE OF COALS FROM COAL MINE „GRAČANICA“ d.o.o. GORNJI VAKUF ON QUALITY OF COAL AS ENERGYSOURCE IN ENERGY PRODUCTION
Coal is the most important and widespread fuel sedimentary rock of organic origin. It is one ofthe main energy sources today and an industrial raw material for various products. Together withthe oil and other natural bitumens, it belongs to the group of fossil fuels or caustobiolite.Combustion represents one of the fundamental energy transformation...
By Azra Halilović, Šefkija Botonjić, Amila Krnjić, Lamija Sušić