Low-melting alloys, based on bismuth, indium, and tin, have found commercial use in soldering,safety devices, coatings, and bonding applications, due to their low melting point temperature ofeutectic compositions and small differences between their liquidus and solidus temperatures.Based on this, the accurate knowledge of their thermal properties s...

By Ljubiša Balanović, Dragan Manasijević, Ivana Marković, Milan Gorgijevski, Uroš Stamenković, Dajana Milkić

Austempered ductile iron is the last addition to the group of ductile irons obtained by isothermalimprovement of classic ductile iron. Austempered nodular cast iron has improved mechanicalproperties and a different matrix microstructure compared to known iron-based castings. Thistype of casting is obtained by isothermal improvement - austempering, ...

By Adisa Burić, Belma Fakić, Edib Horoz, Hasan Avdušinović, Raza Sunulahpašić

Two clays from deposits located in the region of Central Bosnia, and kaolin obtained from a localspark plug and technical ceramics factory were calcined at 800, 900, and 1000 ºC. The pozzolanicactivity of calcined raw materials was determined using the P test. Calcined clay from the depositBilalovac showed slightly better reactivity compared t...

By Marina Jovanović, Adnan Mujkanovic, Nadira Bušatlić, Nedžad Haračić, Amina Čaušević

This paper examines the possibility of producing metallurgical cement type CEM III/A 42.5N at theKakanj Cement Factory. The tested samples contain respectively 46%, 41%, and 38% of granulatedblast furnace slag and the rest is clinker. According to the test results, all cement samples meet theEN 197-1 standard in terms of physical-mechanical propert...

By Nevzet Merdić, Nedžad Haračić, Ilhan Bušatlić, Nadira Bušatlić, Adnan Mujkanovic

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

In industries such as the chemical industry, the oil industry, the steel industry, and the pulp andpaper industry, energy systems are the basis of the production process and represent keyindicators of the profitability of the process. Energy efficiency in industry is long-term related totechnological development and the dynamics of renewal of produ...

By Nusret Imamović, Armina Čamić, Haris lepić

Particulate matter enters the atmosphere as a result of human activity, as well as natural processes.Since we still cannot influence natural processes, reducing the concentration of floating particlesis possible only by adjusting human activity. The emission of solid particles occurs during a largenumber of everyday activities. Depending on the act...

By Aida Šapčanin, Aida Hasanović, Farzet Bikić

The chemical composition of casting is an important factor affecting the shape of graphite and the mechanical properties and microstructure of the metal base. Different elements have different influence to casting properties. All elements that affect the microstructure development during casting solidification have significant influence on mechanic...

By Aida Imamović, Hasan Avdušinović, Anida Henjaković

Steel 67SiCr5 is a alloyed carbon steel usually used for production of springs. It is used for load bearing springs, ring-shape springs, spiral springs, anti vibration springs etc. Springs steels are usually distribute in annealed or hardened and tempered state. Heat treating could be performed before or after springs forming. In this article, the ...

By Almaida Gigović-Gekić, Jusuf Duraković, Hasan Avdušinović

In this paper, the results of changes in pH and conductivity values of the solutions during the rinsing of the adsorbent, as well as during the adsorption of copper ions were presented. Prior to the adsorption experiments, the sunflower heads were rinsed with 200 cm3 of distilled water in ten equal portions (20 cm3 each). After each water volume pa...

By Milan Gorgievski, Nada Štrbac, Velizar Stanković, Vesna Grekulović, Miljan Marković, Dragana Božić