Technological procedure of extracting metals is being constantly modernised so that polluting of the basic life resources is reduced. Emissions of waste gases and particulate matter are still present in larger mining-metallurgical complexes. Mining-metallurgical complex Bor (RTB) exploits sulphide copper ores, thus emitting acid sulphur gases and suspended particles with high content of Cu, Zn,...

Obtaining temperature distribution data of slabs under rolling is essential as the mechanical and metallurgical properties of the metal under this process vary with temperature. Using the control volume method, a mathematical model is employed in this study to predict slab temperature in the hot roll process at Mobarakeh Steel Company. The effects of different parameters including the heat resu...

To attempt to optimize the anomalous phenomena that today go under the label "cold fusion" the experimentalist should be aware of the many aspects of the behavior of hydrogen in metals and of its entry into and egress from metals. This paper discusses the equilibrium characteristics of the isotopes of hydrogen in metals. The first section discusses the thermodynamics of the terminal solutions o...

Metallurgical accounting in the mineral processing industry transforms accumulated process data, including flow rates and assays, into a coherent information format. This is used to rapidly provide production reporting and key performance indications. Comprehensive and coherent data must be a component of any system expected to accomplish reconciliation in the mass-balancing process. Quality is...

Metallurgical activities have been undertaken in northern South America (NSA) for millennia. However, it is still unknown how far atmospheric emissions from these activities have been transported. Since the timing of metallurgical activities is currently estimated from scarce archaeological discoveries, the availability of reliable and continuous records to refine the timing of past metal depos...

the effect of metallurgical parameters influencing the susceptibility of the steel grades, used for gas and oil pipe, to hydrogen induced cracking and sulfide stress corrosion cracking has been studied. the study of the recent investigations suggests that the shape and the nature of inclusions, microstructures, sulfur content and desulfurization as well as the nature of alloying elements in ste...

Enlargement of quality requirements in metallurgical semi products used in cannon barrels production (forgings) has resulted in substantially increased number of defective products. The main issues are poor quality of plastic properties and yield point of processed materials. Careful analysis of forgings technology and adaptation of its constituent phases has not resulted in the quality enhance...

1DDS, MS, PhD student of the Metallurgical and Materials Engineering Department of the Federal University of Rio de Janeiro Rio de Janeiro, RJ, Brazil. 2DDS, MS, PhD Associate Professor of the Biological Science Department, Bauru Dental School, University of Sao Paulo, SP, Brazil. 3Eng, MS, PhD, Associate Professor of the Metallurgical and Materials Engineering Department of the Federal Univers...

A fractured nutcracker was examined for determining the root cause/s for premature fracture/failure. This is one of the common tools used typically for cracking hard nuts. In this study, metallurgical failure analysis techniques namely, visual inspection, optical microscopy, SEM, and hardness tests were used in investigating the broken product. From the metallurgical analysis, it was determined...