A fourth century BCE silver jewellery collection, which is part of two hoards of Samarian coins (the Samaria and Nablus Hoards), was studied by non-destructive analyses. The collection, which consists of pendants, rings, beads and earrings, had been examined by visual testing, multi-focal microscopy and SEM-EDS analysis. In order to enhance our knowledge of past technologies of silver jewellery...

Copper ore is a non-renewable resource with lower grades, which means that the extraction of more rock material required to produce same amount copper, implying greater consumption materials, reagents, water, and energy. Since there copper sulfide present in nature, concentration using bubble flotation method will generate number tailings. This article discusses environmental issues resulting f...

An Aramaic-inscribed object made of copper-alloy was discovered in 1993 the south-western part Tulûl Mas‘ud (Moshav Elyakhin) and has recently been studied using an archaeometallurgical approach. Based on visual testing multifocal light microscopy observation, probably produced a nearby workshop, with inscription engraved sharp tool during production process. Given larger assemblage inscribed a...

Objective: this research investigates the concentration of heavy metal (Pb, Fe, Cu, Cd and Zn) bio accumulation in cardiac tissue samples taken from areas near oil fields brick factories. Method: Atomic absorption spectrometry analysis powdered, air-dried, acid-digested materials to determine lead, cadmium, zinc, iron, copper concentrations. Results: The result showed that Zn were within normal...

the estimation of metallurgical parameters of flotation process from froth visual features is the ultimate goal of a machine vision based control system. in this study, a batch flotation system was operated under different process conditions and metallurgical parameters and froth image data were determined simultaneously. algorithms have been developed for measuring textural and physical froth ...

Recovery of gold and other valuable metals from electronic scrap involves a complex metallurgical flow sheet and requires state-of-the-art recovery technologies that are available in large-scale, integrated smelter and refinery operations. At the end of their use, electronic and other electrical product scrap offer an important recycling potential for the secondary supply of gold and silver...