The processing of mined and beneficiated ores, concentrates or mattes to produce refined metallic products is an important step in the production of base metals such as zinc, copper and nickel. Despite increased recycling, as well as first tentative steps towards dematerialization of economic activity in industrialized countries, prospects are positive for continued growth in demand for these c...

It is the purpose of this research to study electrostatic charging mechanisms related to electrostatic beneficiation of coal with the goal of improving models of separation and the design of electrostatic separators. Areas addressed in this technical progress report are (a) electrostatic beneficiation of Pittsburgh #8 coal powders as a function of grind size and processing atmosphere; (b) the u...

Weathering of rocks generated large volumes of kaolin clays, quartz sands and micas, as well as other minerals, especially iron and titanium oxides. Kaolin is an economically important raw material often used in wide variety of ceramic applications, from high quality tableware and sanitaryware to electrical porcelain, tiles and glasses. There are some less common uses including glass fibre, whi...

Dielectrophoresis is a method of rapid response with sufficient selectivity for manipulation and separation of bioparticles, such as: microorganisms and biomolecules. Due to the great importance of proteins in the biotechnological and pharmaceutical processes, the present study demonstrates the potential of the insulator-based dielectrophoresis (iDEP) and DC electric fields to manipulate and co...

The roasting of sulphide ores and concentrates is often the first step in the production of metals or chemicals. In many processes, the production of sulphuric acid is viewed as a by-product, while in some plants production is an important economic factor. Regardless of the purpose, a pyrite roasting plant consists of mainly three plant sections: roasting, gas cleaning and sulphuric acid. With ...

Introduction: Trigeminal neuralgia (TN) is defined as sudden, usually unilateral, severe and brief pain episodes within the distribution of one or more branches of the trigeminal nerve. In some patients a constant background pain may persist, additionally to pain attacks, which can make difficult to differentiate the trigeminal neuralgia from other orofacial pain types. Objective: To review the...

Phosphate rock (PR) is a finite mineral indispensable for fertilizer production, while P (phosphorus) is a major pollutant if applied or discharged in excess, causing widespread eutrophication (Carpenter and Bennet, 2011). High-grade PR is obtained from deposits which took millions of years to form and which are gradually being depleted. Recently, global PR reserves as reported by the US Geolog...

Background: Psoriasis is a common skin disease which beneficiated lately from many new drugs, acting on immunity. Phototherapy remains however a cornerstone of treatment in moderate-to-severe forms. Patients exhibit a continuous and longstanding interest in Dead Sea Climatotherapy (DSC), a well-known off-label psoriasis treatment which demonstrated high rates of success since decades. Objective...