Scientists and technologists in world over are making large efforts to streamline the conventional technological schemes of ore processing, in particular froth flotation towards reducing overall costs, limiting the use of dangerous substances, decreasing waste streams and improving waste disposal. Hitherto, search for such innovations has been performed mainly empirically and there is an urgent...

Motivated by the construction of new examples of Artin-Schelter regular algebras of global dimension four, J.J.Zhang and J.Zhang (2008) introduced an algebra extension AP [y1, y2;σ, δ, τ ] of A, which they called a double Ore extension. This construction seems to be similar to that of a two-step iterated Ore extension over A. The aim of this paper is to describe those double Ore extensions whic...

The Montevive celestine mineral deposit, set in the Granada Basin a marine evaporitic uppermost Tortonian–lowermost Messinian sequence, is largest reserve Europe of this economically important strontium ore. Currently, mine has large amount tailings resulting from rejection manual dry screening high-grade mineral. This visual and density was carried out early days mining (1954–1973). Concentrat...

According to the publication by US Minerals Survey in 1999, the total reserve of manganese ore in the world is 0.66 billion tons. See Table 1. Table 1 World Manganese ore reserve(Mn metal weight, million tons) __________________________________________ Name of counties Reserve in 1999 __________________________________________ South Africa 370 Ukraine 135 China 40 India 34 Australia 26 Gabon 20...

The increase in demand for rare earth metals and the depletion of natural resources inevitably causes need to search alternative unconventional sources metal raw materials. article presents results a study composition properties beneficiation tailings currently produced loparite ores. Sieve, mineralogical, chemical, radionuclide analyses were carried out. average content was determined. Using s...