Obogashchenie Rud

The ability to control the properties of rocks and their massifs is a very urgent task for the creation of modern technologies for processing minerals. This topic is the subject of an article that opens the fourth issue of the journal. It presents the results of long-term studies of the influence of negative temperatures on the energy intensity of crushing rocks and coals of Yakutia deposits. These data indicate the possibility of using negative temperatures for softening rocks and developing, on this basis, energy-saving technologies for their extraction and processing.

The problem of extracting flattened free gold from heavy schlich gravity concentrates is discussed in the next article of the issue. It proposes and experimentally substantiates a significant improvement in the quality of gold gravity concentrates due to preliminary centrifugal impact crushing.

Among the articles in the section «Beneficiation processes», we note the publication in which the possibility of increasing the parameters of X-ray luminescence separation due to the directed modification of the spectral-kinetic characteristics of unrecoverable diamonds using luminophores is substantiated.

Articles of the invariably topical section «Secondary raw material processing» are devoted to the issues of recycling red mud. The technology of processing red mud with heap leaching by the formate method is presented here. Solutions for the manufacture of further marketable products and de-alkalized red mud, suitable as a raw material for iron production, are obtained by this method. A method for the direct reduction of red mud pellets with coke and the addition of bentonite as a binder is proposed also. Bentonite makes it possible to obtain high-strength pellets with reduced iron.

The issue ends with an article that analyzes the experience of using filtering equipment at mining and processing enterprises in Russia. It notes the increasing distribution of filters, the designs of which combine dehydration processes of different physical essence in one installation. This increases the separation efficiency, provides a reduction in energy and operating costs, and allows for the full automation of the filtration redistribution.

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