Tsvetnye Metally

The articles, which are published in the 8-th issue of the «Tsvetnye metally» journal, cover the thematics of hard and light non-ferrous metals, noble metals and alloys, rare and radioactive metals. This issue shares the questions of theory and practice of ore benefication, production and processing of non-ferrous metals, complex usage of ore raw materials, economics and management of production.

This journal presents a publication of the issues from «Russian Copper Company» JSC. There is generalized the implementation experience of innovation projects on enterprises, which belong to the group of companies of Russian Copper Company.

First collection of articles considers the innovation implementation results on the oldest Russian enterprise of copper metallurgy in Karabash city. The copper-smelting plant, which has more than a 100-years history, gets another impulse in its development, due to the usage of more progressive technologies and equipment in non-ferrous metallurgy, by the strict requirements of environmental regulations and competition on the market of copper-containing raw materials. The information, which is presented in the articles, shows the ways of solving the problems of an enterprise, positive and negative experience of implementation of the innovation technologies and equipment. The next collection of articles from Russian Copper Company will be published in the 9-th issue of a journal (September, 2012).

The article by N. V. Serova, M. P. Lysykh, T. V. Olyunina, A. G. Kitay and V. T. Dyachenko, shares the development results of a method of autoclave leaching of oxidized nickel ores with using the elementary sulfur. This method can compete with sulfuric acid autoclave leaching, taking into account the considerable cheapness of the basic reagent and more low values of the technological parameters of the process.

The data about the first years of the operation of Kazakhstan electrolysis plant are presented in the article by S. A. Nikiforov and B. S. Dyblin. There is also given the historical information about the startup of plant. There are given some constructive peculiarities of aluminium electrolysers, along with the data about the heat and power engineering characteristics of electrolysers. The technology method is based on the control and management of the process temperature. The data about the power yield, are presented along with a specific energy consumption and quality of the used alumina. The reserves in the increasing of technical and economic indicators are shown.

The «Metal processing» section presents a scientific review, which is devoted to the global achievements in the development area of WC – Co hard alloys with the gradient structure. The history of this question is briefly presented.

The following kinds of gradient structures are considered:

-the structures, which are characterized by the variable composition on the volume or the height of the product;

-the structures, which are characterized by the changing of the alloy`s microstructure (granularity and/ore the structure of the phases) in the volume or the thickness of the product;

-the structures, which are characterized by the presence of the alloy`s phases, which are specified by the thickness.

The results of the experimental researchings are discussed for the purpose of the creation of functional gradient, at the expense of the carbide phase of various structure, as well as the gradient structure, which is created by this phase of the various dispersity.

The mechanism of the gradient formation is discussed; in particular – the cobalt migration in the volume of the sintered product.

The basic attention is payed for the solid alloys, which are used for the equipping of the cutting and boring tools.

The global usage capacity of WC-Co-alloys for this instrument is ~85–90 % from the common usage of solid alloys.

During the cutting and boring process, the solid alloys with a gradient structure provide the increasing of the durability of tools to 2-4 times.

More details about the issue you can find below or book printed or electronic version of the journal.