Rusmag Company

Asbest, Russia

Rusmag Company

Asbest, Russia

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Kartovskii Y.V.,Sverdlovskii Research and Design Institute of Chemical Machine Building SverdNIIkhimmash | Chernozubov V.B.,Sverdlovskii Research and Design Institute of Chemical Machine Building SverdNIIkhimmash | Glushko K.V.,Sverdlovskii Research and Design Institute of Chemical Machine Building SverdNIIkhimmash | Chemezov V.A.,Sverdlovskii Research and Design Institute of Chemical Machine Building SverdNIIkhimmash | And 7 more authors.
Chemical and Petroleum Engineering | Year: 2011

Production equipment layout is described for a three-vessel evaporation unit fitted with descending film equipment. The device is intended for concentrating magnesium chloride solution before carnallite synthesis, from which magnesium metal is subsequently prepared by electrolysis. Engineering properties of the equipment, composition of the starting and evaporated solutions, and also the planned operating regime are noted. Features of the bahavior of magnesium chloride solution, which should be considered for provision of successful operation without crystallization of salts within it, are mentioned. © 2011 Springer Science+Business Media, Inc.


Derbyshev A.S.,Sverdlovskii Research and Design Institute of Chemical Machine Building SverdNIIkhimmash | Tretyakov D.S.,Sverdlovskii Research and Design Institute of Chemical Machine Building SverdNIIkhimmash | Efimov A.N.,Sverdlovskii Research and Design Institute of Chemical Machine Building SverdNIIkhimmash | Shchelkonogov A.A.,Rusmag Company | And 2 more authors.
Chemical and Petroleum Engineering | Year: 2011

The article is devoted to choice of structural material for equipping a projected vacuum crystallization unit (VCU) for salt crystallization with intense solution concentration. Results of studies show that the low corrosion resistance of steel 12Kh18N10T, 10Kh17N13M3T, 08Kh22N6T, 08Kh21N6M2T, and alloy 06KhN28MDT specimens in vapor phases and solutions under operating conditions for the projected VCU do not permit their application for manufacturing equipment and pipelines operating in contact with weakly acid saturated potassium chloride solutions and vapor phases of these solutions boiling under vacuum. Under the operating conditions for the projected VCU titanium is the sole metallic material that has in a broad metallurgical range high production and mechanical properties, and corrosion resistance, which makes it possible to provide a standard service life both for individual assemblies and a VCU as a whole. Successful experience of using titanium as the main structural material for evaporation unit equipment in the Slavyansk and Mozyr Salt Extraction Combines, Uralkalii, the Ufalei Nickel Combine, and a number of other producers for over 35 years demonstrates the high reliability of using titanium for manufacturing equipment of a projected VCU, processing corrosive weakly-acid saturated potassium, manganese, and sodium chloride solutions, containing a solid phase in the form of salt crystals. In order to manufacture vessels for a projected VCU, operating at atmospheric pressure, it is possible to use nonmetallic materials or carbon steel with coating. The greatest chemical resistance, according to results of research in saturated chloride solutions with a solid phase as applied to equipment and pipeline operating conditions for a projected VCU, applies to a Dion 9400 coating produced by the companies Reichold and Asplit Dupont. © 2011 Springer Science+Business Media, Inc.


Tretyakov D.S.,Sverdlovskii Research and Design Institute of Chemical Machine Building SverdNIIkhimmash | Ryabkov V.A.,Sverdlovskii Research and Design Institute of Chemical Machine Building SverdNIIkhimmash | Trufanov V.A.,Sverdlovskii Research and Design Institute of Chemical Machine Building SverdNIIkhimmash | Chemezov V.A.,Sverdlovskii Research and Design Institute of Chemical Machine Building SverdNIIkhimmash | And 6 more authors.
Chemical and Petroleum Engineering | Year: 2011

Preparation of magnesium from multimillion ton asbestos production dumps, i. e., serpentinite, provides its competitiveness in the world and internal markets due to the low raw material costs, whose price in the net cost of finished metal reaches 30%. Artificial carnallite for magnesium electrolysis is separated by crystallization in multistage vacuum-crystallization units from a solution formed as a result of synthesizing magnesium chloride solution and added potassium chloride. Chromium-magnesium solution forms on leaching serpentinite with hydrochloric acid and separation of impurities, but potassium chloride from the electrolysis bath after dissolution and crystallization is returned again to the technology. Crystallization units for carnallite and potassium chloride are fitted with self-evaporation crystallizers of SverdNIIkhimmash construction, which are used successfully in the production of many inorganic salts. © 2011 Springer Science+Business Media, Inc.


Tretyakov D.S.,Sverdlovskii Research and Design Institute of Chemical Machine Building SverdNIIkhimmash | Kartovskii Y.V.,Sverdlovskii Research and Design Institute of Chemical Machine Building SverdNIIkhimmash | Tokarev S.M.,Sverdlovskii Research and Design Institute of Chemical Machine Building SverdNIIkhimmash | Vasiliev S.G.,Sverdlovskii Research and Design Institute of Chemical Machine Building SverdNIIkhimmash | And 10 more authors.
Chemical and Petroleum Engineering | Year: 2011

The aim of the work is determination of production temperature and salt regimes for an industrial three-vessel vacuum evaporation unit for concentrating magnesium chloride solution, included within technology for artificial carnallite preparation. A scheme is provided, and a unit developed and manufactured for this purpose is described. Experimental data are provided that were obtained during magnesium chloride solution concentration within a single-tube evaporation unit with a descending film (unit) under different regimes. A distribution device is selected for provision of stable film flow over the inner surface of a heat-exchange tube. The possibility is confirmed by experiment for the first time of using equipment with a descending film for concentrating actual magnesium chloride solution. Data are obtained for the limiting salt content within the concentrated solution providing operation of the unit in a crystallization-free regime. © 2011 Springer Science+Business Media, Inc.

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