All Russia Research Institute of Chemical Technology

Moscow, Russia

All Russia Research Institute of Chemical Technology

Moscow, Russia

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Gordienko V.A.,Moscow State University | Starkova M.V.,All Russia Research Institute of Chemical Technology
Moscow University Physics Bulletin | Year: 2011

The structural features of the distribution of Pd and Fe atoms in multilayer films derived via Penning-discharge sputtering are studied. The preparation of films is a highly nonequilibrium process; at the same time, it is relatively simple in terms of possible structural implementations, which are shown during the self-organization of sputtered atoms through the formation of clusters with an individual ordered structure. It is important that the "dynamic chaos" that appears during sputtering is stabilized during crystallization, which makes it possible to study the resulting structures using nondestructive inspection methods with fairly wide possibilities. Therefore, it is of interest to study self-organization during the sputtering of multilayer films in order to reveal the mechanisms of cluster formation and to simulate them. It is also shown that the self-organization during sputtering and subsequent crystallization is accompanied not only by the ordering in the form of clusters, buts also by an ordered arrangement of these clusters. © 2011 Allerton Press, Inc.


Kurkov A.V.,All Russia Research Institute of Chemical Technology | Pastukhova I.V.,All Russia Research Institute of Chemical Technology
Journal of Mining Science | Year: 2010

The authors offer a new, nanotechnology-based concept of flotation. The article discusses noncovalent interaction between functional groups of the organic phosphorus collector Phosphenox at an interphase, which results in the supramolecular self-assemblage of stable nanostructures. The ways to reaching complementariness of the collector and active site of a mineral surface are indicated with the aim to improving selectivity of mineral separation. © 2010 Pleiades Publishing, Ltd.


Molchanova T.V.,All Russia Research Institute of Chemical Technology | Zharova E.V.,All Russia Research Institute of Chemical Technology | Peganov V.A.,All Russia Research Institute of Chemical Technology | Akimova I.D.,All Russia Research Institute of Chemical Technology
Atomic Energy | Year: 2015

Experimental data on the sorption extraction of uranium from fluorine-containing solutions on different types of modern ion-exchange absorbers and structures in order to improve the technological schemes for reprocessing wastes from radiochemical production are presented. The primary technological relations are studied and the optimal indices in static and dynamic regimes of sorption-desorption extraction of uranium from model systems simulating production fluorine-containing solutions are determined. A chelate-forming aminophosphonic cation-exchanger Purolite S950 with uranium capacity up to 20% is recommended. It is shown that uranium concentration in the waste ≤0.003 g/liter can be obtained. It is found that uranium desorption by a 15% solution of sodium carbonate is a highly efficient process with desorption time 10 h and degree of uranium desorption 99.92%. © 2015 Springer Science+Business Media New York


Kotsar M.L.,All Russia Research Institute of Chemical Technology | Lavrikov S.A.,All Russia Research Institute of Chemical Technology | Nikonov V.I.,All Russia Research Institute of Chemical Technology | Aleksandrov A.V.,Chepetsky Mechanical Plant | And 2 more authors.
Atomic Energy | Year: 2011

The use of high-purity (iodide) titanium, zirconium, and hafnium for obtaining building and absorbing materials for use in nuclear power is examined. The possibilities for iodide refining of these metals to remove impurities and the chemical composition, microstructure, and microhardness of iodide rods are presented. Regimes for chemical decontamination of raw materials and iodide refining of metals in commercial equipment are examined. It is shown that iodide refining makes it possible to use as raw materials the wastes and recyclables from metallurgical and rolled production of titanium, zirconium, and hafnium and to obtain from them under commercial conditions high-purity metals with multiple uses, including as components of a charge for smelting alloys to be used in nuclear power. Materials based on titanium, zirconium, and hafnium of consistent quality which are obtained using metal iodides will make it possible to extend the VVER service life to 60 years. © 2011 Springer Science+Business Media, Inc.


Talanov A.A.,Chepetsky Mechanical Plant | Kotsar M.L.,All Russia Research Institute of Chemical Technology | Konshin R.S.,Chepetsky Mechanical Plant | Kiverin V.L.,Chepetsky Mechanical Plant
Tsvetnye Metally | Year: 2016

This paper shows the results of tests of modernized equipment with increased productivity for vacuum distillation of calcium from copper-calcium alloy in Chepetsky Mechanical Plant. Five new types of equipment were tested. The technology was optimized on this equipment. Industrial exploitation required the distillation retort with optimal geometry and loading mass of "rich" coppercalcium alloy and electric resistance furnace SH-1 (-1) with zone heating and 60 kW capacity. In comparison with the basic method, calcium obtaining in the optimal method was increased by ∼9 kg (by 13.5%) during the loading of "rich" copper-calcium alloy (149±5 kg) in distiler and concentration of power in the low part of apparatus at the end of the process. Access of distillate to the ingot and the mass fraction of calcium in the "poor" copper-calcium alloy was unchanged at 83.5 and 20.8%, respectively. Specific energy consumption was not increased and equaled to 5.12 kWh/kg of Ca. Distillate reflow was decreased by 8% in 100 processes and equaled to 3.45 (instead of 3.75 in the base case). Nowadays, after the pilot testings, the entire site of distillation of calcium production of Chepetsky Mechanical Plant was equipped with modernized retorts and three-zone furnaces with capacity of 20 kW in each heating zone. The capacity in the modernized furnaces is consumed mainly for alloy heating with the level, decreasing during the distillation process.


Kol'Tsov V.Yu.,All Russia Research Institute of Chemical Technology
Glass and Ceramics (English translation of Steklo i Keramika) | Year: 2014

A method for solid-phase neutralization of waste waters (in the production of ultrapure quartz) by dry caustic lime in a moving bed of the material is studied. This method will make it possible to obtain at the exit from the granulator a solid granular product convenient for subsequent processing (briquetting and drying for the needs of metallurgy or shipment). Advantages of this method over the liquid phase method are that there is no need for preparing milk of lime or filtering finely disperse residue, the volume of wastes waters is smaller and a flux is obtained in a granular form. © 2014 Springer Science+Business Media New York.


Peganov V.A.,All Russia Research Institute of Chemical Technology | Molchanova T.V.,All Russia Research Institute of Chemical Technology | Akimova I.D.,All Russia Research Institute of Chemical Technology | Zharova E.V.,All Russia Research Institute of Chemical Technology
Atomic Energy | Year: 2015

The process of separating high-purity chemical concentrates of uranium, which are an intermediate product in the general scheme of obtaining materials of the nuclear industry, is studied and the parameters of the sorption-desorption concentration of uranium using different regenerating solutions are determined. Variants and combinations of the processes of selective separation of chemical concentrates in the form of ammonium and sodium polyuranates and uranium peroxide from commercial desorbates and re-extracts in application to the reprocessing of raw materials from the Elkonskoe and Streltsovskoe deposits are proposed. It is shown that chemical concentrates of uranium meeting the ASTM C 967-08 standard specifications can be obtained. The results presented can be used to improve the technological schemes of uranium extraction during the reprocessing of ores and concentrates with the final product meeting all applicable regulatory requirements. © 2015, Springer Science+Business Media New York.


Morozov A.V.,Russian Academy of Sciences | Mezrin A.M.,Russian Academy of Sciences | Frolov N.N.,All Russia Research Institute of Chemical Technology | Kudryavtsev E.M.,National Research Nuclear University MEPhI
Journal of Friction and Wear | Year: 2015

Thin films (with thicknesses of less than 1 μm) based on oxides of metals (Zr, Y, Al) are investigated. The mechanical characteristics of the coating–steel composition are studied, the static (rest) and dynamic coefficients of the sliding friction are determined, the abrasive wear-resistance is comparatively estimated. It is shown that the presence of films insignificantly changes the elastic modulus, but increase the hardness of the treated steel surface. It is established that the coatings decrease the coefficient of friction, in this case after the run-in of the friction pair the coatings under investigation can refer to the anti-jump class. The estimation technique proposed for the abrasive wear-resistance allows one to compare the nanoscale coatings. The results of the investigations on the wear-resistance show that the coating based on Zr–Y oxides has the best wear resistance, while the coating based on Al oxide has the worst. © 2015, Allerton Press, Inc.


Kosynkin V.D.,All Russia Research Institute of Chemical Technology | Molchanova T.V.,All Russia Research Institute of Chemical Technology | Peganov V.A.,All Russia Research Institute of Chemical Technology | Zharova E.V.,All Russia Research Institute of Chemical Technology
Russian Metallurgy (Metally) | Year: 2015

The article presents the results of sorptive extraction of rare-earth elements (REE) from the solutions and slurries of complex salt compositions using sulfocationites and carboxyl cationites with a predominant content of the latter on laboratory and pilot scales. Upon REE sorption from hydrate slurry on KM-2p carboxyl cationite, the REE extraction rate of at least 98% has been achieved, and the following factors of ΣREE purification from impurities have been obtained: KREE/Al = 1.7, KREE/Th = 2.3, KREE/Ca ≈ 20, KREE/Zr = 15, KREE/Fe ≈ 40, and KREE/P,F ≈ 90. It is demonstrated that the REE capacity of cationite SG-1m is higher than that of cationite KM-2p by 10%; moreover, the content of thorium on KM-2p cationite is lower by 2.5 times and that of zirconium by 6 times. After the recovery of saturated cationites by 1.5–2.0 M HNO3 solutions, strippants have been extracted with a REE concentration of 15–20 g/L. The factors of REE purification from impurities upon desorption are as follows: KREE/Al = 2.5, KREE/Th = 0.5, KREE/Ca = 5.3, KREE/Zr = 5.6, and KREE/Fe = 0.8. The REE recovery rate is ≥99%. © 2015, Pleiades Publishing, Ltd.


Talanov A.A.,Chepetsky Mechanical Plant | Kotsar M.L.,All Russia Research Institute of Chemical Technology | Kiverin V.L.,Chepetsky Mechanical Plant | Grachev R.S.,Chepetsky Mechanical Plant
Tsvetnye Metally | Year: 2015

Copper losses appear during the production of metallic calcium by electrolytic method, which compensation requires the introduction of cathode copper (14.7 kg per 1 ton of calcium) into the electrolyzer. The process of production of superconducting matters at Chepetsky Mechanical Plant forms the copper-containing wastes, which are the compact composites, having different shapes and sizes, consisting of wire made of niobium-titanium alloy NT-47 (HT-47) on copper base, and commingled turnings, containing copper and alloy particles and lubricating-cooling fluid. This article considers the following methods of superconducting matter waste processing: - high-temperature processes including copper melting. - dissolution of copper from superconducting matter rods directly in copper-calcium alloy in the running electrolyzer. - obtaining of briquettes by pressing the turnings followed by vacuum annealing at the temperature of 700-750°C. The first method was found to be unsuitable because of the formation of copper alloys with components of niobium-titanium wire. The obtained ingots did not dissolve in the copper-calcium alloy, because titanium and niobium are insoluble in calcium. The second and third methods are the most perspective of the considered ones. To implement the second method, a technological scheme for the processing of superconducting rods was developed. This scheme includes utilization of both copper and niobium-titanium alloy. However, at present it is not being applied at the plant because of difficulties of sorting superconducting matter wastes. Processing of turnings of superconducting matter wastes on an industrial scale by the third method covers about 70 per cent of copper requirement for calcium manufacturing.

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