Technologies providing for competitiveness of main refractories on the domestic and foreign markets

The paper considers technological innovations successfully used in large-scale production, which ensure good competitive prospects for the Magnezit Works with respect to its competitors. __________ Translated from Novye Ogneupory, No. 12, pp. 13–17, December, 2006.     

Relation Between Texture and Quality Characteristics of Rolled Stock and Control of Continuous Plastic Deformation

Metal Science and Heat Treatment - The relation between the texture parameters suggested earlier for controlling the properties under heat treatment and the quality characteristics of deformable...     

Experience and prospects for beneficiating magnesite ores from the satkinsk deposits (Review)

Conclusions At the Magnezit Combine for the first time in our country magnesite has been dressed in heavy suspensions.Experience accumulated during the operation of heavy-medium equipment facilitated a significant improvement in the production scheme and equipment formulation for separation of the ores in heavy suspension.The introduction of heavy-medium separation permitted the retreatment of depleted ores and dumped material. The yield of concentrate increased by 11.5% with a simultaneous increase in the yield of tailings by a factor of 3.76 and a reduction in the cost of the handling of 1 ton of concentrate by 71.9 kopecks.Work is being done to find the optimum version of reprocessing the screenings from heavy-medium fractions 8-0 mm.The most promising methods of beneficiating magnesite are deemed to be flotation beneficiation, photoseparation, and gravitational dressing, using heavy-medium turbocyclones. Work is also being done to study further the prospective method of chemical beneficiation of magnesite raw materials.Translated from Ogneupory, No. 6, pp. 32–38, June, 1985.     

Dispersion study of open slot-lines taking into account conductor thickness and substrate width

By means of singular integral equations' method we've studied dispersion of open slot lines having nonstandard cross-section geometry. Peculiar dependence of eigenmodes' number and slot width between conductor strips has been found.     

俄罗斯风景园林的全球化趋势

从10世纪时东正教和拜占庭文化的融合起,俄国开始了文明史上的全球化的进程,作为当代文化的一个非常重要的部分,俄罗斯风景园林已经在过去的15年里经历了全球化的趋势,而且完全反映了俄罗斯现代政治和经济生活的各个方面。俄罗斯风景园林专业的有识之士认识到风景园林全球化过程的积极影响,也意识到全球化正给俄罗斯带来的危机;失去国家的特性,忽视地方传统,使俄罗斯成为“一个理想化的西方世界的影像”。     

Magnesite beneficiation in heavy suspensions

Conclusions A department for magnesite beneficiation in heavy suspensions with an output capacity of 1 million tons/ yr has come on stream at the Magnezit Combine.The flow sheet of the magnesite beneficiation includes beneficiation of the small and large ore fractions in separate sections in two stages using conical and cylindrical separators. The beneficiation of magnesite containing up to 5% impurities in place of the 15% envisaged in the design project should be carried out in a single stage.It was established that the process efficiency of magnesite separation depends on the lump size of the original magnesite, the type and productivity of the separators, and the structuromechanical properties of the suspension.The beneficiation of the magnesite in heavy suspensions gave concentrate of grades 1 and 2 containing 45–46% MgO, 0.5–0.8% SiO₂, and 0.8–1.2% CaO. The concentrate yield was 85–95%.The wear of MKhS and PShS bricks produced from the powder of the beneficiated magnesite is 10–15% less than that of bricks produced from the powder of ordinary magnesite.Translated from Ogneupory, No. 1, pp. 31–37, January, 1978.     

Simple method for investigating electromagnetic properties of high-Tc superconductors at two-millimeter wavelengths

A method for investigating the electromagnetic properties of high-T_c superconductors (HTS) in a 2-mm wavelength band has been proposed. The method is based on the use of a cylindrical tube open dielectric resonator (ODR) loaded with a HTS sample. The Josephson harmonic generation at microwave frequencies can be investigated by means of the method. A small cross section of the ODR makes it possible to investigate surface variations of HTS sample electromagnetic properties and their temperature dependencies.     

Features of new developments in the field of basic refractories

New developments are described from OOO Gruppa Magnezit and OAO Kombinat Magnezit concerning basic refractories, i.e. fluxes, starting mixes, hot repair mixes, backup materials, mortars, etc. A combined scheme for producing new forms of refractory materials, and also their physicochemical and operating properties are provided. Translated from Novye Ogneupory, No. 9, pp. 23–28, September 2008.     

New Gruppa Magnezit chromite-periclase refractories for a Zinc production Waelz kiln

Results of research work performed by Gruppa Magnezit are provided for prolonging the campaign of a zinc production Waelz kiln. Research into the corrosion resistance of refractory objects by a charge, consisting of ore and coke, is used to select the substance composition and development of technology for chromite-periclase refractory production that is inert towards Waelz material components. Service tests show that use of new refractories within the reaction zone of aWaelz kiln lining provides stable performance for the production process with high productivity and an increase in the time between repairs.     

Theoretical and experimental analysis of waveguide containing transversally magnetized strongly gyrotropic dissipative semiconductor layer

In this paper we present the Maxwell equations' solution method enabling to electrodynamically rigorously compute opened and screened waveguides containing transversally magnetized gyrotropic material. There have been theoretically and experimentally analysed a rectangular metal waveguide having along the narrow wall a gyrotropic dissipative layer ofn-InSb. There has been found the resonant waveguide losses' dependence on the magnitude of the biasing magnetic field. The correspondence of computed and experimental data is fairly good.