A complex of technological operations for the formation of a cathode liner based on manganese dioxide is of particular importance in the production of tantalum oxide-semiconductor capacitors. Electrical characteristics and reliability indicators of capacitors are laid at this stage in their manufacture. In according with the classical technology, the formation of a semiconductor coating of MnO2 on tantalum capacitors is associated with multiple heating of oxidized anodes with the previous impregnation in solutions of manganese nitrate. It has a negative effect on the quality of the Ta2O5-dielectric. To minimize the defect formation in the dielectric, is realized a periodic electrochemical anodization of the tantalum anode in the acetic acid solution by anodic connection of the sections of the capacitors to the direct current source. The authors proposed to modify the process of reanodization of sections of tantalum oxide-semiconductor capacitors by changing the composition of the electrolyte. The results of the investigation of the electrochemical anodizing of a tantalum anode in aqueous solutions of nitric acid and manganese nitrate are presented, the morphology of the obtained coatings, their phase composition, as well as electrical parameters of the sections of capacitors manufactured by the proposed method are analyzed.

Keywords: Tantalum oxide-semiconductor capacitor, reanodization, manganese nitrate, capacitance, leakage current, dielectric loss tangent, electrolyte

The processes of extraction and processing of oil and oil products are accompanied by negative consequences at the level of the environment in the form of accidents. They act both on the water area and on land. This article is devoted to the liquidation of emergency oil and oil products spills with the help of natural sorbents. For the analysis, three readily available materials were taken in the national economy of the Russian Federation: wool, wheat straw and sawdust. The main indicative value for the sorbent is its oil capacity (sorption capacity) the amount of absorbed oil, which depends on the degree of specific surface of the material. The higher the specific surface area, the higher the sorption capacity. To determine the oil capacity, each of the materials was placed on a flat surface and artificially contaminated with oil for one hour. During the experiment, the absorbent capacity of the sorbents was determined, which for each proved to be different. Based on the data, graphs are constructed that clearly show the applicability of a material.

Keywords: Oil, oil products, extraction, oil consumption, material, sorbent, absorption, adsorption, accident, liquidation

In this paper, samples containing gold nanoparticles (NPs) distributed in different optically transparent media have been synthesized and characterized. A liquid (aqueous) and a solid (porous silicate glass and polymer (polyvinylpyrrolidone)) media were used. The samples obtained were characterized by optical spectroscopy and electron microscopy. The position of plasmon resonance band was analyzed depending on the dielectric constant of the medium.

Keywords: gold nanoparticles, colloidal solution, polymer, porous glass

In recent years, the most widely used semiconductor oxide-tantalum capacitors in high frequency circuits acquired, which causes the need to reduce resistance of the contact and the semiconductor layers. One solution to this problem and at the same time, promising way of improving solid-state tantalum capacitors is to modify process technology for applying the semiconductor layer and heat treatment resistive coating of colloidal graphite. Contact carbon layer according to conventional technology is applied by impregnating the tantalum capacitor sections in an aqueous suspension of colloidal graphite (usually imported), and then produce exposure to air and heat treatment at an elevated temperature. This article presents the results of studies of the effect of conditions of application of the contact layer of colloidal graphite on the electrical characteristics of sections of tantalum oxide-semiconductor capacitor, in particular in the equivalent series resistance, the technique of applying aquadag. Described in detail the design of solid-state tantalum capacitor, the role of the contact carbon layer and its contribution to the ESR of the capacitor.

Keywords: oxide-semiconductor capacitors, colloidal graphite, resistance of the capacitor, the cathode coating, suspension, immittance, aquadag

A manganese-vanadium concentrate precipitate containing V2O5 and MnO2 is formed on the stage of wastewater ozone treatment in sodium technology of vanadium-containing converter metallurgical slag processing. Vanadium content of the slag changes between 4 and 15 % wt and manganese content changes between 62 and 75,5 % wt. The article examines influence of concentrate with 14,33 % wt V2O5 and 65,44 MnO2 % addition in slag-with-soda furnace feed to determine positive effect on the result of roasting. Vanadium content of the slag is 22,34 % wt expressed as V2O5. Roasting temperature is 850 °C, Na2O/V2O5 molar ratio is 0,5:1, the concentrate is added as 0,25; 0,5; 1,0 mass ratio on the content of soda in starting furnace feed. Degree of vanadium conversion in water- and acid-soluble compounds is increased. The most effect is provided on the process of interaction between vanadium oxides and spinels with sodium compounds with formation of water-soluble vanadium forms. The optimal addition of concentrate is 0,25-0,5 mass ratio on the content of soda. Increasing of concentrate content is not effective. Both manganese and vanadium contained in concentrate give positive effect. Concentrate addition can be recommended for existing industry regardless of type of alkali addition on the stage of roasting.

Keywords: vanadium-containing slag, oxidating roasting with sodium, manganese-vanadium concentrate, increasing of vanadium yield, soluble compounds of vanadium and manganese

In the present work, a study was made of the properties of a photocatalyst-adsorbent based on metal oxide, which was titanium dioxide (TiO2). The photodegradation activity of two organic dyes under the action of light was analyzed. The effect of the phase composition of the photocatalyst was compared on the example of three modifications of TiO2 - rutile, anatase and their mixture.

Keywords: TiO2, photocatalysis, metal oxide, dyes

The article presents the results of research of hydrodynamics of flow of the gas-suspension of conversion lime carbonate in a tube-dryer. For the first time equations for determining the speed and concentration of lime carbonate along the length of the tube-dryer at different air velocities and feed concentrations are received. The research results can be used to design pipes-dryers for large-tonnage productions of conversion of calcium carbonate. Experiments of research of hydrodynamics of the gas-suspension of conversion lime carbonate were carried out on the tube-dryer with an internal diameter to 0.069 m, length 4.8 m. Along the axis of the pipe on the rod vertically mounted discs, the first disc below the auger to 0.6 m, the second – above the auger to 0.7 m and further 1 m, total 5 disks.

Keywords: conversion lime carbonate, drying, tube-dryer

The article presents the results of researches of heat and mass transfer in the flow of the gas-suspension of conversion lime carbonate in a tube-dryer. For the first time equations for determining the influence of initial air temperature at moisture content in a tube-dryer, the influence of air temperature on heat rate are received. The research results can be used to design pipes-dryers for large-tonnage productions of conversion of calcium carbonate. Experiments of researches of heat and mass transfer in the flow of the gas-suspension of conversion lime carbonate were carried out on the tube-dryer with an internal diameter to 0.069 m, length 4.8 m. Along the axis of the pipe on the rod vertically mounted discs, the first disc below the auger to 0.6 m, the second – above the auger to 0.7 m and further 1 m, total 5 disks.

Keywords: conversion lime carbonate, drying, tube-dryer

In the present work the mesoporous transparent silica monolith with surface area of 650 m2/g was obtained by sol-gel method. Introduction of gold salt into reaction mixture allowed to form micro- and nanoparticles of gold in monolith's volume by rising the temperature. The obtained composite was stabilized by activation in air at 600 °C. It is an useful model for investigation of optical and catalytical properties of noble metal particles.

Keywords: gold nanoparticles, sol-gel synthesis, porous glass

Piezoceramics phases of (1-х)PbTiO3-xPbZrO3 is the basis of most high-performance piezoelectric materials. Electrophysical and mechanical properties of these materials can be varied over a wide range by varying the composition and by processing methods: the methods and modes of sintering conditions polarization. Topical to study the influence on the properties of PZT materials processing methods at the stages of manufacturing piezoelectric samples. In the role model of the object has been selected multicomponent system PbTiO3-PbZrO3-PbNb2/3Zn1/3O3-PbW1/2Mg1/2O3-PbSb2/3Mn1/3O3. Samples of piezoelectric elements for the study were obtained in two ways: in the first case, the sintering samples was carried out by the usual ceramic technology, and in the second by hot pressing. The grain structure was formed in both cases in the presence of the glass phase, the quantity of which decreases with increasing temperature, while in the first case, an increase in the velocity of the secondary recrystallization, and in the second of its suppression. It was found that regardless of the technology of the samples εT33/ε0, d33 and VЕ1 at high temperatures, due to the increase of grain and coercive field, which complicates the process of polarization. Maximum values εT33/ε0, d33 and VЕ1 samples prepared by hot pressing at 10 - 15% higher than if received by conventional ceramic technology.

Keywords: Piezoelectric ceramics, doping, combination, pezophase, piezomaterial

The full-cycle pilot complex was developed of conversion of natural and associated gases into synthetic hydrocarbons by the Fischer-Tropsch method. Including all general stages of GTL technology. The experimental studies on the motor fuels synthesis from "model' of the gas composition. Having of pre-reforming step determined of the need for removal of C2+ hydrocarbons, which leads to catalyst deactivation of conversion. Shown that the obtained synthesis-gas from conversion step may be used in the hydrocarbons synthesis by the Fischer-Tropsch method. The developed composite catalyst is allowing to obtain high-quality motor fuels from one-reactor method. The Uniting steps of hydrocracking and hydroisomerization of hydrocarbons from CO and H2.

Keywords: associated petroleum gas, GTL technology, Fischer-Tropsch synthesis, synthetic liquid hydrocarbons.

"One of the bottlenecks of the production of oxide-semiconductor capacitors is enough fast aging of impregnating solutions of manganese nitrate used to form the cathode electrode of manganese dioxide. This effect is caused by the formation and accumulation of impurities of oxides and nitrides of manganese in the solution, which leads to a poor-quality cathode coating of manganese dioxide on the tantalum anode and as a result, poor performance capacitors. Fast aging of impregnating solutions of the Mn(NO3)2 solutions leads not only to an increase in the cost of materials, but also significantly increases of the volume of waste. As a solution to this problem in the proposed article discusses aspects of chemical regeneration of contaminated solutions of manganese nitrate, analyzed the possible ways of its realization in relation to the existing production of oxide-semiconductor capacitors."

Keywords: Manganese nitrate, manganese oxides, cathode coating, impregnating solutions, manganese nitrides, manganese oxohydroxide, chemical regeneration.

The main maintenance of a diversification of production as activity of subjects of managing is considered. being shown in purchase of the operating enterprises, the organizations of the new enterprises, redistribution of investments in interests of the organization and development of new production on available floor spaces. The most important organizational economic targets of a diversification of management are presented by innovative activity of the industrial enterprise.

Keywords: diversification of management, production diversification, financial and economic purposes of a diversification, technological purposes of ensuring flexibility of production

The technology of producing foamed glass on the basis of technogenic waste, in particular high calcium waste and lithium-containing compounds, allowing to solve problems of ecology and resource saving. The possibility of using lithium-containing compounds as mineralizing additives foaming foam glass batch. Studied basic properties of foam glass.

Keywords: preparation of foam glass, industrial waste, high calcium waste, lithium-containing compounds, foaming foam glass batch, lithium-cobalt-oxide material, building insulation materials

The results of the solubility research of the polycomponent water organic systems with neopentylglycol, sodium formate and organic solvents are presented. The temperature concentration parameters of the extraction and crystallization processes of neopentylglycol and sodium formate are identified on the bases of the solubility diagrams obtained, the technological diagrams of the processes are given theoretical basis and enlarged laboratory experiment was carried out.

Keywords: neopentylglycol, aqueous organic systems, solubility diagrams, extraction, crystallization

In this article we consider the use of quasi-homogeneous approximation to describe the properties of disperse systems. We used a statistical method of polymer based on the consideration of all possible structures averaged macromolecules of the same weight. The equations to assess many additive parameters of macromolecules containing their systems. Statistical polymer method allows modeling branched, cross-linked macromolecules and containing their system in a state of equilibrium or non-equilibrium state. Fractal consideration of random polymer allows you to s imulate different types of random fractals and other objects studied by the methods of fractal theory. A method of statistical polymer is not only applicable to the polymers but also to composites gels associates in other polar liquids and aggregate systems. In this paper we described the state of colloidal solutions of silica from the viewpoint of statistical physics. This approach is based on the idea consists in the fact that a colloidal solution of silicon dioxide - silica sol consists of a very large number of interacting particles in a continuous motion. It is dedicated to the study of an idealized system of colliding, but not interacting particles sol. Analyzed the behavior of silica sol, in terms of Maxwell-Boltzmann distribution was calculated and the mean free path of the colloidal particles. Based on these data, it was calculated the number of particles that can overcome the potential barrier in a collision. For modeling the kinetics of the sol-gel transition, we have discussed various approaches.

Keywords: quasi-homogeneous approximation, disperse systems, statistical polymer method, the formation of cross-links, fractal method, sol, silica sol, sol-gel transition, the mean free path

The article presents the investigation of ultrasonic treatment influence on the size of the stearylamine floccules in the aminobutyric emulsion and on the stability of received emulsions. It was found that the amine floccules in the original aminobutyric emulsion have a bimodal size distribution with small particles predominantly 900 nm and large particles with size of 5500 nm or more. It was identified that ultrasonic treatment leads to decrease the stearylamine floccules size in 13-25 times, dimensions of obtained floccules are between 35 and 220 nm. The dynamics of size changes of stearylamine floccules was studied. The stearylamine floccules were obtained in aminobutyric emulsions after the ultrasonic treatment with an intensity of 15-30 W/cm2. It was found that after ultrasonic dispersion the process of amine floccules agglomeration takes place, the duration of this effect depends on the intensity of treatment.

Keywords: ultrasonic treatment, aminobutyric emulsion, stearylamine floccules, floccules dimensions, emulsion stability

Corrosion stability for 25 samples of mono- and bealkaline tungsten, molybdenum bronzes in solutions of acids HCl (20-26%), H2SO4 (21-60%), HNO3 (60%) and NaOH (20%), KOH (50%) alkalis at 293-358K and 1-15 month was studied. The samples of polycrystalline bronzes were prepared by electrolysis in melts of Li, Na, K, Rb, Cs of isopolytungstates and molybdates. General formula of bronzes chemical composition is Mx'My'EO3 with M', M'' - alkaline metals, E-W, Mo. High significance of corrosion stability of tungsten bronzes samples in water acids and alkalis was found. For molybdenum bronzes the best results in sulfuric acids and solutions were found. These differences are connected with peculiarity of crystal chemistry and nonstoichiometry of polyalkaline oxide tungsten, molybdenum bronzes.

Keywords: oxide alkaline bronze of W, Mo, corrosion stability, strong electrolyte, acid, alkali

The possibility in principle of using pulp and paper industry waste as a binder for pelletization flotation potassium chloride bases on conducted researches. Defined technical conditions of pelletization flotation potassium chloride using pulp and paper industry’s waste as binder provide product with good commercial qualities, which are yield of marketable fraction (85.71 %) and resistance of granule (29.51 N). The researches for studying conditions of baking were conducted and subsisted defects on granule surfaces. There are two kinds of defects. One of them is inner defect is represented as caverns and flaws. Another type of defects are outer defects. They are represented as crystallized structural arrangements in the form of coreless tube that has net structure and includes fiber and cubic shaped microcrystals. Granule defects form after baking them with temperature higher than 120ºC.

Keywords: flotation potassium chloride; pulp and paper wastes; adhesive; commodity characteristics of fertilizers, defects granules

Pourbaix diagram data of manganese nitrate dissociation in aqueous solutions at 100, 250 С. The data for the study of manganese oxides phase stability at various conditions such as pH, temperature, partial pressure of oxygen, nitrogen oxide, water vapor are shown. Phase stability diagrams allow to show the influence of partial pressure of a particular gases which are introduced into the reaction zone on phase equilibrium of system and determine termination products of the reaction at different conditions. Phase diagrams of manganese compounds and thermodynamic models of manganese nitrate degradation products are plotted.

Keywords: manganese nitrate, manganese oxide (IV), redox reactions, Pourbaix diagrams, phase stability diagram

In this article we consider the use of quasi-homogeneous approximation to describe the properties of disperse systems. We used a statistical method of polymer based on the consideration of all possible structures averaged macromolecules of the same weight. The equations to assess many additive parameters of macromolecules containing their systems. Statistical polymer method allows modeling branched, cross-linked macromolecules and containing their system in a state of equilibrium or non-equilibrium state. Fractal consideration of random polymer allows you to s imulate different types of random fractals and other objects studied by the methods of fractal theory. A method of statistical polymer is not only applicable to the polymers but also to composites gels associates in other polar liquids and aggregate systems. In this paper we described the state of colloidal solutions of silica from the viewpoint of statistical physics. This approach is based on the idea consists in the fact that a colloidal solution of silicon dioxide - silica sol consists of a very large number of interacting particles in a continuous motion. It is dedicated to the study of an idealized system of colliding, but not interacting particles sol. Analyzed the behavior of silica sol, in terms of Maxwell-Boltzmann distribution was calculated and the mean free path of the colloidal particles. Based on these data, it was calculated the number of particles that can overcome the potential barrier in a collision. For modeling the kinetics of the sol-gel transition, we have discussed various approaches.

Keywords: quasi-homogeneous approximation, disperse systems, statistical polymer method, the formation of cross-links, fractal method, sol, silica sol, sol-gel transition, the mean free path

The article presents a study on the effect of ultrasonic reduction slurry flotation sylvinite concentrator to further process sylvinite ore concentration. Combined use of the purification process (ultrasonic processing, followed by gravitational desliming ore) in step slurry flotation increases cleaning efficiency minerals from insoluble impurities and reduces the loss of potassium chloride with slurry has been shown. Increased extraction of insoluble residue in the sink hydrocyclone at the combined way desliming without additional consumption of reagents will lead to lower rates of reagents on mechanical desliming, reducing the front sludge flotation and increase the productivity of the equipment in the sylvinite ore concentration technology of flotation process.

Keywords: ultrasonic treatment, slurry flotation, sylvinite ore concentration, potassium chloride

The present research was realized in the field of expanded clay production technology with support ingredient as a waste of biological sewage treatment and charcoal production. The iInfluence of the introduced ingredient on the blowing of clay raw materials was analysed. The comparative physical and mechanical characteristics of samples, the main chemical reactions which took place during the firing of clay with addition of waste in raw materials were provided in article.

Keywords: expanded clay, coal waste, low-melting clays, treatment facilities, blowing, waste water, activated sludge, ecology, construction materials, porosity.

The features of the formation of composite coatings deposition layered matrix with alternating layers of nickel and copper by chemical vapor deposition. It is shown that the deposition process is oscillatory, detects the presence of polyvinylpyrrolidone, obrazuyuschegokompleksnye connection with copper and nickel.

Keywords: composite coating, chemical vapor deposition, nickel, copper, polyvinylpyrrolidone, oscillatory deposition process, the complex compound of nickel and copper

In the present study, platinum was electrodeposited onto rotating disc electrode coated with Vulcan XC-72R Nafion suspension and uncoated smooth glassy carbon electrode from acidic solution of 5mМ H2PtCl6. The electrochemically active surface area of platinum particles obtained was determined by cyclic voltammetry and the structural characteristic of the particles was studied by scanning electron microscopy. The impact of current and time on the electrochemically active surface area of platinum particles electrodeposited on the carbon supports was also investigated and described in this paper. The present work is expected to be utilized and contribute to the improvement of electrochemically active surface area of platinum catalysts for low temperature fuel cells.

Keywords: galvanostatic electrodeposition, chronopotentiometric curves, chloroplatinic acid, vulcan XC-72R, fuel cells