In this work, for the first time, studies of the mineralogical composition and chemical semi-quantitative spectral analysis (SQSA) of the Zhezkazgan processing plant tailings before and after leaching were carried out. It was found that copper is present in the tailings in the form of the chalcosine and bornite minerals. After leaching with the use of ammonium bifluoride and a hydro-pulse discharge, chalcosine and boronite are destroyed, and copper passes into a solution containing phosphoric acid. As a result of multiple placing of tailings into the solution, the copper content in it is brought to a concentration at which copper deposition on a stainless steel plate is possible. The identification of copper was implemented on a LAES-Matrix grain spectrometer. A visual comparative analysis of the changes in the structure of the treated ore waste was carried out using a TESCAN MIRA scanning electron microscope. Metallic copper was obtained from solution by electrochemical reactions in an experimental laboratory setup as a result. The technology was developed on an experimental laboratory setup for the extraction of metallic copper and brought the choice of the solution medium and electrochemical processes to the stage of obtaining the target metal with a purity of 99.99 %.

The crystal structure of crystalline hydrates of dimethylaminoarglabine hydrochloride and dimethylaminoarglabine hydronitrate is determined by single crystal X-ray diffraction. It is established that in a crystal, water breaks the hydrogen bond between the anion and the cation in dimethylaminoarglabin hydrochloride and weakens it in dimethylaminoarglabin hydronitrate, which improves the solubility of salts in water.

This study aims at review of the effects of dry separation method on the ore flotation efficiency and thoroughly discusses the possibility of waste enrichment by sieving through fine-mesh sieves with sizes (d > 0.4; 0.16 < d < 0.4; 0.08 < d < 0.16; d < 0.08 mm). A granulometric analysis of four samples waste production, was carried out and the copper content in each fraction was determined. According to the results of the study, the following was established: 1) the largest proportion has a grain size fraction over the range 0.16-0.08 mm in the "current tails" of the Karagaily ore-processing plant, in this fraction turned out to be the highest copper content; 2) a larger amount of copper is contained in coarse fraction of "stored tails" and "current tails" of Zhezkazgan ore-processing plant 1-2, therefore, it is possible to sift out a finely dispersed fraction; 3) the largest fraction by grain size is over the range of 0.16-0.08 mm in "aged tails" of Zhezkazgan PP 3, butthe largest weight percentage of copper is over the range 0.08 < d < 0.16. As a result of the studies, it was found that "current tails" and "stored tails" are applicable for the ore enrichment by dry separation method. The "Current tails" of the KPP are not suitable for enrichment by dry separation.

Методом РСА определена кристаллическая структура кристаллогидратов гидрохлорида диметиламиноарглабина и гидронитрата диметиламиноарглабина. Установлено, что в кристалле вода разрывает водородную связь между анионом и катионом в гидрохлориде диметиламиноарглабина и ослабляет в гидронитрате диметиламиноарглабина, что способствует улучшению растворимости солей в воде.

In the work, the waste of the Karagayly concentrator was processed at the experimental hydro pulse discharge (HPD) laboratory set-up in order to transfer the copper contained in them (0.11-0.14 %) into the solution and then partially precipitate it in the process of pulsed electrolysis. Pulp from waste (waste + water 1:1) was poured into the cell, then an acidic medium was adjusted to the value pH = 1.0-3.0 using a mixture of reagents. Under the action of electro-hydro pulse the process of pulsed electrolysis occurs simultaneously. Then the lid was tightly closed and a hydro-pulse discharge (HPD) was performed for 5-20 minutes. Under the action of the discharge, all the metals contained in the pulp went into solution and simultaneously precipitated, except for copper ions, which remained in the solution and partially deposited on the cathode. As a result, after processing the pulp with HPD, 20 solutions with a precipitate were obtained. All solutions and precipitates were studied on a copper content by an atomic absorption spectrometer. The optimal conditions for the extraction of copper into solution, namely, the duration of discharge HPD for 20 minutes at pH = 1 and presence of silicate and phosphate ions, were established. All interfering ions of other metals remain in the sediment, since copper is to the right of other metals in the galvanic series.

In this paper the authors consider a new genuine binder that makes it possible to produce coal briquets with desired consumer properties, i.e. reduced bitumen consumption, low production process temperatures and high moisture resistance. To make coal briquets, a batch mixture was prepared (coal fines, slack, riddlings)and then mixed in a mixer with a genuine emulsified bitum in a ratio of 20 to 1 by weight, after which the mixture was fed into molds and taken to a pressing machine. The resulting briquets were dried at a temperature of 30–40 ºC for 12 hours. The results of their tests displayed a compressiion strength of60–70 kg/cm2; when dropped from a height of one meter, the residue on the sieve +25 mm after sieving was 96–98 % (high strength). In addition, the briquets showed good resistance to moisture (low moisture capacity not more than 2–3 %) — water sprinkling did not loose the briquettes; there was no destruction even when doused into water. In the process of burning the briquets did not disintegrate, the flame was uniform in all directions. Calorific capacity tests of the produced briquets were made. Due to the improved commercial quality offered by briquees, after scoping calculations the saving of coal fuel was presupposed.

A promising technology for utilization of agricultural waste is chemical plasma technology based on high-temperature plasma-chemical effects and the decomposition of hydrocarbon products to produce synthesis gas. Emulsified mixture of cow dung and water was placed into the reactor for producing synthesis gas. On entering the emulsion is exposed to flame of a gas burner with a combustion temperature of two thousand degrees. The plasma-chemical reactor was regularly tested in different modes to find the best mode for the production of synthesis gas and its composition. The stability of the voltage at the output of the electric generator was monitored at various loads. As a result, a stable operation of the gas generator was achieved. Chemical characteristics of syngas obtained appeared to be high: gas was pure and without dust, CO2 content was low, but content of hydrogen and CO was high, namely 31.62 % and 37.28, respectively. Gas quality was checked by visual observation of the burner flame and the temperature of the burning gas using an infrared pyrometer. The stability of the flame and the stability of the temperature of combustion characterize the quality of synthesis gas. It is shown experimentally that the plasma-chemical treatment of hydrocarbons and agricultural wastes is a highly effective method for producing synthesis gas.

This work is devoted to study of electrical properties, phases of LnM(II)CoO(3.5) (M-II -Mg, Ca, Sr, Ba) which structure resembles to the structure of perovskite. The phases were obtained by solid-phase synthesis in accordance with the ceramic technology. The phase composition was determined by X-ray phase analysis. The diffractograms of the powders were indexed, the lattice parameters and its symmetry class were determined. It was found that the new compounds had a tetragonal symmetry, in the unit cell of which 16 structural units were located. Since complex oxides have high melting temperatures of about 1500-2000 degrees C, it is impossible to obtain good quality single crystals suitable for measurements. For this reason, the study of their thermodynamic and electrophysical properties was carried out on samples in the form of sintered powders. In this study, the conductivity isotherms were measured by impedance spectroscopy at different temperatures. Resistance hodographs on the complex plane were constructed. Using the method of equivalent circuits, the grain boundaries and the bulk resistances of the sample grains were determined. The results showed that the new compounds had a small grain-boundary resistance. Using the temperature dependences, the activation energies of the conductivity of new cobaltites were calculated. The activation energy of conductivity for these compounds was 0.113-0.184 eV. The character of the dependence of the conductivity at moderate temperatures showed their thermal activation. In the Arrhenius coordinates, these sections of the graph were described by a straight line. An increase in the activation energy of the conductivity in the series of Mg2+-Ca2+-Sr2+-Ba2+ cations was observed. The introduction of an alkaline earth ion with a large ionic radius led to a local distortion of the crystal lattice. This changed the value of the splitting of the d-levels of the transition metal-cobalt. This change in the activation energy as the alkaline earth metal cation changes can be explained by the change in the width of the forbidden band. Also, the replacement of rare-earth elements ions with alkaline-earth metal ions led to a structural disorder, to an increase in the formation of equilibrium charged point defects in the crystal structure, in which the strength of the bond with trapped charge carriers by electrons or holes in point defects in the crystal lattice with different alkaline-earth ions was different.

The article is devoted to the study of the capabilities, optimal conditions and efficiency of using herders for in-situ burning of oil as an oil spill response technique in the Kazakhstan Sector of the Caspian Sea (KSCS). The in-situ burning of spilled oil is considered as a preferred approach to fight large-scale oil spills offshore, when the oil slick spreads over large distances under the action of wind and currents, which also results in a greater spill area and greater spilled oil volume due to water absorption. Herders, or chemical oil-collectors, are used in the world practice for contracting oil slicks and their thickening before oil combustion. This study was conducted to determine the feasibility of using in the Kazakhstan sector of the Caspian Sea those herding agents that have proven to be effective for other types of oil and other marine conditions. The herding performance, suitability and efficiency of Siltech OP-40 and ThickSlick 6535 herders were investigated for Kashagan oil in artificial sea water with salinity level of KSCS.

The X-ray diffraction analysis of the LaCa3Fe5O12 ferrite (lanthanum ferrite) prepared through high-temperature synthesis via ceramic technology was performed. It was found that ferrites belong to tetragonal system. The electromagnetic response from a flat layer of the composite based on this material under electromagnetic radiation in the frequency range of 0.01-18 GHz was investigated. It is shown that the developed material effectively interacts with electromagnetic radiation. The interaction effectiveness is directly proportional to ferrite concentration. Increased concentration of ferrite leads to growth of the reflection coefficient due to high conductivity of the material and visible decrease in the transmission coefficient in the frequency range of 4-14 GHz.

In the laboratory of Engineering Profile "Physicochemical Methods of Investigations" in the Karaganda State University named after Ye. A. Buketov scheme of water softening was developed, on the basis of which JSC "Road construction materials" manufactured by experienced industrial water treatment plant for boiler for production of steam. Research indicates that this installation successfully replace traditional water softeners and are promising for conducting water treatment in boiler rooms without hot separation of water.

The new compounds Yb2MI 3Fe5O12 (M-I - Li, Na, K) have been synthesized by solid phase method from oxides of lithium, sodium, potassium, iron and lanthanum. By means of XRD analysis it was determined that the compounds crystallize in a tetragonal crystal system. The compounds' heat capacities have been measured in the range of temperature 298.15... 673 K and have been found lambda- shaped jumps on the dependence diagrams C-P(o)similar to f (T) which caused, probably by phase transitions of the second type.

Four compounds with the general formula GdM II CoO 3.5 (M II = Mg, Ca, Sr, Ba) have been prepared for the first time by high-temperature solid-state reactions between gadolinium(III) oxide, cobalt(II) oxide, and alkaline-earth carbonates. Their crystal class and unit-cell parameters have been determined by X-ray diffraction.

The acceptability and effectiveness in some situations, the practical application of dispersants for oil spill at sea is now well recognized and recorded in official documents in many countries and international organizations. To evaluate the quality offered to control the oil spills dispersants in our laboratory studies were conducted using the recommended techniques. Studies have been conducted on the impact of the proposed dispersant Kashagan oil in sea water of the Caspian Sea. On the basis of research has been done evaluating the effectiveness of dispersants at 5 degrees C, 25 degrees C and is given recommendation for their use.

Three compounds with the general formula YbM (3) (II) Fe5O12 (M-II = Mg, Ca, Sr) have been prepared for the first time by high-temperature solid-state reactions between ytterbium(III) oxide, iron(III) oxide, and alkaline-earth carbonates. Their crystal class and unit-cell parameters have been determined by X-ray diffraction.

The maintenance of phenol and its derivatives as a part of coal tar "Sary Arka spetskoks" is defined. The method of removal of phenol and its derivatives from coal tar of coke-chemical productions of the Central Kazakhstan using of energy of hydropulse discharge is developed. For definition's change composition of coal tar gas chromatograph Agilent 7890A with the mass selective detector 5975C Inert MSD was used.

ABSTRACT The use of oil spill dispersants is often regulated by national authorities to ensure that products approved for use as dispersants on spilled oil in national waters are of reasonable effectiveness and of low inherent toxicity. KING (Kazakh Institute of Oil & Gas) undertook a study to assess the use of oil spill dispersants on spilled oils in the Kazakhstan sector of the Caspian Sea (KSCS) to support decision-making for such regulations in the RoK (Republic of Kazakhstan). The KSCS has some characteristics that are unlike open ocean conditions in other parts of the world; the salinity is much lower than in the open sea. The shallow waters of the northern Caspian Sea have very low salinity (9 psu (practical salinity units) or less) due to the inflow of freshwater from the River Volga, and are frozen in winter. The deeper water in the southern part of the KSCS has a salinity of up to 14 psu. The effectiveness of oil spill dispersants is known to be affected by water salinity. Different countries around the world have developed different test methods to assess dispersant effectiveness. The project examined the options and decided to modify the WSL (Warren Spring Laboratory) LR 448 dispersant effectiveness test method, as used in the UK. The method was adapted by KING and testing was conducted by Karaganda State University (KSU) to test a variety of dispersants under Caspian Sea conditions. Dispersant effectiveness testing should be conducted with a test oil that is representative of oils that might be spilled in the area being considered. Kashagan crude oil was distilled to 200°C to simulate the evaporative loss that would occur shortly after the oil was spilled at sea and the residue used as the test oil in the dispersant effectiveness testing. Several commercially-available dispersants were tested using the modified LR 448 method with the 200°C+ Kashagan test oil under a variety of conditions with salinities ranging from 0 psu to 35 psu and at temperatures of 5°C and 25°C. The results indicate that some internationally recognized dispersants could be suitable for use in the KSCS.

LaM 3 I CrMnO6 (MI = Li, Na) and LaM 3 II CrMnO7.5 (MII = Mg, Ca) chromitomanganites were synthesized by ceramic technology from lanthanum oxide, chromium(III) oxide, manganese(III) oxide, lithium carbonate, sodium carbonate, magnesium carbonate, and calcium carbonate. X-ray powder diffraction shows that these compounds crystallize in cubic or tetragonal systems with the following unit cell parameters: for LaLi3CrMnO6 (cubic): a = 10.98 Å, V ○ = 1323.75 Å3, Z = 8, V u.c ○ = 165.47Å3, ρX = 3.64, ρpycn= 3.60 ± 0.04 g/cm3; for LaNa3CrMnO6 (tetragonal): a = 10.96 Å, c = 15.73 Å, V ○ = 1889.51 Å3, Z = 16, V u.c ○ = 118.09 Å3, ρX = 5.77 g/cm3, ρpycn = 5.70 ± 0.07 g/cm3; LaMg3CrMnO7.5 (cubic), a = 10.98 Å, V ○ = 1322.31 Å3, Z = 8, V u.c ○ = 165.29 Å3, ρX = 4.41 g/cm3, ρpycn = 4.35 ± 0.07 g/cm3; and for LaCa3CrMnO7.5 (cubic): a = 10.97 Å, V ○ = 1319.78 Å3, Z = 8, V u.c pO = 164.97 Å3, ρX = 4.89 g/cm3, ρpycn = 4.85 ± 0.05 g/cm3.