On the basis of stock and published materials, the article reveals some potential of the earth's interior of the Republic, showing the possibility of expanding the mineral resource base of existing mining enterprises by reassessing and reassessing near-surface and searching for new deposits of medium and large depths. In the future, the creation of new territorial industrial complexes in some ore regions of Kazakhstan on the basis of approved reserves and projected mineral resources is not excluded. It is noted that: for copper, in addition to copper-porphyry, there are great prospects for identifying coppery sandstones and shales; according to iron assessment, numerous geological and geophysical anomalies that have not been sufficiently or not studied at all, which have prospects for searching for deposits of both shallow, medium and large depths; It is recommended to reinterpret materials over the area of a large number of ore body outcrops, collapses and ore occurrences and consider them as criteria for prospecting for either deep deposits or placer prospecting; for bauxite raw materials - significant reserves are projected in areas of known deposits and ore occurrences, certain reserves can be identified in deposits of mining and mining chemical raw materials and, most importantly, analyze materials on depressions with coal deposits, under which large and super-large (unique) Аl2О3 resources can be concentrated, as well as pay special attention to non-bauxite aluminum raw materials, where researchers predicted billions of dollars in reserves Аl2О3. It is concluded that existing and newly created enterprises will be provided with raw materials for many years.

In the article, the influence of fluxing additives on the kinetics of the process and the yield of the alloy is investigated. It has been proven that the use of fluoride salts, in particular CaF2, in an amount from 15.0 to 18.0% contributes to an increase in the burning rate of the charge, the formation of mobile liquid slags that improve phase separation; at 6.7-8.0%, the maximum yield of the alloy occurs. The features of the use of fluxing additives in aluminothermic processes, the dependences of the charge burning rate based on the B2O3-Al system on the amount of flux were determined. The choice of a flux and the determination of its optimal amount, which provides the necessary physicochemical properties of the slag melt, which contributes to the formation of an ingot of aluminum borides, more complete phase separation, were carried out, experiments were carried out using: calcium oxide, fluorspar, potassium chlorides, potassium tetrafluoroborate in various combinations. The effectiveness of using potassium tetrafluoroborate as a fluxing additive mixed with fluorspar to increase the yield of the alloy and increase the boron content in it is analyzed.

The article presents the investigation results of the anti-corrosion activity of two-component aminocarboxylate systems based on organic acids and amines in tap water relative to steel ST3SP2-GP2. 126 systems obtained from 9 organic acids and 14 amines at concentration of 1·10-3 mol-1 were tested. Investigation was performed with steel specimen weight loss assay. It has been found that such systems have a wide range of protective effectiveness. A number of dependencies of the protective effect on the type of compounds used to obtain anticorrosive compositions have been revealed. Both aromatic and aliphatic acids and amines were tested in this work. Among them, mono-, di-, and tribasic acids, as well as amines with one and two amino groups, including N, N-substituted ones, have been also studied. The concentration dependence of the rate of inhibitors has been studied. Corrosion protection using inhibitors is one of the most promising methods that have found application in world practice. Corrosion resistance caused by inhibitors is the result of physical and chemical adsorption of ions and molecules of organic substances on the surface of metals. Various types of organic compounds are widely used as corrosion inhibitors to protect materials. The most effective inhibitors used in industry are organic compounds, which mainly contain oxygen, sulfur and nitrogen atoms and have numerous bonds in their molecules, due to which they are adsorbed on the surface of metals.

This paper presents the results of studies of the thermal properties for charge materials investigated for the smelting of a ferroalloy with titanium by the carbothermal method. The following charge materials were involved and studied in the work: ilmenite concentrate from the Shokash deposit (Aktobe region, Martuk district), high-ash coals, indispensable for domestic purposes for their intended purpose. Derivatographic analysis was used to study the thermal properties of the charge. To compare the electrical resistance of coals in order to select an effective reducing agent, in this work, measurements of the electrical resistance of high-ash coals from the Saryadyr, Borly and Ekibastuz deposit were carried out. As a result, it was found that for the smelting of a new complex titanium-containing ferroalloy, high-ash coal from the Saryadyr deposit is most applicable.

Million tonnes of tailings are formed in the world each year due to increasing mining activities along with the increase in need for raw materials. The tailings may cause important environmental problems. Therefore, tailings management is very important issue in mining operations. In recent years, with the developing technology, the new tailing disposal technologies such as paste and using geotextile materials have increased considerably. These methods have many advantages in terms of both environmental and cost reducing. Another important issue in terms of mining is the accidents and occupational health problems in underground coal mines. The problems can be described as spontaneous combustion, roof collapse, gases extraction from coal bed, and etc. These accidents have been significantly reduced with use of mining chemicals in underground mines. In this study, tailing management and mining chemicals which are very important in terms of mining applications are examined.

Based on stock and published materials, the article reveals some potential of the earth's interior of the Republic, showing the possibility of expanding the mineral resource base of existing mining enterprises by re-evaluating and re-evaluating near-surface and searching for new deposits of medium and deep depths. In the future, the creation of new territorial industrial complexes in some ore regions of Kazakhstan on the basis of approved reserves and predicted mineral resources is not ruled out. It is noted that: for copper, in addition to porphyry copper, there are great prospects for identifying cuprous sandstones and shales; according to the iron-estimation, numerous geological and geophysical anomalies are insufficiently or not studied at all, which have prospects for the search for deposits of both small, medium and large depths; in a chrome way, it is recommended to perform a reinterpretation of materials on the area of a large number of outcrops of ore bodies, collapses and ore occurrences and consider them as criteria for prospecting for either deep deposits or placers; for bauxite raw materials, significant reserves are predicted in areas of known deposits and ore occurrences, certain reserves can be identified in deposits of mining and mining and chemical raw materials and, most importantly, analyze materials on depressions with coal deposits, under which large and super-large (unique) Al2O3 resources, as well as pay special attention to non-bauxite aluminum raw materials, where the researchers predicted billions of Al2O3 reserves. It is concluded that existing and newly created enterprises will be provided with raw materials for many years.

In this work, the task was to investigate the processes of microstructure change occurring in relatively large bulk bars under the action of large plastic deformations. Such large levels of deformation are usually achievable in high pressure twisting of small flat disks, but are difficult to achieve in large bulk bars. The method of radial shear rolling makes it possible to achieve comparable ultrahigh degrees of deformation (~ 45 mm/mm) in combination with the vortex flow of the metal. Sequential rolling of the E110 zirconium alloy was carried out under extreme conditions on 2 radial shear rolling mills with a total reduction in diameter ε = 185% and a maximum accumulated deformation = 46 mm/mm. To assess the level of deformation and its distribution over the section, FEM modeling was carried out in Deform-3D. The resulting structure was studied by electron microscopy (TEM/SEM). A detailed cross-sectional study of the EBSD structure was performed with a resolution of 1 mm. A gradient structure with a predominance of an equiaxed ultrafine-grained structure was found, which was not very pronounced compared to the use of smaller deformations.

Expansion of the fields of application of molybdenum and its compounds of high purity requires the study of their various purification methods. The paper considers low-temperature chlorination of technical molybdenum dioxide, purification of the gas mixture from impurities in the filter system, condensation and dissolution of purified molybdenum oxychloride compounds in water. On filters made of tableted sodium chloride, gaseous molybdenum dioxide is purified from aluminum, iron, chromium and nickel with the formation of low-volatile compounds. The capture of silicon by this filter was not detected. Purification of tungsten on filters of granular molybdenum oxide practically does not occur. Purified molybdenum oxychloride compounds are desublimated in the form of compact and fluffy products with an underestimated chlorine content relative to the stoichiometric composition of molybdenum dioxide. Compact molybdenum oxychloride compounds dissolve in distilled water with little or no precipitation. When dissolving fluffy compounds of molybdenum, a tangible precipitate is formed, into which a significant part of the impurities passe

The paper presents the results of scientific research, which are the basis for the development of technology for producing high-carbon ferrochrome using a qualitatively new reducing agent in the charge - high-ash coal from the Saryadyr deposit. To analyze the carbothermal reduction of chromium, the method of full thermodynamic modeling (TTM) of metallurgical processes was used, implemented in a computer system using the HSC Chemistry 6 software package, in the temperature range of 600-2800 K. The thermodynamic calculation showed that sharp technological deviations in the smelting of carbonaceous ferrochromium is not observed using high-ash coal, the process proceeds evenly, with complete reduction of chromium and iron. According to the content of silicon oxide and aluminum in coal ash, it was found that it can successfully replace quartzite in the charge mixture. On the basis of thermodynamic data, experimental studies of the technological process of smelting carbonaceous ferrochromium using high-ash coal Saryadyr in the Tamman high-temperature laboratory furnace were carried out. The Tammann Resistance Furnace is a research facility designed to simulate metallurgical processes at high temperatures. In laboratory studies, prototypes of carbon ferrochrome were obtained, which meets the requirements of the Fh800 brand.

The growth in the capacity of enterprises for hot-dip galvanizing of steel products has led to the formation of large volumes of waste, which accumulate and store, occupying large areas. Further use and processing of ash is constrained by the increased content of Pb, Fe, Cu and other impurities in it, as well as the lack of rational processing technology. In this work, based on the thermodynamic analysis of the reactions of interaction of impurity metals with chlorinating reagents (CaCl2, NH4Cl), the possibility of obtaining pure zinc in the process of melting the metal component of the ash is shown. It has been established that the values ​​of the Gibbs free energy (∆G°T) of the reactions of interaction of metal-impurities with ammonium chloride in the temperature range 400...550°С are four times higher than the values ​​of ∆G°T of the reactions of interaction of metal-impurities with calcium chloride. It is shown that the use of NH4Cl as a chlorinating reagent destroys the zinc oxide film covering the surface of small drops of metallic zinc and creates favorable conditions for their enlargement. This increases the yield of zinc to the liquid metal. The influence of the consumption of CaCl2 and NH4Cl on the sublimation of lead and iron from a metallic liquid bath of zinc in the form of chlorides has been studied. It was found that when the metal component is melted together with a consumption of 2% NH4Cl based on the weight of the initial sample, the minimum content of lead and iron in liquid zinc is achieved: 0.06% Pb and 0.01% Fe. The optimal technological parameters for melting the metal component of the ash together with NH4Cl were determined: temperature of experiments 450°С; melting time 60 min; consumption of NH4Cl - 2.0% of the weight of the original sample.