Engineering Journal of Satbayev University最新文献

Investigation of thermal properties of charged materials for ferroalloy with titanium by the carbothermal method smelting 碳热法冶炼含钛铁合金带电材料的热性能研究

Engineering Journal of Satbayev University Pub Date : 1900-01-01 DOI: 10.51301/ejsu.2022.i5.01

N. R. Vorobkalo, E. Makhambetov, A. Baisanov, A. Abdirashit, Ye.B. Tazhiyev

引用次数: 0

Optimization of the electrothermal production of ferrosilicon from the leaching tailings of the oxidized copper ore of Almaly Almaly氧化铜矿浸出尾矿电热制取硅铁的工艺优化

Engineering Journal of Satbayev University Pub Date : 1900-01-01 DOI: 10.51301/ejsu.2023.i1.03

А. Nurpeisova, V. Shevko, D. Aitkulov, L. Kushakova

{"title":"Optimization of the electrothermal production of ferrosilicon from the leaching tailings of the oxidized copper ore of Almaly","authors":"А. Nurpeisova, V. Shevko, D. Aitkulov, L. Kushakova","doi":"10.51301/ejsu.2023.i1.03","DOIUrl":"https://doi.org/10.51301/ejsu.2023.i1.03","url":null,"abstract":"The increase in the integrated use of oxidized and mixed copper ores largely depends on the creation of a technology that allows not only to extract copper, but also to obtain marketable products from non-metallic components. The article presents the results of experimental studies of electric melting of leaching tailings of copper oxidized ore of the Almaly deposit containing by weight, %: 70.9 SiO2, 15.9 Al2O3, 2.1 MaO, 2.4 CaO, 3.6 K2O, 2.2 Na2O, 2.0 Fe2O3, 0.4 TiO2, 0.2 BaO, 0.2 CuO to obtain ferrosilicon. The studies were carried out using a single-electrode single-phase arc furnace with adjustable power, as well as the method of rotatable second-order research (Box-Hunter plan). The influence of the amount of coke and steel chips on the degree of silicon extraction into the alloy and its grade was determined. It was found that with a constant amount of coke, an increase in the charge of steel chips increases the extraction of silicon into the ferroalloy and reduces the concentration of Si in it. The influence of coke on the behavior of silicon has a lesser effect. Based on the obtained volumetric and planar images of changes in the extraction of silicon into the alloy and its composition, geometric optimization of the process was carried out. It was found that ferrosilicon grade FeSi25 with the extraction of 70-75% silicon in it is formed in the presence of 30-31.3% coke, 31.3-32.0% steel chips. To obtain ferrosilicon of the FeSi45 brand, with the extraction of 70-76% silicon, the amount of coke should be 32.2-36.3%, and steel chips 25.6-28.3% of the mass of the brags; in the presence of 24-25.2% of steel chips, 30.7-36.3% of coke, ferrosilicon of the FeSi50 brand should be smelted from the tailings.","PeriodicalId":373991,"journal":{"name":"Engineering Journal of Satbayev University","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114284416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation of phase formation during roasting of chromium pellets by the thermodynamic simulation method 用热力学模拟方法研究铬球团焙烧过程中相的形成

Engineering Journal of Satbayev University Pub Date : 1900-01-01 DOI: 10.51301/ejsu.2022.i1.05

D. Yessengaliyev, B. Kelamanov, Ye.B. Tazhiyev, T.S. Santai, Zh.M. Tastayev

{"title":"Investigation of phase formation during roasting of chromium pellets by the thermodynamic simulation method","authors":"D. Yessengaliyev, B. Kelamanov, Ye.B. Tazhiyev, T.S. Santai, Zh.M. Tastayev","doi":"10.51301/ejsu.2022.i1.05","DOIUrl":"https://doi.org/10.51301/ejsu.2022.i1.05","url":null,"abstract":"One of the ways to optimize the quality of production of chromium raw materials is to introduce slags capable of forming a slow-melting silicate compound to improve technical and economic indicators. The reason for the choice of these components is that they are used to regulate the slag mode in the process of melting ferrochrome alloy. The article presents the results of thermodynamic changes in the use of free chromium slag in the high-temperature zone and easily melting aluminosilicate slags of various compositions. Thermodynamic modeling during the firing of chrome pellets was carried out using the “TERRA” software package. Full thermodynamic modeling was carried out on the basis of a multicomponent CaO-MgO-Fe2O3-Al2O3-SiO2 system at a temperature range of 800-1800°C and at a pressure of 0.1 MPа. As initial data for determining the parameters of thermodynamic equilibrium for the actual compositions of the chromium pellet firing charges, the host rock of chromium ore (the host part of the rock) and fluxing additives (aluminosilicate material) with different ratios were used. It was found that with the following optimal content of the fluxing material: SiO2 50-55%; Al2O3 14-16%; CaO 12-14%; MgO 5-8%; FeO 5-8%, the sintering process of chrome pellets can be carried out at relatively low temperatures (1200-1300°C). As a result, phase compositions with low melting points (CaAl2Si2O8, CaMg (Si2O6), MgSiO3) were determined, where they can affect the technical and economic performance of the production of chrome pellets","PeriodicalId":373991,"journal":{"name":"Engineering Journal of Satbayev University","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121620071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study of complex processing of 10-160 mm grade chromium tailings by encapsulation in GreenCrete™ composite sulfur concrete GreenCrete™复合硫混凝土包封复合处理10-160 mm级铬尾矿的研究

Engineering Journal of Satbayev University Pub Date : 1900-01-01 DOI: 10.51301/ejsu.2022.i3.02

I.G. Bussygin, Ye.I. Kuldeyev, I.V. Bondarenko, A.V. Volkov, D.D. Khayrutdinova

{"title":"Study of complex processing of 10-160 mm grade chromium tailings by encapsulation in GreenCrete™ composite sulfur concrete","authors":"I.G. Bussygin, Ye.I. Kuldeyev, I.V. Bondarenko, A.V. Volkov, D.D. Khayrutdinova","doi":"10.51301/ejsu.2022.i3.02","DOIUrl":"https://doi.org/10.51301/ejsu.2022.i3.02","url":null,"abstract":"In recent years, methods of utilization of lumpy mineral raw materials of chromium production by encapsulation with modified sulfur from substandard grades of oil to obtain sulfur concrete have become increasingly popular. A significant amount of lumpy waste with a low content of Cr2O3 (~ 5-7% w/w) is formed when Kazakhstani chrome raw materials are processed by gravitation methods, and they can only be used as backfill in mine construction or as a component in building and road-building mixtures. Wastes from chromium deposits in Kazakhstan are located in close proximity to oil deposits in the Aktobe region, which are characterized by a high content of sulfur-containing heavy oils, which can be jointly disposed of in the form of sulfur concrete. Composite material - sulfur concrete is produced based on sulfur polymer binder - GreenCrete™ modified sulfur under GOST R 56249-2014. The possibilities of the sulfur-concrete composite formation process for the use of beneficiation tails of 10-160 mm class chromium raw material as inert materials have been studied. The characteristics of the samples obtained during the tests allow us to draw conclusions about the relatively successful encapsulation of chromium production waste in an amount of 15% by weight of the sample with the formation of sulfur concrete of the M400 class, while with a 10% content of materials for enrichment of chromium raw materials, the M500 indicator was achieved.","PeriodicalId":373991,"journal":{"name":"Engineering Journal of Satbayev University","volume":"454 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133929772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Creation of efficient technologies processing of man-made raw materials 创造高效的人工原料加工技术

Engineering Journal of Satbayev University Pub Date : 1900-01-01 DOI: 10.51301/ejsu.2022.i1.06

А.А. Ashimova, A. Bascetin, А. Bek, М.B. Nurpeisova, Z. Yestemesov

{"title":"Creation of efficient technologies processing of man-made raw materials","authors":"А.А. Ashimova, A. Bascetin, А. Bek, М.B. Nurpeisova, Z. Yestemesov","doi":"10.51301/ejsu.2022.i1.06","DOIUrl":"https://doi.org/10.51301/ejsu.2022.i1.06","url":null,"abstract":"Industrial processing of technogenic raw materials (wastes of enrichment and processing, overburden and enclosing rocks, close in composition to natural and used in traditional areas, practically does not differ from industrial processing of natural mineral raw materials. Efficient technologies development for processing of technogenic raw materials, which make it possible to obtain competitive products from it for various industries, is urgent task. Article deals with development of solution compositions for strengthening and hardening quarry slopes. Rock mass hardening in weakened areas is achieved by loading substances into cracks of array, which after hardening and setting of rock, significantly increase its resistance to shear. Loading of reinforcing substance into bulk mass is carried out under pressure, and as hardening material, we consider cement resins, silicates and polymer resins. The most common among hardening methods was cementing of rocks, when working in aquifers rocks, strengthening of unstable and disturbed massifs. With help of strengthening, it is possible to slow down processes of weathering and shedding of rocks, to prevent collapse of ledges and shedding of rocks from slopes surface. Possibility of obtaining solutions for strengthening fractured rocks and building structures has been studied. Study results of wastes of the Akshatau Mining and Processing Plant are presented and possibility of using them for solutions to strengthen fractured rocks is confirmed. Loading of hardening composition into the array is carried out under pressure, and we consider cement solution, silicates and polymer resins as hardening material. The most widespread among hardening methods is cementation during mine workings (underground structures) in fractured rocks. Significance of obtained results for construction industry lies in expansion and reproduction of raw material base of building materials industry through use of MMC waste (concentration tailings) and development of resource-saving technologies.","PeriodicalId":373991,"journal":{"name":"Engineering Journal of Satbayev University","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133084346","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Influence of fluxing additives on aluminothermic synthesis of aluminum borides 助熔剂对铝热合成硼化铝的影响

Engineering Journal of Satbayev University Pub Date : 1900-01-01 DOI: 10.51301/ejsu.2022.i5.03

I. Allan, S. Aknazarov, O. Golovchenko, O. Bairakova, Ye. Ponomareva, A. Mutushev

{"title":"Influence of fluxing additives on aluminothermic synthesis of aluminum borides","authors":"I. Allan, S. Aknazarov, O. Golovchenko, O. Bairakova, Ye. Ponomareva, A. Mutushev","doi":"10.51301/ejsu.2022.i5.03","DOIUrl":"https://doi.org/10.51301/ejsu.2022.i5.03","url":null,"abstract":"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.","PeriodicalId":373991,"journal":{"name":"Engineering Journal of Satbayev University","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128896365","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study of the influence of large shear strains and vortex flow of metal on the formation of an equiaxed ultrafine-grained structure of the E110 zirconium alloy by X-ray diffraction analysis 用x射线衍射分析研究了大剪切应变和金属涡流对E110锆合金等轴超细晶组织形成的影响

Engineering Journal of Satbayev University Pub Date : 1900-01-01 DOI: 10.51301/ejsu.2022.i6.04

N. Lutchenko, А. Arbuz, А. Kawalek, К. Ozhmegov, Ye. Panin, М. Magzhanov, F. Popov

{"title":"Study of the influence of large shear strains and vortex flow of metal on the formation of an equiaxed ultrafine-grained structure of the E110 zirconium alloy by X-ray diffraction analysis","authors":"N. Lutchenko, А. Arbuz, А. Kawalek, К. Ozhmegov, Ye. Panin, М. Magzhanov, F. Popov","doi":"10.51301/ejsu.2022.i6.04","DOIUrl":"https://doi.org/10.51301/ejsu.2022.i6.04","url":null,"abstract":"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.","PeriodicalId":373991,"journal":{"name":"Engineering Journal of Satbayev University","volume":"37 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124258053","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modeling of PVT properties within the Taisogan block on the example of the Uaz, Uaz East, Uaz North fields 以Uaz、Uaz East、Uaz North油田为例，对Taisogan区块的PVT属性进行建模

Engineering Journal of Satbayev University Pub Date : 1900-01-01 DOI: 10.51301/ejsu.2022.i3.07

G. Kokymbayeva, E. Ermekov, R. Dosniyazov

{"title":"Modeling of PVT properties within the Taisogan block on the example of the Uaz, Uaz East, Uaz North fields","authors":"G. Kokymbayeva, E. Ermekov, R. Dosniyazov","doi":"10.51301/ejsu.2022.i3.07","DOIUrl":"https://doi.org/10.51301/ejsu.2022.i3.07","url":null,"abstract":"The availability of reliable data on the PVT properties of reservoir fluids plays a leading role in calculating the reserves of oil and gas reservoirs, estimating the oil recovery factor, well testing, numerical reservoir modeling and for making informed decisions in field development design. In practice, the results of field, laboratory and theoretical studies are used simultaneously to substantiate the properties of natural hydrocarbon mixtures. At each of the noted stages, specialists strive to increase the reliability of the data obtained and develop methods for their interpretation. Determining the properties of reservoir fluids of an oil field is a prerequisite for the effective use of various methods of influencing the bottomhole zone of wells, selection of equipment for well operation. The properties of reservoir fluids are determined by various thermobaric conditions and change depending on the current state of the reservoir and the characteristics of reservoir pressure changes. All known methods for determining the properties of formation fluids are divided into two groups: experimental and computational. Each of the groups has both advantages and certain disadvantages.","PeriodicalId":373991,"journal":{"name":"Engineering Journal of Satbayev University","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114797136","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A method for assessing the reliability of the planned consumer quality of ores with considering the calculated accuracy of their average content 一种考虑平均含量计算精度的矿石计划消费质量可靠性评估方法

Engineering Journal of Satbayev University Pub Date : 1900-01-01 DOI: 10.51301/ejsu.2022.i4.05

А. Kurmankozhaev

{"title":"A method for assessing the reliability of the planned consumer quality of ores with considering the calculated accuracy of their average content","authors":"А. Kurmankozhaev","doi":"10.51301/ejsu.2022.i4.05","DOIUrl":"https://doi.org/10.51301/ejsu.2022.i4.05","url":null,"abstract":"The method consists in ensuring the reliability of the planned consumer quality of ores by using non-parametric properties of the variation of unevenness, variability and uncertainty of contents, which predetermine the weighted average value of the average, according to which qualimetrically averaged aggregate and frequency integrity of contents is reproduced. The method is based on the concept of reproducing qualimetrically averaged sets of contents, zonal based on the nature of their distribution and the uniformity of their values, using the qualimetric geoindicator property of the modal concentration of ores. The fundamental difference of the method is in achieving the reliability of the planned average grade - \"by areas of qualimetrically averaged grades\" instead of the traditional one - \"by grouped point samples\", in which stabilization of the quality of ores is achieved before mining. Based on the results of qualimetric averaging of grades, qualimetric maps are compiled containing geological zones of high-quality and ordinary ores, and ores with modal grades, and consumer quality calculation blocks. In-situ-experimentally confirmed the feasibility of the minimum limits of deviations of the contents of the initial production coming to the processing and processing processes from the planned ones for the extraction sites, achieved when extracting the reserves of the reproduced sites of ordinary, high-quality, high-quality and near-edge ores. Geological and geometric bases are being created for the modernization of the processes of exploration, calculation, preparation and excavation of reserves, the costs of technical averaging are reduced, and losses of metals in mining waste and processing tailings are eliminated.","PeriodicalId":373991,"journal":{"name":"Engineering Journal of Satbayev University","volume":"2551 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128757462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Petrography of secondary quartzites at the Alkamergen deposit (Pavlodar region) Pavlodar地区Alkamergen矿床次生石英岩的岩石学特征

Engineering Journal of Satbayev University Pub Date : 1900-01-01 DOI: 10.51301/ejsu.2022.i2.06

A. Bekbotayeva, A. Baibatsha, D. Shikhov, A. Baisalova, G. Omarova, A. Duchmal-Chernikevich

引用次数: 0