I. Aimbetova, R. Jimenez-Castañeda, J. Clavijo-Blanco, B. Umirov, B. Seitov
In this paper, undoped and Ti-doped V2O5 thin films were fabricated and deposited onto glass substrates using a «doctor blading» method. Then, the effects of Ti-doping on the optical properties of the thin films were investigated. Titanium doping concentration of 0.25-0.75 at.% has been investigated. After treatment in air at different temperatures, the obtained films was characterised by various techniques such as scanning electron microscopy (SEM), X-ray diffraction (XRD) and photoluminescence (PL). It was found that the as-obtained doped films possessed thermochromic properties and optical switching characters. According to optical tests, thin linings of vanadium dioxide alloyed with Ti have optical properties that are effective for application. Because of their capacity to automatically control interior solar irradiation, lower air-conditioning energy consumption, and maintain a comfortable internal thermal climate, smart windows have drawn increased interest in recent years. The doping strategy and integrating with functional coatings can regulate the properties of obtained V2O5 films.
{"title":"Investigation of optical and physico-chemical properties of titanium-doped V₂O₅ nanofilms","authors":"I. Aimbetova, R. Jimenez-Castañeda, J. Clavijo-Blanco, B. Umirov, B. Seitov","doi":"10.31643/2023/6445.17","DOIUrl":"https://doi.org/10.31643/2023/6445.17","url":null,"abstract":"In this paper, undoped and Ti-doped V2O5 thin films were fabricated and deposited onto glass substrates using a «doctor blading» method. Then, the effects of Ti-doping on the optical properties of the thin films were investigated. Titanium doping concentration of 0.25-0.75 at.% has been investigated. After treatment in air at different temperatures, the obtained films was characterised by various techniques such as scanning electron microscopy (SEM), X-ray diffraction (XRD) and photoluminescence (PL). It was found that the as-obtained doped films possessed thermochromic properties and optical switching characters. According to optical tests, thin linings of vanadium dioxide alloyed with Ti have optical properties that are effective for application. Because of their capacity to automatically control interior solar irradiation, lower air-conditioning energy consumption, and maintain a comfortable internal thermal climate, smart windows have drawn increased interest in recent years. The doping strategy and integrating with functional coatings can regulate the properties of obtained V2O5 films.","PeriodicalId":29905,"journal":{"name":"Kompleksnoe Ispolzovanie Mineralnogo Syra","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2022-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49114991","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}
In vivo ADME testing is costly, time-consuming, and puts animal lives at risk, whereas in silico ADME testing is safer, simpler, and faster. This study will use in silico methodologies from SwissADME and pkCSM as an integrated online platform for accurate and comprehensive predictions to determine In Silico ADME/T Properties of Artemisinin and its Derivatives. The investigated compounds' structures were translated into canonical SMILES format and then submitted to the SwissADME and pkCSM webserver tools, which provide free access to different properties of compounds. A compound's ADME/T characteristics are critical for future study and the results obtained will be of beneficial use for researchers. Additionally, the results of this study give great guidance and show that chemical alterations to the reference molecule artemisinin can enhance its ADMET capabilities. The webservers used in this work are free, and several comparison trials show that pkCSM and SwissADME performed are better than a number of other frequently used methods. The designing or engineering of a novel drug molecule primarily requires knowledge of the features of ADME/T of the new drug compound.
{"title":"SwissADME and pkCSM Webservers Predictors: an integrated Online Platform for Accurate and Comprehensive Predictions for In Silico ADME/T Properties of Artemisinin and its Derivatives","authors":"Khaldun AL Azzam","doi":"10.31643/2023/6445.13","DOIUrl":"https://doi.org/10.31643/2023/6445.13","url":null,"abstract":"In vivo ADME testing is costly, time-consuming, and puts animal lives at risk, whereas in silico ADME testing is safer, simpler, and faster. This study will use in silico methodologies from SwissADME and pkCSM as an integrated online platform for accurate and comprehensive predictions to determine In Silico ADME/T Properties of Artemisinin and its Derivatives. The investigated compounds' structures were translated into canonical SMILES format and then submitted to the SwissADME and pkCSM webserver tools, which provide free access to different properties of compounds. A compound's ADME/T characteristics are critical for future study and the results obtained will be of beneficial use for researchers. Additionally, the results of this study give great guidance and show that chemical alterations to the reference molecule artemisinin can enhance its ADMET capabilities. The webservers used in this work are free, and several comparison trials show that pkCSM and SwissADME performed are better than a number of other frequently used methods. The designing or engineering of a novel drug molecule primarily requires knowledge of the features of ADME/T of the new drug compound.","PeriodicalId":29905,"journal":{"name":"Kompleksnoe Ispolzovanie Mineralnogo Syra","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2022-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47113505","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}
A. Altynbekova, R. Lukpanov, D. Dyussembinov, A. Askerbekova, E. Tkach
The article presents studies of the effect of a complex modified additive on the setting time of cement paste. The work describes the method of determining the setting time of the cement paste of standard consistency, the selection of the optimal composition of the additive at different percentages of its components, allowing accelerating the setting time. In this work, the authors used a complex modified additive including alkali (caustic soda NaOH), post-alcohol bard (alcohol production waste), and hardening accelerator (gypsum) in different percentages. Performed a comparative study of the effect of additives on changes in setting time. The analysis suggests that the additive in the optimal amount leads to changes in the setting time compared with the reference sample, but within the standards. It is shown that the combined use in the composition of a complex modified additive, having well-compatible mechanisms of their influence on the processes of hydration, setting, and hardening of the cement paste, mutually complements and enhances the effect of each ingredient of the additive. Increasing the concentration of the complex modified additive in the cement paste not only affects the liquefaction process but also reduces the setting time and hardening of the cement paste.
{"title":"Effect of a complex modified additive on the setting time of the cement mixture","authors":"A. Altynbekova, R. Lukpanov, D. Dyussembinov, A. Askerbekova, E. Tkach","doi":"10.31643/2023/6445.15","DOIUrl":"https://doi.org/10.31643/2023/6445.15","url":null,"abstract":"The article presents studies of the effect of a complex modified additive on the setting time of cement paste. The work describes the method of determining the setting time of the cement paste of standard consistency, the selection of the optimal composition of the additive at different percentages of its components, allowing accelerating the setting time. In this work, the authors used a complex modified additive including alkali (caustic soda NaOH), post-alcohol bard (alcohol production waste), and hardening accelerator (gypsum) in different percentages. Performed a comparative study of the effect of additives on changes in setting time. The analysis suggests that the additive in the optimal amount leads to changes in the setting time compared with the reference sample, but within the standards. It is shown that the combined use in the composition of a complex modified additive, having well-compatible mechanisms of their influence on the processes of hydration, setting, and hardening of the cement paste, mutually complements and enhances the effect of each ingredient of the additive. Increasing the concentration of the complex modified additive in the cement paste not only affects the liquefaction process but also reduces the setting time and hardening of the cement paste.","PeriodicalId":29905,"journal":{"name":"Kompleksnoe Ispolzovanie Mineralnogo Syra","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2022-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69367072","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}
Sh.B. Zeitinova, Anuar Imashev, A.M. Suimbayaeva, R.H. Alzhanov, D. Makhmudov
As known, the main methods of developing solid minerals are open and underground methods. However, an analysis of the world’s practice of developing deposits of solid minerals also indicates the widespread use of the combined method of development in the last 50-60 years. Combined development of deposits at domestic and foreign mining enterprises is used due to the variable depth of deposits, which is typical mainly for deposits of steep and inclined fall. The essence of the combined development is that the upper horizons are developed in an open way, and the lower ones are developed underground. In such deposits, the following scheme has become widespread: the initial development of the upper section of the deposit by a shallow quarry (up to a depth of 80-100 m, sometimes more), then the construction of an underground mine, carried out in parallel with the completion of the quarry reserves. When opening sub-quarry reserves subject to underground mining, the resulting quarry space can be used. The penetration of vertical and inclined opening workings, tunnels, and exits from the berm sides or directly from the bottom of the quarry has become widespread. In parallel mining of reserves by open and underground methods, the joint use of transport workings is widely used for the delivery of ore mass from the quarry and underground mine, the placement of an underground crushing complex, auxiliary, and repair facilities in the quarry itself. In addition, the method of refining sub-quarry reserves with the opening of the underground part outside the quarry space has been widely used. After the end of open-pit mining, underground horizons are opened by capital mining workings (vertical, inclined shafts, tunnels).
{"title":"Assessment of the stability of the underworked sides and ledges of the quarry to determine the area of possible location of the shaft","authors":"Sh.B. Zeitinova, Anuar Imashev, A.M. Suimbayaeva, R.H. Alzhanov, D. Makhmudov","doi":"10.31643/2023/6445.20","DOIUrl":"https://doi.org/10.31643/2023/6445.20","url":null,"abstract":"As known, the main methods of developing solid minerals are open and underground methods. However, an analysis of the world’s practice of developing deposits of solid minerals also indicates the widespread use of the combined method of development in the last 50-60 years. Combined development of deposits at domestic and foreign mining enterprises is used due to the variable depth of deposits, which is typical mainly for deposits of steep and inclined fall. The essence of the combined development is that the upper horizons are developed in an open way, and the lower ones are developed underground. In such deposits, the following scheme has become widespread: the initial development of the upper section of the deposit by a shallow quarry (up to a depth of 80-100 m, sometimes more), then the construction of an underground mine, carried out in parallel with the completion of the quarry reserves. When opening sub-quarry reserves subject to underground mining, the resulting quarry space can be used. The penetration of vertical and inclined opening workings, tunnels, and exits from the berm sides or directly from the bottom of the quarry has become widespread. In parallel mining of reserves by open and underground methods, the joint use of transport workings is widely used for the delivery of ore mass from the quarry and underground mine, the placement of an underground crushing complex, auxiliary, and repair facilities in the quarry itself. In addition, the method of refining sub-quarry reserves with the opening of the underground part outside the quarry space has been widely used. After the end of open-pit mining, underground horizons are opened by capital mining workings (vertical, inclined shafts, tunnels).","PeriodicalId":29905,"journal":{"name":"Kompleksnoe Ispolzovanie Mineralnogo Syra","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2022-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48158820","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}
S. Kvon, V. I. Nesterova, A. Omarova, V. Kulikov, Y. Chsherbakova
The article provides a brief overview of the problems of copper production in Kazakhstan. It is shown that the main current problem of copper-smelting production is the involvement of low-grade ores of complex mineral composition. Existing technologies are focused on the processing of ore with higher copper content, accordingly, it is necessary to adjust the existing enrichment and smelting technologies. To determine the mineral composition of some samples of promising copper-bearing ores of the Republic of Kazakhstan, an X-ray phase analysis was carried out. The identification and quantitative calculation of the mineral content were carried out using the DIFFRAC.EVA and DIFFRAC.TOPAS programs. It was shown that the main copper-bearing minerals in the samples are: chalcopyrite, bornite, chalcosiderite - group 1; malachite, lapis lazuli, atacamite, pseudomalachite, brochantite - group 2. The waste rock is represented by the following minerals: quartz, muscovite (mica), chlorite (layered silicate), albite (feldspar), pyrite, calcite, sodalite (feldspathoid), and gypsum. Based on the analysis, the mineral composition of the studied samples was established and a conclusion was made about the dominant nature of the ore. It is shown that in three samples the predominant nature of the ore is sulfide, in one sample it is oxide. The obtained results of the mineral composition and nature of the ore allow us to make practical recommendations on the most effective scheme for ore enrichment and further processing.
{"title":"Study of the mineral composition of promising copper ores of the Republic of Kazakhstan","authors":"S. Kvon, V. I. Nesterova, A. Omarova, V. Kulikov, Y. Chsherbakova","doi":"10.31643/2023/6445.22","DOIUrl":"https://doi.org/10.31643/2023/6445.22","url":null,"abstract":"The article provides a brief overview of the problems of copper production in Kazakhstan. It is shown that the main current problem of copper-smelting production is the involvement of low-grade ores of complex mineral composition. Existing technologies are focused on the processing of ore with higher copper content, accordingly, it is necessary to adjust the existing enrichment and smelting technologies. To determine the mineral composition of some samples of promising copper-bearing ores of the Republic of Kazakhstan, an X-ray phase analysis was carried out. The identification and quantitative calculation of the mineral content were carried out using the DIFFRAC.EVA and DIFFRAC.TOPAS programs. It was shown that the main copper-bearing minerals in the samples are: chalcopyrite, bornite, chalcosiderite - group 1; malachite, lapis lazuli, atacamite, pseudomalachite, brochantite - group 2. The waste rock is represented by the following minerals: quartz, muscovite (mica), chlorite (layered silicate), albite (feldspar), pyrite, calcite, sodalite (feldspathoid), and gypsum. Based on the analysis, the mineral composition of the studied samples was established and a conclusion was made about the dominant nature of the ore. It is shown that in three samples the predominant nature of the ore is sulfide, in one sample it is oxide. The obtained results of the mineral composition and nature of the ore allow us to make practical recommendations on the most effective scheme for ore enrichment and further processing.","PeriodicalId":29905,"journal":{"name":"Kompleksnoe Ispolzovanie Mineralnogo Syra","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2022-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47924125","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}
E. A. Sidorina, A. Isagulov, M. Rabatuly, K. Nogaeva
Important aspects of increasing the competitiveness of domestic metallurgy and mechanical engineering are increasing the durability of thermal units and involving non-traditional, cheaper energy resources in production. One of these resources is carbon waste from the aluminum industry - electrode scrap and waste from the carbon lining of electrolyzers. The problem of their use as substitutes for solid fuels (coke coal) in the metallurgical, engineering and energy industries is fluorine- and alkali-containing salts that impregnate them, destroying the traditional lining of thermal units. The development of effective refractories resistant to fluorine- and alkali-containing corrodants (melts and gases) makes it possible to increase the competitiveness and efficiency of thermal units both through the use of cheaper energy carriers and by increasing the duration of their campaign. An important aspect is the simultaneous disposal of hazardous industrial waste and the reduction of the environmental burden on the ecosphere of the Republic of Kazakhstan. The basis for the development of new refractory materials resistant to fluorine- and alkali-containing corrodants is the analysis of the existing raw material base of the Republic of Kazakhstan and the choice of materials that make it possible to obtain aluminosilicate refractories with increased chemical resistance. In the work, the phase and chemical composition of refractory clays and kaolins of the Republic of Kazakhstan were studied, their rheological and thermophysical properties were investigated. Selected raw materials for the development of technology for the production of dense aluminosilicate refractory products.
{"title":"Study of refractory raw materials of the Republic of Kazakhstan","authors":"E. A. Sidorina, A. Isagulov, M. Rabatuly, K. Nogaeva","doi":"10.31643/2023/6445.14","DOIUrl":"https://doi.org/10.31643/2023/6445.14","url":null,"abstract":"Important aspects of increasing the competitiveness of domestic metallurgy and mechanical engineering are increasing the durability of thermal units and involving non-traditional, cheaper energy resources in production. One of these resources is carbon waste from the aluminum industry - electrode scrap and waste from the carbon lining of electrolyzers. The problem of their use as substitutes for solid fuels (coke coal) in the metallurgical, engineering and energy industries is fluorine- and alkali-containing salts that impregnate them, destroying the traditional lining of thermal units. The development of effective refractories resistant to fluorine- and alkali-containing corrodants (melts and gases) makes it possible to increase the competitiveness and efficiency of thermal units both through the use of cheaper energy carriers and by increasing the duration of their campaign. An important aspect is the simultaneous disposal of hazardous industrial waste and the reduction of the environmental burden on the ecosphere of the Republic of Kazakhstan. The basis for the development of new refractory materials resistant to fluorine- and alkali-containing corrodants is the analysis of the existing raw material base of the Republic of Kazakhstan and the choice of materials that make it possible to obtain aluminosilicate refractories with increased chemical resistance. In the work, the phase and chemical composition of refractory clays and kaolins of the Republic of Kazakhstan were studied, their rheological and thermophysical properties were investigated. Selected raw materials for the development of technology for the production of dense aluminosilicate refractory products.","PeriodicalId":29905,"journal":{"name":"Kompleksnoe Ispolzovanie Mineralnogo Syra","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2022-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69367063","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}
L. Semushkina, N. Tussupbayev, D. Turysbekov, S. Narbekova, Z. Kaldybayeva
The article presents the results of laboratory research on the possibility of flotation processing of copper-containing technogenic raw materials. Studies were performed using a sample of copper-containing tailings obtained after the processing of copper ore from the Kazakhstan deposit and a composite flotation reagent. The application of a combination of various collectors allows for raising technological indicators of flotation. The purpose of the research is the increase extraction of copper at flotation of copper-containing technogenic raw materials with the application of a composite reagent. The studied sample of tailings contains 0.23% of copper. A mixture of sodium butyl xanthate and thionocarbamate in the ratio of 1:1 was used as a composite flotation reagent. Parameters of flotation of copper-containing tailings were worked out: degree of regrinding, charges of sodium butyl xanthate, blowing agent T-92, and a composite reagent. Composite flotation reagent was fed into the flotation process of copper-containing tailings in the form of emulsion produced in a T 18 digital ULTRA-TURRAX dispersant. The optimal emulsification time of the composite flotation reagent was 1 min. Without emulsification in the composite reagent the percentage of particles smaller than 1.192 µm is 55.047%. After emulsification of the composite reagent for 1 minute, the percentage of particles smaller than 1.192 μm is 91.134%. In optimum basic mode the rough copper concentrate with a copper content of 4.2% was obtained with the extraction of 61.56%. With the use of a composite reagent, a blister copper concentrate with a copper content of 4.5% and a recovery of 66.54% was obtained. Extraction of copper increases by 4,98%.
{"title":"Flotation processing of copper-containing technogenic raw materials using a composite flotation reagent","authors":"L. Semushkina, N. Tussupbayev, D. Turysbekov, S. Narbekova, Z. Kaldybayeva","doi":"10.31643/2023/6445.05","DOIUrl":"https://doi.org/10.31643/2023/6445.05","url":null,"abstract":"The article presents the results of laboratory research on the possibility of flotation processing of copper-containing technogenic raw materials. Studies were performed using a sample of copper-containing tailings obtained after the processing of copper ore from the Kazakhstan deposit and a composite flotation reagent. The application of a combination of various collectors allows for raising technological indicators of flotation. The purpose of the research is the increase extraction of copper at flotation of copper-containing technogenic raw materials with the application of a composite reagent. The studied sample of tailings contains 0.23% of copper. A mixture of sodium butyl xanthate and thionocarbamate in the ratio of 1:1 was used as a composite flotation reagent. Parameters of flotation of copper-containing tailings were worked out: degree of regrinding, charges of sodium butyl xanthate, blowing agent T-92, and a composite reagent. Composite flotation reagent was fed into the flotation process of copper-containing tailings in the form of emulsion produced in a T 18 digital ULTRA-TURRAX dispersant. The optimal emulsification time of the composite flotation reagent was 1 min. Without emulsification in the composite reagent the percentage of particles smaller than 1.192 µm is 55.047%. After emulsification of the composite reagent for 1 minute, the percentage of particles smaller than 1.192 μm is 91.134%. In optimum basic mode the rough copper concentrate with a copper content of 4.2% was obtained with the extraction of 61.56%. With the use of a composite reagent, a blister copper concentrate with a copper content of 4.5% and a recovery of 66.54% was obtained. Extraction of copper increases by 4,98%.","PeriodicalId":29905,"journal":{"name":"Kompleksnoe Ispolzovanie Mineralnogo Syra","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2022-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69367386","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}
T. Chepushtanova, M. Yessirkegenov, K. Mamyrbayeva, Y. Merkibayev, A. Nikolosky
For the solvent extraction of copper from pregnant leach solutions, (PLS) a wide range of modern extractants is currently offered on the market, and its choice is a very important issue in the production of copper using the SX-EW (Solvent Extraction and Electrowinning) technology. The purpose of this work was to determine the optimal copper extractant for processing productive solutions of the Almaly deposit using the SX-EW. The studies were carried out with a productive solution obtained by leaching copper ores from the Almaly deposit of composition, g/dm3: 1) Cu– 0.262, Fe–17.97, SiO2–0.36. The results of copper extraction from model solutions showed that the maximum extraction of copper (94%) is observed when using the extractant 5% Acorga 5640, while the other extractants did not provide a high degree of extraction of 10% Lix984 - 93%; 10% Acorga 5640 - 91%; 10% Acorga 5910 and 10% Acorga 5747 - 85% each. According to the results of the retraction process, a high degree of copper extraction from the organic phase (90.2 and more) was ensured when using extractants of 5% Acorga 5640, 10% Lix984, and 10% Acorga 5640, the minimum - at 10% Acorga 5910 (88.2%). For the extraction of copper from the productive solution of the Almaly deposit 5% Acorga 5640 was chosen as the optimal extractant.
{"title":"English Testing of the optimum extragent for solvent-extraction of Almaly deposit copper","authors":"T. Chepushtanova, M. Yessirkegenov, K. Mamyrbayeva, Y. Merkibayev, A. Nikolosky","doi":"10.31643/2023/6445.06","DOIUrl":"https://doi.org/10.31643/2023/6445.06","url":null,"abstract":"For the solvent extraction of copper from pregnant leach solutions, (PLS) a wide range of modern extractants is currently offered on the market, and its choice is a very important issue in the production of copper using the SX-EW (Solvent Extraction and Electrowinning) technology. The purpose of this work was to determine the optimal copper extractant for processing productive solutions of the Almaly deposit using the SX-EW. The studies were carried out with a productive solution obtained by leaching copper ores from the Almaly deposit of composition, g/dm3: 1) Cu– 0.262, Fe–17.97, SiO2–0.36. The results of copper extraction from model solutions showed that the maximum extraction of copper (94%) is observed when using the extractant 5% Acorga 5640, while the other extractants did not provide a high degree of extraction of 10% Lix984 - 93%; 10% Acorga 5640 - 91%; 10% Acorga 5910 and 10% Acorga 5747 - 85% each. According to the results of the retraction process, a high degree of copper extraction from the organic phase (90.2 and more) was ensured when using extractants of 5% Acorga 5640, 10% Lix984, and 10% Acorga 5640, the minimum - at 10% Acorga 5910 (88.2%). For the extraction of copper from the productive solution of the Almaly deposit 5% Acorga 5640 was chosen as the optimal extractant.","PeriodicalId":29905,"journal":{"name":"Kompleksnoe Ispolzovanie Mineralnogo Syra","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2022-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69367393","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}
M. Rabatuly, R. Musin, V. Demin, S. Usupaev, A. Kenetaeva
This article presents possible reasons for the low productivity of wells for coal methane extraction and ways to resolve them using hydrochloric acid treatment of wells. A common reason for the low productivity of wells is a decrease in the permeability of the bottom-hole formation zone. Starch, calcium carbonate, and drilling rocks, which are part of the drilling mud, change the filtration properties of the layer during the formation of a filtration crust and lead to a decrease in the initial permeability. Hydrochloric acid treatment, during which clay rocks are dissolved, is an effective method of increasing the productivity of wells. It is used to increase pick-up and prevent contamination of the bottom-hole zone of the carbonate formation. The parameters affecting the effectiveness of hydrochloric acid treatments were considered. The results of the experience of the interaction of hydrochloric acid with a clay crust are presented and analyzed using approaches to the mechanics of multiphase media. Dependences of the rate of dissolution of clay rock on the concentration of acid solution are obtained. It is established that the treatment of the productive intermediate layer of the well with hydrochloric acid in a certain concentration, its use increases the technological and economic efficiency of wells. As a result of experimental work, it was found that hydrochloric acid with an HCL concentration above 18% has a negative effect on the internal equipment of the well when processing clay shells.
{"title":"Improving the efficiency of methane extraction from coal seams","authors":"M. Rabatuly, R. Musin, V. Demin, S. Usupaev, A. Kenetaeva","doi":"10.31643/2023/6445.01","DOIUrl":"https://doi.org/10.31643/2023/6445.01","url":null,"abstract":"This article presents possible reasons for the low productivity of wells for coal methane extraction and ways to resolve them using hydrochloric acid treatment of wells. A common reason for the low productivity of wells is a decrease in the permeability of the bottom-hole formation zone. Starch, calcium carbonate, and drilling rocks, which are part of the drilling mud, change the filtration properties of the layer during the formation of a filtration crust and lead to a decrease in the initial permeability. Hydrochloric acid treatment, during which clay rocks are dissolved, is an effective method of increasing the productivity of wells. It is used to increase pick-up and prevent contamination of the bottom-hole zone of the carbonate formation. The parameters affecting the effectiveness of hydrochloric acid treatments were considered. The results of the experience of the interaction of hydrochloric acid with a clay crust are presented and analyzed using approaches to the mechanics of multiphase media. Dependences of the rate of dissolution of clay rock on the concentration of acid solution are obtained. It is established that the treatment of the productive intermediate layer of the well with hydrochloric acid in a certain concentration, its use increases the technological and economic efficiency of wells. As a result of experimental work, it was found that hydrochloric acid with an HCL concentration above 18% has a negative effect on the internal equipment of the well when processing clay shells.","PeriodicalId":29905,"journal":{"name":"Kompleksnoe Ispolzovanie Mineralnogo Syra","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2022-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48327259","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}
A. Isagulov, V. Kulikov, S.S. Кvon, G. Michot, A. Alina
The quality of the finished casting is largely determined by the quality of the mold. Currently, there are a large number of variations in the composition of CHM (cold hardening mixes), differing both in the nature of the main component and in the nature and ratio of binders and other technological additives. As cleaning dust has a very developed surface due to technological reasons. According to various estimates, the specific surface area of gas cleaning dust is from 8, 000 cm2/g and higher. In order to verify this assumption, studies were conducted on the effect of the composition of the mixture using SCF (sand-clay forms), on some of its properties. In conclusion, the conducted studies have shown that in order to ensure the maximum performance of the technological properties of CHM, the optimal content of SCF in the mixture should be 2.0 - 10.0 wt.% in the ratio with orthophosphoric acid is not higher than 1.25.
{"title":"Studies of the influence of the composition of the CHM on the properties of the casting","authors":"A. Isagulov, V. Kulikov, S.S. Кvon, G. Michot, A. Alina","doi":"10.31643/2023/6445.02","DOIUrl":"https://doi.org/10.31643/2023/6445.02","url":null,"abstract":"The quality of the finished casting is largely determined by the quality of the mold. Currently, there are a large number of variations in the composition of CHM (cold hardening mixes), differing both in the nature of the main component and in the nature and ratio of binders and other technological additives. As cleaning dust has a very developed surface due to technological reasons. According to various estimates, the specific surface area of gas cleaning dust is from 8, 000 cm2/g and higher. In order to verify this assumption, studies were conducted on the effect of the composition of the mixture using SCF (sand-clay forms), on some of its properties. In conclusion, the conducted studies have shown that in order to ensure the maximum performance of the technological properties of CHM, the optimal content of SCF in the mixture should be 2.0 - 10.0 wt.% in the ratio with orthophosphoric acid is not higher than 1.25.","PeriodicalId":29905,"journal":{"name":"Kompleksnoe Ispolzovanie Mineralnogo Syra","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2022-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69367350","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}
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