Given in the paper are the results of calculations of the simplest quantum-chemical parameters of the structures under consideration formed in the mineral–flotation reagent system by the method of molecular mechanics (MM2). Theoretical computations on the interaction mechanism between unsaturated alcohols and gold atoms in various energy states are formulated. There were determined the causes and ascertained the regularities of selective fixation of reagents with triple bonds, which are tertiary alcohols, on the surface of liberated grains of gold and gold-containing minerals. Presented are the results of practical flotation studies, which have showed that the use of acetylene reagents allows one to selectively obtain additional gold recovery from gold-bearing ores from 2.4 to 5.0% relative to the basic flotation indicators.
{"title":"Justification of applying collectors from the class of unsaturated tertiary alcohols in flotation of gold-bearing sulphide ores","authors":"T. Yushina, S. A. Shchelkunov, O. Malyshev","doi":"10.17580/nfm.2022.01.01","DOIUrl":"https://doi.org/10.17580/nfm.2022.01.01","url":null,"abstract":"Given in the paper are the results of calculations of the simplest quantum-chemical parameters of the structures under consideration formed in the mineral–flotation reagent system by the method of molecular mechanics (MM2). Theoretical computations on the interaction mechanism between unsaturated alcohols and gold atoms in various energy states are formulated. There were determined the causes and ascertained the regularities of selective fixation of reagents with triple bonds, which are tertiary alcohols, on the surface of liberated grains of gold and gold-containing minerals. Presented are the results of practical flotation studies, which have showed that the use of acetylene reagents allows one to selectively obtain additional gold recovery from gold-bearing ores from 2.4 to 5.0% relative to the basic flotation indicators.","PeriodicalId":19653,"journal":{"name":"Nonferrous Metals","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48111173","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}
{"title":"Investigation of adhesion and diffusion activity of Cu – Mn – Ni brazing filler metal with WC – 8Co cemented carbide","authors":"V. E. Misnikov, T. A. Bazlova, I. Pashkov","doi":"10.17580/nfm.2021.02.05","DOIUrl":"https://doi.org/10.17580/nfm.2021.02.05","url":null,"abstract":"","PeriodicalId":19653,"journal":{"name":"Nonferrous Metals","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2021-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49122041","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}
{"title":"Measurement of linear velocity of laminar gas flow at different static pressure","authors":"A. Tyukin","doi":"10.17580/nfm.2021.02.02","DOIUrl":"https://doi.org/10.17580/nfm.2021.02.02","url":null,"abstract":"","PeriodicalId":19653,"journal":{"name":"Nonferrous Metals","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2021-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42112000","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}
The Energy Transition currently determines the most accurate state of developed and developing economies, reflecting major energy policies and technologies transformations [1–3]. One of this paper’s purposes is to analyze the correlations of energy transition with metals belonging to the group of rare and rare earths — as a resource necessary for this process. Based on IEA experts [4], the growth of demand for REM will face the following difficulties [5] that increase risks for the global economy: – the dominance of individual countries in value chains along their entire length from the extraction and processing of rare earth metals to the production of components (in China and the USA an internal technological chain has been established from mining to the production of final products; some countries are focused on the raw materials sector: Australia — on mining of rare earth metals, lithium, zirconium, Brazil and Canada — on mining of niobium, Chile — on mining of lithium) [6]; – negative environmental impacts from the use of certain production and technological operations; – discrepancies in forecasts regarding the demand for individual REM, which can provoke abrupt price fluctuations for both the most (neodymium) and least (cerium) in-demand REM. The indicator of world production of rare and rare earth metals for 2020 reached 815,000 tons [7]. At the same time, the world production of rare earth metals significantly lags behind the available reserves of raw materials (India, Russia, Brazil, and Vietnam). According to the Rare and Rare Earth Metals Producers and Consumers Association Non-Profit Organization (NPO), the calculated volume of mining and production of rare metals in Russia in the perspective of 2030 is projected to be 43.000 tons per year, and the same indicator for rare earth metals is at least 30.000 tons per year [8] (Fig. 1). It is expected, however, that the consumption of rare and rare earth metals will decline relative to the production levels of the same year, when the supply of metals for lithium-ion and other modern batteries increased by 16.000 and 26.500 tons, respectively (Fig. 2). As priority technologies of the Energy transition, where RM/REM can play a significant role, the follo wing can be singled out: – Solar photovoltaic technology; – Offshore and onshore wind power technologies; – Technologies for the production of hydrogen by electrolysis; Rare and rare-earth metals industry development in Russia and its influence on fourth world energy transition
{"title":"Rare and rare-earth metals industry development in Russia and its influence on fourth world energy transition","authors":"O. Zhdaneev, Ye. I. Petrov, A. Seregina","doi":"10.17580/nfm.2021.02.01","DOIUrl":"https://doi.org/10.17580/nfm.2021.02.01","url":null,"abstract":"The Energy Transition currently determines the most accurate state of developed and developing economies, reflecting major energy policies and technologies transformations [1–3]. One of this paper’s purposes is to analyze the correlations of energy transition with metals belonging to the group of rare and rare earths — as a resource necessary for this process. Based on IEA experts [4], the growth of demand for REM will face the following difficulties [5] that increase risks for the global economy: – the dominance of individual countries in value chains along their entire length from the extraction and processing of rare earth metals to the production of components (in China and the USA an internal technological chain has been established from mining to the production of final products; some countries are focused on the raw materials sector: Australia — on mining of rare earth metals, lithium, zirconium, Brazil and Canada — on mining of niobium, Chile — on mining of lithium) [6]; – negative environmental impacts from the use of certain production and technological operations; – discrepancies in forecasts regarding the demand for individual REM, which can provoke abrupt price fluctuations for both the most (neodymium) and least (cerium) in-demand REM. The indicator of world production of rare and rare earth metals for 2020 reached 815,000 tons [7]. At the same time, the world production of rare earth metals significantly lags behind the available reserves of raw materials (India, Russia, Brazil, and Vietnam). According to the Rare and Rare Earth Metals Producers and Consumers Association Non-Profit Organization (NPO), the calculated volume of mining and production of rare metals in Russia in the perspective of 2030 is projected to be 43.000 tons per year, and the same indicator for rare earth metals is at least 30.000 tons per year [8] (Fig. 1). It is expected, however, that the consumption of rare and rare earth metals will decline relative to the production levels of the same year, when the supply of metals for lithium-ion and other modern batteries increased by 16.000 and 26.500 tons, respectively (Fig. 2). As priority technologies of the Energy transition, where RM/REM can play a significant role, the follo wing can be singled out: – Solar photovoltaic technology; – Offshore and onshore wind power technologies; – Technologies for the production of hydrogen by electrolysis; Rare and rare-earth metals industry development in Russia and its influence on fourth world energy transition","PeriodicalId":19653,"journal":{"name":"Nonferrous Metals","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2021-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41908998","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}
{"title":"Indicators and regularities of hydrolytic decomposition of metastable aluminate solutions in the Na2O – K2O – Al2O3 – H2O system","authors":"V. Brichkin, A. Fedorov","doi":"10.17580/nfm.2021.02.04","DOIUrl":"https://doi.org/10.17580/nfm.2021.02.04","url":null,"abstract":"","PeriodicalId":19653,"journal":{"name":"Nonferrous Metals","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2021-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49181330","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. G. Partyko, A. I. Bezrukikh, P. Yuryev, V. Yanov
{"title":"Influence of the method of out-of-furnace melt treatment on hydrogen content in 5083 aluminum alloy","authors":"E. G. Partyko, A. I. Bezrukikh, P. Yuryev, V. Yanov","doi":"10.17580/nfm.2021.02.06","DOIUrl":"https://doi.org/10.17580/nfm.2021.02.06","url":null,"abstract":"","PeriodicalId":19653,"journal":{"name":"Nonferrous Metals","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2021-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44233714","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}
{"title":"Quantum-chemical substantiation of collecting properties of acetylene reagents in flotation of sulphide minerals","authors":"T. Yushina, S. A. Shchelkunov, O. Malyshev","doi":"10.17580/nfm.2021.02.03","DOIUrl":"https://doi.org/10.17580/nfm.2021.02.03","url":null,"abstract":"","PeriodicalId":19653,"journal":{"name":"Nonferrous Metals","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2021-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42898467","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}
{"title":"The effect of alloying elements on the interaction of boron carbide with aluminum melt","authors":"E. Prusov, S. M. Arakelian, V. Deev, P. Shurkin","doi":"10.17580/nfm.2021.01.04","DOIUrl":"https://doi.org/10.17580/nfm.2021.01.04","url":null,"abstract":"","PeriodicalId":19653,"journal":{"name":"Nonferrous Metals","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2021-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43641176","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}
{"title":"Linear induction motors for non-ferrous metallurgy","authors":"S. Kurilin, M. Dli, A. Sokolov","doi":"10.17580/nfm.2021.01.09","DOIUrl":"https://doi.org/10.17580/nfm.2021.01.09","url":null,"abstract":"","PeriodicalId":19653,"journal":{"name":"Nonferrous Metals","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2021-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42876108","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. Yushina, I. Petrov, S. A. Chernyi, A. I. Petrova
{"title":"Problems and prospects of waste processing and recycling of production containing rare earth metals","authors":"T. Yushina, I. Petrov, S. A. Chernyi, A. I. Petrova","doi":"10.17580/nfm.2021.01.03","DOIUrl":"https://doi.org/10.17580/nfm.2021.01.03","url":null,"abstract":"","PeriodicalId":19653,"journal":{"name":"Nonferrous Metals","volume":" ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2021-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43692624","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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