scholarly journals GLOBAL NON-FERROUS METALLURGY RESOURCES MARKET

2020 ◽  
pp. 109-130
Author(s):  
Elizaveta Rastyannikova ◽  

Since the beginning of the XXI century, the raw material of non-ferrous metallurgy began to acquire new outlines. First, due to the growing demand for resources from the rapidly developing countries of Asia (China, India, South Korea), the volume of world production and international flows of both raw ore and ore dressing – concentrates have increased. Secondly, the concentration of countries that produce raw materials on the one hand and consume them on the other has increased. The article is devoted to comparative statistical analysis of international flows of raw materials of non-ferrous metals. The leading countries in the world exporting non-ferrous metal ores and countries importing them have been identified. The impact of new applications of non-ferrous metals on increasing international trade, such as the expansion of the production of batteries for electromobile and consumer electronics, the development of nuclear energy, etc., is highlighted.

2020 ◽  
Vol 24 (5) ◽  
pp. 1105-1112
Author(s):  
Anastasia Vasilkova ◽  
◽  
Alexander Byvaltsev ◽  
Olga Khmelnitskaya ◽  
Grigory Voiloshnikov ◽  
...  

The purpose of the study is to conduct experiments in order to determine the possibility of technogenic gold-bearing raw material cyanidation using ultra-low concentrations of NaCN. Experiments are carried out on the cyanidation of three samples of technogenic raw materials of different composition. The first sample consists of pyrite cinders (Au - 1.8-2.3 g/t, Ag - 13-22 g/t, Fe - 48.52%, Cu - 0.15-0.30%, Zn - 0.3-0.6%). The second sample is represented by the aged tailings of copper-zinc flotation (sample I) with the content of Au - 0.8 g/t, Ag - 7.0 g/t, Fe - 17.2%, Cu - 0.212%, Zn - 0.207%. The next object is the copper-zinc flotation tailings of a concentration plant (sample II), with the following content of Au - 1.22 g/t, Ag - 15.2 g/t, Cu - 0.13%, Zn - 0.23%. It is recommended to use an aqueous wash from non-ferrous metals with subsequent lime treatment as a preliminary processing of pyrite cinders. Cyanidation is carried out at different consumptions of reagent: from 0.075 to 3 kg/t. The experiments have shown that gold recovery in this range of NaCN consumption varies from 42.9 to 44.2%; moreover, a decrease in the reagent consumption allows to reduce the concentration of non-ferrous metal ions in cyanidation solutions. Before cyanidation sample I has also been subjected to aqueous wash to remove acid and non-ferrous metals. NaCN consumption varies from 0.25 to 2.2 kg/t. In this case the extraction of gold amounts to 36.6-46.4%. Cyanidation of tailings (sample II) is carried out in the range of 0.15-1.2 kg/t of NaCN. Gold recovery varies from 24.1 to 30.9%. The cyanidation technology of technogenic raw materials in the field of ultra-low concentrations of sodium cyanide is promising, since it provides acceptable gold recovery under low reagent consumption. For further research in the field of development of an extraction technology of valuable components, the flotation tailings of copper-zinc production (sample II) are chosen as a promising object. It is planned to carry out semi-industrial tests, calculate technical and economic indicators and develop process regulations.


2021 ◽  
Author(s):  
Sergey Trebukhov ◽  
Valeriy Volodin ◽  
Olga Ulanova ◽  
Alina Nitsenko ◽  
Farkhat Tuleutay

Abstract Residues from the municipal solid waste processed in incineration plants in European countries are an important raw material to obtain valuable components, including non-ferrous metals. State and private companies specializing in the processing of waste incineration slag as products most often receive concentrates of non-ferrous metals, which, on average, contain, in mass. %: 20÷60 Cu; 10÷30 Zn; 5÷15 Pb; ~ 1 Al; ~ 1 Sn; ~ 1 Fe, up to 50 g/t Аu and up to 3,000 g/t Ag. Concentrates are sent for processing to smelters without taking the cost of zinc into account. The paper presents the study on the separation of metallic zinc into a separate product (zinc concentrate) from the collective concentrate of non-ferrous metals by a vacuum-thermal method, the safest from the environmental point of view. The study was performed with non-ferrous metal concentrate of +0.3-0.8 mm in size, containing wt. %: 68.07 - Cu; 12.4 - Zn; 14.78 - Pb; 0.99 - Al; 1.2 - Sn; 0.15 - Fe, up to 2.0 kg/t - Ag. The material was heat treated at 800÷900℃ with the residual pressure in the system of less than 0.13 kPa. Zinc concentrate was obtained, containing more than 96% of the main component. At the same time, the Cu content increased by 14.09% in the residue from the heat-vacuum treatment. Other metals (Pb, Al, Sn) including noble metals were also concentrated in the residue. The results of the study show that it is possible to separate zinc into a separate product from non-ferrous metal concentrates containing more than 10% Zn in the initial material by the proposed method.


2021 ◽  
Vol 13 (2) ◽  
pp. 265-272
Author(s):  
Ivan ALBOROV ◽  
◽  
Fatima TEDEEVA ◽  
Olga BURDZIEVA ◽  
◽  
...  

The article presents the results of research on a comprehensive assessment of techno genic waste deposits located in the North Caucasus region, gives a brief description of the material composition of techno genic raw materials, element-by-element quantitative reserves that are part of the accumulated secondary georesources for their possible utilization, production of non-ferrous metals and raw materials for the manufacture of industrial building materials. The article considers the sanitary and ecological parameters of the functioning of man-made raw materials in complex orographic, meteorological and geographical conditions. The critical aspects of the preservation of techno genic waste deposits in the current anthropogenic conditions are identified. The risk factors for the removal of toxic and harmful geomaterials into the water area with significant harm to the flora and ichthyofaunal are identified. For a deeper assessment of the minerals contained in the extracted ore, a unified state register of techno genic waste deposits should be created, Taking into account the high fragmentation of all the above – mentioned process links at the present time , the owners, taking into account the current sanitary and regulatory requirements, must take adequate measures to ensure the regulatory and environmental requirements in accordance with the current Federal Law “On Production and Consumption Waste”. The need for complex processing of waste from mining and processing industries in the North Caucasus is also dictated by environmental aspects due to the high risk of the occupied territories (they are located in floodplain terraced areas of mountain rivers) due to the flooding of mountain rivers, including the high vulnerability of resort and recreational and balneological complexes due to the negative impact of these negative sources. The assessment of the useful components contained in the extracted ore is currently not carried out in full, and the accumulated waste from processing non-ferrous metal ores is used in small volumes.


2020 ◽  
Vol 8 (8) ◽  
pp. 1527-1544
Author(s):  
I.L. Ryabkov ◽  
N.N. Yashalova

Subject. The article focuses on market strategies of the Russian enterprises operating in the ferrous metallurgy. Objectives. The study is to analyze corporate strategies the leading ferrous metal manufacturers use in the Russian Federation, such as NLMK Group, Severstal, Magnitogorsk Iron & Steel Works, EVRAZ Group. Methods. The study interprets public financial statements and methods of the logic, intuitive and comparative analysis. Results. We analyze market strategies of the Russian metal manufacturers, determine their development priorities and competitive advantages and weaknesses. We describe the impact of various threats and measures metallurgical companies undertake to eliminate them. Conclusions and Relevance. We sorted out possible threats and exposures of the Russian metallurgic companies' economic security and traced the dynamics of their significance for 2015 to 2019. Key threats relate to policies, economy, external and internal market, regulations and laws, production, distribution and financial management, consumption, IT, social welfare and environment.


2020 ◽  
Vol 12 (24) ◽  
pp. 10454
Author(s):  
Katarína Teplická ◽  
Martin Straka

This article summarizes the arguments within the scientific discussion on the issue of using mining machines and their life cycle. The main goal of the article is to investigate the impact of a combination of mobile and stationary mining machines and their optimal distribution in the mining process to increase the efficiency of mining and processing of raw materials. The following methods of research were focused on the use of technical indicators for the valuation efficiency of the mining process: a simulation method was used for the distribution of mining machines, comparison analysis was used for the real and past state of mining machines, and a decision tree was used as managerial instrument for optimal alternatives of mining machines. The research empirically confirms and theoretically proves that optimal distribution of mining machines and machine parks is very important for mining companies. The benefit of this research for the mining company was the new location of the machines and the combination of stationary production lines and mobile equipment. The optimal layout of the machines reduced the number of conveyor belts and improved the transfer of limestone processing to mobile devices, saving time, which was reflected in transport costs. The results can be useful for other mining companies seeking to create an optimal machine park.


Author(s):  
A. M. Klyushnikov ◽  
E. N. Selivanov ◽  
K. V. Pikulin ◽  
V. V. Belyaev ◽  
A. B. Lebed' ◽  
...  

The investigating results are given for the periclase-chromite refractories' composition and structure which are in contact with the pulverized coal and gas medium in the coppersulfide smelting furnaces. The high-temperature burnt copper concentrate and the sulfur dioxide gas suspensions combined action changes the surface and deep refractories layers chemical composition, with that the impurities content reach the value in weight percent: Fe 54,0, Cu 7,2, Zn 6,4, S 1,8. The refractory's surface layer saturation with the iron and non-ferrous metals oxides decreases the porosity and gives rise to low-melting compositions and eutectics. The refractory decomposition is induced by the shelling of the refractory surface layers with the filled porous taking place in course of the heating-cooling cycling because of the phase's thermal linear expansion coefficients. When the spent refractory disposal, it is feasible to separate mechanically the surface layer for the non-ferrous metals extracting, the rest part can be used for obtaining the refractory powder of various purpose.


Author(s):  
Мунхбаяр Б.Ч. ◽  

The article describes the metalwork of the Uzuur Gyalan rock burial, popularly known online in 2016 as the «Adidas Mummy». The definitions and chemical composition of the metalware were compared with those of the time in the region. According to the results of the comparative study, the composition of the bronze mirror is very different from other bronze objects. However, bridles, saddle plaques, and ligaments are similar to the main non-ferrous metals in the region, but appear to have local characteristics. Further detailed comparative studies of the chemical composition of non-ferrous metal products in the tenth century are important steps in establishing regional cultural relations.


Author(s):  
K. Shevchenko ◽  
A. Grigorov ◽  
I. Sinkevich

In order to improve the performance properties, in particular viscosity-temperature, of boiler fuel, it is proposed to combine them with narrow fuel fractions obtained by thermal destruction of secondary polymer raw materials (low pressure polyethylene and polypropylene). When compounding grade 100 fuel oil with narrow fuel fractions, the values ​​of density are reduced to 865 (873) kg / m3, conditional viscosity to 2.50 (2.63) deg. um., pour point up to 8 (13) °C), sulfur content up to 0.17 wt%. and the lower heat of combustion increases to 43606 (43850) kJ / kg. At the same time, there is a gradual decrease in the value of the flash point to 114 (127) °C. This reduction is a negative point, which leads to increased fire safety of fuel oil during its use, storage, pumping and transport. However, the values of the flash point, according to the requirements of regulatory documentation, are within acceptable limits. That is, the value of this indicator can limit the content of fuel oil in narrow fuel fractions. It is determined that the rational concentration of narrow fuel fractions in the composition of fuel oil grade 100, is within 30% of the mass. Within these limits, there is a permissible decrease in flash point values – an indicator that characterizes the fire hazard of fuel oil during its use, storage, pumping and transportation against the background of improving other performance properties of fuel oil. The production of the proposed compound boiler fuel on the one hand allows to expand the raw material base of the process by involving in the production process secondary polymer raw materials – solid waste subject to mandatory disposal, on the other – to meet existing demand for boiler fuel by increasing its production.


Author(s):  
Б.Т. Базарова ◽  
Б.Қ. Копбулсынова ◽  
Ж.А. Аймешева ◽  
B. Bazarova ◽  
B. Kopbulsynova ◽  
...  

Батыс Қазақстан облысындағы кәсіпорындардың эволюциясы экономикалық дамудың жалпы циклдік сипатына байланысты да, әр түрлі сыртқы және ішкі факторлардың осы салаға әсер етуінен, сондай-ақ даму процесінде сөзсіз ауытқулар салдарынан ауытқуларға ұшырайды. Батыс Қазақстан облысының аймақтық агроөнеркәсіптік кешенін тұрақты дамытудың басымдықтары талдау арқылы анықталуы керек. Зерттеудің мақсаты - Батыс Қазақстан облысының агроөнеркәсіптік кешенінің тиімді және тұрақты дамуын зерттеу болып табылады. Бұл тақырыпты зерттеу кезінде статистикалық-экономикалық әдіс, талдау және синтез қолданылды. Ауылшаруашылық кешенінің жеке аймақ ретінде тұрақты дамуы да, жалпы елдің де дамуы ауылшаруашылық кешенінің тұрақты қалыптасуынсыз мүмкін емес, себебі оның түпкі өнімі қайта өңдеу өнеркәсібі болып табылады, ал оның мақсаты - талаптарына сай халықты сапалы өніммен қамтамасыз ету. Талдау көрсеткендей, ауылшаруашылық өндірісінің қазіргі жағдайы, қолайсыз факторлардың әсерінің күшеюімен сипатталады, ең алдымен табиғи факторлардың өндірісінде, жалпы өсімдік шаруашылығы өнімінің жылдық айырмашылықтарын тудырады, және өз кезегінде мал шаруашылығындағы ауытқуларға әкеледі, сонымен қатар оның әсері өңдеуші салаларда сезіледі, ал бұл өнеркәсіптің шикізаты болып табылады. Зертеу барысында 2015 жылдан бастап Батыс Қазақстан облысының аумағында ауыл шаруашылығы өнімдері өндірісінің күрт төмендегені анықталды, бұл жалпы, сондай-ақ өсімдік шаруашылығы мен мал шаруашылығы салалары бойынша да өндіріс тұрақтылығының төмендеуіне әкелді, және ол бүгінгі күнге дейін жалғасуда. Агроөнеркәсіптік кешеннің шикізат саласындағы өндіріс тұрақтылығының төмендеуі қайта өңдеу өнеркәсібі өнімдерін өндіруде ауытқулардың артуына әкеліп соқтырды, бұның нәтижесінде халыққа азық-түлік өнімдерін ұсынуда тұрақсыздық пайда болды. Батыс Қазақстан облысының АӨК-ін оның салаларының өнімділігі мен кірістілігін арттыруға бағытталған одан әрі дамыту өндірісті жаңғыртуды және қайта жарақтандыруды, оның инфрақұрылымын дамытуды және салалық кластерлерді қалыптастыруды талап етеді. Кілт сөздер: агроөнеркәсіп кешені, тербеліс, аграрлық сектор, өндіріс, халық саны, агротехника, экономика, талдау, өнімдер, өсімдік шаруашылығы. The evolution of enterprise in the West Kazakhstan region is subject to fluctuations due to both the general cyclical nature of economic development and the impact of various external and internal factors on this industry, as also fluctuations unavoidable in the evolution process. The priorities for sustainable evolution of the regional agro-industrial complex of the West Kazakhstan region should be identified through analysis. The goal of the research is to study the effective and sustainable development of the agro-industrial complex of the West Kazakhstan region. Through studies this topic, the statistical-economic method, analysis and synthesis were used. Sustainable development of the agro-industrial complex of both a particular region and the country as a whole is impossible without the stable functioning of its core - agriculture, the final product of which is used by the processing industry, whose goal is to provide the population with high-quality products in volumes that meet their requirements. Current state of agricultural production, as the analysis shows, is characterized by an increase in the influence of unfavorable factors on production, first of all natural ones, which cause annual differences in the production of gross crop production, which, in turn, convey fluctuations to the livestock industry and, as a result, affects the processing industries. it is the raw material of the industry. In the course of the study, it was found that, since 2015, in the territory of the West Kazakhstan region, there has been a sharp decline in agricultural production, which led to a decrease in the stability of production in general, and in the fields of crop and livestock production, which continues to the present. A decrease in the sustainability of production in the raw materials sector of the agro-industrial complex entailed an increase in fluctuations in the production of products of the processing industry, which ultimately resulted in the emergence of an instability in the supply of food to the population. Further development of the agro-industrial complex of the West Kazakhstan region, aimed at increasing the productivity and profitability of its industries, requires the modernization and re-equipment of production, the development of its infrastructure and the formation of industry clusters.


2019 ◽  
Vol 267 ◽  
pp. 04009
Author(s):  
Qingxin Kong ◽  
Shangde Gou

Based on the synergetics perspective, this paper constructs a composite system of non-ferrous metal futures and stock prices, using MATLAB to analyze the data of 3405 trading days from 2004 to 2018 in China. The empirical results show that non-ferrous metal stock prices are generally more orderly than futures prices in the selected period; the price discovery function of aluminum futures is worse than that of copper and zinc; and the 2008 financial crisis has an indelible negative impact on the coordination of China's non-ferrous metals futures market. Finally, this paper discusses whether there are representative metals in the non-ferrous metal market, and makes a brief summary.


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