Metallurgicheskaya i gornorudnaya promyshlennost, №5, 2018最新文献

{"title":"AUTOMATIC CONTROL FORMATION OF THE ULTRASONIC OSCILLATIONS INTENSITY IN THE FLOTATION PROCESS","authors":"V. Morkun, N. Morkun, A. Pikilnyak","doi":"10.33101/S005-4789456","DOIUrl":"https://doi.org/10.33101/S005-4789456","url":null,"abstract":"Purpose. The method development of adaptive control of the high-energy ultrasound intensity and frequency, which are formed by means of an ultrasonic phased array.\u0000Methodology. The problem of automatic control automation for the ultrasonic oscillations intensity in flotation process using the PID controller, Lyapunov's and gradient methods based on the adaptive control system with a reference model, self-tuning regulator based on the Kaczmarz projection iteration method is considered. The method of adaptive control of the high-energy ultrasound intensity at a given point in space, which is generated by an ultrasonic phased array based on the successive orthogonal projection of the approximation on a hyperplane is developed.\u0000Findings. The computer simulation results of the ultrasonic exposure on the pulp flow using adaptive and PID regulators with a given intensity and time of the transient process with a linearly increasing pulp flow rate are shown. The developed method is implemented in software and allows to maintain the desired intensity of ultrasound exposure at a given point of flotation machine space with high accuracy.\u0000Originality of the work lies in the fact that a method of adaptive control of the intensity of high-energy ultrasound at a given point in space, formed by using an ultrasonic phased array based on a sequential orthogonal design of the approximation on the hyperplane, has been developed, with error not exceeding 1.2%.\u0000Рractical value consists in the development of algorithms and programs for adaptive control of the parameters of the gas phase of the pulp in the process of flotation.","PeriodicalId":220770,"journal":{"name":"Metallurgicheskaya i gornorudnaya promyshlennost, №5, 2018","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128756250","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":"TRANSITION TO THE BASIS OF THE CONCEPT OF LEAN PRODUCTION AS A SUCCESSION OF NEGATIVE TRENDS AT MINING ENTERPRISES AND METALLURGICAL COMPLEX OF UKRAINE\u0000(MESSAGE 2)","authors":"M. Myronenko","doi":"10.33101/S005-4568345","DOIUrl":"https://doi.org/10.33101/S005-4568345","url":null,"abstract":"Purpose. Analysis of the features of the transition to the concept of lean production of enterprises of the mining and metallurgical complex (MMC) of Ukraine, located on the territory of the Dnipropetrovsk region. Prospects for the implementation of these approaches to 2020.\u0000Methodology. While writing the article, the following methods were used: questioning and interviews at the stage of collecting primary information, as well as the method of comparative analysis in justifying recommendations regarding the prospects for implementing the concept of lean production for the period up to 2020.\u0000Findings. The article analyzes the transition to the principles of the concept of lean production on the example of two enterprises of the MMC of Ukraine, geographically located within the Dnipropetrovsk region. The prospects for further implementation of the tools of the Lean Production concept for the period up to 2020 are considered. \u0000Originality. The importance of the practical application of methods and tools of the theory of the concept of lean manufacturing, in particular of the 5 C system and of the Submission of Proposals was confirmed. The necessity of applying various methods of auditing production activities was proved. This will optimize costs within the organization and affect the level of competitiveness of its products.\u0000Practical value. Understanding the fact that the company's profit is only an external manifestation of the correct management decision to minimize losses within the company will allow enterprises of the mining and metallurgical industry of Ukraine as a whole to progress.","PeriodicalId":220770,"journal":{"name":"Metallurgicheskaya i gornorudnaya promyshlennost, №5, 2018","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129237328","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":"Improving the efficiency of leaching of metals from ore raw materials","authors":"V. Lyashenko, F. F. Topolnyi, G. Kovalenko","doi":"10.33101/S005-3587967","DOIUrl":"https://doi.org/10.33101/S005-3587967","url":null,"abstract":"Purpose. Improving the efficiency of leaching of metals from ore raw materials by justifying the parameters of underground mining and the introduction of integrated technology in combination with geotechnology, ensuring the rational use, protection of the subsurface and the environment during the development of reserves by combined geotechnological methods.\u0000 Metology. The methods of generalization, analysis and evaluation of practical experience and scientific achievements in the field of geotechnology, theory and practice of explosive destruction of solid media, continuum mechanics, mathematical statistics, as well as research techniques of wave processes according to standard and new techniques of the leading experts of the world's advanced mining countries are described.\u0000 Findings. The factors determining the leaching efficiency of metal ores, environmental and seismic safety are established and the parameters of the explosion are justified taking into account the size of an average linear piece of exploded ore mass, the area of an emanating surface and the seismic safety of protected objects (industrial buildings, residential buildings, the Ingul river underflow, Kropivnitsky, etc.).\u0000 Originality. Recommended empirical dependence for the prediction of the oscillation speed on the reduced mass of charge per deceleration step in the explosive preparation of ore for underground leaching of metals for the field conditions of the form y = a ∙ b also the value of the permissible displacement rate of the soil at the base of the protected objects = 0.4 cm / s.\u0000 Practical value. When non-conforming ores of deposits are involved in the production, their raw material base at operating mines can be increased 1.4–1.6 times.\u0000Keywords: mining technology, underground mining, metal leaching, environmental safety, efficiency.","PeriodicalId":220770,"journal":{"name":"Metallurgicheskaya i gornorudnaya promyshlennost, №5, 2018","volume":"160 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122898290","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":"ON THE PROCESSING OF HEMATITE RAW MATERIALS AT THE KRYVOROZHSK MINING AND PROCESSING PLANT OF OXIDIZED ORE ON TECHNOLOGY OF DIRECT RECOVERY ITmk3","authors":"P. Loboda, Younes Razaz, S. Grishchenko","doi":"10.33101/S005-59768574","DOIUrl":"https://doi.org/10.33101/S005-59768574","url":null,"abstract":"Purpose. To substantiate the efficiency of processing hematite raw materials at the Krivoy Rog Mining and Processing Plant of Oxidized Ores using the direct reduction technology itmk3®.\u0000Metodology. Analysis of the results of the itmk3® direct restoration technology developed by Kobe Steel Ltd., Japan and Hares Engineering GmbX, Austria, with a view to using it to process Krivbass hematite ores into granulated iron (so-called “nuggets”).\u0000Findings. The involvement in the production of hematite ores (oxidized quartzite) of Krivbass with high iron content, but with low magnetic properties for their processing into granular cast iron is grounded.\u0000Originality. The use of itmk3® direct reduction technology from Kobe Steel Ltd., Japan and Hares Engineering GmbH, Austria for the processing of Krivbass hematite ores into granular cast iron is justified for the first time.\u0000Practical value. The efficiency of the use of hematite ores (oxidized quartzite) has been substantiated, which can significantly reduce the costs in the mining cycle for the economical production of metallurgical products.","PeriodicalId":220770,"journal":{"name":"Metallurgicheskaya i gornorudnaya promyshlennost, №5, 2018","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125143237","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":"Исследование отката гильзы в процессе Пилигримовой прокатки","authors":"V. Balakin, V. D. Dobryak, Y. Ugryumov","doi":"10.33101/S005-2035580","DOIUrl":"https://doi.org/10.33101/S005-2035580","url":null,"abstract":"Цель. Исследование влияния основных факторов, влияющих на откат гильзы валками пилигримового стана, что в конечном счете оказывает влияние на синхронизацию работы системы «валки — подающий аппарат» и снижение производительности пилигримового стана, а также не стабильную с ударами в валки гильзы работу подающего аппарата и главной линии стана.\u0000 Методика. Использование метода баланса работ всех сил, в том числе силы инерции, действующих на подвижные части подающего аппарата вместе с гильзой и дорном после выхода гильзы из контакта с валками.\u0000 Результаты. В статье приведены результаты теоретических и экспериментальных исследований влияния основных факторов на откат гильзы. С помощью использованной методики дана количественная и качественная оценка влияния исследованных факторов на процесс торможения и косвенного влияния их на степень синхронизации работы подающего аппарата и валков. \u0000 Научная новизна. Установлены основные факторы, влияющие на величину отката подвижных частей подающего аппарата вместе с гильзой и дорном в процессе пилигримовой прокатки, в том числе на величину отката по инерции. Величина пути отката по инерции для конкретных условий при коэффициенте трения скольжения равном 0,2 составила 45мм, что согласуется с данными, полученными на пильгерстане 5-12\" с помощью видеосъемки. Исследованиями установлено, что при увеличении давления в воздушной камере на 20% по отношению к заданному, путь торможения по инерции уменьшается на 16,6 %, а при уменьшении этого давления на 20%, путь торможения увеличивается на 21,8%.\u0000 Практическая значимость. Результаты проведенных теоретических и экспериментальных исследований могут быть использованы при разработке автоматической системы синхронизации «валки — подающий аппарат», что позволит повысить производительность за счет стабилизации подачи гильзы в валки в каждом цикле прокатки, а также стабильность и надежность работы пилигримового стана без ударов гильзы в валки. Ил. 3. Табл. 2. Библиогр.: 6 назв.\u0000 Ключевые слова: труба, гильза, пилигримовый стан, дорн, подающий аппарат, синхронизация, подача, производительность, скорость прокатки, откат.","PeriodicalId":220770,"journal":{"name":"Metallurgicheskaya i gornorudnaya promyshlennost, №5, 2018","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130430441","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":"Expansion of the use of dispersed products of concentrating and metallurgical enterprises. Message 1","authors":"P. Pilov, L. Gorobets, I. V. Verhorobina","doi":"10.33101/S005-489604","DOIUrl":"https://doi.org/10.33101/S005-489604","url":null,"abstract":"Purpose. Justification of the directions of efficient processing by dispersing products and waste of the concentrating and metallurgical industries.\u0000The technique. Investigation of materials by the method of jet dispersion, evaluation of indicators of dispersion and surface activity of powders by the potentiometric method and on the device of the company MALVERN (Great Britain).\u0000Results. The methods and modes of dispersion in jets, the ranges of rational dispersion of products are theoretically substantiated and confirmed by industrial experiments, the indicators and directions for the use of gas-jet technology are established.\u0000Scientific novelty. Produced a reasonable choice of technological options for the use of gas-jet plants for the efficient processing of raw materials and waste processing and metallurgical industry of Ukraine.\u0000Practical significance. According to theoretical developments, experimental verification and accumulated production experience, a number of technological applications of activated highly dispersed materials are recommended.","PeriodicalId":220770,"journal":{"name":"Metallurgicheskaya i gornorudnaya promyshlennost, №5, 2018","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128411629","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":"Experimental precision study of types and of the chemical composition of nonmetallic inclusions in radial section of the railway axis by the method of the electronic microscopy and x-ray spectral microanalysis","authors":"M. Gasik, Y. V. Klimchik, L. I. Gasik, A. Gorobets, D. Chaika, Y. N. Bortnikov","doi":"10.33101/S005-2223344","DOIUrl":"https://doi.org/10.33101/S005-2223344","url":null,"abstract":"Purpose. Investigation of the structure and composition of non-metallic inclusions in the radial section of the draft railway axis obtained from continuously cast billets.\u0000Methodology. Studies were conducted on samples of steel EA1N using electron microscopy of X-ray spectroscopy analysis.\u0000Results. It has been established that during cooling of the melt and crystallization of the metal of a continuously cast billet, inclusions close in composition to quasi-equilibrium states of binary and ternary oxide systems are formed.\u0000Originality. The structures and composition of heterophase inclusions formed in the central part by spinel MgO * Al2O3 with the (Ca, Mn) S sulfide phase shell are identified.\u0000Practical value. The results of the study determine the modes of deoxidation and alloying of the axial metal during out-of-furnace treatment at LF and VD.","PeriodicalId":220770,"journal":{"name":"Metallurgicheskaya i gornorudnaya promyshlennost, №5, 2018","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121723723","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":"Accumulated experience of using composites in the practice of repairing industrial equipment","authors":"A. Ishchenko, D. A. Rassokhin, D. L. Kakareka","doi":"10.33101/SOO5-0897543","DOIUrl":"https://doi.org/10.33101/SOO5-0897543","url":null,"abstract":"Purpose. Development of recommendations on repair and restoration of details of the metallurgical equipment by a method of application of composite materials\u0000Methodology. Description of practical developments on the restoration of equipment operated in difficult conditions at metallurgical enterprises\u0000Findings. Technologies have been developed to restore the worn surfaces of metallurgical equipment \u0000Originality. It has been established that when restoring bearing surfaces, in particular bearings, to increase the durability of the composite layer, it is necessary to use “beacons” that provide precise positioning of the part (bearing ring) and are an additional support surface when impacting the restored layer. The conclusion of the composite material in a closed volume provides an increase in its carrying capacity.\u0000Practical value. The developed technologies allow to increase the durability of reconditioned equipment without increasing the cost of repairs. Il 3. Bibliography: 8 titles.","PeriodicalId":220770,"journal":{"name":"Metallurgicheskaya i gornorudnaya promyshlennost, №5, 2018","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121678357","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":"Evaluation of methods for improving the efficiency of the hydro-technical systems functioning at mineral-metallurgical combines","authors":"B. Blyuss, S. Dziuba, E. Semenenko, M. M. Liakh","doi":"10.33101/S005-2343455","DOIUrl":"https://doi.org/10.33101/S005-2343455","url":null,"abstract":"Purpose. Justification of hydraulic systems management methods of mining and metallurgical plants, taking into account indicators and comparative analysis and on the basis of pipelines rational parameters and slurry concentrates.. Methodology. Analysis of modern methods for assessing the efficiency of operation of hydraulic systems of enterprises in the mining and metallurgical industry allowed us to determine the promising directions for the use of various chemical reagents in order to reduce hydraulic resistance during transportation of hydraulic mixtures in mineral processing technologies. Findings. The rational parameters of the operation of hydraulic systems of mining and smelting plants, namely: the diameter of the pipeline and the concentration of the slurry for a given amount of transportation to ensure a minimum of reduced costs for the evaluation period and taking into account the usage of chemicals which were used to improve the efficiency of pipeline transport. Originality. Based on the analysis of methods for assessing the effectiveness of mineral processing technologies. It is determined that the most rational in the totality of technologies to improve the efficiency and reliability of the hydrotransport complex is the use of polyethylene pipes, as well as additives to the carrier fluid of hydrodynamically active substances. Practical value. It consists in the improvement of methods for calculating rational parameters and modes of operation of hydraulic systems, allowing to determine the value of the velocity and concentration of the slurry, providing a minimum of reduced costs for the estimated period. These methods are adapted for the case of using polyethylene pipes, taking into account additives to the carrier fluid of hydrodynamically active substances, taking into account the reduction of reduced costs due to diagnosing the technical condition of the equipment, as well as allowing to optimize maintenance costs.","PeriodicalId":220770,"journal":{"name":"Metallurgicheskaya i gornorudnaya promyshlennost, №5, 2018","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131449953","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":"A GROUND OF BOOTY OF COPPER IS FROM EFFLUENTS","authors":"A. Nester","doi":"10.33101/S005-4968296","DOIUrl":"https://doi.org/10.33101/S005-4968296","url":null,"abstract":"Purpose. The modern state with the booty of copper ores andproduction of copper are considered in Ukraine.The task of the article is to carry out a forecast of soil contamination with slurries of printed circuit boards and electroplating. This allows to improve the ecological safety of territories of enterprises producing boards and electroplating. \u0000The methodology. The article uses mathematical methods of calculation according to the theory of porous media physicochemical hydrodynamics. This process is described by the equation of movement and conservation of mass of matter in vertical shifts. \u0000Findings. The main result of the given work is to improve the method for determining consequences of soil contamination by sludge from PCB and electroplating producing shops. \u0000The originality. To avoid the accumulation of sludge in the territory of enterprises we propose to use the technology of spent etching solution regeneration where the selected metal is used as secondary raw materials for copper production and recovered solution is reused for etching printed circuit boards. This way almost no sludge is generated, or their quantity is negligible. \u0000Practical implications. The article helps to understand the harmfulness of sludge storage in the enterprise and shows the working method to develop recycling technologies and reuse etching solution during etching PCB.","PeriodicalId":220770,"journal":{"name":"Metallurgicheskaya i gornorudnaya promyshlennost, №5, 2018","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121138238","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}