V. Yu. Bazhin

• Head of Department at Saint Petersburg Mining University

In this work, we aim to obtain a high-alloy product of the Al-Fe-Si-Mn system from scrap and metallized waste, as well as to determine the optimal technological mode of melting for increasing the yield of finished products during complex processing of the melt. The study involved the following methods: X-ray fluorescence (XRF), spectral, X-ray stru...

V. Yu. Bazhin, Tran Duc Hieu, D. V. Makushin, K. A. Krylov. Influence of temperature regime of the combined process of casting and rolling of strips from high-alloy aluminium alloys. Non-ferrous Metals. 2024, №2, Vol. 57, 45–51. DOI: 10.17580/nfm.2024.02.07 In aluminum foil production, challenges arise in the real-time monitoring and control of te...

As part of the development of critical technologies, it is necessary to search for alternative replacement of components in the compositions of aluminum ligatures, including known modifying additives of scandium and yttrium with other rare-earth and rare elements. Aluminum ligatures with rare-earth metals are widely considered in many scientific pa...

One of the characteristic properties of organofluorine compounds is their low surface energy. In this regard, surfactants containing perfluoroalkyl groups, as a rule, are much more effective than their nonfluorinated analogues. The unique character of fluorinated surfactants is also determined by their pronounced oleophobic properties. Surfaces tre...

This study aims to solve the problem of decarbonization of industrial emissions from metallurgical furnaces using the process of carbothermic reduction of silicon in ore-thermal furnaces (OTFs) as an example. The methods used for cleaning the exhaust gases cannot completely ensure the processing of carbonaceous emissions. We propose a method of usi...

A fully dense ZrB2–30 vol% SiC composite containing 5 wt% Si3N4 and 4 wt% phenolic resin (1.6 wt% carbon) was sintered using the hot-pressing route under the external pressure of 10 MPa at 1900 ºC for 2 h. The microstructural evolution and interfacial phenomena were scrutinized using advanced microscopy facilities such as high-resolution transmissi...

n the production of non-ferrous metals, it is difficult to monitor technological parameters and to account for the material balance of the main and auxiliary components which leads to significant losses of raw materials and electricity. The metals industry is characterised by the need to account for, reduce and recycle large volumes of technogenic...

The utilization of modern automated control systems in copper cathode production offers the opportunity for remote access to control and regulate the electrolytic process parameters. This, in turn, enhances production efficiency while reducing energy costs. The significant parameters in copper electrolytic refining encompass the temperature and com...

The results of research into the formation of ultrapure silicon carbide by propagating synthesis are described in the paper. This synthesis provides a reduction of process time and energy costs. It is established that the main structural transition is caused by phase transformations and polymorphism phenomenon in silica (α-SiO2 to β-SiO2 transition...

Production of metallurgical silicon is strategic and determines the development of many key industries. The main task of resource saving in silicon production is to reduce the mass of silica fume emissions in the expendable part of the balance. In modern conditions the development of system of charge balance control in metallurgical silicon product...

The aim was to develop a procedure for obtaining an electrode paste of needle coke in case of thermophysical action in the extruder circuit to produce graphitized carbon electrodes with the required structure and properties for thermal furnaces. To study the properties and composition of electrode pastes and electrodes, X-ray powder diffraction, el...

This study is aimed at improving the efficiency of monitoring and automated control over the technological state of electrolytic cells during copper refining using the recognition and identification of short circuits between the electrodes. Experimental works were performed on a laboratory bench consisting of two cells connected in series to the el...

The activities of the informal nickel group of the Leningrad Mining Institute during the first five-year plans and the 2nd World War played a key role in organizing in the USSR the production of high-quality additives for armor and shell steels from any substandard ores and semi-finished products without any foreign help by developing original tech...

The paper describes the development of an automated digital system for monitoring and controlling the thermal regime of gas reverberatory furnaces for fire refining of nickel based on a mathematical model, which accounts for the control of medium-pressure burners. The specific features of the fuel combustion process and accompanying chemical reacti...

In this paper, the formation and development of Vietnam’s metallurgical industry and the recent crisis are presented. The cause of the underdevelopment is backward production technology and slow transformation to meet the increasing requirements of the market. The paper also clarifies the development of automatic control system (ACS) and the produc...

The reduction kinetics of serial phase transitions of iron oxides during reduction to a metallized state with different modes of technical hydrogen supply has been studied and substantiated. The results of the pellets formation when 3-5 % molasses is added to the red mud as a binding reagent are presented. The dependences of the reduction rate of i...

The aim of this paper is to define and select stable zones in the off-gas duct of an ore-thermal furnace using a mathematical model. This is needed to increase the effectiveness of exhaust gas composition control in metallurgical silicon production. Methods. The goals of this study were achieved by means of computational fluid dynamics. A model wit...

The work aims to develop digital control and management systems of copper electrolytic refining processes when addressing energy efficiency issues. Thermal imaging scanners can be used to monitor the process state of an electrolytic cell. In this regard, the experience in the automation and control systems of OJSC Novgorod Metallurgical Plant was c...

Aluminum master alloys with rare earth metals are widely studied by many scientists around the world, but research on the production of Al-Er master alloys is still limited. The purpose of this work is to study the microstructure parameters of aluminum-erbium master alloys obtained by metallothermic reduction of salt mixtures containing erbium oxid...

We proposed a new approach to solving the problem of operational analysis and medium-term forecasting of the greenhouse gas generation (CO2, CH4) intensity in a certain area of the cryolithozone using data from a geographically distributed network of multimodal measuring stations. A network of measuring stations, capable of functioning autonomously...

Transportation and refining of heavy metal-bearing oil are associated with the problems of localized destruction of metal structures and elements due to corrosion. In the process of equipment operation, it was revealed that premature failure of steel coils of heating tube furnaces at oil refineries and petrochemical plants was associated with insuf...

Composite materials are an important class of economical structural materials with unique properties that expand the scope of mechanical engineering in various industries. One of the most interesting metal composite materials is metal structures with low cost of reinforcement and availability for mass production. Due to the development of the struc...

Red mud (RM), the by-product generated during the alumina extraction process, is considered a valuable secondary raw material, since iron (20-54%) represents its major constituent. Accordingly, the suitability of recycling this RM in the sintering process of Egyptian iron ore was studied. The effect of adding different amounts of RM to the sinter c...

In this work, we studied the effect of microwave treatment of red mud briquettes containting more than 48% of Fe on the process of iron reduction under various conditions of heat treatment. Research samples were collected from red mud formed during the production of alumina from bauxite at the Ural Aluminum Smelter. The chemical composition of mud...

Combined refractory materials due to their physical and mechanical properties and high stability have been widely used in recent years in metallurgical assemblies with sudden changes in temperature regime, as well as during prolonged downtime or temporary shutdown. Silica refractory can be prepared from clay, chamotte with the addition of silicon p...

This paper continues a series of publications on the history of Russian silver 1 Rouble coins and the contribution of the Saint Petersburg münzmeisters, who graduated from the Mining University, to the coin business. The study focused on silver 50 Kopecks coins of the 1922–1924ss made by the former münzmeister of the Saint Petersburg Mint Petr Laty...

This paper considers the key control issues related to non-adjustable parameters in the production of metallurgical silicon in ore thermal furnaces. A series of experiments has been conducted to confirm the possibility of introducing the electrode off-position control. Thus, additional control parameters were introduced in the process control syste...

The purpose of this article is study and identification of the most promising trends and engineering solutions in order to improve resource saving and energy efficiency in the production of corundum on the basis of the conducted patent review on melting improvement and optimization. The ways to optimize the corundum production are considered in thr...

In recent years, due to climate change environmental sustainability programs have been created that require the search for alternatives to reduce air emissions and reduce fuel consumption. The combustion industry is looking for an effective solution to increase the life cycle of its equipment and improve combustion efficiency without neglecting saf...

Cementing of casing strings is one of the most important processes of well construction for the exploration and exploitation of oil, gas and gas condensate fields. Despite more than half a century of research and development of grouting mortars, they are not able to provide high strength and good adhesion to the casing string. The article considers...

According to the top-priority trends and challenges in the mineral sector, and as per the mining science strategy, it is highly critical to arrange enhanced control, prediction and safety of production objects and their functioning for the preservation of automation sustainability. Improved control of databases, regulatory bonds, management, logist...

Iron and steel industry is one of the industrial branches making substantial input in provision of economic growth in Russian Federation; in this connection, innovation development of the metallurgical industry is rather important. The patent researches, in their turn, allow to get statistical data about the patents that are indicators of technolog...

In the presented article, a differential thermal analysis was carried out and the temperatures of thermal effects were established that arise during the reduction of neodymium from a technological salt mixture KCl-NaCl-CaCl2-NdF3 with a magnesium-zinc alloy. The results of experimental studies on the reduction of neodymium from a fluoride-chloride...

Being the climax of the mining science, metallurgy has always played an important role at the Saint Petersburg Mining University, where a community emerged over the past years comprised of graduates and staff who chose metallurgy as the area of their professional interest and application. The history of the community is yet to be studied in all det...

The Bessemer process enabling to produce high-quality steels was implemented at steel mills of the Urals region more than 200 years ago. At the beginning of the 20th century, the process was modified by scientists from the Mining Institute and was then adopted by copper and nickel alloy producers. The converter process became one of the key process...

A reverberatory furnace for nickel refining is an open flame furnace that comes from a burner, which uses natural gas as fuel; and which working temperatures vary from 1450°C to 1550°C. In reverberatory furnaces there is a waste of heat generated by the burners. If we in time use an adequate recirculation of the combustion gases from the flame we c...

Composite materials based on aluminum are used in various fields of metallurgy and, in particular, for the production of high-strength products whose properties, such as low density, low coefficient of thermal expansion, and thermal stability, satisfy basic requirements imposed in the course of their operation. At present, we observe rapid developm...

In the current situation of the mineral resources with a general depletion of ferrous and non-ferrous ores, it becomes necessary to search for new and alternative resources for obtaining metals and their compounds from available resources. Taking into account that ferrous and non-ferrous ores are practically lacking in some foreign countries, espec...

Modern industrial methods of producing hydrogen almost exclusively use fossil fuels, like natural gas, crude oil or coal, as raw materials. Methods such as steam reforming or partial steam oxidation to produce hydrogen from fossil hydrocarbons. This process chemically separates the carbon which is then converted to carbon monoxide (CO). These metho...

In this paper the problems of beneficiation of lateritic nickel ores of the Cuba Republic and passing extraction from them and slurry waste of elements of platinum group is discussed. For carrying out research 100 kg of ore and 130 kg of tails of beneficiation were selected. It is established that in the course of receiving nickel-cobalt go of a si...

Physical-mechanical properties of cement slurries with the addition of wastes of the of aluminum fluoride production – silica gel – have been studied. Analysis of the study results showed that when adding silica gel in the amount of 5–15 % mass. into the cement slurry composition, there occurs an increase of the cement stone strength and its permea...

This study present laboratory experiments carried out for nickel oxide reduction in a reverberatory furnace at medium pressure and a temperature range of 400˚C-1050˚C. Analyses were carried out on nickel nanostructures and their partially reduced metallic nickel products using Zeiss Leo Supra 35 SEM. It became evident from the experimental processe...

In this article has studied the negative roles of chlorides, dissolved oxygen and aluminum, which are existed directly in the oil or indirectly in the associated water on the corrosion resistance of the coiled-pipes of the tubular furnace inside KINEF refinery (Russia). In this paper, we studied the coiled-pipes of the ELOU-AVT-6 installation, whic...

The main area of coal application is energy production. During such stages as min-ing, transporting, treatment, storing and processingof coal, a large number of small products are formed, such as screenings, spills, sludges, etc. Such products are not usedand significantly pollute the environment. Meanwhile, after agglomeration, they can eas-ily be...

The production of metallurgical silicon is characterized by the use of stationary units as ore-thermal furnaces. Such furnaces’ operational difficulties are associated primarily with a low level of automated control and management. The present article is concerned with the features of the modern technological process for metallurgical silicon produ...

Automated control systems for arc steel-melting furnaces feature a number of disadvantages and limitations with respect to complete control of technological process. The issues of automation of state-of-the-art metallurgical plants are considered. The main directions of studies of arc furnaces thermal state are detected. Studies of factor changes i...

Versions are provided for the use of red mud (RM) as a substitute for expensive lime and limestone used for cleaning industrial gases with toxic sulfur compounds emitted into the atmosphere in large quantities. Laboratory and industrial tests reveal the absorption capacity of RM for cleaning gases from sulfur discharged into the atmosphere by furna...

The article is devoted to the 150th anniversary of the Periodic Table of Chemical Elements by D.I.Mendeleev. The fundamental law of nature, discovered by D.I.Mendeleev has anomalies and paradoxes associated with certain groups of metals. When studying the physical and chemical properties of complex metal compounds, many discrepancies can be found,...

The methods used for the preparation of an Al–Er master alloy as a promising addition to aluminum alloys for enhancing their physical and mechanical characteristics are analytically reviewed. Thermodynamic analysis of the processes that occur during master alloy fabrication in chloride–fluoride melts containing erbium oxide is carried out. Since th...

Differential thermal analysis (DTA) is used to study the processes that occurr upon the interaction of yttrium fluoride with sodium fluoride and potassium chloride, which are used as a flux during metallothermic synthesis of an Mg–Y master alloy. Moreover, to find the laws of magnesium-thermal reduction of yttrium from a salt mixture, thermal analy...

The article is devoted to studying synthesis of magnesium master alloys with neodymium for smelting ferrous and nonferrous metals. A salt composition is selected based on analysis of composition diagrams and flux requirements for melting magnesium alloys. Differential thermal analysis (DTA) is used to determine temperature ranges of thermal effects...

The purpose of research is to provide a competitive alternative to aluminum silicon alloys used in automotive applications. This alternate can be created by developing composites of Al-5%Cu alloy reinforced with B4C particulates with a low coefficient of thermal expansion. Stir casting can be used to produce Al-5%Cu alloys containing different rati...

The urgent problems of modern steel-making devices are considered on the example of ASSF-90 arc steel-smelting furnace. The analysis of modern methods for controlling the parameters of arc steel-smelting furnaces is performed, the main shortcomings of the methods used are diagnosed. Laboratory studies of the parameters of arc steel-smelting furnace...

The article is a continuation of the research on the production of silver rubles and the development of Russian coinage. Graduates of the Saint-Petersburg Mining University contributed to the reputation and history of the Saint-Petersburg Mint as an advanced and high-tech production. The article describes the beginning of the development of silver...

Currently, despite the prevalence of gas and oil refining products, coal retains a steady trend in use in chemical-metallurgical industries and in power engi neering. The main problem of processing coal and coal materials in various technological operations is the formation of a large number of small coal materials and dust, which are stored in lan...

A brief analysis is provided for the energy consumption to overcome the resistance of a gas layer generated during electrolysis beneath the aluminum electrolytic cell anode, and basic concepts are provided for reducing the volume of a gas layer beneath the anode. A technical solution is proposed providing separation of the self-baking anode into in...