Study of softening temperatures of manganese ores in central Kazakhstan

The article presents the results of studying the temperatures of the beginning, end and temperature range of softening, samples of manganese ores in Central Kazakhstan. For the study, samples of manganese ores from the Zhezdinsky, Karazhal, Keregetas, and Western Kamys deposits were taken. The temperature interval for the softening of ores was determined by the method of isothermal heating on a specially assembled installation

Thermodynamics of integrated deoxidation of steel with a new alloy of aluminum-silicum-manganese (Al - Si - Mn)

The article considers the issue of using a complex alloy of aluminosilicomanganese as a deoxidizer. The value of the Wagner parameter of steel interaction - silicon, aluminum, manganese and concentration in the liquid, were associated with their activity in the metal. A certain consumption of the deoxidizer - aluminosilicomanganese per ton of liquid steel to improve the residual oxygen content in the metal. Possible generators of non-metallic inclusions are established

Thermodynamic modeling of phase composition for Fe-Ca-Si-Al system

In this paper, theoretical studies on the construction of phase structure diagrams of the Fe-Ca-Si-Al system as modeling composition of alloy by Thermodynamic-diagram analysis (TDA) were carried out. TDA analysis allows predicting the optimal composition of alloys using phase structure diagrams of the multicomponent systems. TDA excludes complex mathematical apparatus. Also, TDA allows to obtaine data for the Fe-Ca-Si-Al system, a diagram of phase relationships, each elementary subsystem of which is independent. By analyzing the binary systems, the state diagram of Fe-Ca-Si-Al metal system was constructed, which simulates the final phase composition of the ferroalloy. The reliability of the effectiveness of these methods is confirmed by large-scale laboratory melting tests

Thermodynamic diagrammatic analysis (TDA) of the system Al-Si-Mn-Fe

The article presents the results of thermodynamic diagrammatic analysis of the Al-Si-Mn-Fe metal system as characterizing the final composition of the manganese-containing complex ferroalloy. By the method of thermodynamic diagrammatic analysis, the phase equilibrium of the Al-Si-Mn-Fe metal system was constructed, and the coexisting phases in the alloy were determined. Experimental samples of the aluminosilicomanganese alloy were studied on an Empyrean Malvern Panalytical X-ray diffractometer (XRD), where the presence of phases in the form of an intermetallic compound was determined - MnSi, Mn15Si26, Al2Fe3Si4, Al5Fe2, FeSi and structurally free silicon

Research of microstructure and phase composition of a new complex alloy – alumosilicomanganese (Al-Si-Mn)

The paper presents the results of a physicochemical study of a new complex alloy of alumosilicomanganese. The phase composition of the alloy was studied by X-ray diffraction (XRD) phase analysis on an Empyrean Malvern Panalytical X-ray diffractometer. Radiographs were processed and decoded using the Match! 3 software and the Full- Prof-2021 database. The HighScorePlus, Match! 3 and FullProf-2021 programs are based on the Rietveld method. The study of the microstructure of the alloy was carried out on a scanning electron microscope (SEM) of the JEOL - JSM7001F type. The chemical composition of the phases was determined using an Oxford INCA X-max 80 energy dispersive spectrometer (EDS) installed on a JEOL JSM-7001F scanning electron microscope

Research of microstructure and phase composition of a new complex alloy – alumosilicomanganese (Al-Si-Mn)

The paper presents the results of a physicochemical study of a new complex alloy of alumosilicomanganese. The phase composition of the alloy was studied by X-ray diffraction (XRD) phase analysis on an Empyrean Malvern Panalytical X-ray diffractometer. Radiographs were processed and decoded using the Match! 3 software and the Full- Prof-2021 database. The HighScorePlus, Match! 3 and FullProf-2021 programs are based on the Rietveld method. The study of the microstructure of the alloy was carried out on a scanning electron microscope (SEM) of the JEOL - JSM7001F type. The chemical composition of the phases was determined using an Oxford INCA X-max 80 energy dispersive spectrometer (EDS) installed on a JEOL JSM-7001F scanning electron microscope

Thermodynamic modeling of phase composition for Fe-Ca-Si-Al system

In this paper, theoretical studies on the construction of phase structure diagrams of the Fe-Ca-Si-Al system as modeling composition of alloy by Thermodynamic-diagram analysis (TDA) were carried out. TDA analysis allows predicting the optimal composition of alloys using phase structure diagrams of the multicomponent systems. TDA excludes complex mathematical apparatus. Also, TDA allows to obtaine data for the Fe-Ca-Si-Al system, a diagram of phase relationships, each elementary subsystem of which is independent. By analyzing the binary systems, the state diagram of Fe-Ca-Si-Al metal system was constructed, which simulates the final phase composition of the ferroalloy. The reliability of the effectiveness of these methods is confirmed by large-scale laboratory melting tests

Large-scale laboratory tests for smelting medium-carbon ferromanganese using JEZDA manganese ore and SiMn17 silicomanganese fines

At present, Kazakhstan has established production of ferrosilicomanganese, while refined ferromanganese is not produced. This is primarily due to a lack of high quality feedstock, as well as a lack of theoretical and applied research into new production conditions. To address these issues we conducted large-scale laboratory tests on smelting medium-carbon ferromanganese by one-stage silicothermic method. As a result of these tests, medium-carbon ferromanganese meeting the standard grade with more than 80 % manganese content was produced

Large-scale laboratory tests for smelting medium-carbon ferromanganese using JEZDA manganese ore and SiMn17 silicomanganese fines

At present, Kazakhstan has established production of ferrosilicomanganese, while refined ferromanganese is not produced. This is primarily due to a lack of high quality feedstock, as well as a lack of theoretical and applied research into new production conditions. To address these issues we conducted large-scale laboratory tests on smelting medium-carbon ferromanganese by one-stage silicothermic method. As a result of these tests, medium-carbon ferromanganese meeting the standard grade with more than 80 % manganese content was produced

Processing and Use of Solid Technogenic Waste - Damping Metallurgical Slags for Producing Calcium-Containing Ferro-Alloys

In the given article there are presented the results of complex calcium-containing ferroalloy from high-ash coals of the Saryadyr deposit, dump blast-furnace slag and slag of refined ferromanganese, which related to technogenic waste. There is established the possibility of smelting calcium-containing ferroalloy, the recovery of basic elements reached 91.56% manganese, 87.75% silicon, 76% aluminum and calcium up to 40%