THERMODYNAMIC MODELLING OF THE METALS’ REDUCTION PROCESS FROM THE SUROYAM TITANOMAGNETITE CONCENTRATE
DOI:
https://doi.org/10.14529/met180203Keywords:
Suroyam ore deposit, titanomagnetite, ITmk3, Terra, modellingAbstract
According to the P1 category, the forecast resources of the Suroyam ore deposit exceed 2.2 bn tones of titanomagnetite ore. This is an analog of the Kachkanarsk ore deposit in Sverdlovsk region. The major element in this ore is iron which content reaches about 16.5%. The other elements which are possible for extraction are titanium, vanadium and phosphorus. The processing of the concentrate is expected to be carried out by using the ITmk3 technology.
In this paper the thermodynamic analysis was performed using the Terra software allowing estimation of the effect of temperature on parameters of processes occurring in the system metal-slag-gas.
The effect of temperature on metal composition was analyzed. It was found that in the temperature range 500–800 °C the metal phase was comprised of iron, manganese, sulfur and carbon. With temperature increase to 800 °C and above vanadium, phosphorus, titanium and silicon were reduced to metal phase. The content of vanadium reached maximum at temperature 1100 °C, phosphorus at 1250 °C, whereas the content of titanium and silicon increased with the temperature enhancement. The effect of temperature on the composition of the slag phase was observed. It was found that in the temperature range 500–1100 °C the FeO content decreased from 65% to 0%. This led to an increase in the relative proportion of other oxides (SiO2, Al2O3, CaO, MgO and etc.). The proportion of P2O5 reached maximum at temperature 1000 °C, TiO2 – 1250 °C, SiO2 – 1350 °C, respectively. The coefficients of recovery of elements from the charge material to the metal were determined. It was found that with enhancement of temperature, the recovery ratio of iron, manganese, vanadium, phosphorus, titanium and silicon increased, whereas sulfur decreased. In the temperature range 1350–400 °C the coefficient of the extraction of iron, manganese, vanadium, phosphorus was 1, titanium 0.4–0.6, silicon 0.02–0.07 and sulfur 0.75–0.79.
References
Kapelyushin Y.E., Roshchin V.E., Roshchin A.V. Beneficiation of Vanadium and Titanium Oxides by Using Selective Extraction of Iron in Low-Titanium Magnetite Concentrate. Solid State Phenomena, 2017, vol. 265, pp. 913–918. DOI: 10.4028/www.scientific.net/SSP.265.913
Kapelyushin Y.E, Sasaki Y., Zhang J., Jeong S., Ostrovski O. Formation of a Network Structure in the Gaseous Reduction of Magnetite Doped with Alumina. Metallurgical and Materials Transactions B, 2017, vol. 48, no. 2, pp. 889–899. DOI: 10.1007/s11663-016-0897-1
Bartenev I., Issagulov A., Baysanov A., Roshchin V.E., Makhambetov E., Sirgetayeva G., Issagulovа D. Studying Microstructure and Phase Composition of a New Complex Calcium Containing Alloy. Metalurgija, 2016, vol. 55, no. 4, pp. 727–729.
Roshchin V.E., Roshchin A.V., Akhmetov K.T., Salikhov S.P. Role of a Silicate Phase in the Reduction of Iron and Chromium and Their Oxidation with Carbide Formation During the Manufacture of Carbon Ferrochrome. Russian Metallurgy (Metally), 2016, vol. 2016, no. 11, pp. 1092–1099. DOI: 10.1134/S0036029516090123
Kapelyushin Y.E., Xing X., Zhang J., Jeong S., Sasaki Y., Ostrovski O. Effect of Alumina on the Gaseous Reduction of Magnetite in CO/CO2 Gas Mixtures. Metallurgical and Materials Transactions B, 2015, vol. 46, no. 3, pp. 1175–1185. DOI: 10.1007/s11663-015-0316-z
Kapelyushin Y.E, Sasaki Y., Zhang J., Jeong S., Ostrovski O. In-Situ Study of Gaseous Reduction of Magnetite Doped with Alumina Using High-Temperature XRD Analysis. Metallurgical and Materials Transactions B, 2015, vol. 46, no. 6, pp. 2564–2572. DOI: 10.1007/s11663-015-0437-4
Kapelyushin Y.E, Sasaki Y., Zhang J., Jeong S., Ostrovski O. Effects of Temperature and Gas Composition on Reduction and Swelling of Magnetite Concentrates. Metallurgical and Materials Transactions B, 2016, vol. 47, no. 4, pp. 2263–2278. DOI: 10.1007/s11663-016-0719-5
Trusov B.G. Modelirovanie khimicheskikh i fazovykh ravnovesiy pri vysokikh temperaturakh [Modeling of Chemical and Phase Equilibria at High Temperatures]. Patent RF, no. 920054, 1992.
Trusov B.G. [TERRA Software System for Modeling Phase and Chemical Equilibria at High Temperatures]. III Mezhdunarodnyy Simpozium “Gorenie i Plazmokhimiya” [III International Symposium “Combustion and Plasma Chemistry”]. Almaty, Kazakhstan, Kazak universiteti Publ., 2005, pp. 52–57. (in Russ.)
Gamov P.A., Mal'kov N.V. Thermodynamic Analysis of Sulfur in ESR Steel DIN 14MoV63 Using Blast Furnace Slag. Bulletin of the South Ural State University. Ser. Metallurgy, 2017, vol. 17, no. 4, pp. 32–37. (in Russ.) DOI: 10.14529/met170403
Drozin A.D., Yaparova N.M., Kurkina E.Yu. Algorithm of Mathematical Processing of Information Obtained from the Surface of Steel Samples at the Study of Pollution of Steel by Non-Metallic Inclusions. Bulletin of the South Ural State University. Ser. Computer Technologies, Automatic Control, Radio Electronics, 2018, vol. 18, no. 1, pp. 124–132. (in Russ.) DOI: 10.14529/ctcr180115
Dudorov M.V., Drozin A.D., Roshchin V.E., Gamov P.A., Menikhes L.D. [Mathematical Description of Crystalization by the Method of Virtual Volumes]. Bulletin of the South Ural State University. Ser. Mathematics. Mechanics. Physics, 2012, no. 11, pp. 78–88. (in Russ.)
Gamov P.A., Drozin A.D., Dudorov M.V., Roshchin V.E. Model for Nanocrystal Growth in an Amorphous Alloy. Russian Metallurgy, 2012, vol. 2012, no. 11, pp. 1002–1005. DOI: 10.1134/S0036029512110055
Gamov P.A., Drozin A.D., Dudorov M.V., Roshchin V.E. [Model for Nanocrystal Growth in an Amorphous Alloy]. Metally, 2012, no. 6, pp. 101–106. (in Russ.)
Yaparova N.M. Method for Solving Some Multidimensional Inverse Boundary Value Problems for Parabolic PDEs without Initial Conditions. Bulletin of the South Ural State University. Ser. Computer Technologies, Automatic Control, Radio Electronics, 2015, vol. 15, no. 2, pp. 97–108. (in Russ.) DOI: 10.14529/ctcr150211
