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Aqsū-Ayuly, Kazakhstan

Kaliakparov A.G.,center | Suslov A.V.,Aksu Ferroalloy Plant | Strakhov V.M.,OAO VUKhIN
Coke and Chemistry | Year: 2014

The use of anthracite in the production of high-carbon ferrochrome is assessed. The theoretical and technological aspects of electrothermal production of high-carbon ferrochrome are analyzed. The physicochemical characteristics of anthracite and coke nuts are compared. It is established that the ash content of anthracite is low. More importantly, its content of phosphorus and sulfur is very low. An advantage of anthracite is its high electrical resistance. The use of anthracite in the production of high-carbon ferrochrome in 21-MV A furnaces reduces the consumption of reducing agent (by 1.9%) and electric power (by 6.8%). The extraction of chromium is practically unchanged. The production costs (per 1 t of high-carbon ferrochrome) are reduced. The use of anthracite in more powerful furnaces (63 MV A) permits significant increase in the working voltage and decrease in power consumption by 2.0–2.5%. The phosphorus content in the ferrochrome is reduced with increase in anthracite content in the batch. © 2014, Allerton Press, Inc. Source


Akuov A.,Chemical Metallurgical Institute | Tolymbekov M.,Chemical Metallurgical Institute | Kasenov B.,Chemical Metallurgical Institute | Yesenzhulov A.,Aksu Ferroalloy Plant
Proceedings of the 12th International Ferroalloys Congress: Sustainable Future | Year: 2010

The work is aimed at the search of substitute for ferrochrome silicon in low-carbon ferrochrome production. Thermodynamic aspects of iron and chrome reduction with complex silicon-Aluminum alloy were studied in the work. Reference data were used for analysis of thermodynamic parameters of corresponding reactions. Calculations were made for the temperature range from 298K to liquid state with consideration of phase transformations of reagents. Provisional results of the research indicate the possibility of silicon-Aluminum alloy application in low-carbon ferrochrome production. Source


Kulinich V.I.,Aksu Ferroalloy Plant | Suslov A.V.,Aksu Ferroalloy Plant | Chikhichin V.Y.,Aksu Ferroalloy Plant | Rodygin A.V.,Aksu Ferroalloy Plant | Masalov V.P.,Aksu Ferroalloy Plant
Steel in Translation | Year: 2010

A new approach to simulating electrofurnaces is proposed. This approach takes account of the physicochemical properties and proportions of the batch materials for the production of a specified alloy at specified active power. Corresponding constraints are introduced, on the basis that critical values of certain parameters may lead to unstable furnace operation. A scaling principle is established for mean power (per melt) up to 65-70 MW at ferroalloy furnaces of RKO, RKZ, RKG, and KPNZ type, in circumstances where such power is practically inexpedient. © 2010 Allerton Press, Inc. Source

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