scholarly journals Ferroalloy production from ferrosilicon manganese dusts

2012 ◽  
Vol 318 (3) ◽  
pp. 43-50
Author(s):  
V.M. Shevko ◽  
◽  
D.K. Aitkulov ◽  
A.D. Badikova ◽  
M.A. Tuleyev ◽  
...  
Keyword(s):  
Metallurgical Plant ◽  
Second Order ◽  
Ferroalloy Production ◽  
Electric Melting ◽  
Arc Furnace ◽  
Electric Smelting ◽  
Degree Of Extraction

The article presents the results of studies on the influence of time, the amount of steel shavings and coke on the electric melting of ferrosilicon manganese dusts to obtain a ferroalloy. The research was carried out by the method of rotational planning of the second order (Box-Hunter plans) and by electric smelting of dust in laboratory ore-thermal arc furnace. Dust from the production of ferromanganese by LLP Taraz Metallurgical Plant, coke and steel shavings were used during the research. It was determined that to achieve αSi≥70%the process must be carried out in the presence of 25% coke and 8.1-9% steel shavings from the mass of dust for 55.8-60 minutes, to achieve αMn in an alloy of 80-85% the process must be carried out in the presence of 25% coke, 5.7-9.0% steel shavings for 41.2-54.4 minutes. When melting the charge containing 75.2% of dust, 18.8% of coke, 6% of steel shavings, within 60 minutes the weight of the ferroalloy was 258 g (38.8% of the weight of the charge or 51.6% of the weight of dust). The degree of extraction of manganese into the alloy was 82.3%, silicon - 66.1%. The resulting ferroalloy belongs to ferrosilicon manganese of the FeMnSi12 grade.

scholarly journals THEORY AND TECHNOLOGY OF MANUFACTURING A FERROALLOY FROM CARBON FERROCHROME DUSTS

2021 ◽  
Vol 27 (1) ◽  
pp. 23-27
Author(s):  
Viktor Shevko ◽  
Yevgeniy Afimin ◽  
Gulnara Karatayeva ◽  
Alexandra Badikova ◽  
Timur Ibrayev
Keyword(s):  
Gibbs Energy ◽  
Software Package ◽  
Electric Melting ◽  
Energy Minimum ◽  
Arc Furnace ◽  
Equilibrium Conditions ◽  
Carbon Ferrochrome ◽  
Dust Mass ◽  
Extraction Degree ◽  
Planning Technique

The article contains the research results of obtaining a ferroalloy from a carbon ferrochrome dust containing 30,2% of Сr2O3, 23.4% of SiO2, 32.7% of MgO, 5.0% of FeO, 1.6% of CaO, 4.5%of Al2O3, 2.3%of C, and 0.3 %-others. The studies were carried out by a thermodynamic modeling method using the HSC-5.1 software package (Outokumpy) based on the principle of the Gibbs energy minimum, the Box-Hunter rototable planning technique and electric melting of the dust in an arc furnace. It was found that the interaction of the dust with carbon under equilibrium conditions and in the presence of iron leads to formation of Cr4C(T>10000C),Cr3C2, Cr7C3,Cr (T>11000C), FeSi (T>13000C), SiC (T>14000C), SiOg and Si(T>15000C). In the temperature range of 1745-19000C and in the presence of 18-34% of carbon and 8% of iron of the dust mass, the resulting ferroalloy contained 18.5-25.2% of Si and 46.8-49.4% of Cr (in this case the silicon extraction degree into the alloy was 60.0-64.4%, the chromium one–99.8%). When the electrosmelting the granulated dust together with coke and steel shavings, the chromium extraction degree into the alloy was 98-99%, the silicon one–53-57%; the obtained ferroalloys containing 18.3-21.9% of silicon and 45.6-53.6%of chromium meet the requirements to FeCrSi23-grade ferrosilicochromium.

scholarly journals Extraction Kinetics of Silicon, Aluminum, and Calcium from Dubersay Basalt by Electric Smelting

2019 ◽  
Vol 8 (6) ◽  
pp. 4566-4570
Keyword(s):  
Thermodynamic Simulation ◽  
Calcium Carbide ◽  
Experimental Results ◽  
Arc Furnace ◽  
Ferrous Alloys ◽  
Equilibrium Conditions ◽  
Maximum Extraction ◽  
Simultaneous Decrease ◽  
Electric Smelting ◽  
Kinetics Of

This article presents experimental results of extraction of silicon, aluminum into ferrous alloys and calcium into calcium carbide by electric smelting of basalt from Dubersay deposit. The studies were performed using thermodynamic simulation and electric smelting in arc furnace. The thermodynamic simulation was performed using HSC-5.1 software based on the principle of minimum Gibbs energy. The studied blend was smelted in one-electrode lined arc furnace. The experimental results of extraction of silicon, aluminum, and calcium from Dubersay basalt demonstrated that under equilibrium conditions, interaction of basalt with carbon and iron was accompanied by formation of CaSiO3 , Al2SiO3 , FeSi, SiO2 , SiC, CaSi, Na2SiO3 , SiO(g), Si(g), CaC2 , CaO, Ca(g), Al2O3 , Al, Al(g). During electric smelting of basalt it was detected that without lime silicon and aluminum were maximally extracted into alloy, and calcium into calcium carbide – in 30-45 min, herewith, the maximum extraction rate (76.5%) was observed for silicon extraction into alloy, and the minimum rate (65.3%) – for calcium extraction into carbide; when 25% of lime were added to basalt, the rate of calcium extraction into calcium carbide increased to 87.3% with simultaneous decrease in the rates of silicon and aluminum extraction into alloy to 71.4% and 60%; respectively; in order to achieve the rate of silicon and aluminum extraction into alloy of 76.1-76.8% and 70.0-72.4%, respectively, and of calcium into calcium carbide of 77-79.4% with production of calcium carbide of 235-239 dm3 /kg, the electric smelting of basalt should be performed with 7.3-11.2% of lime from basalt weight in 36.2-33.9 min.

Energy-saving conditions for electric melting of prereduced pellets in the bath of an arc furnace

2015 ◽  
Vol 2015 (6) ◽  
pp. 459-463 ◽  
Author(s):  
E. E. Merker ◽  
E. A. Chermenev ◽  
V. A. Stepanov
Keyword(s):  
Energy Saving ◽  
Electric Melting ◽  
Arc Furnace

Electric Melting of Iron-Ore Prereduced Pellets in an Electric Arc Furnace

2017 ◽  
Vol 2017 (12) ◽  
pp. 1002-1005
Author(s):  
E. E. Merker ◽  
L. N. Krakht ◽  
O. I. Malakhova ◽  
A. A. Kozhukhov ◽  
E. A. Chermenev ◽  
...  
Keyword(s):  
Iron Ore ◽  
Electric Arc Furnace ◽  
Electric Arc ◽  
Electric Melting ◽  
Arc Furnace

Increase in the efficiency of electric melting of pellets in an arc furnace with allowance for the energy effect of afterburning of carbon oxide in slag using fuel–oxygen burners

2015 ◽  
Vol 2015 (12) ◽  
pp. 975-979 ◽  
Author(s):  
V. A. Stepanov ◽  
L. N. Krakht ◽  
E. E. Merker ◽  
A. V. Sazonov ◽  
E. A. Chermenev
Keyword(s):  
Carbon Oxide ◽  
Electric Melting ◽  
Arc Furnace ◽  
Energy Effect

scholarly journals Effect of continuity of refinery on the working index of electric arc furnace

2021 ◽  
Vol 7 (3) ◽  
pp. 001-007
Author(s):  
Iliyasu Kayode Okediran ◽  
Musibaudeen Olatunde Idris ◽  
Olayide Rasaq Adetunji ◽  
Busayo Adeboye ◽  
Abdulhafiz Ademola Adefajo
Keyword(s):  
Energy Consumption ◽  
Metallurgical Plant ◽  
Software Package ◽  
Human Life ◽  
Electric Arc Furnace ◽  
Electric Arc ◽  
Daily Activities ◽  
Arc Furnace ◽  
Huge Amount ◽  
Global Demand

The need for metal usage is indispensable in the daily activities of human life. Metal is needed for the construction of different infrastructures such as houses, roads, bridges etc but despite the fact there is huge amount of metal available, it does not meet the global demand. Thus this paper investigated continuity of refinery as a measure to improve the efficiency of Electric Arc Furnace. In order to achieve maximum precision during production, getting the product at relatively reduced price has remained a major problem to Scientists. The experiment was conducted at industrial scale whereby the time was varied from 20 to 40 minutes while energy consumption rose from 0.0542 to 0.1103 mW-Hour/ton and productivity fell from 253.0 to 99.2 ton/Hour .The data were collected from active furnace in Zerepaves Metallurgical plant, Russia and analyzed with software package for accuracy. It can be concluded that increasing refinery continuity reduces working productivity of the electric arc furnace.

scholarly journals Smelting of ferrosilicum from the position of energy and technology criteria of ferroalloys electric arc furnace operation

2018 ◽  
pp. 43-49
Author(s):  
A. P. Shkirmontov
Keyword(s):  
Electric Power ◽  
Thermal Process ◽  
Raw Materials ◽  
Current Source ◽  
Electric Arc Furnace ◽  
Electric Arc ◽  
Furnace Operation ◽  
Ferroalloy Production ◽  
Main Element ◽  
Arc Furnace

For estimation of ferroalloy-producing electric arc furnace operation efficiency an energy and technology criteria proposed. Its physical meaning is as follows: it determines a share of energy from the current source, in particular its useful part, spent by ore reduction carbon-thermal process of a ferroalloy production (ferrosilicum, ferrochrome, ferromanganeese), taking into account heat losses and degree of extraction of the leading element into the alloy.Results of an analysis of ferroalloys smelting parameters in electric arc furnaces via carbon-thermal process by example of smelting FeSi using energy and technology criteria of ferroalloys furnace operation presented. It was shown, that while increasing values of energy and technology criteria, the specific consumption of electric power per one basic tonne of the alloy is reducing. For mid power electric furnaces that melted 75% FeSi, the energy and technology criteria of ferroalloys furnace operation corresponds to a range from 0.300 to 0.314. At the same time, the specific electric power consumption is from 9.0 to 8.6 MW∙h/t of the alloy. A satisfactory, but less efficient version of the furnace operation is the range of energy and technology criteria from 0.272 to 0.293 and specific electricity consumption of electric power varies from 9.8 to 9.2 MW∙h/t of alloy. Such a complex value can be considered as the main element of the energy and technological audit of the ferroalloy furnace facility, as well as to identify effective operating modes, analysis of usage of various types of charge materials (ore raw materials, carbonaceous reductants) and the application of innovative melting technologies.

Use of an aluminum injection technology for deoxidizing steel being tapped from an electric-arc furnace at the Moldavian Metallurgical Plant

Metallurgist ◽  
2010 ◽  
Vol 54 (1-2) ◽  
pp. 14-18
Author(s):  
I. V. Derevyanchenko ◽  
O. L. Kucherenko ◽  
I. V. Repin ◽  
Yu. N. Kirilyuk ◽  
E. E. Shumakher ◽  
...  
Keyword(s):  
Metallurgical Plant ◽  
Electric Arc Furnace ◽  
Electric Arc ◽  
Arc Furnace ◽  
Injection Technology ◽  
Moldavian Metallurgical Plant
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