Energy Conservation Potential in Stainless Steel Making by use of Molten Pig Iron and Liquid Ferro-Chrome

2013 ◽  
Vol 794 ◽  
pp. 124-131 ◽  
Author(s):  
Lokesh Kumar Singhal ◽  
Sudipta Patra
Keyword(s):  
Stainless Steel ◽  
Energy Conservation ◽  
Energy Efficient ◽  
Electric Arc ◽  
Steel Scrap ◽  
Pig Iron ◽  
Arc Furnace ◽  
High Carbon ◽  
Steel Making ◽  
Carbon Ferrochrome

Stainless steel is mostly manufactured by Electric Arc Furnace Argon Oxygen Decarburization route utilising 100% solid charge of steel scrap/DRI/stainless steel scrap and ferroalloys.The process consumes around 415/450 KWH of power per ton of stainless steel.In the state of Odisha, we are endowed with both iron and chromite ores,which offer opportunity for use of molten pig iron and liquid ferrochrome for energy efficient stainless steel making for a plant located there. This paper analyses potential for energy conservation in EAF for three different grades of stainless steel belonging to AISI 200,300,400 series. In this concept, melting is performed in two different furnaces,one EBT type and the other Spout type.In EBT furnace only high ferrous melt with liquid pig iron and DRI/Scrap are charged and dephosphorized. In the spout furnace high carbon ferrochrome which has a tendancy to solidify rapidly due to its high melting point of nearly 1575°C is diluted with scrap which brings down its melting point drastically to enable it to be kept molten.Silicon in the high carbon ferrochrome is gainfully utilised to raise the temperature of molten pool.The diluted ferrochrome is taken in ladle in appropriate portion to which dephosphorised decarburized molten steel is added from EBT furnace for charging into AOD. The material and energy balance have been carried out for the entire charge mix using classical approach of energy calculation. Both variants of DRI and scrap addition to hot metal have been considered for the EBT furnace. Calculations for EBT furnace have been validated using data from an existing carbon steel plant using similar practice of steel making. Calculated values for such energy efficient stainless steel making have been compared with data on existing stainless steel plant using solid charge. Energy usage can be reduced by more than 60% with this approach. Keywords: Electric arc furnace, Stainless steel melting, liquid ferrochrome, energy conservation.

scholarly journals Mathematical Modeling of Iron and Steel Making Processes. Modeling of a DC Electric Arc Furnace. Mixing in the Bath.

2001 ◽  
Vol 41 (10) ◽  
pp. 1146-1155 ◽  
Author(s):  
Marco Ramírez ◽  
Jonas Alexis ◽  
Gerardo Trapaga ◽  
Par Jönsson ◽  
John Mckelliget
Keyword(s):  
Mathematical Modeling ◽  
Electric Arc Furnace ◽  
Electric Arc ◽  
Arc Furnace ◽  
Iron And Steel ◽  
Steel Making

scholarly journals Briquette smelting in electric arc furnace to recycle wastes from stainless steel production

2015 ◽  
Vol 22 (S1) ◽  
pp. 10-16 ◽  
Author(s):  
Qi-xing Yang ◽  
An-jun Xu ◽  
Peng Xue ◽  
Dong-feng He ◽  
Jian-li Li ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Steel Production ◽  
Electric Arc Furnace ◽  
Electric Arc ◽  
Arc Furnace ◽  
Stainless Steel Production

Construction and survey of changes in electric arc furnace parameters based on energy conservation model using Pscad software

2021 ◽  
Vol 15 (1) ◽  
pp. 75-83
Author(s):  
Ngoc Toan Luong ◽  
◽  
Duc Tung Doan
Keyword(s):  
Energy Conservation ◽  
Power Quality ◽  
Power Level ◽  
Electric Arc Furnace ◽  
Electric Arc ◽  
Arc Furnace ◽  
Electricity Grid ◽  
Power Quality Improvement ◽  
Conservation Model ◽  
The Impact

Actual analysis showed that the arc furnace current contains many harmonics that adversely affect the power quality. There are many domestic and foreign reports on modeling and assessing the impact of EAF on the grid based on different models. However, EAF's selection of capacity for research and application of power quality improvement devices suitable to the power level has not been mentioned, these models are mainly built on Matlab Simulink software. should be primarily academic. PSCAD is one of the widely used software for electrical system simulation and is used by large companies such as ABB, Korean power corporation Kepco. Building EAF model with PSCAD software will increase the ability to apply simulation results into practice. The objective of the paper is to build an electric arc furnace model based on the energy conservation model with PSCAD software, thereby assessing the change of parameters in the model and the effect of this load on electricity grid during operation.

Process and Practice of EAF with De-P Hot Metal Charging for Melting Stainless Steel

2007 ◽  
Vol 561-565 ◽  
pp. 1063-1066
Author(s):  
Fang Yi Zhu ◽  
He Bing Chi ◽  
Xing Yuan Jiang ◽  
Wei Dong Mao
Keyword(s):  
Stainless Steel ◽  
Control Theory ◽  
Integrated Control ◽  
Electric Arc Furnace ◽  
Electric Arc ◽  
Arc Furnace ◽  
Hot Metal ◽  
Factors Affecting ◽  
Physical Energy ◽  
Main Factors

The article introduce the process of Electric Arc Furnace with Dephosphorized hot metal charging for melting stainless steel in Baosteel stainless steel Branch. Based on the practice of production, The main factors affecting the process of EAF with De-P HM charging are theoretically analyzed, such as using oxygen, the material charging and making slag. The optimization of hot metal charging can advance the use of chemical and physical energy, reduce the consumption of power. The optimization of using oxygen can increase the use of chemical energy. The optimization of material charging can reduce the oxidation of Cr. Making foamy slag can advance the transformer capacity and the use of power. Based on the character of the process EAF with De-P HM charging for Melting Stainless Steel, EAF productivity increased were reached with application of integrated control theory on EAF process in Baosteel stainless steel branch.

Process Practice of Refining for Free Cutting Austenite Stainless Steel

2013 ◽  
Vol 325-326 ◽  
pp. 94-96
Author(s):  
Yi Min Wang ◽  
Xian Cai Wang ◽  
Li Min Wen
Keyword(s):  
Stainless Steel ◽  
Continuous Casting ◽  
Continuous Casting Machine ◽  
Casting Machine ◽  
Electric Arc ◽  
Ladle Furnace ◽  
Arc Furnace ◽  
Refining Slag ◽  
Austenite Stainless Steel ◽  
Argon Oxygen Decarburization

FreeCutting Austenite Stainless Steel 303CuS2(%:≤0.08C,8.00~10.00Ni, 17.00~19.00Cr, 1.50~3.50Cu,0.24~0.35S) is smelted by 60t Electric Arc Furnace~60t Argon Oxygen Decarburization~60t Ladle Furnace~3 Flow continuous casting machine. With decreasing basicity of AOD refining slag from 2.0 to 1.6, controlling AOD tapping slag amount and tapping temperature, the [S] in AOD tapping steel increases to 0.008%~0.012% from original 0.004%~0.006%, after feeding S-wire containing 50% S and controlling the end temperature, the yield of S increases to 60%~70% from original 30%~50%, the qualified ratio of raises from 85% to 100%.

Processing and Recycling Experiments of Dust from Electric Arc Furnace

2011 ◽  
Vol 378-379 ◽  
pp. 719-722 ◽  
Author(s):  
Zorica Bacinschi ◽  
Cristiana Zizi Rizescu ◽  
Elena Valentina Stoian ◽  
Dan Nicolae Ungureanu ◽  
Aurora Anca Poinescu ◽  
...  
Keyword(s):  
Steel Production ◽  
Electric Arc Furnace ◽  
Electric Arc ◽  
Raw Material ◽  
Arc Furnace ◽  
Leaching Test ◽  
Fine Grained ◽  
Steel Making ◽  
Fine Grained Material ◽  
The Impact

The processing and recycling experiments of dust from Electric Arc Furnace (EAF) in industrial conditions aimed at highlighting the minimizing possibility of this waste by transforming it into a by-product that can represent either a secondary raw material for steel making in EAF or to recover iron, zinc and lead (the Waltz process). Electric-arc furnace dust (EAFD) is a by-product of steel production and recycling. This fine-grained material contains high amounts of zinc and iron as well as significant amounts of potentially toxic elements such as lead, cadmium and chromium. Therefore, the treatment and stabilization of this industrial residue is necessary. Leaching test is a method of evaluating the impact of waste that is stored (soil, water table).

Monitoring of 137Cs in electric arc furnace steel making process

2010 ◽  
Vol 284 (3) ◽  
pp. 615-622 ◽  
Author(s):  
Tahir Sofilić ◽  
Delko Barišić ◽  
Una Sofilić
Keyword(s):  
Electric Arc Furnace ◽  
Electric Arc ◽  
Arc Furnace ◽  
Steel Making ◽  
Furnace Steel
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