Investigation of Blowing High Silicon Hot Metal by Double Slag Process
-
Ku-Ling Chang
,
Win-Jay Hwang
Abstract
For integrated steel plants, hot metal with silicon content larger than 1.0% cannot be used in BOF (Basic Oxygen Furnace) process unless mixed with low silicon-content hot metal. Slopping is the major disadvantage of BOF operation with high silicon-content hot metal during blowing. But for steel plants with newborn single blast furnace, such as Dragon Steel Corporation, the way of mixing hot metal cannot be delivered in exception of dumping. In order to decrease the amount of hot metal dumping, China Steel Corporation successfully developed a new BOF process for blowing hot metal with silicon content higher than 1%, with a maximum value reaching 2%. Through persistent tests in 250-ton BOF by studying slag properties and blowing models, a double-slag method was developed to blow high silicon content hot metal. During blowing test of high silicon hot metal for three heats, desiliconization slag was sampled during deslagging. The slag composition and mineral phase were examined by the usual XRF chemical analysis, as well as SEM and XRD studies to provide an important reference in the slagging practice for double slag operation.
©[2013] by Walter de Gruyter Berlin Boston
Articles in the same Issue
- Masthead
- Effect of Some Lubricants on the Flow Characteristics of ‘EPDM’ Rubber Under Compressive Load
- Friction Stir Welds of AA6351-T6 and AA2024-T6 Dissimiler Aluminium Alloys
- Effect of Welding Parameters on Pitting Corrosion Rate in 3.5N NaCl of Pulsed Current Micro Plasma Arc Welded AISI 304L Sheets
- An Investigation of Flank Wear Land Inclination in Orthogonal Machining
- Modeling of Radial Over Cut in Electrochemical Machining of Al-B4C MMC Using Response Surface Methodology
- Fundamental Research on a Rational Steelmaking Slag Recycling System by Phosphorus Separation and Collection
- KTH Steel Scrap Model – Iron and Steel Flow in the Swedish Society 1889–2010
- Direct Electrochemical Reduction of Titanium-Bearing Compounds to Titanium-Silicon Alloys in Molten Calcium Chloride
- In Situ Observation of the Evolution of Intragranular Acicular Ferrite at Mg-containing Inclusions in 16Mn Steel
- The Physical Properties of Slags for Electro-slag Remelting in CaF2-CaO-Al2O3-SiO2 System
- Freeze-lining Formation and Microstructure in a Direct-to-blister Flash Smelting Slag
- The Mechanism of Dross Formation during Hot-dip Al-Zn Alloy Coating Process
- Solidification Behaviour of Slags: The Single Hot Thermocouple Technique
- Investigation of Continuous Casting Slag Films Sampled on Site and Comparison with Laboratory Results
- Thermal Conductivity of R-Na2O-SiO2 (R = Al2O3, CaO) Melts
- Investigation of Blowing High Silicon Hot Metal by Double Slag Process
- An Investigation of Electro-deoxidation Process for Producing Titanium from Dense Titanium Dioxide Cathode
- Interaction between Molten Steel, Alumina Lining Refractory and Slag Phase
Articles in the same Issue
- Masthead
- Effect of Some Lubricants on the Flow Characteristics of ‘EPDM’ Rubber Under Compressive Load
- Friction Stir Welds of AA6351-T6 and AA2024-T6 Dissimiler Aluminium Alloys
- Effect of Welding Parameters on Pitting Corrosion Rate in 3.5N NaCl of Pulsed Current Micro Plasma Arc Welded AISI 304L Sheets
- An Investigation of Flank Wear Land Inclination in Orthogonal Machining
- Modeling of Radial Over Cut in Electrochemical Machining of Al-B4C MMC Using Response Surface Methodology
- Fundamental Research on a Rational Steelmaking Slag Recycling System by Phosphorus Separation and Collection
- KTH Steel Scrap Model – Iron and Steel Flow in the Swedish Society 1889–2010
- Direct Electrochemical Reduction of Titanium-Bearing Compounds to Titanium-Silicon Alloys in Molten Calcium Chloride
- In Situ Observation of the Evolution of Intragranular Acicular Ferrite at Mg-containing Inclusions in 16Mn Steel
- The Physical Properties of Slags for Electro-slag Remelting in CaF2-CaO-Al2O3-SiO2 System
- Freeze-lining Formation and Microstructure in a Direct-to-blister Flash Smelting Slag
- The Mechanism of Dross Formation during Hot-dip Al-Zn Alloy Coating Process
- Solidification Behaviour of Slags: The Single Hot Thermocouple Technique
- Investigation of Continuous Casting Slag Films Sampled on Site and Comparison with Laboratory Results
- Thermal Conductivity of R-Na2O-SiO2 (R = Al2O3, CaO) Melts
- Investigation of Blowing High Silicon Hot Metal by Double Slag Process
- An Investigation of Electro-deoxidation Process for Producing Titanium from Dense Titanium Dioxide Cathode
- Interaction between Molten Steel, Alumina Lining Refractory and Slag Phase
