A Review of Modeling Hot Metal DesulfurizationVisuri
1 Introduction. Hot metal desulfurization serves as the main unit process for removing sulfur in blast‐furnace‐based steelmaking. Hot metal desulfurization is commonly conducted in a ladle or a torpedo car 1 using a desulfurization reagent that is either injected into the metal bath or added on top of it. 2 From the thermodynamic point of view the fundamental requirement for the
Get Price
Progresses and Future Prospects of Steelmaking Technologies
slag based on production of low-P low-S steel by hot metal pretreatment process1 2). Figure 1 shows the hot metal pretreatment process and the developed techniques. At East Japan Works (Chiba District) and West Japan Works (Kurashiki Dis-trict) hot metal desphosphorization (de-P) capacity in torpedo car was increased and hot metal
Get Price
Hot Metal Pretreatment can Lower Impurity Content
Hot metal pretreatment is a process which is performed after the tapping of a blast furnace (BF) and before decarburisation in a basic oxygen furnace (BOF). In most cases this process lowers the impurity content of hot metal. Hot metal desulphurisation de-siliconisation and de-phosphorisation are processes that are included in this category.
Get Price
Hot metal pretreatment process from Torpedo car
Apr 16 2020 · The purpose of a blast furnace is to reduce and convert iron oxides into liquid iron called hot metal. The blast furnace is a huge steel stack linedwith ref
Get Price
A Review of Modeling Hot Metal DesulfurizationVisuri
1 Introduction. Hot metal desulfurization serves as the main unit process for removing sulfur in blast‐furnace‐based steelmaking. Hot metal desulfurization is commonly conducted in a ladle or a torpedo car 1 using a desulfurization reagent that is either injected into the metal bath or added on top of it. 2 From the thermodynamic point of view the fundamental requirement for the
Get Price
A pre-study of Hot Metal Desulphurization
When tapping the hot metal is tapped into a torpedo car for transportation from the blast furnace to the steel shop. 7 (III) Desulphurization of hot metal In the blast furnace the slag has to take up both alkali metals and other impurities such as sulfur and phosphorus.
Get Price
Improvement of reaction efficiency in hot metal
In Japan the hot metal pretreatment process has been developed to refine hot metal under conditions where each impurity can be removed most efficiently. At Nippon Steel three types of hot metal pretreatment process using torpedo car hot metal ladle or LD converter are employed that make a great contribution to the reduction of slag volume.
Get Price
(PDF) The Necessity of Hot Metal Desiliconization Process
dephosphorization in torpedo car transfer ca r or ladle during hot metal pretreatm ent process. Secondly with the percentage of low- phosphorou s steel increasing othe r dephosphorization m ethods
Get Price
Pretreatment of hot metalSlideShare
Sep 17 2015 · • Hence pre-treatment of hot metal to remove excess sulphur and phosphorus prior to BOF steelmaking has gained worldwide acceptance as an intermediate operation. • It can be carried out either at blast furnace runner or in transfer ladle or in torpedo car. 4.
Get Price
PROGRESS OF PRODUCTION TECHNOLOGY OF CLEAN STEEL
The desulphurization in hot metal is a kind of economical and effective desulphurization method which has been widely used in steelmaking production. Two kinds of desulphurization patterns in torpedo car (CaO based flux CaC2 based flux) and hot metal ladle (Mg based flux) were developed in Baosteel. When the original sulphur
Get Price
Development Analysis and Control Method phosphorization
and the control of the hot metal dephosphorization process becamepossible (1) In the case of hot metal pretteatment by torpedo car about 50 /• of top blown oxygengas had the sameeffectiveness as Fe oxide for dephosphorization reaction. The remaining oxygen contributed to the heat supply through decarburization and post combustion reactions.
Get PriceA Review of Modeling Hot Metal Desulfurization
Hot metal desulfurization serves as the main unit process for removing sulfur in blast-furnace-based steelmaking. Hot metal desulfurization is commonly conducted in a ladle or a torpedo car 1 using a desulfurization reagent that is either injected into the metal bath or added on top of
Get Price
JPHAHot metal pretreatment methodGoogle
(57) Summary PROBLEMS To realize hot metal pretreatment with low basicity slag promote dephosphorization reaction by vigorous stirring and prevent slopping phenomenon and decarburization reaction during dephosphorization reaction Provided is a hot metal pretreatment method in which hot metal after pretreatment maintains a high thermal margin has a high yield and does not use fluorite
Get Price
Hot Metal TransferAAF International
This term usually refers to iron and steel making but could equally apply to non-ferrous metals industries and to foundries. "Hot metal" actually means liquid metal which is transferred in many stages of the process such as tapping liquid iron from a blast furnace transfer of the liquid iron into ladles or torpedo cars.
Get Price
The Necessity of Hot Metal Desiliconization Process
The technology of hot metal pretreatment had tremendous improvements in past decades and was widely used by the overwhelming majority of steelworks in Japan. While since the first hot metal pretreatment station was established in Taiyuan Iron and Steel Co. Ltd in the later period of 1980s this process began to be applied in domestic steel
Get Price
2E Hot Metal Pretreatment
to a ladle or to a vessel called a torpedo car and is then charged into the BOF. The oxygen blowing process in which hot metal is decarburized and converted to steel is carried out mostly in the BOF. However a method for dividing the refining capability
Get Price
Torpedo Ladle CarHarbisonWalker International
In addition to transporting molten iron the torpedo ladle can also be used as a refining vessel. For example during desulfurization powdered reagents are injected into the molten iron by means of a lance. The reagents react with the sulfur in the molten iron and separate from the iron in the form of slag.
Get Price
Technical Review UDC 669 . 184 . 244 . 66 Advances in
The method consists of charging scrap arising from inside the works into empty torpedo ladle cars after discharging hot metal and then receiving hot metal from a blast furnace the practice is effective at decreasing the amount of the radiation heat of empty torpedo ladle cars lost to air.
Get Price
Pretreatment and Refining of Hot MetalEfficient
Pretreatment and Refining of Hot MetalEfficient technologies to cope with The process of hot metal desiliconization requires oxygen which can be supplied as gaseous oxygen or torpedo it is difficult to remove the high amounts of slag completely. As a result the torpedo capacity is
Get Price
12.5 Iron And Steel Production
12.5.1.3 Iron Preparation Hot Metal DesulfurizationSulfur in the molten iron is sometimes reduced before charging into the steelmaking furnace by adding reagents. The reaction forms a floating slag which can be skimmed off. Desulfurization may be performed in the hot metal transfer (torpedo) car at a location between the blast furnace and
Get Price
Development Analysis and Control Method phosphorization
and the control of the hot metal dephosphorization process becamepossible (1) In the case of hot metal pretteatment by torpedo car about 50 /• of top blown oxygengas had the sameeffectiveness as Fe oxide for dephosphorization reaction. The remaining oxygen contributed to the heat supply through decarburization and post combustion reactions.
Get Price(PDF) The Necessity of Hot Metal Desiliconization Process
dephosphorization in torpedo car transfer ca r or ladle during hot metal pretreatm ent process. Secondly with the percentage of low- phosphorou s steel increasing othe r dephosphorization m ethods
Get Price
The MURC Process Total Materia Article
(ii) Selection of the converter-type method as the main hot metal de-P process its wider application and further enhancement of reaction efficiency. For primary refining desiliconization and dephosphorization of hot metal use of a torpedo car (TPC) had been applied in the past.
Get Price
PROGRESS OF PRODUCTION TECHNOLOGY OF CLEAN STEEL
The desulphurization in hot metal is a kind of economical and effective desulphurization method which has been widely used in steelmaking production. Two kinds of desulphurization patterns in torpedo car (CaO based flux CaC2 based flux) and hot metal ladle (Mg based flux) were developed in Baosteel. When the original sulphur
Get Price
The MURC Process Total Materia Article
(ii) Selection of the converter-type method as the main hot metal de-P process its wider application and further enhancement of reaction efficiency. For primary refining desiliconization and dephosphorization of hot metal use of a torpedo car (TPC) had been applied in the past.
Get Price
The Necessity of Hot Metal Desiliconization Process
The technology of hot metal pretreatment had tremendous improvements in past decades and was widely used by the overwhelming majority of steelworks in Japan. While since the first hot metal pretreatment station was established in Taiyuan Iron and Steel Co. Ltd in the later period of 1980s this process began to be applied in domestic steel
Get PriceTechnical Report Improvement in Hot-Metal Dephosphorization
Convention- al hot-metal pretreatment methods using torpedo ladle cars or mol- ten metal ladles as the reaction vessels enabled stable production of low-P low-S steels but it required desiliconization at a prior stage and as a result the thermal allowance for the decarburization in con- verters decreased and the scrap ratio was significantly restricted.
Get PricePretreatment and Refining of Hot MetalEfficient
Pretreatment and Refining of Hot MetalEfficient technologies to cope with The process of hot metal desiliconization requires oxygen which can be supplied as gaseous oxygen or torpedo it is difficult to remove the high amounts of slag completely. As a result the torpedo capacity is
Get PriceHot Metal Dephosphorization Treatment in Torpedo Car
Hot Metal Dephosphorization Treatment in Torpedo Car Yuki Nabeshima Keizo Taoka Sumio Yamada Nozomu Tamura Masuto Shimizu Synopsis Hot metal is dephosphorized in the torpedo car at Chiba Works. The main features of the process are (1) post-mixed flux injection (2) improved torpedo-cleaning process and (3) use of large amount of oxygen gas.
Get Price
