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Jan 05, 2012#0183;#32;Slagremaining and double slag steelmaking technology in one converter (MURC) (Ogawa et al., 2001). 1. Slag from this heat can be used in the next heat to realize the early dephosphorization.
The SlagRemaining+DoubleSlag BOF steelmaking process has been developed and applied in Shougang Corporation, Ltd., by which consumption of lime and volume of slag in BOF steelmaking are remarkably decreased. In this paper, three important technologies taken in application of the new steelmaking process are introduced: 1.
Jul 01, 2018#0183;#32;The doubleslag converter steelmaking process can smelt low and ultralowphosphorus steel and reduce lime and dolomite consumption and the amount of final slag simultaneously. Industrial steelmaking tests on a 150metric ton converter at the Tangsteel Company were carried out to study this principle and its effect on the dephosphorization ratio and material consumption.
Jan 10, 2014#0183;#32;Slags are one of the most natural products of all. Slags are principally divided into blast furnace slag and metallurgical slag. At voestalpine the slags resulting from the steelmaking process are separated into blast furnace and metallurgical slags and then recycled. The separated slags are processed into valuable products.
Jul 26, 2018#0183;#32;The doubleslag steelmaking process uses a low temperature during the early stages, which is a conducive thermodynamic condition for dephosphorization. The endpoint slag, which had almost lost its dephosphorization ability at high temperature was solidified to the inner lining surface and reused for dephosphorization in the lowtemperature
At Fukuyama No. 2 Steelmaking Plant, JFE Steel developed DRPTM (Doubleslag Refining Process), in which dephosphorization blowing is performed after desiliconization blowing and discharge of the resulting high SiO2 slag out of the system, while also melting scrap by
Aug 01, 2015#0183;#32;In steelmaking process, the slag is predominantly a mixture of oxides with small amounts of sulphides and phosphides. The oxides are either acidic or basic in nature. Slag is formed during refining of hot metal in which Si oxidizes to SiO2, Mn to MnO, Fe to FeO, and P to P2O5 etc., and addition of oxides such as CaO (lime), MgO (calcined dolomite), iron oxide, and others.
This slag is a byproduct from steelmaking processes in which the components of pig iron and steelscrap are modified in order to produce steel that is so highly valued for excellent toughness and workability.
ABSTRACT. ABSTRACT. The suitable process parameters and mechanism on dephosphorisation by low basicity slag become the key problem of the returnslag and doubleslag operation (RDO) in the early stage of converting steelmaking process. The experimental results of 80 t converter steelmaking show that the dephosphorisation ratio of hot metal is high in condition that the slag basicity is and the
The fused substance formed by the action of a flux upon the gangue of ironbearing materials charged to a steelmaking furnace and upon the oxidized impurities in the steel produced. Depending upon the particular steelmaking operation, the slag is composed primarily of sulfur and oxides of aluminum, calcium, iron, magnesium, manganese, phosphorus, and silicon.
Slag significantly effects the quality and the properties of the steel. Proper slag formation is a crucial part in clean steelmaking as in the old proverb: Take care of your slag, the steel will take care of itself .
The slagging method adopts the double slagremaining slag smelting method, achieves the purposes of promoting fast forming of primary slag and improving the dephosphorization effect by adding
Aug 15, 2016#0183;#32;Dephosphorization of steels has become a very important metallurgical technique in steelmaking process to produce high quality steels. As the P content is controlled by the reactions in BOF, the double slag technique has generally been applied to obtain low P killed steels.
Basic Oxygen Furnace (BOF) steel making or Basic Oxygen Furnace Steelmaking (BOS) or LinzDonawitzVerfren steelmaking or the oxygen converter process is a method in which both molten pig iron and steel scrap are converted into steel with the oxidizing action of oxygen blown into the melt under a basic slag.
Apr 04, 2012#0183;#32;In steelmaking, slagmetal mixing is a very common phenomenon and it occurs due to the shear at the slagmetal interface caused by excessive liquid steel flow. 37 This mixing leads to emulsification of steel in slag, which increases the total interfacial area and consequently the rate of slagmetal reactions.
This slag is a byproduct from steelmaking processes in which the components of pig iron and steelscrap are modified in order to produce steel that is so highly
Slag is the glasslike byproduct left over after a desired metal has been separated (, smelted) from its raw is usually a mixture of metal oxides and silicon, slags can contain metal sulfides and elemental metals. While slags are generally used to remove waste in metal smelting, they can also serve other purposes, such as assisting in the temperature control of
The doubleslag converter steelmaking process can smelt low and ultralowphosphorus steel and reduce lime and dolomite consumption and the amount of final slag simultaneously.
Steel Steel Secondary steelmaking: An opentopped cylindrical container made of heavy steel plates and lined with refractory, the ladle is used for holding and transporting liquid steel. Here all secondary metallurgical work takes place, including deslagging and reslagging, electrical heating, chemical heating or cooling with scrap, powder injection or wire feeding, and stirring with gas
Mar 28, 2017#0183;#32;The principle of the process of using synthetic slag consists in making a contact on a large surface between the liquid steel and a slag having a composition selected to ensure an advanced steel deoxidation and desulphurization. Design of synthetic slag. Slag design in secondary metallurgy is crucial for the performance in steelmaking.
For plaincarbon steel furnaces, as soon as slag is detected during tapping, the furnace is rapidly tilted back towards the deslagging side, minimizing slag carryover into the ladle. HIsarna Steelmaking. The HIsarna steelmaking process is a process of primary steelmaking in which iron ore is processed almost directly into steel.
Wang, Xinhua. Abstract. The quot;SlagRemaining+DoubleSlagquot; BOF steelmaking process has been developed and applied in Shougang Corporation, Ltd., by which consumption of lime and volume of slag in BOF steelmaking are remarkably decreased. In this paper, three important technologies taken in application of the new steelmaking process are introduced: 1.
metal dumping, the double slag method will be one of the new issues for steelmaking plants in CSC. 2. EXPERIMENTAL Based on the conditions of silicon content being higher than % and with no mixing hot metal operation applied to DSCs newborn single blast furnace, the double slag process was investigated and modified for desiliconization.
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