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How can we decrease the phosphorus content of low

In the process of steelmaking, there are two ways for phosphorus in molten steel to enter the slag, that is, oxidative dephosphorization and reductive dephosphorization. When the system oxygen potential is lower than the critical value, the phosphorus element will enter the slag mainly as P3-form (reductive dephosphorization), and the lower the system oxygen potential, the easier the process proceeds.

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Steel making (introduction) [SubsTech]

The Basic Oxygen is equipped with the water cooled oxygen lance for blowing oxygen into the melt. The basic oxygen converter uses no additional fuel. The pig iron impurities (carbon, silicon, manganese and phosphorous) serve as fuel. The steel making process in the oxygen converter consists of

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Steelmaking Technologies Contributing to Steel

Steelmaking Technologies Contributing to Steel Industries NKK TECHNICAL REVIEW No.88 (2003) 20. ferromanganese consumption was markedly reduced. The second is that the life of the refractory lining of the con- verters was extended from 3000 charges to 8500 to 9000 charges.

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Phosphorus Control in DRI-EAF Steelmaking

Flexibility in raw materials, the lower natural gas prices, and the increased use of nonconventional Electric Arc Furnace (EAF) steelmaking using up to Direct Reduced Iron (DRI) have prompted a renewed interest in better control of phosphorus. Iron ore and DRI have higher phosphorus and silica compared to scrap.

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How is Steel Produced? World Coal Association

Around 0.6 tonnes (600 kg) of coke produces 1 tonne (1000 kg) of steel, which means that around 770 kg of coal are used to produce 1 tonne of steel through this production route. Basic Oxygen Furnaces currently produce about 74% of the world's steel. A further

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Basic oxygen steelmaking — Wikipedia Republished // WIKI 2

Basic oxygen steelmaking (BOS, BOP, BOF, and OSM), also known as LinzDonawitz-steelmaking or the oxygen converter process is a method of primary steelmaking in which carbon-rich molten pig iron is made into steel. Blowing oxygen through molten pig iron lowers the carbon content of the alloy and changes it into low-carbon steel.

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5.0 Electric Arc Furnace Steelmaking

prompted the explosion in use of the electric arc furnace for steel production. In the 60's production was limited to low end products such as reinforcing bar and other long products and this growth was primarily at the expense of the open hearth.

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Steel-making processes Total Materia

In Austria the LID process (Linz-Donawitz) converts low phosphorus pig iron into steel by top blowing with an oxygen lance using a basic lined vessel (Fig. 2b). To avoid excessive heat scrap or ore is added. High quality steel is produced with low hydrogen and nitrogen (0,002%).

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BASIC OXYGEN STEELMAKING (BOS) The Processing

Apr 22, 2019 · 3 INTRODUCTION Nowadays, about 67% of the total worldwide crude steel production is made by a Basic Oxygen Steelmaking processing route, which involves the following stages Ø BLAST FURNACE (BF) Ø BASIC OXYGEN FURNACE (BOF) Ø SECONDARY METALLURGY Ø CONTINUOUS CASTING (CC) 4.

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A review of phosphorus partition relations for use in

Phosphorus removal in basic oxygen steelmaking is a significant problem for integrated steelmakers. Phosphorus removal is required due to its deleterious effect on the mechanical properties of steel. However, this is progressively becoming more difficult due to the increasing phosphorus content of

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Steel Production Technology Metallurgy for Dummies

The oxygen steelmaking process (Figure 3) The basic oxygen furnace or LD converter (originating from the Linz-Donawitz process started in 1956) is based on oxygen injection by a lance into the melt of hot metal. Scrap and lime are charged into the converter to cool the melt and remove phosphorus, silicon and manganese.

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Desphosphorization in ironmaking and oxygen

dephosphorization techniques which are not part of basic oxygen steelmaking process inherently. 1.2 Iron and Steel making Steelmaking is one of the most energy-consuming industries in the world. In 2013, China's steel industry alone constituted 15.9% of the country's total energy consumption and

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Basic Oxygen Furnace steeluniversity

Basic Oxygen Furnace Code 3D-BOS. Basic Oxygen Steelmaking (BOS) is a primary steelmaking method in which the high-carbon molten pig iron is converted to steel. It is also known as the Linz-Donawitz steelmaking process or the Oxygen Conversion process. € 0.00

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Effect of MgO and Al2O3 variations in oxygen

3 VARIATIONS IN OXYGEN STEELMAKING SLAG 105 Introduction Production of low phosphorus steel (0.060.015 per cent phosphorus at tap) in a single blow in the BOF, especially when the phosphorus content in hot metal is high (above 0.2 per cent) and silicon content is also variable (0.61.2 per cent Si) is a challenging problem. To improve the

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