Slag Splashing Technique In Converter Operation – IspatGuru

EP0714989A1 - Steel manufacturing method using converter ...

A method of efficiently carrying out the dephosphorization, dephosphorization-decarbonization, or desulfurization-dephosphorization-decarbonization of molten iron in a converter. The feed rates of flux and a bottom-blowing gas are regulated so that bottom-blowing agitation power of not less than 0.1 kW/t, a CaO/SiO₂ of treated slag of 0.7-2.5, and a temperature at a treatment terminal point ...

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Concert Halls Acoustic Design | Drywall | Building ...

CONCERT HALLS. ACOUSTIC DESIGN. Definition Concert halls Materials used. CONCERT HALL. Aconcert hallis a whereconcertsofclassical musictake Concert hall can either mean the room where the concerts takes place, whole building.. place place. actual or the. CONCERT HALL. A concert hall is usually a big hall: big enough for anorchestra to be on the stage.

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CFD Analysis of Influence of Slag Viscosity on the ...

During the slag splashing process, molten slag located in the converter bottom is splashed to sidewalls using a gaseous nitrogen supersonic jet. Momentum of the nitro-gen jet is transferred to slag, which causes the slag to be stirred and ejected by the action of a standing wave and high shear forces [5-8]. Inertial, gravitational, viscous

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Thermochemical model of the Pierce-Smith copper converter

The effect of each variable on the converter operation. ... been investigated using a radioisotope exchange technique. Copper sulfide melts were doped with S35. ... slag, and gas in the converter ...

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Application practice of BOF Slag tailings in steelmaking ...

slag tailings as slag forming materials is benefitial to the acceleration of slag forming, the dephosphorization, as well as natural resources and cost saving. Therefore, its utilization as slag forming materials. in BOF operation practice is a good way for the cycling BOF slag, and can reduce the pressure to the environment by BOF production.

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Basic Oxygen Furnace - RHI Magnesita

to the customer-specific converter operation and process conditions. Both carbon-bonded and synthetic resin-bonded ... Slag coating Slag splashing Patching / Hot repair Suitability As a supplier of high-grade refractory products, RHI Magnesita develops ... • Counter percussion technique • Safe working conditions • Increased BOF availability.

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BUILD INDUSTRIAL PAKISTAN: 2014

May 31, 2014· 2) However slag splashing technique is being employed in various steel plants world over to increase refractory life of Converter and is also an economical re-use of Converter slag. The frequency of slag splashing varies from plant to plant and depends on the prevailing technological parameters and operating conditions of individual plant.

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Factors affecting Lining Life of a Basic Oxygen Converter ...

Sep 20, 2015· Slag splashing technique needs few minutes of the converter time after the tapping of the previous heat and before the start of the next heat. Slag splashing technique has been developed to counter the erosion and produce a freeze lining in a converter. Splashed slag acts as a working lining during subsequent heats.

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A Novel Method of Recycling CO2 for Slag Splashing in ...

Dec 01, 2010· To improve the level of recycling converter off-gas in steel plants, a novel approach to the recycle of CO 2 separated from converter off-gas or other off-gas for the green slag splashing technique was developed, and the CO 2 equilibrium conversion ratio of the green CO 2 slag splashing under different technological conditions was calculated by ...

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Steelmaking Slag - an overview | ScienceDirect Topics

Apr 04, 2012· D. Sichen, in Fundamentals of Metallurgy, 2005. 9.5.1 Slag–metal mixing. In steelmaking, slag–metal mixing is a very common phenomenon and it occurs due to the shear at the slag–metal 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 slag–metal reactions.

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Corrosion mechanism and protection of BOF refractory for ...

May 01, 2020· In addition to the operation of slag splashing process, the slag composition is an impact factor of slag splashing. When the melting point of slag is low, it will melt earlier and lose its protective effect in the smelting process. The basicity of slag splashing of normal steelmaking process in converter is about 3.5.

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March 2013 – IspatGuru

About IspatGuru. Through the ispatguru.com website I share my knowledge and experience gained through my association with the steel industry for over 54 years.

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Slag Splashing in a Basic Oxygen Furnace under Different ...

The influence of three different blowing conditions on the slag splashing process in a basic oxygen furnace for steelmaking is analyzed here using two-dimensional transient Computational Fluid Dynamics simulations. Four blowing conditions are considered in the computer runs: top blowing, combined blowing using just a bottom centered nozzle, combined blowing using two bottom lateral nozzles ...

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Experience with long BOF Campaign Life and TBM Bottom ...

slag splashing is started. After a splashing period of 3 - 4min the remaining furnace slag is discharged into a slag pot. The splashing technique was optimized by using water model studies to evaluate optimum lance height and Nitrogen flow rate for the best available splashing results. Bottom built-up is controlled by different measures which ...

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CFD Analysis of Influence of Slag Viscosity on the ...

Physical properties of molten slag such as viscosity, density and surface tension have a significant influence on the slag splashing process in an oxygen steelmaking converter. Particularly, viscosity determines the shear forces that rule droplets formation. Besides, stirring of the molten slag bath strongly depends on this property. In this work, the influence of viscosity on the efficiency ...

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Technical – Page 30 – IspatGuru

About IspatGuru. Through the ispatguru.com website I share my knowledge and experience gained through my association with the steel industry for over 54 years.

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12.3 Primary Copper Smelting

12.3 Primary Copper Smelting 12.3.1 General1 Copper ore is produced in 13 states. In 1989, Arizona produced 60 percent of the total U. S. ore. Fourteen domestic mines accounted for more than 95 percent of the 1.45 megagrams (Mg)

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Slag splashing technique in converter operation – IspatGuru

Mar 24, 2013· The slag splashing technology consists in the splashing of the left over slag from previous heat by blowing of nitrogen gas on it towards the hot face of the converter through a blowing lance. It consists of coating the slag on the converter lining by freezing the liquid slag on the walls of the converter.

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Understanding Steel Making Operations in Basic ... - IspatGuru

This process is known as slag splashing (refer link article http://www.ispatguru.com/slag-splashing-technique-in-converter-operation/). Near the end of a campaign, gunning with refractory materials in high wear areas may also be necessary. Once converter maintenance is complete the converter is ready to receive the charge for the next heat.

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Oxygen Blowing - an overview | ScienceDirect Topics

When slag splashing is used, the campaigns can last even thousands of heats more. During such long campaigns, the converter geometry can greatly change from the original cylindrical–conical symmetry that can influence the process phenomena and make control difficult. Figure 1.4.3 shows schematically the refractory lining of BOF.

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Physical modelling of slag splashing in converter ...

Slag splashing, which is a new technology to increase converter lining life, has achieved significant economic and environmental results. Via a converter model of Steelmaking Plant no. 3 of An ...

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CN102212640A - Convertor steelmaking method capable of ...

The invention belongs to the technical field of convertor steelmaking, and provides a convertor steelmaking method capable of reducing slag quantity. The process flow disclosed by the invention is circular process flow starting with step of protecting a furnace by slag splashing and ending with the step of remaining slag in the furnace.

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(PDF) Protection of converter linings with slag adherence ...

reduce the impact of the BOF operation on the ... chemical splashing, slag coating and slag ... " The Aplication Technique of the Converter Lining in Kwangyang Steelworks ". 1 st European Oxygen ...

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GB2045281A - Multi stage conversion of crude iron to steel ...

GB2045281A GB7936945A GB7936945A GB2045281A GB 2045281 A GB2045281 A GB 2045281A GB 7936945 A GB7936945 A GB 7936945A GB 7936945 A GB7936945 A GB 7936945A GB 2045281 A GB2045281 A GB 2045281A Authority GB United Kingdom Prior art keywords oxygen slag molten iron iron ton Prior art date 1978-10-24 Legal status (The legal status is an assumption and is not a legal …

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satyendra – Page 85 – IspatGuru

Slag splashing technique in converter operation ... lining life, MgO saturation, slag conditioning, slag corrosin, slag splashing, slag viscosity, Read More. Blast Furnace gas generation and usage. satyendra; March 18, 2013; 2 Comments ; BF gas, characteristics of BF gas, CV, Fuel gases, usage of BG gas, Read More. 1 … 84 85 86; About ...

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Role of Slag in Converter Steelmaking – IspatGuru

Aug 01, 2015· Recently, slag splashing has become an established practice to prolong converter life. The residual slag in the converter is conditioned for chemical composition and temperature after tapping and is splashed by a violent nitrogen flow around the converter wall.

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Slag Splashing: simulation and analysis of the slags ...

Nov 01, 2019· The successful application of the repair and prevention of LD converters refractories technique called Slag Splashing requires a close control of the slag physicochemical properties (basicity, viscosity and surface tension), as well as suitable selection of operational parameters and geometric configurations.

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Pyrometallurgy Towards Clean Metallurgical Processing 2012

stantial splattering and splashing causing operational the converter mouth and aisle. In addition, l, which is attributed to the punching operation as a "URGICAL PROCESSING UCTION in copper (Cu) and nickel (Ni) making smelters for on (Fe) and sulphur (S) chemically associated with reactions. This process is commonly refened to as

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Slag Splashing in a Basic Oxygen Furnace under Different ...

in the BOF bottom after the draining of steel is splashed to the converter sidewalls by means of a nitrogen jet. Later, molten slag freezes at the converter walls and forms a protective coating that helps to decrease the wear of the refractory lining. Nitrogen is injected into the converter through a water-cooled vertical lance and bottom tuyeres.

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(PDF) Study of the Phase and Mineralogical Properties of ...

Keywords: slag splashing, “slag splashing” technology, converter slag. In the basic oxygen steel production technology, the cost is greatly affected by the resistance of the refractory lining.

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