modeling of two phase flow in blast furnace trough
ENHANCEMENT OF LIFE OF BLAST FURNACE RUNNER
on Blast Furnace Operation Parameters Main trough contributes more that 50 of the total specific consumption value in any trough management. The corrosion/erosion in the main trough is caused by the turbulent mix of metal and slag. The rate of corrosion and/or erosion of the trough becomes higher with reduced residence time of slag and metal
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model of two phase (gas powder) flow in moving bed was developed. Key words modeling blast furnace gaspowder flow powder hold up Fizikalno i matemati ko modeliranje fenomena procedure s dvofaznim tokom plin-pra ak kroz pokretni "packed bed" u metalur kim pe ima.
Get PriceModelling of Multiphase Flow in Ironmaking Blast Furnace
A mathematical model for the four-phase (gas powder liquid and solids) flow in a two-dimensional ironmaking blast furnace is presented by extending the existing two-fluid flow models. The model describes the motion of gas solid and powder phases based on the continuum approach and implements the so-called force balance model for the flow of liquids such as metal and slag in a blast
Get PriceA fluid dynamic analysis of the blast furnace trough at
As we are trying to locate the wear on the trough bed so it is only required to model the flow field just in the mid plane of the trough and hence a two dimensional fluid dynamic model will be sufficient for the purpose. The slag layer is not taken into con- sideration in the analysis as there is only liquid metal present after the skimmer plate.
Get PriceTechnical Report UDC 669 . 162 . 263 681 . 3 Development
2. Outlines of Mathematical Models for blast Fur-naces and Examples of Calculation Results 2.1 Analysis of flow of raw materials gas and liquid heatTrans -fer 1)and reactions inside blast furnaces Various mathematical models have been developed regarding the operation of blast furnaces. At the beginning they were one-di-
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oped a mathematical model of the blast furnace 1 2 which can treat fine powder phase in addition to the phases of gas lump solids and liquids. This model which is based on the multi-fluid concept showed the difference in flow characteristics of molten iron and slag that have different properties.
Get PriceMathematical Model of the Solid Flow Behavior in a Real
different phases co-exist in a blast furnace the volume fraction plays an important role in the blast furnace. Therefore the influence of three different packing densities (0.68 0.71 and 0.74 respectively) on the profile of the flow through the upper part of the blast furnace from
Get PriceBABCOCK El WILCOX S EXPERIENCE WITH TWO-PHASE FLOW
moderate pressu s in dilute phase. Bawd on l. Ws background two pulverized coal injection s) tems were designed installed and placed in perat at ion on blast furnaces and have an ac- cumulated operating time of over 15 years. The larger and newer system was placed in operation in 1973 and has achieved =entially 100 availability. This
Get PricePHYSICAL AND MATHEMATICAL MODELING OF
model of two phase (gas powder) flow in moving bed was developed. Key words modeling blast furnace gaspowder flow powder hold up Fizikalno i matemati ko modeliranje fenomena procedure s dvofaznim tokom plin-pra ak kroz pokretni "packed bed" u metalur kim pe ima.
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This paper presents the second phase of model investigations of static pressure radial distribution conducted on 4 levels of bed height. During the phase the diameter of glass bed particles was increased blast-furnace pellets were introduced as bed and iron powder was used as powder. Experiments were carried out with regard to gas velocity bed
Get PriceInfluence of bed particle size on gas- powder two phase
Figure 1 presents physical model of the two –phase gaspowder flow through the moving (descending) packed bed. Descending bed (Fig. 2) was placed in the PCV column of an inside diameter of 196 mm and height of 1 m. Air was used as a gas that is fed to the system with constant volume flow
Get PriceSlug flow in a blast furnace tapholeScienceDirect
Oct 01 2005 · A schematic of slug/intermittent flow is shown in Fig. 2 that shows the above-mentioned flow features. It should be noted that hot metal and molten slag are the two liquid phases in a blast furnace as a simplification in this work only one liquid phase is considered. Download Download full-size image Fig. 2.
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influencing the blast furnace operations and the quality of the metal. The flow-characteristic of blast furnace slags is strongly influenced by the extent of reduction of iron oxide at low temperature (in the granular zone) besides being influenced by the composition and the quality and the quantity of the gangue in the iron bearing materials. II.
Get PriceA fluid dynamic analysis of the blast furnace trough at
As we are trying to locate the wear on the trough bed so it is only required to model the flow field just in the mid plane of the trough and hence a two dimensional fluid dynamic model will be sufficient for the purpose. The slag layer is not taken into con- sideration in the analysis as there is only liquid metal present after the skimmer plate.
Get PricePHYSICAL AND MATHEMATICAL MODELING OF
model of two phase (gas powder) flow in moving bed was developed. Key words modeling blast furnace gaspowder flow powder hold up Fizikalno i matemati ko modeliranje fenomena procedure s dvofaznim tokom plin-pra ak kroz pokretni "packed bed" u metalur kim pe ima.
Get PriceSimulation Study of Blast Furnace Drainage Using a Two
Mar 15 2013 · Drainage behavior in the hearth plays an important role in the operation of ironmaking blast furnaces as the undisturbed extraction of the produced liquid iron and slag is a prerequisite of smooth operation. An improved two-fluid model for simulating the drainage behavior of iron and slag in a blast furnace hearth is developed in this work.
Get PriceMathematical Model of the Solid Flow Behavior in a Real
different phases co-exist in a blast furnace the volume fraction plays an important role in the blast furnace. Therefore the influence of three different packing densities (0.68 0.71 and 0.74 respectively) on the profile of the flow through the upper part of the blast furnace from
Get PriceBlast Furnace Cast House Emission Control Technology
c. dumber of casts between major trough repairs 50 to 60. d. Number of casts between nominal trough patching 25 to 30 e. Material used to line trough brick and stamp 5. BLAST FURNACE CAST HOUSE PHYSICAL DATA a. Tilting spouts are used for iron. b. The blast furnace is common to two cast houses one on each side of iturnace. c.
Get PriceImportance of Hearth Dead man and Tapping in Blast
Apr 13 2016 · Tapping in the blast furnace is adversely affected and trough and runners in the cast house get under strain due to higher slag volume. All these put increased pressure on blast furnace operations. The poor quality of iron ore affects the operation of the blast furnace in the following way.
Get PriceMulti-dimensional mathematical modeling of five phases
oped a mathematical model of the blast furnace 1 2 which can treat fine powder phase in addition to the phases of gas lump solids and liquids. This model which is based on the multi-fluid concept showed the difference in flow characteristics of molten iron and slag that have different properties.
Get PriceMulti-dimensional Mathematical Modeling Of Five Phases In
Multi-dimensional mathematical modeling of five phases in the blast furnace J.A. de Castro H. Nogami J. Yagi Institute for Advanced Materials
Get PriceBlast Furnace operation HOW A BLAST FURNACE WORKS
Aug 04 2011 · The precise filling order is developed by the blast furnace operators to carefully control gas flow and chemical reactions inside the furnace. The materials are charged into the blast furnace through two stages of conical "bells" (5) which seal in the gases and distribute the raw materials evenly around the circumference of the furnace "throat".
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components are set at the top. For the gas phase two boundary conditions are set (1) there is no gas flow through the bottom of the furnace and (2) there is an ingoing gas flow of blast air through the bottom of the cell indicated by the arrows in Figure 2. Figure 2 Division of the blast furnace into computational cells Flow calculations
Get PriceModelling of Multiphase Flow in Ironmaking Blast Furnace
A mathematical model for the four-phase (gas powder liquid and solids) flow in a two-dimensional ironmaking blast furnace is presented by extending the existing two-fluid flow models. The model describes the motion of gas solid and powder phases based on the continuum approach and implements the so-called force balance model for the flow of liquids such as metal and slag in a blast
Get PriceInfluence of bed particle size on gas- powder two phase
Figure 1 presents physical model of the two –phase gaspowder flow through the moving (descending) packed bed. Descending bed (Fig. 2) was placed in the PCV column of an inside diameter of 196 mm and height of 1 m. Air was used as a gas that is fed to the system with constant volume flow
Get PriceSlug flow in a blast furnace tapholeCORE
The splashy flow observed by He et al. Q. He P. Zulli F. Tanzil B. Lee J. Dunning G.M. Evans Flow characteristics of a blast furnace taphole stream and its effects on trough refractory wear ISIJ Int. 42 (2002) may be simply predicted by reference to a two-phase flow regime map.
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