Flow Characteristic of Two-Phase Bubble Reactor for Slag
Mar 11 2018 · Abstract. In order to recover the waste heat of molten blast furnace slag a reactor with top-submerged lance was established. The numerical simulation and experiment study of the flow characteristic in the reactor were conducted.
Chat OnlineNumerical modeling of slag flow and heat transfer on the
The slag flow and heat transfer model were modified based on the effective thermal conductivity and viscosity to predict the slag characteristics for the effects of bubbles in slag.
Chat OnlineControl of Gas Bubbles and Slag Layer in a Ladle Furnace
The bubble compression or expansion due to hydrodynamic pressure is modeled by adjust-ing the density and the volume of the bubble while maintaining constant bubble mass. The hydrostatic pressure on the bubble at the porous plug inlet is given by ∆ ∆P g tot =ρ melt h g melt ρ slag ∆h slag (Eq. 2) The local pressure head at any point
Chat OnlineMolten Slag Flow and Phase Transformation Behaviors in a
Oct 20 2010 · For membrane wall coal gasification the liquid slag and solid slag layer increases along the flow and total slag thickness increases as the operating temperature decreases. The velocity profiles and viscosity profiles at different operating temperatures are performed.
Chat OnlineEffect of slag cover on heat loss and liquid steel flow in
Mathematical modeling of transient fluid flow and heat transfer of melt in the ladle has been carried out both before and during teeming of the melt to a tundish. The model involves solution of the transient two-dimensional form of the turbulent Navier-Stokes equation along with the equations of turbulence energy energy dissipation rate of turbulence energy and thermal energy conservation
Chat OnlineFlow Characteristic of Two-Phase Bubble Reactor for Slag
Mar 11 2018 · Abstract. In order to recover the waste heat of molten blast furnace slag a reactor with top-submerged lance was established. The numerical simulation and experiment study of the flow characteristic in the reactor were conducted.
Chat Online05 YAN-X Effect of SEN Conductivity on Meniscus
gap increasing effect of Marangoni flow towards meniscus creased flow and convection mixing in slag layer makes it thicker.Thicker slag layer leads to better slag infiltrati on into meniscus gap more uniform heat transfer and less longitudinal facial cracks. • SEN conductivity has little effect
Chat OnlineFoaming of Slag in Basic Oxygen FurnaceIspatGuru
Jun 06 2020 · The effect of surface tension and the viscosity on the foaming of the slag is such that increase in surface tension destabilizes the foam while the increase in viscosity stabilizes the foam. Hence the combined effect of the above two properties reduces the FI with the increase of temperature. Effect of bubble size on slag foaming
Chat OnlineNumerical Analysis on Flow Behavior of Molten Iron and
2.2. Conservation Equation. For conservation equations the following assumptions were made (1) the chemical reaction thermal radiation and Marangoni effect are ignorable (2) air iron and slag are incompressible fluid (3) the interface of iron-slag in the taphole was kept as a horizontal surface and slag was floated on iron because of lighter density (4) the determination
Chat OnlineA Computational Fluid Dynamic Modeling Study of Slag
fuming kinetics such as gas or slag composition gas blow rate slag temperature viscosity and surface tension on a crucible scale experimental work. In their research Suzuki et al. 5 found that formation of bubbles in the molten slag bath has a great influence on the zinc fuming kinetics. Richards et
Chat OnlineEffect of Ferronickel Slag Powder on Microhydration Heat
Effect of Ferronickel Slag Powder on Microhydration Heat Flow Compressive Strength and Drying Shrinkage of Mortar July 2018 Advances in Civil Engineering 2018(3) 1-7
Chat OnlineSimplified Model for Determining Local Heat Flux Boundary
Effects of the bubbles in slag on slag flow and heat transfer in the membrane wall entrained-flow gasifier. Applied Thermal Engineering 2017 112 . DOI 10.1016/j.applthermaleng.2016.10.141. Xianbin Li Qinghua Guo Shouxian Qiu Guangsuo Yu.
Chat OnlineStudy on the Temperature and Thermal Stress of the Slag
May 03 2011 · Effects of the bubbles in slag on slag flow and heat transfer in the membrane wall entrained-flow gasifier. Applied Thermal Engineering 2017 112 . DOI 10.1016/j.applthermaleng.2016.10.141.
Chat OnlineNumerical study of dynamic response analysis of slag
Dec 15 2018 · The effect of slag physical properties was studies on the slag flow and heat transfer in our previous studies . It can be found that the slag is bubble-containing and the slag behaviors were influenced by the gas volume fraction of bubbles.
Chat OnlineFlow Characteristic of Two-Phase Bubble Reactor for Slag
Mar 11 2018 · Abstract. In order to recover the waste heat of molten blast furnace slag a reactor with top-submerged lance was established. The numerical simulation and experiment study of the flow characteristic in the reactor were conducted.
Chat OnlineEffect of Ferronickel Slag Powder on Microhydration Heat
This paper investigates the effect of ferronickel slag powder on microhydration heat flow compressive strength and drying shrinkage of mortar. In South Korea approximately two million tons of ferronickel slag a by-product of the nickel industry are produced every year. However a considerable amount of this by-product is treated as waste and dumped in landfills.
Chat OnlineEffect of slag cover on heat loss and liquid steel flow in
Mathematical modeling of transient fluid flow and heat transfer of melt in the ladle has been carried out both before and during teeming of the melt to a tundish. The model involves solution of the transient two-dimensional form of the turbulent Navier-Stokes equation along with the equations of turbulence energy energy dissipation rate of turbulence energy and thermal energy conservation
Chat OnlineNumerical modeling of slag flow and heat transfer on the
The slag flow and heat transfer model were modified based on the effective thermal conductivity and viscosity to predict the slag characteristics for the effects of bubbles in slag.
Chat OnlineA Computational Fluid Dynamic Modeling Study of Slag
fuming kinetics such as gas or slag composition gas blow rate slag temperature viscosity and surface tension on a crucible scale experimental work. In their research Suzuki et al. 5 found that formation of bubbles in the molten slag bath has a great influence on the zinc fuming kinetics. Richards et
Chat OnlineDynamics of Rising Bubbles in a Quiescent Slag Bath with
Sep 21 2020 · The motion of bubbles in a liquid slag bath with temperature gradients is investigated by means of 3D fluid dynamic computations. The goal of the work is to describe the dynamics of the rising bubbles taking into account the temperature dependency of the thermo-physical properties of the slag. Attention is paid to the modeling approach used for the slag properties and how this affects the
Chat OnlinePHYSICAL AND COMPUTATIONAL STUDIES OF SLAG
Slag is crystalline mineral matter in either the molten or solid form and is the byproduct of many processes including coal combustion coal gasification and steel manufacturing. In solid form slag is a brittle crystalline structure with dark coloration. Slag often contains entrapped bubbles of gas. These bubbles are entrapped while the slag
Chat OnlineA and xperimental Investigation of Slag ye in as Stirred Ladle
Journal of Fluid Flow Heat and Mass Transfer Volume 5 Year 2018 ISSN into gas bubbles. The rising bubbles break the slag layer and create a slag eye. In this paper the behavior of the slag eye area the effect of gas flow rate on the slag eye formation.
Chat OnlineMathematical Modeling of Thermal-fluid Flow in the
Fig. 2 Temperature field of the mold slag in the meniscus region The heat flow model is run from the steady solution of the fluid flow model to calculate the heat delivered into the mold the temperature field and the melting rate of the solidified slag under time-averaged conditions. In this case the powder / slag
Chat OnlineFoaming of Slag in Electric Arc FurnaceIspatGuru
Jun 17 2020 · The slag foaming phenomenon is dependent on the properties of the slag and the gas evolution rate due to reactions in the slag. Thus to obtain foam in a slag a gas flow is needed. The gas flow is generated when carbon (C) and gaseous oxygen (O2) is added to the slag
Chat OnlineEffects of Mold Current on Slag Skin and Heat Flow
A transient model including the electromagnetic field fluid flow and heat transfer has been developed based on the volume-of-fluid model and dynamic mesh technique. At given power input two cases were simulated to investigate the effects of the mold current on the slag skin and heat flow distribution. The calculated melt rate and slag skin thickness were compared with measurements to
Chat OnlineA and xperimental Investigation of Slag ye in as Stirred Ladle
Journal of Fluid Flow Heat and Mass Transfer Volume 5 Year 2018 ISSN into gas bubbles. The rising bubbles break the slag layer and create a slag eye. In this paper the behavior of the slag eye area the effect of gas flow rate on the slag eye formation.
Chat OnlineFoaming of Slag in Electric Arc FurnaceIspatGuru
Jun 17 2020 · The slag foaming phenomenon is dependent on the properties of the slag and the gas evolution rate due to reactions in the slag. Thus to obtain foam in a slag a gas flow is needed. The gas flow is generated when carbon (C) and gaseous oxygen (O2) is added to the slag
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