Analyses and Calculation of Steel Scrap Melting in a Multifunctional Hot Metal Ladle

2018 ◽  
Vol 90 (3) ◽  
pp. 1800435 ◽  
Author(s):  
Shuai Deng ◽  
Anjun Xu ◽  
Guang Yang ◽  
Hongbing Wang
Keyword(s):  
Steel Scrap ◽  
Hot Metal ◽  
Scrap Melting ◽  
Hot Metal Ladle

scholarly journals Diffusive steel scrap melting in carbon-saturated hot metal—phenomenological investigation at the solid–liquid interface

Materials ◽  
2019 ◽  
Vol 12 (8) ◽  
pp. 1358 ◽  
Author(s):  
Penz ◽  
Schenk ◽  
Ammer ◽  
Klösch ◽  
Pastucha ◽  
...  
Keyword(s):  
Boundary Layer ◽  
Carbon Concentration ◽  
Steel Production ◽  
Production Optimization ◽  
Steel Scrap ◽  
Process Conditions ◽  
Hot Metal ◽  
Scrap Melting ◽  
Solid Liquid Interface ◽  
Solid Liquid

The oxygen steelmaking process in a Linz-Donawitz (LD) converter is responsible for more than 70% of annual crude steel production. Optimization of the process control and numerical simulation of the LD converter are some of the current challenges in ferrous metallurgical research. Because of the process conditions and oxidation of impurities of the hot metal, a lot of chemical heat is generated. Therefore, steel scrap is charged as a coolant with the economical side aspect of its recycling. One of the more complex aspects is, among others, the dissolution and melting behaviour of the scrap in carbon-saturated hot metal. Heat and mass transfer act simultaneously, which has already been investigated by several researchers using different experimental approaches. The appearances at the interface between solid steel and liquid hot metal during diffusive scrap melting have been described theoretically but never investigated in detail. After an experimental investigation under natural and forced convective conditions, the samples were further investigated with optical microscopy and electron probe microanalysis (EPMA). A steep carbon concentration gradient in the liquid appeared, which started at an interface carbon concentration equal to the concentration on the solid side of the interface. Moreover, the boundary layer thickness moved towards zero, which symbolized that the boundary layer theory based on thermodynamic equilibrium was not valid. This fact was concluded through the prevailing dynamic conditions formed by natural and forced convection.

Exploration of new quality refractory to improve hot metal ladle refractory performance

2021 ◽  
Vol 125 ◽  
pp. 105384
Author(s):  
Moumita Nag ◽  
Biswanath Nag ◽  
Saumita Gangopadhyay ◽  
Prasanta Panigrahi ◽  
Brijender Singh
Keyword(s):  
Hot Metal ◽  
Hot Metal Ladle ◽  
Ladle Refractory

Finite Element Analysis of 100 t Hot Metal Ladle in Process of Tipping

2010 ◽  
Vol 17 (11) ◽  
pp. 19-23 ◽  
Author(s):  
Hong-yu Tian ◽  
Fu-rong Chen ◽  
Rui-jun Xie ◽  
Shi-hui Li
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Hot Metal ◽  
Element Analysis ◽  
Hot Metal Ladle

Influence of clogging of a T-shaped desulfurization lance on the flow field in a hot metal ladle

2019 ◽  
Vol 116 (3) ◽  
pp. 301 ◽  
Author(s):  
Wenjun Ma ◽  
Haibo Li ◽  
Jun Zhang ◽  
Yang Cui ◽  
Liang Sun
Keyword(s):  
Flow Field ◽  
Dead Zone ◽  
Injection Pressure ◽  
Hole Injection ◽  
Hot Metal ◽  
Injection Hole ◽  
Industrial Experiments ◽  
The Difference ◽  
Active Flow ◽  
Hot Metal Ladle

Lance injected desulphurization become ineffective when injection ports become obstructed. In this work, the difference of the flow fields between single and double hole injection was investigated by numerical simulations. When one of the openings in a T-shaped injection lance is blocked, a dead zone occurs in the ladle over approximately 1/4th of the volume, and there is not an active flow field on the surface of clogging side. To decrease clogging, industrial experiments examining different diameter lances were carried out. The results showed that clogging can be reduced by increasing the injection pressure and optimizing the injection hole diameter to be approximately 10 times the particle size of desulphurizer.

A Review of Steel Scrap Melting in Molten Iron‐Carbon Melts

2019 ◽  
Vol 90 (8) ◽  
pp. 1900124 ◽  
Author(s):  
Florian M. Penz ◽  
Johannes Schenk
Keyword(s):  
Molten Iron ◽  
Steel Scrap ◽  
Scrap Melting

Optimization of Co-Injection Desulfurization of Vanadium Bearing Hot Metal

2017 ◽  
Vol 744 ◽  
pp. 239-243
Author(s):  
Yong Hui Han ◽  
Da Qing Cang ◽  
Wen Bin Dai
Keyword(s):  
Sulfur Content ◽  
Process Parameters ◽  
Injection Rate ◽  
Metal Temperature ◽  
Hot Metal ◽  
Hit Rate ◽  
End Point ◽  
Optimization Of Process Parameters ◽  
Hot Metal Ladle ◽  
Ti Content

The desulphurization process parameters of vanadium bearing hot metal were optimized. It is found that it has the best desulfurization effect in 100t hot metal ladle, when the lance position is 280mm, the ratio of lime to Mg is 3:1, and the Mg injection rate is 9kg/min. The Si and Ti content of hot metal can increase the activity of S. With the increase of Si and Ti content of hot metal, the final sulfur content has a reduction trend. When the content of Si and Ti is lower than 0.35%, the final sulfur content of hot metal increases, and the hit rate decreases. The effect of hot metal temperature on desulfurization end point hit rate is obvious. When the hot metal temperature is between 1300~1320°C, the hit rate of desulfurization end point is higher. When the temperature is below 1300°C or above 1320°C, the sulfur content increases. After optimization of process parameters, the Mg and lime consumption per ton of hot iron are reduced by 0.11kg and 0.54kg, respectively, with the average hit rate of desulfurization end point increased by 22.6% and 10.7%, respectively.

Kinetics of Steel Scrap Melting in Molten Fe-C Bath

2000 ◽  
Vol 19 (3-4) ◽  
pp. 241-256 ◽  
Author(s):  
Liviu C. Brabie, ◽  
Masahiro Kawakami,
Keyword(s):  
Steel Scrap ◽  
Scrap Melting ◽  
Kinetics Of
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