Failure Analysis for Blast Furnace Using What If Analysis
Blast furnace produces pig iron from iron ore by reducing action of a carbon at a high temperature in the presence of fluxing agent such as limestone. Iron making blast furnace consists of several zones a crucible shaped hearth at the bottom of the furnace an intermediate zone bosh between hearth and stack. In a blast furnace iron
Get Price
Blast Furnace Hearth Lining Post Mortem Analysis
The #2 blast furnace hearth lining of Companhia Siderurgica Nacional (CSN) are composed graphite refractory blocks. This furnace has an historical rate production of 2.40ton/m 3.day. In 2009 a second partial repair was conducted in order to repair the refractory hearth lining around the tap hole. During
Get Price
SEVERSTAL L-BLAST FURNACE HEARTH REFRACTORIES
"L" Blast Furnace was successfully blown down and quenched between November 2nd the 6th to prepare the furnace for taphole repairs and shotcreting of the furnace stack and belly (see figures 3 and 4). Prior to these events the salamander was tapped and 438 tonnes of hot metal and slag were removed from the furnace.
Get Price
BLAST FURNACE (BF)REFRACTORY LINING PATTERN
Blast FurnaceAn Introduction Blast Furnace is the focus of any integrated steel plant. Blast furnace is used to reduce the iron ore to iron. The charge which consists of iron ore coke and limestone etc. in the form of lumps and different ratios is fed from the top. Air heated in the blast furnace stoves is applied from the bottom of the
Get Price
Wear mechanism for blast furnace hearth refractory lining
Based upon comparative laboratory test results using two carbon materials of different concepts the various reaction mechanisms and enhanced refractory lining deterioration for the blast furnace hearth have been identified. From an understanding of these wear mechanisms acting upon the hearth lining it has been decided to introduce some
Get Price
Refractory Lining and Wear of AC and DC FURNACES
Steel Academy Steel Institute VDEh PO box 104842 40039 Düsseldorf Sohnstraße 65 40237 Düsseldorf Germany Fon 49 211 6707 454 Fax 49 211 6707 655 E-Mail info steel-academy Internet steel-academy
Get Price
Multiphysics Model of the Hearth Lining StateKaymak
Jun 17 2020 · The campaign life of the blast furnace is governed by the erosion of the hearth lining. Therefore it is essential to keep track of the residual lining thickness not only for the better planning of the relining but also for the operational safety to avoid dangerous hearth breakthrough incidences.
Get Price
Multiphysics Model of the Hearth Lining StateKaymak
Jun 17 2020 · The campaign life of the blast furnace is governed by the erosion of the hearth lining. Therefore it is essential to keep track of the residual lining thickness not only for the better planning of the relining but also for the operational safety to avoid dangerous hearth breakthrough incidences.
Get Price
Protection of Blast Furnace Hearth Lining by the Addition
Jun 09 2013 · Protection of Blast Furnace Hearth Lining by the Addition of TiO2 The campaign life extension of a blast furnace (BF) is of a great concern. The necessity of prolonging the campaign of the BF is well known. The campaign life improvement is to be achieved while maintaining high productivity for lowering of the unit capital cost.
Get Price
Numerical analysis of blast furnace hearth inner profile
Jan 01 2008 · Initially there is a protection layer i.e. blow-in lining of 114 mm thickness on the sidewall and the bottom of the hearth for the start-up of the new built blast furnace. During operation the hearth lining will be eroded due to various mechanisms such as chemical reaction between the brick and hot metal and molten slag the alkali and
Get Price
Numerical analysis of blast furnace hearth inner profile
Jan 01 2008 · Initially there is a protection layer i.e. blow-in lining of 114 mm thickness on the sidewall and the bottom of the hearth for the start-up of the new built blast furnace. During operation the hearth lining will be eroded due to various mechanisms such as chemical reaction between the brick and hot metal and molten slag the alkali and
Get Price
Principles for Blast Furnace Refractory Lining Inspection
Blast furnaces are lined by carbon and graphite refractory bricks to protect the integrity of the vessel.
Get Price
Wear mechanism for blast furnace hearth refractory lining
Based upon comparative laboratory test results using two carbon materials of different concepts the various reaction mechanisms and enhanced refractory lining deterioration for the blast furnace hearth have been identified. From an understanding of these wear mechanisms acting upon the hearth lining it has been decided to introduce some
Get Price
Heat Transfer Evolution Process in Hearth Based on Blast
The abnormal erosion of hearth refractories is widely recognized as the main limiting factor for a long blast furnace life. In this paper the embrittlement phenomenon of the hearth lining found in the blast furnace dissection has been described. Combining the migration figure of the thermocouple temperature in the blast furnace hearth the evolution process of the carbon brick erosion and the
Get Price
Monitoring and control of hearth refractory wear to
Refractory wear and skull growth on the hearth walls and the bottom of the blast furnace have been researched. A series of thermocouples were installed in the hearth and the temperature measurements were recorded in a structured query language every minute.
Get Price
The safety thickness of blast furnace hearth lining and
In the late period of the blast furnace operation the residual thickness of the hearth lining is insufficient. To avoid the burning through of hearth intervention measures with variable operating conditions are needed. Plugging wind gap adding Titanium ore and controlling production are frequently used at the scene of the project. A 1-D method is used to determine the safe thickness of the
Get Price
Wear mechanism for blast furnace hearth refractory lining
Wear mechanism for blast furnace hearth refractory lining
Get Price
New concepts and designs for blast furnace linings and
The campaign life duration of a blast furnace is mainly determined by the condition of the refractory lining in heavy-duty zones such as the hearth bosh belly and lower stack. To achieve a desired lifetime the temperature of the lining in these areas thereby proved to be the decisive controllable parameter.
Get Price
Multiphysics Model of the Hearth Lining StateKaymak
Jun 17 2020 · The campaign life of the blast furnace is governed by the erosion of the hearth lining. Therefore it is essential to keep track of the residual lining thickness not only for the better planning of the relining but also for the operational safety to avoid dangerous hearth breakthrough incidences.
Get PriceNumerical analysis of blast furnace hearth inner profile
Jan 01 2008 · Initially there is a protection layer i.e. blow-in lining of 114 mm thickness on the sidewall and the bottom of the hearth for the start-up of the new built blast furnace. During operation the hearth lining will be eroded due to various mechanisms such as chemical reaction between the brick and hot metal and molten slag the alkali and
Get Price
SELECTING LINING MATERIALS TO ACHIEVE LONG AND
SELECTING LINING MATERIALS TO ACHIEVE LONG AND PRODUCTIVE BLAST FURNACE HEARTH CAMPAIGNS1 Peter Sylvén2 Peter L. Duncanson3 4Luís Fontes Abstract When designing engineering and constructing the hearth wall of a blast furnace traditional thinking predicts that the hearth wall will erode to the locations of the 1 150˚C isotherm.
Get Price
Deadman and hearth phenomena in the blast furnace
The deadman has also a significant effect on lining wear and campaign length by controlling hot metal flow in the hearth. Particular observations of hearth behaviour have been made during the last six years. Data of blast furnace operation have been studied and compared with hearth
Get Price
BLAST FURNACE (BF)REFRACTORY LINING PATTERN
Blast FurnaceAn Introduction Blast Furnace is the focus of any integrated steel plant. Blast furnace is used to reduce the iron ore to iron. The charge which consists of iron ore coke and limestone etc. in the form of lumps and different ratios is fed from the top. Air heated in the blast furnace stoves is applied from the bottom of the
Get Price
Experimentally determined temperatures in blast furnace hearth
Jul 18 2013 · Abstract. In this study temperature measurements have been carried out at blast furnace no. 2 at SSAB Oxelösund. The temperature was measured in the hearth lining and at the outer surfaces of the hearth wall and bottom.
Get Price
Analysis of Blast Furnace Hearth Sidewall Erosion and
In recent years there has been increasing emphasis on extending blast furnace (BF) campaign life. 1 2) Procedures have been pursued and BF campaign lives have been steadily increasing. 3 4) Many studies on the relationship between inner hearth condition and BF operating conditions such as heat load molten iron flow the lower boundary level and permeability distribution of deadman in hearth
Get Price
Multiphysics Model of the Hearth Lining StateKaymak
Jun 17 2020 · The campaign life of the blast furnace is governed by the erosion of the hearth lining. Therefore it is essential to keep track of the residual lining thickness not only for the better planning of the relining but also for the operational safety to avoid dangerous hearth breakthrough incidences.
Get Price
Blast Furnace Hearth Lining Post Mortem Analysis
The #2 blast furnace hearth lining of Companhia Siderurgica Nacional (CSN) are composed graphite refractory blocks. This furnace has an historical rate production of 2.40ton/m 3.day. In 2009 a second partial repair was conducted in order to repair the refractory hearth lining around the tap hole. During
Get Price
Practices and Design for Extending the Hearth life in the
Keywords Pyrometallurgy steel hearth blast furnace AbstractThe Mittal Steel Company operates about 36 blast furnaces on four continents. Furnaces range from 1100 m3 to 4800 m3 inner volume. The focus of the group is to push for increasing productivity and increasing campaign life. This
Get Price
Study of structural stability of blast furnace hearth
A ceramic lining with this structure can effectively avoid hot metal and gases penetrating into and then through the joints of the ceramic lining to attack the carbon lining behind. As a result the campaign life of the BF hearth and also the campaign life of the blast furnace would be prolonged.
Get Price
