New Monitoring System of Firebrick Lining Deterioration of Blast Furnace Devil in Metallurgical Plants of China

2013 ◽  
Vol 834-836 ◽  
pp. 939-943 ◽  
Author(s):  
Andrey N. Dmitriev ◽  
Yu.A. Chesnokov ◽  
K. Chen ◽  
O. Yu. Ivanov ◽  
M.O. Zolotykh
Keyword(s):  
Blast Furnace ◽  
Temperature Fields ◽  
Continuous Control ◽  
Two Dimensional ◽  
Blast Furnaces ◽  
Furnace Hearth ◽  
Horizontal Section ◽  
Iron And Steel ◽  
Blast Furnace Hearth ◽  
Iron And Steel Works

The mathematical description and the computer program Devil Erosion of calculation the two-dimensional temperature fields in any vertical and horizontal section of the blast furnace hearth are developed. Calculation is carry out the decision of the equations of heat conductivity with use of indications of the big number of sensing transducers of temperature (to 1000), built in the furnaces firebrick lining between the firebrick blocks. The continuous control of the temperature change in each point allows to define the remained thickness the firebrick lining and to warn, in case of need, the furnace personnel about the beginning of the firebrick lining erosion. The continuous control of change of temperature in the firebrick lining is made on the basis of mathematical model. The system of collecting, processing and transfer information from sensing transducers of temperature or thermal streams in a program database Devil Erosion is used. Programs are installed on blast furnaces of Chinese National Republic: Jinan, Jiyuan and Liuzhou Iron and Steel Works.

New Monitoring System of the Refractory Lining Wear in the Blast Furnace Hearth

2014 ◽  
Vol 670-671 ◽  
pp. 1274-1284 ◽  
Author(s):  
Andrey N. Dmitriev ◽  
Maxim O. Zolotykh ◽  
Yury A. Chesnokov ◽  
Kai Chen ◽  
Oleg Yu. Ivanov ◽  
...  
Keyword(s):  
Blast Furnace ◽  
Monitoring System ◽  
Information Transfer ◽  
Refractory Lining ◽  
Temperature Fields ◽  
Blast Furnaces ◽  
Furnace Hearth ◽  
Horizontal Cross Section ◽  
Blast Furnace Hearth ◽  
The Devil

The monitoring system of the firebrick lining state of the blast furnace devil is offered. The mathematical description, algorithm and program of calculation the temperature fields in any vertical and horizontal cross-section of the devil lining are developed with use of the indications of the temperature sensing transducer (to 1000) in the oven lining. The systems of gathering, processing and information transfer from the temperature transmitters to a program database are used. This monitoring system is established on five blast furnaces of metallurgical plants of China.

scholarly journals Experimental Model Study of Liquid–Liquid and Liquid–Gas Interfaces during Blast Furnace Hearth Drainage

Metals ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 496 ◽  
Author(s):  
Weiqiang Liu ◽  
Lei Shao ◽  
Henrik Saxén
Keyword(s):  
Blast Furnace ◽  
Furnace Operation ◽  
Slag Viscosity ◽  
Two Dimensional ◽  
Furnace Hearth ◽  
Breakthrough Time ◽  
Initial Amount ◽  
Blast Pressure ◽  
Blast Furnace Hearth ◽  
Model Study

The smooth drainage of produced iron and slag is a prerequisite for stable and efficient blast furnace operation. For this it is essential to understand the drainage behavior and the evolution of the liquid levels in the hearth. A two-dimensional Hele–Shaw model was used to study the liquid–liquid and liquid–gas interfaces experimentally and to clarify the effect of the initial amount of iron and slag, slag viscosity, and blast pressure on the drainage behavior. In accordance with the findings of other investigators, the gas breakthrough time increased and residual ratios for both liquids decreased with an increase of the initial levels of iron and slag, a decrease in blast pressure, and an increase in slag viscosity. The conditions under which the slag–iron interface in the end state was at the taphole and not below it were finally studied and reported.

scholarly journals Comparative technological analysis of control systems of blast furnace hearth lining deterioration

2018 ◽  
pp. 82-91 ◽  
Author(s):  
A. N. Dmitriev ◽  
M. O. Zolotykh ◽  
K. Chen' ◽  
G. Yu. Vit'kina
Keyword(s):  
Blast Furnace ◽  
Temperature Distribution ◽  
Sampling Theorem ◽  
Furnace Lining ◽  
Continuous Control ◽  
Furnace Hearth ◽  
Calculation Algorithm ◽  
Blast Furnace Hearth ◽  
Residual Thickness ◽  
Hearth Lining

For safe and effective operation of a blast furnace it is important to know the residual thickness of the blast furnace hearth lining any time, first of all the location of the damaged arears. Use of traditional methods of hearth and bottom lining control often lead to a mistaken diagnostics.Institute of metallurgy of Ural branch of RussianacademyofScienceselaborated a mathematical model, providing a 3-dimentional estimation of the lining status and optimization of calculations for operation in real time mode.The calculation is done by solving equations of heat conductivity by usage of a number of temperature sensors (up to 700), implemented into furnace lining between refractory blocks. Calculation algorithm was modified by application of sampling theorem to take into account the complex profile of the blast furnace lower part. A system of information collection, processing and passing used from the sensors to program data base. A continuous control of temperature variation in every point enables to determine a current lining refractory thickness and notify the furnace personal in advance about beginning of the lining erosion. The elaborated program interface enables the furnace foreman to use additional control functions, in particular, the residual lining thickness, including: direct visualization of the status and tendencies of the erosion change, temperature distribution in every point of the lining at computer monitor, signaling about dangerous zone; volume temperature distribution (isotherms) and tendencies of their changes. The interface languages available as following: Chinese, English, Russian. 

The Determination of Thermocouples Optimum Number in the Blast Furnace Hearth for Control of its Condition

2015 ◽  
Vol 741 ◽  
pp. 302-308 ◽  
Author(s):  
Andrey N. Dmitriev ◽  
Maxim O. Zolotykh ◽  
Yury A. Chesnokov ◽  
Oleg Yu. Ivanov ◽  
Galina Yu. Vitkina
Keyword(s):  
Blast Furnace ◽  
Temperature Sensors ◽  
Temperature Sensitive ◽  
Optimum Number ◽  
Blast Furnaces ◽  
Furnace Hearth ◽  
Republic Of China ◽  
Blast Furnace Hearth ◽  
Low Degree

The algorithm of a sensors arrangement in the blast furnace laying taking into account classification and the indications analysis of doubtful temperature sensors in 5 blast furnaces of the People's Republic of China is developed. When developing algorithm the adaptation of an arrangement of temperature-sensitive elements in a laying to the developed mathematical model of a laying heat [1, 2] for the purpose of minimization of their quantity and increase in reliability of indications at the expense of increase of density of their arrangement in the most dangerous zones of a laying and an exception of superfluous sensors in the zones being characterized by low degree of wear. The scheme of an arrangement of thermocouples for the blast furnace in volume of 5100 m3 is offered.

The Thermophysical Bases of Monitoring of the Fireproof Lining Wear in the Blast Furnace Hearth

2017 ◽  
Vol 370 ◽  
pp. 113-119 ◽  
Author(s):  
Andrey N. Dmitriev ◽  
M.O. Zolotykh ◽  
K. Chen ◽  
Galina Yu. Vitkina
Keyword(s):  
Blast Furnace ◽  
Heat Conduction Equation ◽  
Refractory Lining ◽  
Refractory Materials ◽  
Two Dimensional ◽  
Furnace Hearth ◽  
Differential Heat ◽  
Blast Furnace Hearth ◽  
The Mathematical Model ◽  
Optimal Quantity

This paper presents a two-dimensional description of the temperature field in refractory lining of the hearth in the blast furnace. The mathematical model is based on Fourier differential heat conduction equation. Different solutions of this equation are presented and the optimal quantity and location of thermosensors in the hearth is proposed. This paper also presents a methodology to obtain the heat conductivity of refractory materials.

A Model to Simulate Titanium Behavior in the Iron Blast Furnace Hearth

2010 ◽  
Vol 41 (4) ◽  
pp. 876-885 ◽  
Author(s):  
Bao-Yu Guo ◽  
Paul Zulli ◽  
Daniel Maldonado ◽  
Ai-Bing Yu
Keyword(s):  
Blast Furnace ◽  
Furnace Hearth ◽  
Blast Furnace Hearth ◽  
Iron Blast Furnace
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