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

Dmitriev, Andrey N.; Zolotykh, Maxim; Chesnokov, Yury A.; Иванов, О. О.; Vitkina, Galina Yu.

doi:10.4028/www.scientific.net/amm.741.302

Cited by 4 publications

(2 citation statements)

References 6 publications

(16 reference statements)

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“…1-5 show the examples of the interfaces of the program. The technique of definition of optimum quantity and arrangement of thermocouples in the blast furnace hearth lining is developed [5].…”

Section: Resultsmentioning

confidence: 99%

Development and Introduction of Monitoring System of Refractory Lining Wear in Blast Furnace Hearth

Dmitriev¹,

Chen²

2017

JESE-B

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To diagnose the lining condition of the blast furnace hearth during its campaign, are widely used methods based on the analysis of the temperature characteristics of the refractory lining. Measurement of the temperature characteristics is performed by means of a few hundred thermocouples placed inside the refractory lining. The peculiarity of proposed and used mathematical models is a fully three-dimensional assessment of the refractory lining, presence mechanisms of adaptation to the actual thermal conductivity of refractories and optimization calculations to the work in the on-line mode. The new monitoring systems of the lining wear of the blast furnace hearth are established on 5 blast furnaces of integrated iron-and-steel works of China: No.4 by volume 3,200 m 3 of "

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Section: Resultsmentioning

confidence: 99%

Development and Introduction of Monitoring System of Refractory Lining Wear in Blast Furnace Hearth

Dmitriev¹,

Chen²

2017

JESE-B

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“…The methods raise the accuracy of calculations due to an increase in density of placement of sensors in the most problem regions of a lining. But for long operation of such systems, there are problems: destruction of sensors and a decrease in accuracy because of the change of thermal conductivity of lining materials during operation in a severe atmosphere [6].…”

Section: Features Of the Most Popular Methods Of Diagnosticmentioning

confidence: 99%

The Association of Various Approaches to the Monitoring of Lining Condition in the Blast Furnace Hearth

Zolotykh

Dmitriev

Vitkina

2017

DDF

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The problem of an assessment of the monitoring of lining condition in the Blast Furnace hearth during its campaign today has no unambiguous solution. Various techniques for the diagnostics have their own merits and demerits [1]. In this paper, characteristics of the diagnostic methods based on the measurements of temperatures in the lining, heat transfer of the cooling system and acoustic effects are considered. Various techniques can be combined and formulated into a uniform package of the strongest measures.

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

Dmitriev

Zolotykh

Чэнь

et al. 2018

Černaâ metallurgiâ. Bûlletenʹ naučno-tehničeskoj informacii

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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.

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

Cited by 4 publications

References 6 publications

Development and Introduction of Monitoring System of Refractory Lining Wear in Blast Furnace Hearth

Development and Introduction of Monitoring System of Refractory Lining Wear in Blast Furnace Hearth

The Association of Various Approaches to the Monitoring of Lining Condition in the Blast Furnace Hearth

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

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