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

Abstract

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.

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

“…Figure 2. Results of temperature modelling for blast furnace hearth (furnace bulk is 1800 m 3 ) [1] Thus, all three described approaches possess essential disadvantages, the individual elimination of which is complicated. Therefore, combining all three methods is proposed in the present work, as their respective strengths compensate for their weaknesses.…”

“…The mathematical model constructed on the basis of measuring temperatures inside the lining by means of thermoelectric couples (described in [1]) is taken as the base of a complex system of diagnostics. For the solution, the Fourier differential equation is required to know the thermal conduction of materials of a lining.…”

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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.

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Fundamental Investigations as the Basis of Creation of New Materials and Technologies in Metallurgy. Part 1

“…В ИМЕТ УрО РАН разработано аппаратурное оформление и программное обеспечение постоянного контроля разгара огнеупорной футеровки в любой точке горна доменной печи [77], что позволяет увеличить кампанию печи до 20 и более лет, не допуская аварийных ситуаций -прорывов жидкого чугуна. Внедрена разработка на ряде доменных печей Китая по заказу китайской стороны [78].…”

The Estimation of the Thermal Properties of Refractory Materials According to the Temperatures Acceleration Curve at the Blast Furnace Blowing-In

“…The characteristics of materials declared by the manufacturer can differ from the actual. For creation of the mathematical model [1,2] temperatures distributions in a laying of the concrete furnace it is necessary to know thermal conductivity of materials of the specific parties used at construction of the furnace. Definition of the thermal conductivity coefficient allows adapt mathematical model for specific conditions of use.…”