The use of the (γ, n) reaction to measure wear in blast furnaces and other industrial furnaces: comparison with present methods

Staicu, L; Radu, Robert

doi:10.1088/0022-3727/16/12/031

Cited by 3 publications

(2 citation statements)

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“…In the past, varying approaches have been proposed to detect and measure the thickness of hearth linings [ 10 ]. Short half-life radioactive tracers dumped at the top of the furnace have been used to detect the thickness of linings [ 11 , 12 , 13 ]. The failure in the tracer method is that the hearth linings of blast furnaces are nonuniform and refractories with different densities and material properties are utilized in the lining.…”

Section: Introductionmentioning

confidence: 99%

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A Novel Approach for Measuring the Thickness of Refractory of Metallurgical Vessels

Han

et al. 2020

Materials

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The advancement of metallurgical vessels, such as blast furnaces, shaft furnaces, and torpedo ladles, can be better controlled and expanded for a greater lifespan if the thickness of the refractory lining wear is known and predicted. In the past, various methods including radioactive tracers, infrared (IR) thermography, electromagnetic waves, ultrasonic tomography, and temperature field have been tested to determine the thickness of the refractory wall. However, for various reasons, these methods have failed to be effective. This paper presents a novel method—electromotive force (EMF)—for predicting the thickness of refractory lining wear in vessels, including a small-scale vessel in the laboratory, an industrial torpedo ladle, and in the two refining hearths of blast furnaces. The experimental results show that the magnitude of the EMF signal increases with a decrease in wall thickness. Prediction values of the refractory wall thickness are consistent with measured ones. The relative error of EMF measurement for the torpedo ladle is around 6.8%. The EMF measurement of blast furnace hearths is quite accurate, and the relative error is less than 11%.

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Section: Introductionmentioning

confidence: 99%

“…IR thermography has been considered as a method to measure hearth lining wear. However, steel shell oxidization affects the surface emissivity which results in inaccuracies in the IR thermograph measurements [ 13 ]. By detecting electromagnetic waves, such as microwaves [ 14 ] and radar, refractory thickness can be determined.…”

Section: Introductionmentioning

confidence: 99%