Experimental study on accelerometer-based ladle slag detection in continuous casting process

Güvenç, Mehmet Ali; Kapusuz, Hakan; Mıstıkoğlu, Selçuk

doi:10.1007/s00170-019-04830-8

Cited by 16 publications

(4 citation statements)

References 21 publications

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“…Usually, the detection of slag has been carried out by a human operator, but due to hard process conditions, methods have been developed to carry out this task automatically. Mainly the use of accelerometers [9] has been used to measure the vibration generated by the flow of molten steel, in the method proposed in [10] the frequency domain and time domain analysis of the vibration signal acquired by accelerometers and sensors electromagnetic. Similarly, in [11] the analysis of the frequency spectrum is proposed by means of the discrete wavelet transform, in addition, experimentation based on probabilistic methods has been carried out, such as the proposal made in [12], where the authors measure vibration due to the Density difference between steel and slag, the vibrations caused by this effect, are evaluated with the Markov hidden model statistical method.…”

Section: Related Workmentioning

confidence: 99%

Feature Descriptors Applied to Slag Characterization on Casting Process

Romero-González¹,

Herrera-Navarro²,

Jiménez-Hernández³

et al. 2020

IJISME

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Vision systems are increasingly entering the field of metallurgy, carrying out operations where a human operator is not possible due to the process conditions. The purpose of these systems is the monitoring and control of the process to improve the quality and manufacturing of the products. Nevertheless, the amount of slag, the presence of gases and high temperatures are the main problems that make this task difficult. In this proposal the characterization of the slag is treated, through the analysis of the light changes with the functions of Fourier and Gabor, which allow to identify or locate the location of the slag in the material, so that, in future works the slag It can be segmented, measured or used to detect the level of the metal in the refractory. In addition, results obtained when evaluating sensitivity and precision curves are presented, with which the information recovered by the algorithms is evaluated.

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Section: Related Workmentioning

confidence: 99%

Feature Descriptors Applied to Slag Characterization on Casting Process

Romero-González¹,

Herrera-Navarro²,

Jiménez-Hernández³

et al. 2020

IJISME

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“…Further, fossil fuel reserves are delimited and are eventually predicted to run out. As a result, it is crucial to lessen reliance on fossil fuels while boosting the effectiveness of energy infrastructure [7,8]. Combined cycles can assist in achieving such objectives by increasing net electrical power output, decreasing fuel consumption, and enhancing efficiency [9].…”

Section: Introductionmentioning

confidence: 99%

Exergo–Economic and Parametric Analysis of Waste Heat Recovery from Taji Gas Turbines Power Plant Using Rankine Cycle and Organic Rankine Cycle

Kareem,

Akroot,

Abdul Wahhab

et al. 2023

Sustainability

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This study focused on exergo–conomic and parametric analysis for Taji station in Baghdad. This station was chosen to reduce the emission of waste gases that pollute the environment, as it is located in a residential area, and to increase the production of electric power, since for a long time, Iraq has been a country that has suffered from a shortage of electricity. The main objective of this work is to integrate the Taji gas turbine’s power plant, which is in Baghdad, with the Rankine cycle and organic Rankine cycle to verify waste heat recovery to produce extra electricity and reduce emissions into the environment. Thermodynamic and exergoeconomic assessment of the combined Brayton cycle–Rankine cycle/Organic Rankin cycle (GSO CC) system, considering the three objective functions of the First- and Second-Law efficiencies and the total cost rates of the system, were applied. According to the findings, 258.2 MW of power is produced from the GSO CC system, whereas 167.3 MW of power is created for the Brayton cycle (BC) under the optimum operating conditions. It was demonstrated that the overall energy and exergy efficiencies, respectively, are 44.37% and 42.84% for the GSO CC system, while they are 28.74% and 27.75%, respectively, for the Brayton cycle. The findings indicate that the combustion chamber has the highest exergy degradation rate. The exergo–economic factor for the entire cycle is 37%, demonstrating that the cost of exergy destruction exceeds the cost of capital investment. Moreover, the cost of the energy produced by the GSO CC system is USD 9.03/MWh, whereas it is USD 8.24/MWh for BC. The results also indicate that the network of the GSO CC system decreases as the pressure ratio increases. Nonetheless, the GSO CC system’s efficiencies and costs increase with a rise in the pressure ratio until they reach a maximum and then decrease with further pressure ratio increases. The increase in the gas turbine inlet temperature and isentropic efficiency of the air compressor and gas turbine enhances the thermodynamic performance of the system; however, a further increase in these parameters increases the overall cost rates.

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“…[4] To prevent slag entrainment induced by the vortex, a slag detecting device is currently positioned primarily under the ladle nozzle, and the slide gate is closed in response to the detection signal. [5,6] However, this procedure results in an excessive amount of residual molten steel and a lower molten steel yield. The residual molten steel is around 9 t when a 300 t ladle is managed by this method, increasing the cost per ton of steel.…”

Section: Introductionmentioning

confidence: 99%

Optimizing Design of Vortex Suppression Utilizing Static Electromagnetic Field during Steel Teeming from Ladle

Zhao

et al. 2022

steel research int.

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Vortex slag entrapment during ladle teeming process causes liquid steel pollution, nozzle clogging, etc. Tangential velocity of molten steel is directly related to the vortex. Herein, the tangential velocity is reduced by the electromagnetic force generated by the interaction between a static electromagnetic field and the molten steel. Through the multiphysical field simulation, influences of the electromagnetic parameter, coil structure, coil position, and ladle structure on the vortex are investigated. Results demonstrate that magnetic induction intensity is proportional to the coil ampere‐turns, thereby affecting the vortex suppression. The action region of the static electromagnetic field expands when the coil diameter increases from 180 to 360 mm; it is beneficial to reduce the vortex critical height by 37.9%. The reduction of the distance between the coil and the molten steel also promotes the vortex suppression. The coil misalignment is beneficial to fully utilize the electromagnetic field; the critical height is reduced by 15%. The tangential velocity is changed when the nozzle diameter and eccentricity are optimized, and the vortex suppression will be amplified by using the electromagnetic field. This study provides the theoretical guidance for the optimizing design of the vortex suppression utilizing the static electromagnetic field.

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Experimental study on accelerometer-based ladle slag detection in continuous casting process

Cited by 16 publications

References 21 publications

Feature Descriptors Applied to Slag Characterization on Casting Process

Feature Descriptors Applied to Slag Characterization on Casting Process

Exergo–Economic and Parametric Analysis of Waste Heat Recovery from Taji Gas Turbines Power Plant Using Rankine Cycle and Organic Rankine Cycle

Optimizing Design of Vortex Suppression Utilizing Static Electromagnetic Field during Steel Teeming from Ladle

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