Gas Cleaning and Waste Heat Recovery Solutions for Integrated Steel Plants and Mini Mills — State-of-the-Art Technologies and Latest References

Fleischanderl, A.; Steinpazer, T.; Trunner, P.

doi:10.33313/382/137

Cited by 2 publications

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“…The working principles and status of the aforementioned DSG examples have been well reviewed by Barati et al [8] and Zhang et al [1] Notably, centrifugalgranulation-assisted thermal energy recovery (CGATER) is gaining the spotlight for its potential to recover the heat from BF slag without hampering the hydrate activity of BF slag. [9][10][11] The CGATER has been intensively tested at laboratory [9] and more recently, important CGATER trials were carried out at pilot scales in Australia, [12,13] Europe, [14] and China. These preeminent efforts make the CGTAER stand out from the available DSG methods; it is regarded as the leading technology for low-carbon slag treatment in the iron making industry.…”

Section: Introductionmentioning

confidence: 99%

High‐Temperature Thermophysical Property Characterization of Molten Blast Furnace Slag: A Critical Reviews

Liu

et al. 2023

steel research int.

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Centrifugal granulation‐assisted thermal energy recovery (CGATER) remains the leading technology for the iron and steel industry to enable the low‐carbon treatment of high‐temperature blast furnace (BF) slag. Accurate knowledge of the thermophysical properties of BF slag is pivotal for the commercialization of the CGATER. However, it presents a formidable task to obtain these quantities due to the extremely high temperature of molten BF slag (≈1500 °C). To date, the thermophysical properties of BF slag have not been well characterized yet. Herein, five typical thermophysical properties including density, viscosity, surface tension, thermal conductivity, and emissivity are scrutinized with emphasis on the experimental measurements and empirical estimates. The working principles of these measurement methods are briefly overviewed and their merits and demerits are highlighted. It is noted that density, viscosity, and surface tension have been intensively studied; the quantities can be estimated with moderate uncertainty. However, the thermal conductivity and emissivity of BF slag are less tackled, mainly because of the scarcity of measurement tools at high temperatures. In the future, innovative measurement tools tailored for high‐temperature materials are essential, not only for enriching the thermophysical property database of BF slag but also for paving the way toward characterizing other complex high‐temperature melts.

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Section: Introductionmentioning

confidence: 99%

High‐Temperature Thermophysical Property Characterization of Molten Blast Furnace Slag: A Critical Reviews

Liu

et al. 2023

steel research int.

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“…Since then, many efforts have been undertaken to understand the fundamental physics of centrifugal granulation, [14,15] slag granule cooling, [16,17] and heat transfer of slag granules. [18,19] More recently, some pilot-scale CGATER plants have been demonstrated in Australia, [20] Europe, [21] and China. These pilot-scale trials pave the way toward the industrialization of CGATER technology.…”

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confidence: 99%

Exploiting the Molten Slag to Decarbonize Iron and Steel Industry: Feasibility Analysis of Centrifugal Granulation‐Assisted Thermal Energy Recovery System beyond Pilot Scale

Wang

Zhu

et al. 2022

steel research int.

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Waste heat recovery from molten blast furnace slag at ≈1500 °C represents new opportunities for slag valorization. This is now gaining the spotlight but still remains a grand challenge in the iron and steel industry (ISI). To address this issue, centrifugal granulation‐assisted thermal energy recovery (CGATER) is proposed and is regarded as the leading slag treatment technology. The CGATER provides a viable alternative to exploiting the waste heat in molten slag. Yet, large‐scale implementation of CGATER is little explored beyond laboratory‐scale tests. The fate of CGATER toward future commercialization is rarely considered and analyzed, either qualitatively or quantitatively. This work intends to provide, for the first time, a paradigm of a commercial‐scale CGATER prototype, which allows for slag treatment with a rated throughput of 36 t‐slag h−1. The feasibility of commercial‐scale CGATER with a comprehensive scrutinization of its energy, resource, and environment flows is analyzed. The CGATER prototype demonstrates attractive attributes of 1) being nearly water free and 2) suppressing sulfur‐related emissions, although with higher energy consumption than the water quenching method. This work provides not only an inclusive figure of CGATER design but also sheds light on the feasibility of CGATER commercialization to decarbonize ISI.

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Gas Cleaning and Waste Heat Recovery Solutions for Integrated Steel Plants and Mini Mills — State-of-the-Art Technologies and Latest References

Cited by 2 publications

References 0 publications

High‐Temperature Thermophysical Property Characterization of Molten Blast Furnace Slag: A Critical Reviews

High‐Temperature Thermophysical Property Characterization of Molten Blast Furnace Slag: A Critical Reviews

Exploiting the Molten Slag to Decarbonize Iron and Steel Industry: Feasibility Analysis of Centrifugal Granulation‐Assisted Thermal Energy Recovery System beyond Pilot Scale

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