Recent Advances in Green Metallurgy

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Extractive Metallurgy".

Deadline for manuscript submissions: closed (31 October 2023) | Viewed by 3397

Special Issue Editors


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Guest Editor
School of Metallurgy, Northeastern University, Shenyang, China
Interests: resource utilization of metallurgical by-products; recycling of steelmaking slag; hot metal dephosphorization; phosphate recovery

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Co-Guest Editor
School of Metallurgical Engineering, Anhui University of Technology, Maanshan, China
Interests: utilization of industrial solid wastes; green steelmaking process; life cycle assessment of environmental materials

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Co-Guest Editor
School of Engineering, Westlake University, Hangzhou, China
Interests: extractive metallurgy; environmental science and engineering

Special Issue Information

Dear Colleagues,

BOF steelmaking slag is the major by-product of the converter steelmaking process and contains large quantiles of valuable components. Currently, the global production of BOF steelmaking slag has exceeded 150 million tons annually. BOF steelmaking slag is primarily used in road construction, civil engineering, and landfill, but its potential value has not been fully developed, resulting in a huge waste of resources. With the depletion of natural resources and the deterioration of the environment, the recovery of valuable elements and heat from BOF steelmaking slag is attracting more and more attention. The comprehensive utilization of BOF steelmaking slag has become an urgent problem that must be solved for a low-carbon and sustainable steelmaking process.

In recent years, promising technologies for utilizing BOF steelmaking slag have been studied and developed, such as heat recovery from molten slag, phosphorus recovery, recycling as flux agents, slag fertilizer, and the rehabilitation of coastal environments.

In this Special Issue, we welcome articles that focus on the current state-of-the-art ideas, methods, technologies, equipment, and theories for the efficient utilization of BOF steelmaking slag. It is aimed to promote the development of a circular economy and improve resource utilization efficiency in steel plants.

Dr. Chuanming Du
Dr. Ningning Lv
Dr. Xiao Yang
Guest Editors

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Keywords

  • valuable elements recovery
  • comprehensive utilization
  • recycling
  • slag treatment and modification
  • thermodynamics
  • physicochemical properties
  • heat recovery
  • sustainable metallurgy

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Published Papers (1 paper)

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Research

15 pages, 8450 KiB  
Article
Fundamental Study on Electric Arc Furnace Steelmaking with Submerged Carbon Powder Injection with CO2-O2 Mixed Gas
by Jianjun Li, Guangsheng Wei and Chengjin Han
Metals 2023, 13(9), 1602; https://doi.org/10.3390/met13091602 - 15 Sep 2023
Viewed by 2951
Abstract
The technology of submerged carbon powder injection with CO2 and O2 mixed gas (SCPI-COMG) is a new type of powder injection technology. It can increase the molten bath carbon content and improve the molten steel quality by injecting carbon powder directly [...] Read more.
The technology of submerged carbon powder injection with CO2 and O2 mixed gas (SCPI-COMG) is a new type of powder injection technology. It can increase the molten bath carbon content and improve the molten steel quality by injecting carbon powder directly into the molten steel with CO2 and O2 mixed gas. To optimize the process parameters of this novel technology, the mechanism of this technology and the effect of SCPI-COMG on EAF steelmaking were investigated in this study. Based on an induction furnace experiment, the effects of molten bath carburization and fluid flow on the scrap melting were analyzed. A mathematical model of the axis of gas jets in liquid steel was built to analyze the impact behaviors of gas jets in liquid steel. Based on the results of this theoretical model, for a gas jet in liquid steel, with α ≥ 20°, the horizontal inject distance decreases with α increasing and with 0° ≤ α ≤ 20°, the horizontal inject distance increases with α increasing. Finally, based on the newly built materials and energy balance model of EAF steelmaking with SCPI-COMG, the influences of the gas-solid parameters on the EAF steelmaking technical indexes were also analyzed.is very useful for optimizing the process parameters of EAF steelmaking with SCPI-COMG. The results of this study are very useful to optimize the process parameters of EAF steelmaking with SCPI-COMG of Gas Jet in Liquid Steel. Full article
(This article belongs to the Special Issue Recent Advances in Green Metallurgy)
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