Efficient Utilization of Stainless Steel Dust and Chromium-Containing Slag by Carbothermal Direct Reduction: Synergistic Mechanism and Optimization Analysis

Liu, Peijun; Liu, Zhenggen; Chu, Mansheng; Yan, Ruijun; Li, Feng; Tang, Jue; Feng, Jinge

doi:10.1007/s40831-022-00610-z

Cited by 3 publications

(4 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similarly, it will reduce the intake of energy and coke. [113][114][115][116] Some studies have reported the different methods of pyrometallurgical metal recovery from industrial wastewater sludge, [117][118][119][120][121][122] including Waelz, Inmetco, Z-Star, and plasma methods. The summary of the characteristics of applied methods is tabulated in Table 5.…”

Section: Other Recovery Processes (Pyrometallurgical Treatment)mentioning

confidence: 99%

An overview of metals extraction and recovery from industrial wastewater sludge

Al‐Mutair,

Kumar,

Al‐Mur

et al. 2024

Can J Chem Eng

View full text Add to dashboard Cite

Industrial wastewater sludge is one of the vital sources of metals, including heavy metals, valuable metals, and precise metals. Apart from metals' necessity and economic value, some are toxic and harmful to the environment. This review explores the technologies currently applied for extracting and recovering heavy metals from industrial wastewater sludge. The technologies have been explained, and the merits and demerits of methods, as reported in past investigations, have been highlighted. The salient findings of this review are that the hydrometallurgical processes using acid leaching (H2SO4, HNO3, HCl, etc.) have been considered for the metal extraction process. Metal dissolution, concentration/purification, and recovery are the main stages of hydrometallurgical processes. The selection of successive metal recovery methods depends on the concentration of metals and chemical characteristics of industrial wastewater sludge. Different metal purification and concentrations were reported, including adsorption, ion exchange solvent extraction, and so forth, while precipitation and electrodeposition were mainly applied for metal recovery from industrial wastewater sludge. In this review, the cost and economic viability of the metal recovery process are also evaluated by previous reported studies. This review may be considered a valuable source of information for environmentally friendly and cost‐effective methods for metal recovery from industrial wastewater sludge.

show abstract

Section: Other Recovery Processes (Pyrometallurgical Treatment)mentioning

confidence: 99%

An overview of metals extraction and recovery from industrial wastewater sludge

Al‐Mutair,

Kumar,

Al‐Mur

et al. 2024

Can J Chem Eng

View full text Add to dashboard Cite

show abstract

“…Most of the slag particles are about 10~200 µm in size and angular in shape, and they have stable mechanical properties [50,51]. The specific surface area and density of EAF slag are 2025~2225 cm 2 /g and 3.10~3.19 g/cm 3 , respectively [52,53]. The AOD slag is dusty due to its easy pulverization during the cooling process.…”

Section: Stainless Steel Dustmentioning

confidence: 99%

“…When stainless steel dust and chromium-containing slag are smelted together, the recovery ratio of the metal can also reach more than 90%. Simultaneously, it can reduce the consumption of coke and energy [3,11,34,73].…”

Section: (1) Pyrometallurgical Processmentioning

confidence: 99%

“…The iron and steel industry is a worldwide pillar industry that plays an irreplaceable role in the development of the worldwide economy [1,2]. The steelmaking process is accompanied by the production of a large amount of solid waste, which contains valuable components [3,4]. Chromium-containing metallurgical solid wastes originate from the production of stainless steel and ferrochrome alloys, which include stainless steel dust, stainless steel slag, ferrochrome dust, and ferrochrome slag.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Valuable Recovery Technology and Resource Utilization of Chromium-Containing Metallurgical Dust and Slag: A Review

Xu,

Liu,

et al. 2023

Metals

View full text Add to dashboard Cite

As a type of metallurgical solid waste with a significant output, chromium-containing metallurgical dust and slag are gaining increasing attention. They mainly include stainless steel dust, stainless steel slag, ferrochrome dust, and ferrochrome slag, which contain significant amounts of valuable elements, such as chromium, iron, and zinc, as well as large amounts of toxic substances, such as hexavalent chromium. Achieving the harmless and resourceful comprehensive utilization of chromium-containing metallurgical dust and slag is of great significance to ensuring environmental safety and the sustainable development of resources. This paper outlines the physicochemical properties of stainless steel dust, stainless steel slag, ferrochrome dust, and ferrochrome slag. The current treatment technologies of chromium-containing metallurgical dust and slag by hydrometallurgy, the pyrometallurgical process, and the stabilization/solidification process are introduced. Moreover, the comprehensive utilization of resources of chromium-containing metallurgical dust and slag in the preparation processes of construction materials, glass ceramics, and refractories is elaborated. The aim of this paper is to provide guidance for exploring effective technology to solve the problem of chromium-containing metallurgical dust and slag.

show abstract