New understanding on metal recovery of Fe, Ni and Cr during carbon-thermal reduction of stainless steel dust

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

doi:10.1016/j.apt.2021.09.034

Cited by 5 publications

(5 citation statements)

References 29 publications

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“…mately 40 kg of stainless steel dust and 300 kg of stainless steel slag [7,8]. In 2021 yields of stainless steel slag in China and the world were about 10.21 million tons 19.43 million tons, respectively, while the yield of stainless steel dust reached about million tons in China [9][10][11].…”

Section: Physicochemical Properties Of Chromium-containing Metallurgi...mentioning

confidence: 99%

“…Compared to fine dust, coarse dust has a particle size of approximately 80 µm, with a much The main elements contained in stainless steel dust are Mg, Si, Cr, Fe, Zn, and Ni. Table 1 lists the chemical composition and phases of typical stainless steel dust [7,18,[29][30][31][32][33][34][35][36][37][38][39][40][41][42]. As can be seen from Table 1, it is evident that Fe is the predominant element, with a content ranging from 14.77% to 53.50%.…”

Section: Stainless Steel Dustmentioning

confidence: 99%

“…Stainless steel slag is the by-product produced in the furnace during the smelting of stainless steel, such as in electric arc furnaces and argon oxygen decarburization furnaces [5,6]. Producing 1 ton of stainless steel is usually accompanied by approximately 40 kg of stainless steel dust and 300 kg of stainless steel slag [7,8]. In 2021, the yields of Metals 2023, 13, 1768 2 of 21 stainless steel slag in China and the world were about 10.21 million tons and 19.43 million tons, respectively, while the yield of stainless steel dust reached about one million tons in China [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

“…Chemical composition and phase of typical stainless steel dust[7,18,[29][30][31][32][33][34][35][36][37][38][39][40][41][42][43].…”

mentioning

confidence: 99%

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

Xu,

Liu,

et al. 2023

Metals

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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.

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Section: Physicochemical Properties Of Chromium-containing Metallurgi...mentioning

confidence: 99%

Section: Stainless Steel Dustmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Chemical composition and phase of typical stainless steel dust[7,18,[29][30][31][32][33][34][35][36][37][38][39][40][41][42][43].…”

mentioning

confidence: 99%

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

Xu,

Liu,

et al. 2023

Metals

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“…Zhang et al[38] Pickling sludge Reduction and magnetic separation Fe 70.1%, Ni 60.3%, Cr 53.7% Liu et al[39] Stainless steel dust Carbon-thermal reduction Fe 79.7%, Ni 83.6%, Cr 90.7% Wu et al[5] Picklingsludge Direct reduction and magnetic separation Fe 95.3%, Ni 97.5%, Cr 88.7% This study Stainless steel sludge Solvent extraction and chemical precipitation Fe 99.9%, Ni 99.5%, Cr 75.1%…”

mentioning

confidence: 99%

Hydrometallurgical Recovery of Iron, Nickel, and Chromium from Stainless Steel Sludge with Emphasis on Solvent Extraction and Chemical Precipitation

Chen

Lee

2022

Processes

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Stainless steel has a variety of applications nowadays because of its mechanical strength and corrosion resistance. The large-scale machinery made up of stainless steel has an outstanding performance and endurance for manufacturing industries. However, stainless steel scraps accumulate with a lubricant to form sludge during the operation. To reduce the environmental hazards caused by sludge, this research attempts to construct a hydrometallurgical process to recover iron, nickel, and chromium from the sludge. The experiments could be divided into four parts. First, calcination was adopted to remove the oil and water content. The factors that have impacts on the leaching efficiency, such as the type of acid and the calcination temperature, were investigated in the second part. It was optimal that the sludge was calcined at 300 ℃ for 8 h and leached by 4 mol/L HCl. The results revealed that the leaching percentages of iron, nickel, and chromium were 97.6%, 98.1%, and 95.7%, respectively. In the two-stage solvent extraction procedure, Fe(III) could be efficiently recovered by using 0.1 mol/L bis(2-ethlhexyl) phosphate (D2EHPA) at pH 1.5 with an Aqueous/Organic ratio of 1 over 10 min. The results indicated that the extraction percentage of Fe(III) was beyond 99%. Eventually, the recoveries of nickel and chromium were respectively 99.5% and 75% through chemical precipitation.

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Kinetics of Carbothermal Reduction of Electric Arc Furnace Dust from a Stainless Steel Plant

Muvunyi

Zheng²,

Li³

et al. 2023

JOM

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New understanding on metal recovery of Fe, Ni and Cr during carbon-thermal reduction of stainless steel dust

Cited by 5 publications

References 29 publications

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

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

Hydrometallurgical Recovery of Iron, Nickel, and Chromium from Stainless Steel Sludge with Emphasis on Solvent Extraction and Chemical Precipitation

Kinetics of Carbothermal Reduction of Electric Arc Furnace Dust from a Stainless Steel Plant

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