Characterization and recycling of nickel- and chromium-contained pickling sludge generated in production of stainless steel

Hojamberdiev, Mirabbos; Yaru, Cui; Zhao, Junxue

doi:10.1007/s11771-014-2296-6

Cited by 27 publications

(4 citation statements)

References 5 publications

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“…Under this condition, the recoveries of Ni and Fe reached up to 97.86% and 96.07%, respectively. Li Xiao-ming et al [5,6] used pickling sludge as a raw material for steel-making or as an auxiliary material for stainless steel production after its desulphurization.…”

Section: Introductionmentioning

confidence: 99%

Recovery of Iron, Chromium, and Nickel from Pickling Sludge Using Smelting Reduction

Tang

Ding

Yan

et al. 2018

Metals

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This paper reports the recoveries of iron, chromium, and nickel from pickling sludge using coal-based smelting reduction. The influences of slag basicity (CaO/SiO 2 , which is controlled by high phosphorus oolitic hematite iron ores), reduction temperature, reduction time, and the C/O mole ratio on the recoveries of Fe, Cr, and Ni are investigated systematically. The experimental results show that high recoveries of Fe (98.91%), Cr (98.46%), and Ni (99.44%) are produced from pickling sludge with optimized parameters for the smelting reduction process. The optimized parameters are a slag basicity of 1.5; a reduction temperature of 1550 • C, a reduction time of 90 min, and a C/O mole ratio of 2.0. These parameters can be used as technical support for the recycling of pickling sludge with pyrometallurgy.

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Section: Introductionmentioning

confidence: 99%

Recovery of Iron, Chromium, and Nickel from Pickling Sludge Using Smelting Reduction

Tang

Ding

Yan

et al. 2018

Metals

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“…The weight loss at 50−150 °C was mainly caused by the desorption of physically adsorbed water and adsorbed gas, and the weight loss at 200−400°C was mainly caused by the dehydroxylation of a small amount of aqueous minerals, such as goethite (formula 6), in SHPS. 19,20 The weight loss at 260−950 °C was mainly caused by the thermal decomposition of a small amount of organic matter and calcium carbonate in SHPS. 21…”

Section: Resultsmentioning

confidence: 99%

“…A mass loss of approximately 15.09% was observed for SHPS in the temperature range of 100–900°C. The weight loss at 50–150 °C was mainly caused by the desorption of physically adsorbed water and adsorbed gas, and the weight loss at 200–400°C was mainly caused by the dehydroxylation of a small amount of aqueous minerals, such as goethite (formula ), in SHPS. , The weight loss at 260–950 °C was mainly caused by the thermal decomposition of a small amount of organic matter and calcium carbonate in SHPS When the temperature was 100–260 °C, the mass reduction rate of corncob remained basically unchanged; there was basically no thermal decomposition reaction at this stage, and the composition of the corncob remained basically unchanged.…”

Section: Resultsmentioning

confidence: 99%

Reduction–Magnetic Separation of Pickling Sludge by Biomass Pyrolysis Reducing Gas

Shu

Wang

et al. 2022

ACS Omega

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The neutralization process of carbon steel pickling wastewater produces a large amount of steel hydrochloric acid pickling sludge (SHPS), and improper treatment of this sludge poses a serious threat to the environment. Considering that SHPS contains a large amount of iron oxide and given the huge demand for iron concentrate in China’s ironmaking industry, refining iron oxide in SHPS into iron concentrate will have great environmental and economic benefits. This paper proposes a new method that uses biomass (corncob) to replace conventional coal-based reductants for the recovery of iron components in SHPS to simultaneously utilize two kinds of solid waste resources. Factors that affect the iron recovery rate and iron grade of SHPS, such as the reaction temperature, corncob dosage, residence time, and magnetic field strength, were studied using a fixed bed and a magnetic separator. These studies were combined with thermodynamic analysis, thermogravimetric analysis, X-ray diffraction, inductively coupled plasma–mass spectrometry, gas chromatography, etc. The results showed that when the reaction temperature was 680 °C, the corncob dosage was 5%, the residence time was 20 min, and the magnetic field strength was 200 mT, the recovery rate of iron reached 91.83%, and the iron grade of the recovered products was 67.72%, meeting the level I requirements in GB/T 32545-2016. Based on this result, a process involving SHPS reduction roasting with corncob pyrolysis reducing gas–magnetic separation was established to recover iron from SHPS. This process not only effectively utilizes the iron oxide in SHPS by converting it into iron concentrate powder for the ironmaking industry but also proves that the pyrolysis gas of corncob has good reduction ability.

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“…SSPS is a kind of solid waste produced in the pickling process of stainless steel. The oxide layer formed during manufacture and processing reduces the corrosion resistance of stainless steel and adversely affects product performance [20]. In stainless steel production, a pickling passivation process is required to improve its surface quality [21].…”

Section: Formation Of Ssd and Sspsmentioning

confidence: 99%

Transformation and Detoxification of Typical Metallurgical Hazardous Waste into a Resource: A Review of the Development of Harmless Treatment and Utilization in China

Wang,

Zhao,

Wang

et al. 2024

Materials

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The production process of the metallurgical industry generates a significant quantity of hazardous waste. At present, the common disposal method for metallurgical hazardous waste is landfilling, which synchronously leads to the leaching of toxic elements and the loss of valuable metals. This paper presents a comprehensive review of the research progress in the harmless treatment and resource utilization of stainless steel dust/sludge (including stainless steel dust and stainless steel pickling sludge) and aluminum ash (including primary aluminum ash and secondary aluminum dross), which serve as representative hazardous wastes in ferrous metallurgy and nonferrous metallurgy, respectively. Additionally, the general steps involved in the comprehensive utilization of metallurgical hazardous waste are summarized. Finally, this paper provides a prospective analysis on the future development and research trends of comprehensive utilization for metallurgical hazardous waste, aiming to offer a basis for the future harmless, high-value, resource-based treatment of metallurgical hazardous waste and the realization of industrial applications in China.

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Characterization and recycling of nickel- and chromium-contained pickling sludge generated in production of stainless steel

Cited by 27 publications

References 5 publications

Recovery of Iron, Chromium, and Nickel from Pickling Sludge Using Smelting Reduction

Recovery of Iron, Chromium, and Nickel from Pickling Sludge Using Smelting Reduction

Reduction–Magnetic Separation of Pickling Sludge by Biomass Pyrolysis Reducing Gas

Transformation and Detoxification of Typical Metallurgical Hazardous Waste into a Resource: A Review of the Development of Harmless Treatment and Utilization in China

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