Separation and conversion of fluoride salts in aluminum electrolysis flue gas by one-step ammonia purification

Li, Xueke; Liu, Yan; Li, Xiaolong; Zhang, Ting‐an

doi:10.1007/s11771-022-5220-5

Cited by 5 publications

(2 citation statements)

References 25 publications

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“…From the perspective of industrialization, the purified flue gas of the aluminum electrolysis process, which contains 60%~70% CO 2 and 30%~40% CO (volume fraction), could be chosen as the carbon source [26]. In this paper, pure CO 2 gas (volume fraction > 99.99% supplied by the Lambogais Industrial Products trading Co., Ltd., Shengyang, China) is used as the carbon source, with a volume fraction of 50%.…”

Section: Methodsmentioning

confidence: 99%

Conversion of Activated Calcium in Industrial Water to Micron CaCO3 Powder Based on CO2 Absorption and Mineralization

Liu

Zhang

2023

Minerals

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Carbon dioxide capture, utilization, and storage (CCUS) is one of the essential approaches to achieving permanent CO2 emission reduction. A new idea of absorbing and mineralizing CO2 with industrial wastewater and converting activated calcium into micron CaCO3 powder is proposed in this paper, which synchronizes water softening and CO2 fixation. Therefore, this paper investigated the characteristics of circulating water quality in the iron and steel industry and the transformation behaviors of CO2 capture by activated calcium to CaCO3 powder in the mild aqueous environment under different process parameters. The phase composition, morphology, and particle size distribution (PSD) of CaCO3 powder were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), and (laser particle size analyzer) LPSA, respectively. In addition, a green integrated cycle system for industrial water capture of mineralized CO2 was preliminarily constructed, which provides a reference method for carbon reduction and economic utilization of carbon sources in an industrial system.

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Section: Methodsmentioning

confidence: 99%

Conversion of Activated Calcium in Industrial Water to Micron CaCO3 Powder Based on CO2 Absorption and Mineralization

Liu

Zhang

2023

Minerals

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“…The production process of aluminum electrolysis, including raw material transfer, crushing, alumina transfer, and fume emissions from the electrolysis tank, generates substantial air pollution, including toxic gases such as hydrogen fluoride [2,3]. These emissions not only contaminate the working environment but also contribute to atmospheric pollution, posing significant risks to human health and the living environment [4]. Therefore, it is crucial to enhance prevention and control measures for electrolytic aluminum fumes, reduce emissions through clean production practices, and establish a safe and comfortable air quality.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Cleaning Effect of Filter Bags in Pulse-Blown Electrolytic Aluminum Flue Gas Purification

Hu,

Zhao,

Tan

et al. 2024

Advances in Transdisciplinary Engineering

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The flue gas purification technology in aluminum electrolysis employs baghouse dust collectors as the main equipment. The efficiency of ash removal significantly affects the dust removal performance. The pulse blowing ash cleaning technology imposes more demanding requirements. This paper experimentally validates the impact of pulse ash cleaning on performance by varying the spray blowing distance and filter bag length. Additionally, it provides insights from the perspective of engineering design and application in aluminum electrolysis.

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Chemical leaching − Flexible precipitation for sustainable recovery of fluoride from aluminum electrolysis multisource hazardous waste

Ma,

Qiu,

Tang

et al. 2024

Chemical Engineering Journal

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Separation and conversion of fluoride salts in aluminum electrolysis flue gas by one-step ammonia purification

Cited by 5 publications

References 25 publications

Conversion of Activated Calcium in Industrial Water to Micron CaCO3 Powder Based on CO2 Absorption and Mineralization

Conversion of Activated Calcium in Industrial Water to Micron CaCO3 Powder Based on CO2 Absorption and Mineralization

Analysis of the Cleaning Effect of Filter Bags in Pulse-Blown Electrolytic Aluminum Flue Gas Purification

Chemical leaching − Flexible precipitation for sustainable recovery of fluoride from aluminum electrolysis multisource hazardous waste

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