Cradle-to-gate life cycle assessment of precipitated calcium carbonate production from steel converter slag

Mattila, Hannu-Petteri; Hudd, Hannes; Zevenhoven, Ron

doi:10.1016/j.jclepro.2014.05.064

Cited by 53 publications

(33 citation statements)

References 7 publications

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“…It was observed that the NH 4 Cl concentration higher than 1 M led to dissolving the other species in the slag, such as iron and manganese [19,27]. On the other hand, Mattila et al have proposed using very low concentrations of NH4Cl (0.01 M) to reduce the need for washing [28]. However, this would have an adverse effect on the Ca extraction efficiency and necessitate a multi-stage extraction process.…”

Section: Extraction With Low Solvent Concentrationmentioning

confidence: 99%

Pilot-scale experimental work on carbon dioxide sequestration using steelmaking slag

2016

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Section: Extraction With Low Solvent Concentrationmentioning

confidence: 99%

Pilot-scale experimental work on carbon dioxide sequestration using steelmaking slag

2016

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“…At the same time, Aalto University in Espoo Finland put up a demonstration plant with 200 L reactor vessels [7,8]. Later, the work involved life circle assessment (LCA) simulations using SimaPro with Ecoinvent and other databases [9] and process scale-up and integration with a focus on separation methods for PCC product solids and spent slags from aqueous dispersions [1,6]. These three concepts will be evaluated for their potential when aiming at reduced CO 2 emissions, less production of wastes or an overall smaller environmental footprint when compared to "business as usual" or other profitable production.…”

Section: Methodsmentioning

confidence: 99%

“…Steelmaking slags, more specific steel converter (basic oxygen furnace, BOF) slags can be converted with CO 2 into precipitated calcium carbonate (PCC) with market value. This route also known as the slag2PCC concept [1][2][3][4][5][6][7][8][9]. Figure 1 gives an overview of how the sectors of iron-and steelmaking, paper/plastics and the mining of limestone are interconnected with typical global annual mass flows indicated [6].…”

Section: Steelmaking Slags Valorizationmentioning

confidence: 99%

“…A comparison of the slag2PCC process route with conventional PCC production was made, as illustrated by Figure 11. SimaPro software (v. 7.3.2) with several life cycle inventory (LCI) datasets (Ecoinvent v3, European Life Cycle Data (ELCD), EU and Danish Input Output Library, and Swiss Input Output) were used for the calculations (see [6,9] for more details). Four impact categories being climate change, human health, ecosystem quality, and resources were considered.…”

Section: Lca Of Pcc Productionmentioning

confidence: 99%

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Metals Production, CO2 Mineralization and LCA

Zevenhoven

2020

Metals

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Modern methods of metal and metal-containing materials production involve a serious consideration of the impact on the environment. Emissions of greenhouse gases and the efficiency of energy use have been used as starting points for more sustainable production for several decades, but a more complete analysis can be made using life cycle assessment (LCA). In this paper, three examples are described: the production of precipitated calcium carbonate (PCC) from steelmaking slags, the fixation of carbon dioxide (CO 2 ) from blast furnace top gas into magnesium carbonate, and the production of metallic nanoparticles using a dry, high-voltage arc discharge process. A combination of experimental work, process simulation, and LCA gives quantitative results and guidelines for how these processes can give benefits from an environmental footprint, considering emissions and use and reuse of material resources. CO 2 mineralization offers great potential for lowering emissions of this greenhouse gas. At the same time, valuable solid materials are produced from by-products and waste streams from mining and other industrial activities.

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“…The conventional scope of application of waste steelmaking and blast-furnace slags is to manufacture building materials and articles made therefrom (Lun et al, 2008;Li et al, 2009;Nadeem and Pofale, 2012;Arribas et al, 2015). Along with the conventional approaches the new areas of slag disposal are growing rapidly (Gahan et al, 2011;Mattila et al, 2014). However, the currently used plans, as a rule, provide only for a partial solution to a problem of slag heap disposal.…”

Section: Introductionmentioning

confidence: 99%

On Expediency of the Preliminary Heat Treatment for Liquid-Phase Reduction of Waste Steelmaking Slag

Trofimov¹,

Chumanov²,

Dildin³

et al. 2015

American Journal of Applied Sciences

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The problem of using waste steelmaking slags as a technogenic source of metallurgical raw materials still has no sustainable solution and requires innovative ideas and approaches. The purpose of this paper is a theoretical and experimental study of the possibility and expediency of the preliminary heat treatment of steelmaking slags in a reducing medium for greater metal recovery. The subject of research is a slag sample taken from the slag heaps at Zlatoust Metallurgic Plant (the Russian Federation). To perform thermodynamic simulation of the processes running during heat treatment of a slag substance, the FactSage software package (version 6.4) was applied. For the ease of analysis the key calculation results are presented as a logarithmic dependence of component weights and composition of the considered phases on temperature. The experimental studies include heat treatment tests on slag samples at temperatures of 1100 and 1200°C in air and in the carbon monoxide medium with further separation of the derived product. The composition of test samples is determined by electron microprobe analysis and X-ray diffraction analysis. It has been reported that heat treatment in carbon monoxide medium makes possible to significantly increase the iron content in the derived magnetic fraction. The results of thermodynamic simulation, composition analysis of samples and weight data for the obtained magnetic fractions (resistant or non-resistant to the magnetic field) suggest that the preliminary heat treatment of slag in carbon monoxide medium is expedient.

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Cradle-to-gate life cycle assessment of precipitated calcium carbonate production from steel converter slag

Cited by 53 publications

References 7 publications

Pilot-scale experimental work on carbon dioxide sequestration using steelmaking slag

Pilot-scale experimental work on carbon dioxide sequestration using steelmaking slag

Metals Production, CO2 Mineralization and LCA

On Expediency of the Preliminary Heat Treatment for Liquid-Phase Reduction of Waste Steelmaking Slag

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