Chemical and mineralogical characterizations of LD converter steel slags: A multi-analytical techniques approach

Waligora, Julien; Bulteel, D.; Dégrugilliers, P.; Damidot, D.; Potdevin, Jean-Luc; Measson, M.

doi:10.1016/j.matchar.2009.10.004

Cited by 152 publications

(85 citation statements)

References 20 publications

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“…The fractions named aged were stored outdoors for approximately 16 months to study the effect of chemical changes caused by, for example, leaching with rainwater as described in Refs. [25,26].…”

Section: Effects Of Differences In Slag Propertiesmentioning

confidence: 99%

“…The slag fractions with a high amount of free lime or calcium hydroxide were able to release Particle size Reaction time more Ca than those that contained Ca in a more bound form, as expected. [10,25] Also, the smaller the slag particles used in the experiments, the better the extraction. However, the original particle size before milling did not have a significant effect.…”

Section: Effects Of Differences In Slag Propertiesmentioning

confidence: 99%

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Design of a Continuous Process Setup for Precipitated Calcium Carbonate Production from Steel Converter Slag

Mattila

Zevenhoven

2014

ChemSusChem

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A mineral carbonation process "slag2PCC" for carbon capture, utilization, and storage is discussed. Ca is extracted from steel slag by an ammonium salt solvent and carbonated with gaseous CO2 after the separation of the residual slag. The solvent is reused after regeneration. The effects of slag properties such as the content of free lime, fractions of Ca, Si, Fe, and V, particle size, and slag storage on the Ca extraction efficiency are studied. Small particles with a high free-lime content and minor fractions of Si and V are the most suitable. To limit the amount of impurities in the process, the slag-to-liquid ratio should remain below a certain value, which depends on the slag composition. Also, the design of a continuous test setup (total volume ∼75 L) is described, which enables quick process variations needed to adapt the system to the varying slag quality. Different precipitated calcium carbonate crystals (calcite and vaterite) are generated in different parts of the setup.

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Section: Effects Of Differences In Slag Propertiesmentioning

confidence: 99%

Section: Effects Of Differences In Slag Propertiesmentioning

confidence: 99%

Design of a Continuous Process Setup for Precipitated Calcium Carbonate Production from Steel Converter Slag

Mattila

Zevenhoven

2014

ChemSusChem

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“…The converter steel slag can be used in several areas, such as fertilizer [5], as aggregates in road construction [6], in cement [7] and as raw material for ceramics [8].…”

Section: Introductionmentioning

confidence: 99%

Ceramic Tiles Obtained from Clay Mixtures with the Addition of Diverse Metallurgical Wastes

Quaranta¹,

Caligaris²,

Unsen³

et al. 2014

MSCE

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The generation of industrial residues is unavoidable, but these materials may be recovered, redirecting them toward new production processes, rather than allocating them to the stream of discards. The aim of this paper is to study the feasibility of utilization of metallurgical wastes as raw material for tiles in the ceramic industry, using the residual materials as aggregates in clay based ceramics. The residues used are: sludge and slag from several metallurgical processes, Ruthner dust and foundry sand. Samples were obtained from mixtures of clay and each waste in various percentages, which were then heat treated. The pieces obtained were characterized using several techniques, with the aim of determining the properties of these materials in relation to the commercial requirements. A high feasibility of reuse of most of these wastes as raw material in the production of ceramic bodies has been established.

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“…Slag contains a high content of free lime and iron oxide [10], which is beneficial when recycled in the iron making process, instead of being dumped abundantly at the sites, as in current practice.…”

Section: Introductionmentioning

confidence: 99%

Development process for tar filtering from biomass pyrolysis

Rozhan

Purwanto

2015

WIT Transactions on Ecology and the Environment

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This paper presents a new approach for recovering tar produced from the biomass pyrolysis process. Pyrolysis is a promising thermochemical process to utilize biomass to produce gas, char and tar. Tar is a vapour/liquid product containing carbon, and it is often found in producer gas. It needs to be recovered from gas mixture to upgrade its value for the tar to be utilized on its own as a fuel source. In this developed process, steelmaking slag and low-grade iron ore were made porous by the dehydration process, and were then introduced as a tar filter to trap tar produced during biomass pyrolysis. The purpose of this work is to investigate the possibility of using porous materials for tar filtering during the pyrolysis process. Tar vapour infiltrates the porous materials and then decomposes into carbon and gases, where carbon is deposited on the pore surface. Clean gas can be collected and tar can be recovered before being utilized as a renewable energy source by itself. After the trapping process, carbon was found to be deposited within the porous material. The product of the tar filtering will be carbon-deposited material -a potential candidate to be used as a renewable fuel source.

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Chemical and mineralogical characterizations of LD converter steel slags: A multi-analytical techniques approach

Cited by 152 publications

References 20 publications

Design of a Continuous Process Setup for Precipitated Calcium Carbonate Production from Steel Converter Slag

Design of a Continuous Process Setup for Precipitated Calcium Carbonate Production from Steel Converter Slag

Ceramic Tiles Obtained from Clay Mixtures with the Addition of Diverse Metallurgical Wastes

Development process for tar filtering from biomass pyrolysis

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