Production of Aluminum Sulfide through Carbosulfidation Utilising H2S

Huda, Nazmul; Rhamdhani, M. Akbar; Brooks, Geoffrey; Monaghan, Brian J; Prentice, Leon H.

doi:10.1007/978-3-319-65136-1_219

Cited by 3 publications

(5 citation statements)

References 6 publications

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“…In the Al-O-S system, the condensed phases are Al 2 O 3 , AlS, and Al 2 S 3 . Al 2 S 3 is the most stable sulphide at room temperature, (Huda et al, 2016). Although the graphite crucible was used to house the specimen, an alumina plate was used to separate the specimen from the graphite.…”

Section: Discussionmentioning

confidence: 99%

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On the interactions of iron sulphide with alumina and silica

Hlongwa¹,

Thethwayo²,

Mulaba‐Bafubiandi³

2020

. S. Afr. Inst. Min. Metall.

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Paper written on project work carried out in partial fulfilment of BTech (Metallurgical Engineering) degree SynopsisThe hypothesis that matte will only react with certain constituents of a refractory brick, as opposed to the entire brick, was tested by observing the extent of possible reactions between iron sulphide (FeS) and the refractory oxides silica and alumina. The main aim was to identify the components of the alumina-chrome refractory brick which are most reactive with the matte. Pellets comprised of FeS and either SiO 2 or Al 2 O 3 were enclosed in a graphite crucible and reacted in a horizontal tube furnace for one hour at 1200°C, 1350°C, or 1500°C in an argon atmosphere. The specimens were analysed with SEM and XRD to determine the extent of any reactions. Results showed that FeS penetration into the silica grain was more prominent with increasing temperature, while alumina was not penetrated by FeS at all temperatures. At 1200°C, no significant reactions were observed for both reaction couples; however, at 1350°C and 1500°C intermediate products were observed. For example, an FeS FeO mixture, SiS-O, and nonstoichiometric oxides with excess oxygen were detected in the products. SiO 2 was also more reactive towards FeS. Thus, the postulation that brick components may individually be reactive towards matte was proved to be true.

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Section: Discussionmentioning

confidence: 99%

“…The volatile species include Al, AlS, Al 2 S, and Al 2 S 2 (Haiste 1978). According toHuda et al (2013), Al 2 S 3 can form by the reaction of Al 2 O 3 with any sulphur source in the presence of a reductant. Upon heating, Al 2 S 3 can be converted to AlS and sulphur…”

mentioning

confidence: 99%

On the interactions of iron sulphide with alumina and silica

Hlongwa¹,

Thethwayo²,

Mulaba‐Bafubiandi³

2020

. S. Afr. Inst. Min. Metall.

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“…Further studies on the CAPP was continued by Xiao et al (2004Xiao et al ( , 2007 2012) carried out a preliminary thermodynamic assessment of the sulphide route, including the effect of temperature, pressure and chemistry for the Al 2 O 3 -C-S system. Further preliminary investigation on the carbosulphidation route by utilising H 2 S (g) was carried out by Huda et al (2013).…”

Section: Review Of Previous Studies On Multi-stage Al Production Thro...mentioning

confidence: 99%

“…The authors previously carried out a preliminary experimental study on the carbosulphidation of Al 2 O 3 using H 2 S (Huda et al 2013). The aim of this (Beck 2008) and data after year 2000 are collected from several references (Tian et al 2013;Li et al 2013;Thibeault et al 2013;Feiya et al 2013;Naixiang et al 2013;Akhmetov et al 2013).…”

Section: Introductionmentioning

confidence: 99%

“…The authors previously carried out a preliminary experimental study on the carbosulphidation of Al 2 O 3 using H 2 S (Huda et al 2013). The aim of this present investigation is to further evaluate and develop a complete multi-stage process to produce Al through a carbosulphidation reaction of Al 2 O 3 followed by sodiothermic reduction of Al 2 S 3 .…”

Section: Introductionmentioning

confidence: 99%

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Novel multi-stage aluminium production: part 1 – thermodynamic assessment of carbosulphidation of Al₂O₃/bauxite using H₂S and sodiothermic reduction of Al₂S₃

Rhamdhani

Huda

Khaliq

et al. 2017

Mineral Processing and Extractive Metallurgy

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A novel multi-stage Al production through a carbosulphidation of Al 2 O 3 , followed by a sodiothermic reduction of Al 2 S 3 , was proposed. In Stage-1, alumina (or bauxite) is reduced to Al 2 S 3 in the presence of carbon and H 2 S. In Stage-2, Al 2 S 3 is reduced to Al through reactions with Na or NaH. The thermodynamic analysis predicted Al 2 S 3 to be the main intermediate Alcompound when H 2 S is reacted with Al 2 S 3 and C at 1000-2000°C at 1 atm. Al 2 S 3 formation was predicted to be low at 1100-1300°C at 1 atm (0.1 moles/mole Al 2 O 3 ) but increased with increasing temperature (0.96 moles/mole Al 2 O 3 at 1800°C). The thermodynamic analysis of sodiothermic reduction predicted that Al metal can be extracted from Al 2 S 3 below 800°C at 1 atm. The Na 2 S produced can be hydrolysed to form H 2 S and NaOH. H 2 S can be re-used and the Na can be reproduced from NaOH and put back into the process.

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Bauxite Processing Via Sulfide Chemistry

Stinn,

Marden,

Benderly-Kremen

et al. 2024

The Minerals, Metals &Amp; Materials Series

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Production of Aluminum Sulfide through Carbosulfidation Utilising H2S

Cited by 3 publications

References 6 publications

On the interactions of iron sulphide with alumina and silica

On the interactions of iron sulphide with alumina and silica

Novel multi-stage aluminium production: part 1 – thermodynamic assessment of carbosulphidation of Al₂O₃/bauxite using H₂S and sodiothermic reduction of Al₂S₃

Bauxite Processing Via Sulfide Chemistry

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Production of Aluminum Sulfide through Carbosulfidation Utilising H2S

Cited by 3 publications

References 6 publications

On the interactions of iron sulphide with alumina and silica

On the interactions of iron sulphide with alumina and silica

Novel multi-stage aluminium production: part 1 – thermodynamic assessment of carbosulphidation of Al2O3/bauxite using H2S and sodiothermic reduction of Al2S3

Bauxite Processing Via Sulfide Chemistry

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Product

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About

Novel multi-stage aluminium production: part 1 – thermodynamic assessment of carbosulphidation of Al₂O₃/bauxite using H₂S and sodiothermic reduction of Al₂S₃