Industrial symbiosis: High purity recovery of metals from Waelz sintering waste by aqueous SO2 solution

Çopur, Mehmet; Pekdemir, Turgay; Çolak, Sabri; Künkül, Asım

doi:10.1016/j.jhazmat.2007.03.079

Cited by 18 publications

(2 citation statements)

References 7 publications

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“…Reported as one of the most common methods, Waelz process is actually recycling zinc in the form oxide that is convenient for leaching process [8,9]. Although most of zinc can be recovered after reduction roasting above 1000°C, a fatal drawback of these pyrometallurgical methods is high energy consumption and strict requirement on dust collection system.…”

Section: Introductionmentioning

confidence: 99%

Innovative methodology for comprehensive utilization of high iron bearing zinc calcine

Han

Liu

Qin

et al. 2015

Separation and Purification Technology

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Section: Introductionmentioning

confidence: 99%

Innovative methodology for comprehensive utilization of high iron bearing zinc calcine

Han

Liu

Qin

et al. 2015

Separation and Purification Technology

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“…7 Consequentially, numerous studies have been conducted for treating and reutilising this residue. Before the 1960s, pyrometallurgical methods including Waelz and Ausmelt methods were mainly employed, 8,9 suggesting that metals, such as Zn, Cd and Pb, could be recovered after the residue was reductively roasted above 1100uC. 10 However, these processes were insufficiently economical due to high energy cost, strict requirement on dust collection system and low recovery rate of metals.…”

Section: Introductionmentioning

confidence: 99%

Reduction roasting of high iron bearing zinc calcine for recovery of zinc and iron

Liu

Han

Qin

et al. 2013

Canadian Metallurgical Quarterly

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High iron bearing zinc sulphide ore is an important resource for zinc, and the reserve is very great in the world. It is very difficult to effectively obtain zinc and iron from the source by traditional technology. In this study, a novel method was proposed for recovery of zinc and iron from high iron bearing zinc calcine, and the key procedure, reduction roasting, was investigated. The effects of CO concentration, CO 2 concentration, temperature and time on reduction roasting were studied respectively. The experimental results show that the content of soluble zinc and magnetic susceptibility reached 91?15% and 4?1610 24 m 3 kg 21 under the optimum conditions respectively. About 90%Zn and 9?5%Fe were dissolved from the reduction roasted zinc calcine by low acid leaching, and simultaneously, 84?3%Fe was recycled to the iron concentrate containing iron of 53?2% from zinc leaching residue by low intensity magnetic separation.Le minerai de sulfure de zinc à haute teneur en fer est une ressource importante du zinc et il en existe une grande quantité dans le monde. Il est trè s difficile d'obtenir efficacement le zinc et le fer de cette source par la technologie traditionnelle. Dans cette é tude, on propose une nouvelle mé thode pour la ré cupé ration du zinc et du fer à partir de produit calciné de zinc à haute teneur en fer, et on examine la procé dure clef, le grillage ré ducteur. On a é tudié respectivement les effets de la concentration de CO, de la concentration de CO 2 , de la tempé rature et de la duré e sur le grillage ré ducteur. Les ré sultats expé rimentaux montrent que la teneur en zinc soluble et la susceptibilité magné tique atteignaient respectivement 91?15% et 4?1610 24 m 3 kg 21 en conditions optimales. Environ 90% du Zn et 9?5% du Fe é taient dissous à partir du produit calciné de zinc de grillage ré ducteur par lessivage à acide faible, et simultané ment, 84?3% du Fe é tait recyclé en concentré de fer contenant 53?2% de fer à partir du ré sidu de lessivage du zinc par sé paration magné tique à faible intensité .

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Removal of Iron Impurity from Zinc Calcine After Magnetization Roasting

Han¹,

Liu²,

Qin³

et al. 2016

7th International Symposium on High‐Temperature Metallurgical Processing

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Industrial symbiosis: High purity recovery of metals from Waelz sintering waste by aqueous SO2 solution

Cited by 18 publications

References 7 publications

Innovative methodology for comprehensive utilization of high iron bearing zinc calcine

Innovative methodology for comprehensive utilization of high iron bearing zinc calcine

Reduction roasting of high iron bearing zinc calcine for recovery of zinc and iron

Removal of Iron Impurity from Zinc Calcine After Magnetization Roasting

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