Removal of Low-Content Impurities from Al By Super-Gravity

Zhao, Lei; Guo, Zhancheng; Wang, Zhi; Wang, Mingyong

doi:10.1007/s11663-010-9376-2

Cited by 75 publications

(25 citation statements)

References 8 publications

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“…Considering the fact that phosphorus in steelmaking slag is mostly enriched in dicalcium silicate precipitating early during solidification and its density is smaller than the residual melt, the P-concentrating phase can be separated by super gravity. In addition, super gravity technology has been successfully applied in the separation and recovery of various valuable elements from different kinds of slags, [17][18][19][20] removing of impurities from alloy melt 21,22) and preparation of functionally gradient materials. [23][24][25][26][27] Based on the characteristics above, it would be possible to separate P-concentrating phase precipitating early from steelmaking slag by super gravity.…”

Section: )mentioning

confidence: 99%

Isothermal Enrichment of P-Concentrating Phase from CaO–SiO2–FeO–MgO–P2O5 Melt with Super Gravity

Gao

Guo

2016

ISIJ Int.

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In this study, the investigation on the isothermal enrichment of P-concentrating phase from CaO-SiO 2 -FeO-MgO-P 2 O 5 melt with super gravity was carried out. The results show that there was an obvious stratification appearing in the sample after centrifugal enrichment. The upper part of the sample is loose and porous, while the lower part is smooth and compact. With the help of metallographic microscopy and X-ray diffraction, it is found that the P-concentrating phase gathered in the upper part, while it is hard to find any P-concentrating phase in the lower part of the sample. In addition, the volume fraction and equivalent diameter of P-concentrating phase present gradient distribution along the direction of super gravity. After centrifugal enrichment, the mass fraction of P 2 O 5 in the concentrate is up to 4.92%, while that in the tailing is just 1.08%. The recovery ratio of P 2 O 5 in the concentrate is up to 72.62% with the gravity coefficient G = 600, time t = 20 minutes and temperature T = 1 623 K.

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Section: )mentioning

confidence: 99%

Isothermal Enrichment of P-Concentrating Phase from CaO–SiO2–FeO–MgO–P2O5 Melt with Super Gravity

Gao

Guo

2016

ISIJ Int.

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“…In general, the pyrometallurgical routes are high energyconsuming and require large capital investments; 4,5) while the hydrometallurgical processes are usually quite complex and consume a great deal of lixiviating reagent. 6) So far, super-gravity separation has been successfully applied in removing impurities from alloy melt 7,8) and recovering valuable elements from different kinds of slag. 9,10) Inspired by these applications, this study examined the application of the method in recovering zinc from galvanizing dross.…”

Section: Introductionmentioning

confidence: 99%

Recovery of Zinc from Zn–Al–Fe Melt by Super-gravity Separation

et al. 2018

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The removal of iron-containing dross particles and recovery of zinc from galvanizing dross by super-gravity separation was investigated using a model Zn-Fe-Al alloy. After super-gravity separation, the high purity molten zinc went through the filter, while the residue mainly consisting of dross particles was intercepted by the filter and separated from the molten zinc. The effects of gravity coefficient and separating temperature on zinc recovery and iron removal were investigated. The preliminary results show the supergravity separation is a promising method of recovering zinc from galvanizing dross.

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“…Inspired by the successful application of super gravity technology in preparation of functionally gradient materials, 18,19) removing inclusion from alloy melt, 20,21) and ironslag separation at low temperature, 22,23) it is possible to separate perovskite from the titanium bearing slag melt by super gravity. Hence, the precipitation behavior of the titanium bearing molten slag during cooling liquation was first investigated in this study, and the advantageous temperature range for precipitation of perovskite (CaTiO 3 ) was determined according to the variations of diffraction peak intensity and microstructure at different temperatures.…”

Section: Introductionmentioning

confidence: 99%