Separation of Arsenic from the Antimony-Bearing Dust through Selective Oxidation Using CuO

Zhong, Dapeng; Li, Lei; Tan, Cheng

doi:10.1007/s11663-016-0896-2

Cited by 32 publications

(12 citation statements)

References 23 publications

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“…The impurity element As could be greatly eliminated from the matte to gas phase by adjusting the concentrate composition. In this work, the oxygen rate was 12,072 Nm 3 •h −1 , the oxygen concentration in oxygen-enriched air was 73%, the feed rate of dry concentrate was 66 t•h −1 , and the ratio of oxygen/ore was 183 Nm 3 •t −1 . The matte grade, smelting temperature, slag type Fe/SiO 2 were around 70%, 1200 • C and 1.7, respectively.…”

Section: Industrial Application and Verificationmentioning

confidence: 99%

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Simulation Study and Industrial Application of Enhanced Arsenic Removal by Regulating the Proportion of Concentrates in the SKS Copper Smelting Process

Wang

Tian

et al. 2020

Processes

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Arsenic removal is a crucial issue in all copper smelters. Based on the Fangyuan 1# smelter, the effects of major elements (Cu, Fe and S) in sulfide concentrates on arsenic removal in the SKS copper smelting process were studied in this paper. The results show that Cu, Fe and S in concentrates have a significant influence on the oxygen/sulfur potential of smelting systems, and also affect the efficiency of arsenic removal. By regulating the proportion of the major elements in sulfide concentrates, the concentrate composition was changed from its original proportions (Cu 24.4%, Fe 26.8%, S 28.7%, and other 20%) to optimized proportions (Cu 19%, Fe 32%, S 29%, and other 20%). The distribution of arsenic among three phases in the original production process (gas 82.01%, slag 12.08%, matte 5.91%) was improved to obtain an optimal result (gas 94.37%, slag 3.45%, matte 2.18%). More arsenic was removed into the gas phase, and the mass fraction of arsenic in matte was reduced from 0.07% to 0.02%. The findings were applied to actual production processes in several other copper smelters, such as the Hengbang copper smelter, Yuguang smelter and Fangyuan 2# smelter. Therefore, the optimized result obtained in this work could provide direct guidance for actual production.

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Section: Industrial Application and Verificationmentioning

confidence: 99%

“…Arsenic is an element that is toxic for the environment and people's health [1][2][3][4], especially As 2 O 3 . In the smelting process for copper sulfide ores, arsenic is dispersed into the fly ash, smelting slag and copper matte [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Simulation Study and Industrial Application of Enhanced Arsenic Removal by Regulating the Proportion of Concentrates in the SKS Copper Smelting Process

Wang

Tian

et al. 2020

Processes

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“…17) Based on the research of E. de WILDE et al, 18) FactPS and FToxid databases of the FactSage is suitable for calculating the phase transformation in reaction system containing spinel phases. Therefore, FactPS and FToxid databases of the FactSage were used to calculate the ternary diagram of SnO 2 -C-FeSO 4 system at 1 200°C and 1 atm pressure of shielding gas, 19) and the result is shown in Fig. 3.…”

Section: Theoretical Basismentioning

confidence: 99%

Reduction and Sulfurization Behavior of Tin Phases in Tin-bearing Iron Concentrates with Sulfates in Sulfur-bearing Stone Coal

Zhang

et al. 2018

ISIJ Int.

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The tin could be effectively removed from tin-bearing iron concentrates through roasted with sulfurbearing stone coal reported in previous researches, and the Sn volatilization ratio was obviously influenced by the amount of sulfur-bearing stone coal used. The reactivity of sulfate (FeSO 4) in sulfur-bearing stone coal on the reduction and sulfurization behavior of cassiterite (SnO 2) in tin-bearing iron concentrates was studied in this paper. The thermodynamic analysis and experimental results showed that Fe-Sn spinel was formed with the increase of FeSO 4 amount during the roasting process, and it resulted in the tin volatilization ratio being relatively low (a maximum of 61.87%). Furthmore, the EPMA analysis indicated that the Fe-Sn spinel was mostly concentrated in the upper layer of the roasted residues, and these tin could be further removed and recovered by a physical separation process.

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“…10) Meanwhile, the Sb was transformed into insoluble matter and separated by filtration. The arsenic removal rate also reached above 90 mass% through a selective oxidation roasting process with CuO, 11) MnO 2 6) and Fe 2 O 3 , 5) and the Sb was oxidized to Sb 2 O 4 and remained in the roasted residue. The traditional treatment of Pb-Sb alloy for separating Sb is blowing smelting in reverberatory furnace, in which the Sb volatilizes in the form of Sb 2 O 3 .…”

Section: Introductionmentioning

confidence: 97%

Recovery of Sb and Fe from Sb-bearing Slags through a Reduction Roasting Process with Low Density Polyethylene

Tan

et al. 2019

ISIJ Int.

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A novel method for treating the Sb-bearing slag using LDPE as a reductant under N 2 atmosphere is proposed. The H 2 , CH 4 and C 2 (C 2 H 6 , C 2 H 4 , C 2 H 2) are released quickly during the LDPE pyrolysis process, and some of them have escaped off the roasting system before the reaction with the Sb-bearing slag. The Sb, Pb and Fe phases in the original Sb-bearing slag could be selectively reduced to Sb 4 O 6 , Pb and Fe 3 O 4 respectively by the pyrolysis gas at roasting temperature of 1 000°C and LDPE amount of 25 wt%. The Sb 4 O 6 could be separated and recovered effectively with the volatilization rate of 93.51% accompanying the Pb volatilization rate was only around 0.68% and the Fe phase was almost transformed into Fe 3 O 4 retaining in the residue. Then the Fe 3 O 4 can be separated and collected from the roasted residues using magnetic separation process.

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Separation of Arsenic from the Antimony-Bearing Dust through Selective Oxidation Using CuO

Cited by 32 publications

References 23 publications

Simulation Study and Industrial Application of Enhanced Arsenic Removal by Regulating the Proportion of Concentrates in the SKS Copper Smelting Process

Simulation Study and Industrial Application of Enhanced Arsenic Removal by Regulating the Proportion of Concentrates in the SKS Copper Smelting Process

Reduction and Sulfurization Behavior of Tin Phases in Tin-bearing Iron Concentrates with Sulfates in Sulfur-bearing Stone Coal

Recovery of Sb and Fe from Sb-bearing Slags through a Reduction Roasting Process with Low Density Polyethylene

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