Recycling of copper telluride from copper anode slime processing: Toward efficient recovery of tellurium and copper

Xu, Liang; Xiong, Yanhang; Song, Yutong; Zhang, Guangan; Zhang, Fuyuan; Yang, Yongxiang; Hua, Zhongsheng; Tian, Yongpan; You, Jinglin; Zhao, Zhuo

doi:10.1016/j.hydromet.2020.105436

Cited by 21 publications

(8 citation statements)

References 19 publications

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“…26 Moreover due to its excellent physicochemical properties, it is widely used in enhanced steel, rubber vulcanizing agents, thermoelectric devices, metallurgy, and photoreceptors. 27,28 Te has been treated as one of the significant essential metal resources, which are of growing economic importance. 29 Vanadium oxide has unique characteristics and it was labeled as a strategic metal because of its large host of diverse fields.…”

Section: Introductionmentioning

confidence: 99%

Controlled compositions of tellurium/vanadium co-doped into hydroxyapatite/ε-polycaprolactone for wound healing applications

2022

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Section: Introductionmentioning

confidence: 99%

Controlled compositions of tellurium/vanadium co-doped into hydroxyapatite/ε-polycaprolactone for wound healing applications

2022

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“…One of the valuable copper refining products is its telluride containing phases of both stoichiometric (Cu 2 Te) and nonstoichiometric compositions (Cu 2-х Te) [4][5][6][7]. Analysis of the developed industrial copper telluride processing schemes showed that most of them refer to hydrometallurgical methods characterized by imperfection and multiple stages.…”

Section: Introductionmentioning

confidence: 99%

Development of an Oxidizing-Distillation Technology for the Extraction of Tellurium from a Tellurium-Containing Middling

Nitsenko¹,

Linnik²,

Volodin³

et al. 2022

Proceedings of the 8th World Congress on Mechanical, Chemical, and Material Engineering

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In this paper, the results of studying aimed at tellurium extraction from its compound with copper in the form of oxides by the pyrometallurgical method are presented. Technical copper telluride of Kazakhmys Corporation LLP containing crystalline phases, %: Cu 7 Te 4 -36.5; Cu 5 Te 3 -28.5; Cu 2 Te -12.9; Cu 2.5 SO 4 (OH) 3 •2H 2 O -16.2 and Cu 3 (SO 4 )(OH) 4 -6.0 was used as an object of research. As a result of the physical and chemical research and technological experiments, the fundamental possibility of processing technical copper telluride by oxidative distillation roasting with the extraction of tellurium into a separate product has been shown. Air oxygen was used as an oxidant. It has been established that a pressure decrease at the same temperature entails an increase in the degree of tellurium extraction. However, from a technological point of view, the value of the degree of tellurium extraction (93.0-98.0 %) at all pressures (within 1 hour) is achieved at a temperature of 1100 °C. Increasing the exposure to 3 hours has a minor beneficial effect. The derived condensate is a free-flowing mixture of crystalline phases of tellurium dioxide and tellurium oxysulfate. This condensate is a middling product for further production of elemental tellurium.

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“…As a result, insoluble copper telluride containing phases of both stoichiometric (Cu 2 Te) and nonstoichiometric compositions (Cu 2−x Te) are formed. Copper telluride, in addition to tellurium with varying purity, is a valuable product of tellurium production [12][13][14][15]. Some plants prefer to accumulate or sell copper telluride at relatively low prices rather than to further separate tellurium and copper.…”

Section: Introductionmentioning

confidence: 99%

“…Information in the field on the developments of telluride recovery from copper telluride is practically absent in the literature. We found only two works by Chinese scientists [15,16] that proposed to improve the preparatory stage of metallic tellurium electrolysis.…”

Section: Introductionmentioning

confidence: 99%

Phase Transformations and Tellurium Recovery from Technical Copper Telluride by Oxidative-Distillate Roasting at 0.67 kPa

Nitsenko

Linnik

Володин

et al. 2022

Metals

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This paper presents the results of a study of phase transformations occurring in copper-telluride by-products during its processing of oxidation-distillate roasting at low pressure. The results show that copper telluride is oxidized through intermediate compounds to the most stable tellurate (Cu3TeO6) at low temperatures. The increase in the roasting temperature above 900 °C and the presence of an oxidizer favor the copper orthotellurate decomposition. Thus, the tellurium extraction rate is 90–93% at a temperature of 1000 °С, the oxidant flow rate is 2.2 × 10−2 m3/m2·s, and the roasting time is 60–90 min. One of the decomposition products is copper oxide alloy, which is the basis of the residue. The second product is tellurium in oxide form, which evaporates and then condenses in the cold zone of the condenser in crystalline form. The main constituent phase of the condensate is tellurium oxide (TeO2), which can be further processed during one operation to elemental chalcogen by thermal reduction or electrolytic method.

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Recycling of copper telluride from copper anode slime processing: Toward efficient recovery of tellurium and copper

Cited by 21 publications

References 19 publications

Controlled compositions of tellurium/vanadium co-doped into hydroxyapatite/ε-polycaprolactone for wound healing applications

Controlled compositions of tellurium/vanadium co-doped into hydroxyapatite/ε-polycaprolactone for wound healing applications

Development of an Oxidizing-Distillation Technology for the Extraction of Tellurium from a Tellurium-Containing Middling

Phase Transformations and Tellurium Recovery from Technical Copper Telluride by Oxidative-Distillate Roasting at 0.67 kPa

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