Evaluation of Oxidation Reaction of Copper Concentrate Mixed with Silica Sand by Hot-Thermocouple Method

Takebe, Hiromichi; Takahashi, Yusuke; Okura, Takahiko

doi:10.1007/s40831-019-00211-3

Cited by 9 publications

(3 citation statements)

References 12 publications

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“…It is necessary to comprehend the distribution and coordination of the production business relationship network in the agglomeration area [40,41], the distribution and operation status of each logical production unit, warehouse, instrument [42][43][44], and the business of resource recycling [45][46][47]. Te key problems include (1) realising an interactive coordination of materials and energy and (2) rationalizing the analysis of interactive information.…”

Section: Introductionmentioning

confidence: 99%

Research on Nickel-Cobalt-Copper Productive Collaboration and Intelligent Decision-Making Technology in Symbiotic Coupling Enterprises

Chen

Jiang

et al. 2022

Mobile Information Systems

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This study investigates the research on nickel-cobalt-copper productive collaboration and intelligent decision-making technology for symbiotic coupling enterprises in the Gansu Province of China. The aim is to address the problems of low resource utilization efficiency, weak production collaboration, and an insufficient intelligent decision-making level in the nonferrous metallurgy industry. First, the present situation of nickel-cobalt-copper industry chain-level collaboration in the agglomeration area is analyzed extensively, and the corresponding problems are proposed. Second, the functional framework of productive collaboration and intelligent decision-making is presented from the industrial chain and industrial agent levels. In addition, the design methods of various balance strategies in the production collaboration within the industrial agent are provided. These can realise the daily balance of material, metal, and energy data in an individual industrial agent. Finally, with regard to intelligent decision-making at the industrial chain level, six key measures surrounding different themes are provided to support the implementation of productive collaboration and intelligent decision-making in the nonferrous metallurgy agglomeration area.

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Section: Introductionmentioning

confidence: 99%

Research on Nickel-Cobalt-Copper Productive Collaboration and Intelligent Decision-Making Technology in Symbiotic Coupling Enterprises

Chen

Jiang

et al. 2022

Mobile Information Systems

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“…Thus, thermal measurement of the thermoelectromotive analog signal was carried out simultaneously with electrochemical measurement. This procedure obtains similar information as the "hot-thermocouple method," which is widely used as a thermoanalytical scheme that includes visualization of the high-temperature melt reaction field [32][33][34]. In summary, this study determined the characteristics of the cathodic reaction in molten LiCl-KCl-CaCl2 by examining images of the electrode surface obtained by high-speed digital microscopy, which was synchronized with the thermoanalytical and electrochemical measurements.…”

Section: Introductionmentioning

confidence: 99%

Characterization of the Cathodic Thermal Behavior of Molten CaCl₂ and Its Hygroscopic Chloride Mixture During Electrolysis

Shibuya

Natsui

Nogami

et al. 2020

J. Electrochem. Soc.

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A liquid metal electrochemically deposited in CaCl2 or its chloride melts serves as an effective reductant for active metal oxides. Although a very low oxygen concentration can be achieved at a considerably high electrolysis efficiency, the existence of small amount of water impurity in molten chlorides, which is very difficult to detect, causes low electrolysis efficiency. In this study, to clarify the morphological and thermal characteristics of a cathodic electrode in a slightly hygroscopic LiCl-KCl-CaCl2 melt, we simultaneously performed electrochemical measurements and thermal measurements using an ultrafine thermocouple inserted inside a Mo electrode (i.d. 1.57 mm). 2 Concomitantly, changes in the electrode interface were recorded at 500-μs intervals using a synchronized high-speed digital camera. Despite the small amount of water included in the system, the measured heat absorption was much smaller than thermodynamically predicted, which suggested that the generated hydrogen decreased the purity of the liquid alloy electrodeposited on the cathode surface possibly through hydride formation. By using the synchronized thermal measurement, it was possible to trace the change in the electrodeposition pattern of impurity water quickly and sensitively, which was difficult to determine in only the electrochemical potential-current response.

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“…や我々の HTC 法の結果8) によれば，推定される Variations of (a) copper concentration in matte phase and (b) relative area of magnetite precipitate in slag phase with FeS2 concentration for the Cu concentrate/silica sand mixtures reacted at 470℃ in O2 atmosphere.…”

mentioning

confidence: 99%

Evaluation of Heterogenous Oxidation Reaction of Copper Concentrate/ Silica Sand Mixture by Dropping Method

Fujii

Takebe

2021

Journal of the Mining and Materials Processing Institute of Jap

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Mixtures of copper concentrate and silica sand with various CuFeS 2 /FeS 2 ratios and with 5 mg in weight were dropped from the top side of the silica tube filled with O 2 gas and were reacted at 470℃. The Fe/SiO 2 mass ratio of the mixtures was fixed at 1.1 as a typical composition of flash smelting. The samples exhibited the white light emission expecting the arrival temperature of > 1500℃ due to the ignition reaction of sulfide minerals. Reaction products were evaluated by using scanning electron micrograph-energy dispersive X-ray spectrometry (SEM-EDS) analysis. In addition to un-reacted oxide and sulfide particles, matte-slag-mineral-magnetite coexisted particles were recognized in microstructure observation. The products supported heterogeneous reactions occurring in the copper concentrate burner. The effect of FeS 2 concentration on copper concentration in matte phase and magnetite phase fraction in slag phase was discussed.

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Evaluation of Oxidation Reaction of Copper Concentrate Mixed with Silica Sand by Hot-Thermocouple Method

Cited by 9 publications

References 12 publications

Research on Nickel-Cobalt-Copper Productive Collaboration and Intelligent Decision-Making Technology in Symbiotic Coupling Enterprises

Research on Nickel-Cobalt-Copper Productive Collaboration and Intelligent Decision-Making Technology in Symbiotic Coupling Enterprises

Characterization of the Cathodic Thermal Behavior of Molten CaCl₂ and Its Hygroscopic Chloride Mixture During Electrolysis

Evaluation of Heterogenous Oxidation Reaction of Copper Concentrate/ Silica Sand Mixture by Dropping Method

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Evaluation of Oxidation Reaction of Copper Concentrate Mixed with Silica Sand by Hot-Thermocouple Method

Cited by 9 publications

References 12 publications

Research on Nickel-Cobalt-Copper Productive Collaboration and Intelligent Decision-Making Technology in Symbiotic Coupling Enterprises

Research on Nickel-Cobalt-Copper Productive Collaboration and Intelligent Decision-Making Technology in Symbiotic Coupling Enterprises

Characterization of the Cathodic Thermal Behavior of Molten CaCl2 and Its Hygroscopic Chloride Mixture During Electrolysis

Evaluation of Heterogenous Oxidation Reaction of Copper Concentrate/ Silica Sand Mixture by Dropping Method

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Characterization of the Cathodic Thermal Behavior of Molten CaCl₂ and Its Hygroscopic Chloride Mixture During Electrolysis