Reductive-sulfurizing smelting treatment of smelter slag for copper and cobalt recovery

Li, Y.; Yang, Shenghai; Tang, Chaobo; Chen, Y.M.; He, Jing; Tang, Minjun

doi:10.2298/jmmb160315049l

Cited by 12 publications

(4 citation statements)

References 14 publications

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“…The Saudi phosphate ores are always in grain size with 9-70 mm and can be upgraded by an electrostatic separator (COM Tertiary XRT B2400, GREANEX, Wilmington, DE, USA). In the laboratory experiment and industrial test, respectively, 60.2% and 44.65% of silica was demonstrated to be removed [15]. However, this method is usually restricted by the low capacity of the electrostatic separators and, thus, has not been applied for the large-scale production of phosphate concentrate.…”

Section: Electrostatic Separationmentioning

confidence: 99%

Review on Beneficiation Techniques and Reagents Used for Phosphate Ores

Ruan

Chi

2019

Minerals

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Phosphate ore is an important raw material for manufacturing fertilizers and phosphorous chemical products. While most of the phosphate resources cannot be directly treated as feed stock due to the low grade of P2O5 and high content of impurities. In order to obtain a qualified phosphate concentrate, the beneficiation of the low-grade phosphate ore is, hence, of great necessity. Many beneficiation techniques can be employed to upgrade the P2O5 grade of phosphate ores based on their characteristics in chemical composition and texture. The flotation process is most widely applied to balance the P2O5 recovery ratio and cost. In this review, the dominant techniques for the beneficiation of phosphate ores are introduced. Moreover, the factors that affect the flotation of phosphate ore, including the properties of mineralogy, flotation reagents (depressants and collectors) and flotation medium, were systematically analyzed.

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Section: Electrostatic Separationmentioning

confidence: 99%

Review on Beneficiation Techniques and Reagents Used for Phosphate Ores

Ruan

Chi

2019

Minerals

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“…In addition, it also weakened interfacial tension between the alloy and the slag, resulting in a decrease in the dissolution and mechanical inclusion of the alloy in the slag. However, further elevating temperature must be given to the increased energy consumption [27]. Hence, from a practical point of view, the smelting temperature was fixed at 1550 °C in the subsequent experiments.…”

Section: Smelting Processmentioning

confidence: 99%

Smelting process of direct reduction iron bearing Ni and Cu to prepare Fe-Ni-Cu ternary alloy

Zhu

Pan

Guo

et al. 2019

J min metall B Metall

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The smelting behavior of direct reduction iron powder containing Ni and Cu from co-reduction followed by a magnetic separation of copper slag and nickel laterite was investigated in this paper. The results show that the perfect ternary alloy with 90.66% Fe, 5.24% Ni, 1.20% Cu and minor impurities can be prepared by smelting under optimum conditions at 1550°C for 30 min with 1.1 slag basicity. The corresponding recoveries of Fe, Ni, and Cu were 92.77%, 96.27% and 96.24%, respectively. In addition, basicity has a significant effect on slag fluidity. The optimum basicity of slag is approximately 1.1, which is beneficial for both metal recovery and desulfuration. Compared with the direct reduction iron powder, the Fe-Ni-Cu ternary alloy contains a higher metal content and less sulfur from the smelting process and is a superior material for producing weathering steel. Hence, it is very feasible to use an electric arc furnace to smelt direct reduction iron powder to produce a high quality Fe-Ni-Cu ternary alloy.

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“…Therefore, recovery of metals from these secondary resources has gained considerable interest to compensate the mineral shortage as well as resolving the environmental problems [1]. Recovery of Copper [2][3][4][5][6][7] and zinc [8][9][10] from the secondary resources has been widely researched due to high application of these metals. Brass alloy production wastes such as slag, dusts, chips, and scraps are among the secondary resources containing both Zn and Cu.…”

Section: Introductionmentioning

confidence: 99%

A novel predictive model for estimation of cell voltage in electrochemical recovery of copper from brass: Application of gene expression programming

Ghasemi

Vaghar

Pourzafar

et al. 2020

J min metall B Metall

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Regarding the high corrosion resistance of brass in sulfuric acid, its leaching process is the most important step in hydrometallurgical recovery of brass scraps. In this study, the electrochemical dissolution of brass chips in sulfuric acid has been investigated. The electrochemical cell voltage depends on various parameters. Regarding the complexity of electrochemical dissolution, the system voltage could not be easily predicted based on the operational parameters of the cell. So, it is necessary to use modeling techniques to predict cell voltage. In this study, 139 leaching experiments were conducted under different conditions. Using the experimental results and gene expression programming (GEP), parameters such as acid concentration, current density, temperature and anode-cathode distance were entered as the inputs and the voltage of the electrochemical dissolution was predicted as the output. The results showed that GEP-based model was capable of predicting the voltage of electrochemical dissolution of brass alloy with correlation coefficient of 0.929 and root square mean error (RSME) of 0.052. Based on the sensitivity analysis on the input and output parameters, acid concentration and anode-cathode distance were the most and least effective parameters, respectively. The modeling results confirmed that the proposed model is a powerful tool in designing a mathematical equation between the parameters of electrochemical dissolution and the voltage induced by variation of these parameters.

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Reductive-sulfurizing smelting treatment of smelter slag for copper and cobalt recovery

Cited by 12 publications

References 14 publications

Review on Beneficiation Techniques and Reagents Used for Phosphate Ores

Review on Beneficiation Techniques and Reagents Used for Phosphate Ores

Smelting process of direct reduction iron bearing Ni and Cu to prepare Fe-Ni-Cu ternary alloy

A novel predictive model for estimation of cell voltage in electrochemical recovery of copper from brass: Application of gene expression programming

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