Kinetic Study of the Acidic Leaching of a Domestic Copper Oxide Ore and Optimization of the Process Using Statistical Design of Experiments
SSRN, ISSN: 1556-5068
2022
- 273Usage
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Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
Citation Benchmarking is provided by Scopus and SciVal and is different from the metrics context provided by PlumX Metrics.
Article Description
Sulfuric acid leaching behavior of a complex oxide copper ore from Sungun copper mine with azurite and malachite as the main copper-containing phases and average copper content of 1.28wt.% was investigated using bottle roll leaching. The kinetic model governing the leaching process was determined. Measurement of copper recovery over time in different conditions showed that the leaching process was diffusion-controlled, and best fitted with an R value of 0.977 in the well-known D equation [Formula prestented], which suggests that the activities of the reactants control the diffusion process. Design of experiments (DOE) methods was used to characterize the leaching behavior and optimize the copper recovery using two software packages, namely, Minitab and Design Expert. Taking particle size, rolling speed, sulfuric acid concentration, and pulp density as the process variables, the obtained model included all linear, interaction, and quadratic terms with R, adjusted R, and predicted R values of 0.95, 0.91, and 0.84, respectively. The predicted optimized conditions targeting maximized recovery were concluded to be ore particle size of 3.95 mm, rolling speed of 120 rpm, the acid concentration of 12gl, and pulp density of 120gl. The application of the predicted optimum conditions to practical experiments resulted in an average copper extraction percentage of ~93%.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85178536600&origin=inward; http://dx.doi.org/10.2139/ssrn.4049422; https://www.ssrn.com/abstract=4049422; https://dx.doi.org/10.2139/ssrn.4049422; https://papers.ssrn.com/sol3/papers.cfm?abstract_id=4049422; https://ssrn.com/abstract=4049422
Elsevier BV
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