通过优化纳尔逊选矿机对块状金矿进行富集

IF 2.1 4区 工程技术 Q3 CHEMISTRY, INORGANIC & NUCLEAR Gold Bulletin Pub Date : 2024-09-20 DOI:10.1007/s13404-024-00352-8
Çağri Çerik, Gül Akar Şen, Sezai Şen
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引用次数: 0

摘要

本研究通过响应面方法(RSM)和箱型贝肯实验设计,对使用实验室规模的纳尔逊选矿机进行的块金矿石加工进行了优化。共进行了 15 次实验,以评估固体浓度 (重量百分比)、G 力 (G) 和流化水流速 (l/min) 这三个参数对金品位和回收率的影响。使用 Design Expert 13 进行的统计分析显示,金品位和回收率均存在显著的二次回归方程,且决定系数较高。经验模型显示了选矿参数与工艺反应之间错综复杂的关系。对方程的解释表明,提高固体浓度对金品位和回收率有积极影响,而较高的 G 力和流化水流速对这些参数有消极影响。此外,还观察到某些参数对之间存在协同效应,这表明影响金浓度和提取效率的因素之间存在复杂的相互作用。这项研究强调了了解纳尔逊选矿机分离机制的重要性,尤其是在存在片状金颗粒和球形颗粒的情况下。这项研究获得的见解为优化块状金矿石加工操作提供了宝贵的指导,最终提高了矿物加工实践的效率和可持续性。
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Enrichment of placer gold ore through Knelson concentrator optimization

This study investigates the optimization of placer gold ore processing using a laboratory-scale Knelson concentrator through response surface methodology (RSM) and Box-Behnken experimental design. Fifteen experiments were conducted to assess the effects of three parameters: solid concentration (wt.%), G force (G), and fluidization water flow rate (l/min), on gold grade and recovery. Statistical analyses using Design Expert 13 revealed significant quadratic regression equations for both gold grade and recovery, with high coefficients of determination. The empirical models demonstrated the intricate relationships between the concentrator parameters and process responses. Interpretation of the equations revealed that increasing the solid concentration positively influenced gold grade and recovery, while higher G force and fluidization water flow rate negatively impacted these parameters. Moreover, synergistic effects were observed between certain parameter pairs, indicating the complex interplay of factors influencing gold concentration and extraction efficiency. The study highlights the importance of understanding the separation mechanisms within the Knelson concentrator, especially in the presence of flaky gold particles alongside spherical particles. Insights gained from this research provide valuable guidance for optimizing placer gold ore processing operations, ultimately enhancing efficiency and sustainability in mineral processing practices.

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来源期刊
Gold Bulletin
Gold Bulletin Chemistry-Inorganic Chemistry
CiteScore
3.70
自引率
4.50%
发文量
21
期刊介绍: Gold Bulletin is the premier international peer reviewed journal on the latest science, technology and applications of gold. It includes papers on the latest research advances, state-of-the-art reviews, conference reports, book reviews and highlights of patents and scientific literature. Gold Bulletin does not publish manuscripts covering the snthesis of Gold nanoparticles in the presence of plant extracts or other nature-derived extracts. Gold Bulletin has been published over 40 years as a multidisciplinary journal read by chemists, physicists, engineers, metallurgists, materials scientists, biotechnologists, surface scientists, and nanotechnologists amongst others, both within industry and academia. Gold Bulletin is published in Association with the World Gold Council.
期刊最新文献
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