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在低温压力氧化过程中,石和石的溶解行为:石对石氧化的影响

Kirill Karimov¹, Maksim Tretiak¹, Denis Rogozhnikov¹

¹Laboratory of Advanced Technologies in Non-Ferrous and Ferrous Metals Raw Materials Processing, Institute of New Materials and Technologies, Ural Federal University, Yekaterinburg 620002, Russia.

Materials (Basel, Switzerland)

|October 26, 2024

概括

低温浸出金和石灰表明,添加石灰通过减少硫被动化来增强金氧化. 这种方法改善了从富含甲矿石的铜回收和从缩物中的金/银回收.

科学领域:

金与材料科学金与材料科学
水电金术是指用水电金术进行金术.
矿物加工矿物加工

背景情况:

铁矿和石矿是铜矿中的关键矿物质,通常含有有价值的相关金属.
了解它们的漏行为对于有效的金属回收至关重要.
硫被动化可以阻碍这些矿物质的有效溶解.

研究的目的:

单独和作为混合物,研究矿和矿的低温浸出动力学.
为了确定氧气压力,硫酸度和矿物相互作用对漏效率的影响.
探索这种漏方法对铜和贵金属回收的潜在应用.

主要方法:

在100°C和0.2-0.8MPa的温度下试验化,和它们的混合物.
使用扫描电子显微镜 (SEM) 和能量分散X射线 (EDX) 谱学的分析.
不同的氧气压力,硫酸度和反应时间.

主要成果:

甲酸溶解受到氧气压力 (0.2-0.8 MPa) 的最小影响.
氧化氧化被氧气压力和硫酸度 (10-50 g/L) 显著增强.
元素硫使这两种矿物表面被动化;加上石墨烯酸盐减少了这种对石墨烯酸盐的被动化,在240分钟内,石墨烯酸盐的氧化率从54.5%增加到80.3%.

结论:

甲酸盐的添加通过减轻元素硫的形成,可能是由于电化学合而导致的,从而对甲酸盐的出有积极的影响.
开发的低温浸方法适用于加工含有高酸盐的铜原料.
这种技术可以在铜加工中从矿缩物中提升黄金和白银的回收.

关键词:

石灰石是一种石灰石 (chalcopyrite).电化学对子电化学对子基本硫元素的硫.压力漂水压力漂水压力漂水压力氧化的压力氧化.皮里特酸盐是一种酸盐.硫化物硫化物是什么硫酸是一种硫酸.

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