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超声预处理用于增强精细和超精细碎片石墨浮动效益

Zheng Tong¹, Jing Lu², Xinnan Hu¹

¹Key Laboratory of Coal Processing and Efficient Utilization (Ministry of Education, School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, China.

|March 11, 2024

概括

超声预处理通过提高产量和减少灰来增强细片石墨浮动. 然而,由于空洞化效应有限,超细石墨浮动仍然具有挑战性.

科学领域:

矿物加工矿物加工
材料科学材料科学材料科学
应用地质化学应用地质化学

背景情况:

粗片石墨资源正在耗尽,需要使用精细和超精细石墨.
泡漂浮是一种关键的石墨丰富技术,在较小颗粒大小的情况下,选择性降低.
超声预处理为改善微粒浮动提供了一个潜在的解决方案.

研究的目的:

在超声波预处理后,对不同尺寸的薄片石墨的浮动性能进行比较分析.
为了研究超声波处理对薄片石墨矿物质特性的影响.
为了确定超声波辅助石墨浮动的最佳条件.

主要方法:

对各种颗粒大小的薄片石墨进行比较漂浮试验,并未经过超声波预处理.
分析漂浮缩剂的产量,灰含量和灰去除率.
使用粒子大小分析,X射线粉末衍射和扫描电子显微镜与能量分散式X射线光谱学进行矿物质学性质的表征.

主要成果:

超声波预处理显著提高了细片石墨 (62.63微米) 的浮动性能.
超细片状石墨 (24.97μm) 的浮动是有限的,碎片和解离不足.
缩剂的产量从88.95%增加到94.98%,灰含量从5.72%降至4.87%,除灰率从36.94%提高到42.61%的微型石墨.

结论:

超声波预处理通过促进解离和空气流形成,有效地增强了细片石墨浮动.
超声波预处理的有效性取决于颗粒大小,超细石墨的局限性.
需要进一步的研究来优化超声波参数用于超细石墨加工.

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