纳米气泡强化微细粒浮选动力学试验研究

姜涵悦; 杨海昌; 邢耀文; 曹亦俊; 桂夏辉

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DOI:10. 20239/j. issn. 1671-9492. 2025. 09. 008

有色金属（选矿部分）:2025,(9):93-100

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纳米气泡强化微细粒浮选动力学试验研究

姜涵悦^1,2,3，杨海昌^1,2,4，邢耀文^1,2,4，曹亦俊⁵，桂夏辉^1,2,4

(1. 中国矿业大学炼焦煤资源绿色开发全国重点实验室，江苏徐州 221116；2. 中国矿业大学国家煤加工与洁净化工程技术研究中心，江苏徐州 221116；3. 中国矿业大学化工学院，江苏徐州 221116；4. 深地科学与工程云龙湖实验室，江苏徐州 221116；5. 郑州大学中原关键金属实验室，郑州 450001)

Experimental Study on Nanobubble-Enhanced Flotation Kinetics of Fine Particles

JIANG Hanyue^1,2,3，YANG Haichang^1,2,4，XING Yaowen^1,2,4，CAO Yijun⁵，GUI Xiahui^1,2,4

(1.State Key Laboratory of Coking Coal Resources Green Exploitation，China University of Mining and Technology，Xuzhou 221116，Jiangsu，China；2. National Engineering Research Center of Coal Preparation and Purification，China University of Mining and Technology，Xuzhou 221116，Jiangsu，China；3. School of Chemical Engineering and Technology，China University of Mining and Technology，Xuzhou 221116，Jiangsu，China；4. Yunlong Lake Laboratory of Deep Underground Science and Engineering，Xuzhou 221116，Jiangsu，China；5. Zhongyuan Critical Metals Laboratory，Zhengzhou University，Zhengzhou 450001，China)

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中文摘要: 随着战略性矿产资源日趋呈现“贫、细、杂”特征，微细粒浮选已成为资源高效回收的关键难题。纳米气泡凭借其独特性质，在强化微细粒浮选方面展现显著潜力，但其与浮选颗粒的适配机制尚不明确。结合微纳气泡发生系统、纳米粒子追踪分析及浮选动力学试验，系统探究了操作参数对纳米气泡特性的调控规律，以及纳米气泡对微细粒煤浮选效果的强化作用。研究结果表明，增大系统压力和进气量可显著提高纳米气泡浓度和粒径，从而提升浮选回收率和速率常数。对于 D₅₀ 介于 10. 11~32. 06 μm 的微细煤粒，回收率提升幅度超过 20%，浮选速率常数提高 4 倍以上。其强化机制可能是源于纳米气泡诱导微细粒形成絮团，有效增大表观粒径，从而显著提升颗粒-气泡碰撞概率。对于 D₅₀为 100. 8 μm 的较粗颗粒，浮选强化效果相对有限。研究结果为微细粒纳米气泡技术开发提供了重要的理论支撑和工艺优化方向。

中文关键词: 浮选微细粒纳米气泡浮选动力学

Abstract:As strategic mineral resources increasingly exhibit the characteristics of being low-grade， fine-grained，and complex in composition，the flotation of fine particles has become a key challenge for efficient resource recovery. Owing to their unique properties，nanobubbles have demonstrated significant potential in enhancing fine particle flotation. However，the compatibility mechanism between nanobubbles and flotation particles remains unclear. In this study，a systematic investigation was conducted using a micro-nanobubble generation system，nanoparticle tracking analysis，and flotation kinetics experiments to explore the regulation of nanobubble characteristics by operational parameters and the enhancement effects on fine coal flotation. The results show that increasing system pressure and gas flow rate significantly improves nanobubble concentration and size，thereby enhancing flotation recovery and rate constants. For fine coal particles with D₅₀ values ranging from 10. 11 μm to 32. 06 μm，the recovery was improved by over 20%，and the flotation rate constant increased by more than fourfold. This enhancement may be attributed to the nanobubbles inducing the formation of flocs among fine particles， effectively increasing their apparent size and significantly raising the probability of particle-bubble collisions. In contrast，for coarser particles with a D₅₀ of 100. 8 μm，the flotation enhancement effect was relatively limited. This study provides important theoretical support and process optimization directions for the development of nanobubble technology in fine particle flotation.

keywords: flotation fine particles nanobubbles flotation kinetics

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作者	单位
姜涵悦	中国矿业大学炼焦煤资源绿色开发全国重点实验室，江苏徐州 221116；中国矿业大学国家煤加工与洁净化工程技术研究中心，江苏徐州 221116；中国矿业大学化工学院，江苏徐州 221116
杨海昌	中国矿业大学炼焦煤资源绿色开发全国重点实验室，江苏徐州 221116；中国矿业大学国家煤加工与洁净化工程技术研究中心，江苏徐州 221116；深地科学与工程云龙湖实验室，江苏徐州 221116
邢耀文	中国矿业大学炼焦煤资源绿色开发全国重点实验室，江苏徐州 221116；中国矿业大学国家煤加工与洁净化工程技术研究中心，江苏徐州 221116；深地科学与工程云龙湖实验室，江苏徐州 221116
曹亦俊	郑州大学中原关键金属实验室，郑州 450001
桂夏辉	中国矿业大学炼焦煤资源绿色开发全国重点实验室，江苏徐州 221116；中国矿业大学国家煤加工与洁净化工程技术研究中心，江苏徐州 221116；深地科学与工程云龙湖实验室，江苏徐州 221116

Author Name	Affiliation
JIANG Hanyue	State Key Laboratory of Coking Coal Resources Green Exploitation，China University of Mining and Technology，Xuzhou 221116，Jiangsu，China；2. National Engineering Research Center of Coal Preparation and Purification，China University of Mining and Technology，Xuzhou 221116，Jiangsu，China；School of Chemical Engineering and Technology，China University of Mining and Technology，Xuzhou 221116，Jiangsu，China
YANG Haichang	State Key Laboratory of Coking Coal Resources Green Exploitation，China University of Mining and Technology，Xuzhou 221116，Jiangsu，China；National Engineering Research Center of Coal Preparation and Purification，China University of Mining and Technology，Xuzhou 221116，Jiangsu，China；Yunlong Lake Laboratory of Deep Underground Science and Engineering，Xuzhou 221116，Jiangsu，China
XING Yaowen	State Key Laboratory of Coking Coal Resources Green Exploitation，China University of Mining and Technology，Xuzhou 221116，Jiangsu，China；National Engineering Research Center of Coal Preparation and Purification，China University of Mining and Technology，Xuzhou 221116，Jiangsu，China；Yunlong Lake Laboratory of Deep Underground Science and Engineering，Xuzhou 221116，Jiangsu，China
CAO Yijun	Zhongyuan Critical Metals Laboratory，Zhengzhou University，Zhengzhou 450001，China
GUI Xiahui	State Key Laboratory of Coking Coal Resources Green Exploitation，China University of Mining and Technology，Xuzhou 221116，Jiangsu，China；National Engineering Research Center of Coal Preparation and Purification，China University of Mining and Technology，Xuzhou 221116，Jiangsu，China；Yunlong Lake Laboratory of Deep Underground Science and Engineering，Xuzhou 221116，Jiangsu，China

引用文本：
姜涵悦,杨海昌,邢耀文,曹亦俊,桂夏辉.纳米气泡强化微细粒浮选动力学试验研究[J].有色金属（选矿部分）,2025(9):93-100.
JIANG Hanyue,YANG Haichang,XING Yaowen,CAO Yijun,GUI Xiahui.Experimental Study on Nanobubble-Enhanced Flotation Kinetics of Fine Particles[J].Nonferrous Metals(Mineral Processing Section),2025(9):93-100.

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