Article
Engineering, Chemical
Chao Ni, Qingshan Zhang, Mingguo Jin, Guangyuan Xie, Yaoli Peng, Hesheng Yu, Xiangning Bu
Summary: A novel process combining high-speed shear flocculation and flotation was proposed to beneficiate ultra fine microcrystalline graphite. The flotation rate of MG in the SFF process is about 3 times as fast as that in the conventional flotation process, due to the increase in aggregate size and improved hydrophobicity of graphite particles. The SFF process shows great potential in industrial applications for separating ultrafine MG.
Article
Energy & Fuels
Xuexia Wang, Xiangning Bu, Muidh Alheshibri, Muhammad Bilal, Shaoqi Zhou, Chao Ni, Yaoli Peng, Guangyuan Xie
Summary: This study investigated the impact of scrubbing medium's particle size distribution on microcrystalline graphite scrubbing flotation performance, with 3 mm particle size distribution being the most effective. Increasing scrubbing time improved graphite quality, with an optimal scrubbing time of 45 min. The composition of scrubbing medium's particle size significantly influenced gangue entrainment in the scrubbing flotation process.
INTERNATIONAL JOURNAL OF COAL PREPARATION AND UTILIZATION
(2022)
Article
Acoustics
Lizhang Jin, Weidong Wang, Yanan Tu, Kanghui Zhang, Ziqi Lv
Summary: Ultrasonic flotation is an effective method for floating fine coal by promoting the aggregation of bubbles and coal bubbles. The frequency of standing waves can affect the formation of aggregates and coal recovery rate.
ULTRASONICS SONOCHEMISTRY
(2021)
Article
Geochemistry & Geophysics
Yangshuai Qiu, Zhenfei Mao, Kangkang Sun, Lingyan Zhang, Yupeng Qian, Tao Lei, Wenbo Liang, Yaxin An
Summary: This study investigated the effects of particle size, pulp density, and flotation reagent on the entrainment of mica and quartz in natural graphite flotation, and found that kerosene is more effective in reducing gangue entrainment compared to diesel.
Article
Engineering, Chemical
Xuexia Wang, Xiangning Bu, Chao Ni, Shaoqi Zhou, Xiaolin Yang, Jing Zhang, Muidh Alheshibri, Yaoli Peng, Guangyuan Xie
Summary: Scrubbing is a suitable method for cleaning fine slime on microcrystalline graphite surface and improving its flotation performance. This study found that the particle size of the scrubbing medium is the most important factor influencing the enrichment efficiency of microcrystalline graphite. The optimal conditions for the scrubbing process were determined and confirmed through testing.
MINERALS ENGINEERING
(2021)
Article
Geochemistry & Geophysics
Xuexia Wang, Juan Zhang, Muhammad Bilal, Xiangning Bu, Yemin Wang
Summary: This study compared the effects of sec-octanol and terpineol on microcrystalline graphite flotation and found that sec-octanol produced smaller bubbles but slightly lower froth layer height. The water recovery was higher with sec-octanol. The flotation performance was similar for both frothers.
Article
Mechanics
Santosh Kumar Panda, Basanta Kumar Rana, Parmod Kumar
Summary: This article provides a detailed description of recent studies on entrainment dynamics caused by external rotational flux across interfaces. Despite significant progress in understanding rotation-induced entrainment, there are still several unanswered questions.
EUROPEAN JOURNAL OF MECHANICS B-FLUIDS
(2022)
Article
Chemistry, Physical
Wenlu Xu, Kangkang Sun, Yangshuai Qiu, Lingyan Zhang, Luo Yang, Shaowei Wei, Dafa Ding
Summary: This study investigates the collection mechanism of gangue minerals in fine flake graphite flotation. The presence of graphite particles enhances the collection of gangue minerals. Experimental results and theoretical calculations suggest that the gangue minerals are mainly collected through entrainment.
PHYSICOCHEMICAL PROBLEMS OF MINERAL PROCESSING
(2022)
Review
Chemistry, Multidisciplinary
Liang Zhao, Baichuan Ding, Xian-Ying Qin, Zhijie Wang, Wei Lv, Yan-Bing He, Quan-Hong Yang, Feiyu Kang
Summary: This article provides a comprehensive overview of the origin, roles, and research progress of NG-based materials in ongoing LIBs. It covers the structure, properties, electrochemical performance, modification methods, derivatives, composites, and applications of NG. The strategies to improve their high-rate and low-temperature charging performance are also discussed, along with prospects for the development and future applications of NG-based materials.
ADVANCED MATERIALS
(2022)
Article
Geochemistry & Geophysics
Dzmitry Pashkevich, Ronghao Li, Ozan Kokkilic, Kristian Edmund Waters
Summary: Temperature variations can have significant impacts on flotation performance, leading to operational and economic challenges. Improving flotation efficiency at cold temperatures is crucial for the sustainable development of the mining industry, especially as mining operations expand to northern regions and face the increasing influence of climate change-induced weather extremes. Through mono-mineral flotation tests, it was found that sulfide minerals exhibit similar patterns of recovery kinetics at different temperature conditions, with higher recovery and slower kinetics at lower temperatures and lower recoveries and faster kinetics at higher temperatures. The observed variations in foam height and stability at different temperatures also contribute to these findings.
Article
Mechanics
Muhammad Osama, Peng Deng, Marie-Jean Thoraval, G. Gilou Agbaglah
Summary: This study conducts a numerical investigation on the dynamics of a finite-size air filament surrounded by a denser fluid medium with varying viscosity. The study reveals different behaviors of air filaments with different aspect ratios during pinch-off, and demonstrates that viscous effects of external fluid play a role in controlling the shape of the filament before breakup.
Article
Engineering, Chemical
Tarun Bhambhani, Raymond S. Farinato, P. Somasundaran, D. R. Nagaraj
Summary: The presence of hydrophilic ore particles in a mineral flotation froth affects the grade of the concentrate and the transport of value particles. The shape and size of these gangue particles impact their transport through the froth zone.
MINERALS ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Panwu Li, Ming Zhang, Wei Yao, Zeping Xu, Rong Fan
Summary: An effective method using water containing positively charged nanobubbles and polyaluminum chloride was proposed to treat high-ash fine coal. The results showed that this method could enhance combustible recovery and reduce ash recovery compared to using normal nanobubble water. The presence of positively charged nanobubbles intensified the aggregation of fine coal particles, while polyaluminum chloride disrupted the coal flocs induced by nanobubbles, leading to the release of trapped kaolinite particles and alleviated clay recovery by entrapment.
Article
Engineering, Chemical
Yafeng Fu, Huan Wang, Liu Liu, Qiang Yao, Xiaofeng Yang, Zhentao Hu, Qingbo Yuan, Jin Yao, Jianjun Liu
Summary: In this study, the effect of calcium lignosulfonate (CLS) on the flotation separation of brucite and serpentine was investigated using a self-made Hallimond apparatus. The results showed that the entrainment rate of fine-grained serpentine decreased with increasing CLS dosage. The addition of CLS increased the foam generation time and decreased the average bubble diameter, resulting in a decrease in the fluid content of the foam layer and the serpentine entrainment rate.
Article
Chemistry, Physical
Ruolin Wang, Wenjuan Sun, Haisheng Han, Wei Sun, Ruohua Liu
Summary: This study finds that the entrainment of chlorite during flotation process can decrease the tungsten grade in the concentrate, but it can be improved by using metal ions-starch colloidal depressant. The selectivity of metal ions-starch is better than that of caustic starch. Additionally, metal ions-starch cannot adsorb on the surface of scheelite, while caustic starch can.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Chemistry, Physical
Cheng Liu, Yunfei Zheng, Siyuan Yang, Weng Fu, Xin Chen
Summary: In this study, a biodegradable polyepoxysuccinic acid (PESA) was introduced as a novel depressant to improve the separation efficiency of pentlandite from lizardite slimes in flotation. The addition of PESA altered the surface charge of lizardite from positive to negative, enabling better dispersion between pentlandite and lizardite particles and enhancing the adsorption of collector on pentlandite surface. XPS analysis demonstrated that PESA effectively interacted with Mg sites on lizardite surface, showing its potential as an effective depressant for removing lizardite slimes from pentlandite surface in flotation system.
APPLIED CLAY SCIENCE
(2021)
Article
Engineering, Environmental
Guozhao Ji, Weijian Wang, Huihuang Chen, Siyuan Yang, Jing Sun, Weng Fu, Zhiqiang Huang, Bo Yang
Summary: The study introduces a novel ceramic membrane-promoted crystallization (MPC) process for brine management, which achieves high water recovery and salt production while simplifying traditional energy-intensive steps and reducing the use of expensive equipment.
CHEMICAL ENGINEERING JOURNAL
(2022)
Review
Environmental Sciences
Siyuan Yang, Ming Zhou, Xin Chen, Liping Hu, Yifeng Xu, Weng Fu, Chao Li
Summary: Research findings indicate that the concentration and characteristics of microplastics vary significantly across different countries and regions, largely influenced by the local development level and economic structure. The migration paths of microplastics in inner and outer limnic ecosystems reveal the reasons for regional divergence in microplastics. Policy developments in various countries and regions emphasize the urgency of controlling microplastic pollution in lake systems.
Article
Chemistry, Physical
Siyuan Yang, Yanling Xu, Cheng Liu, Diallo A. D. Soraya, Chao Li, Hongqiang Li
Summary: The study found that the combined collector of NaOl and SPA in ilmenite flotation has a synergistic effect, leading to improved adsorption energy and collection performance.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Physical
Cheng Liu, Qianqian Wang, Siyuan Yang
Summary: The study revealed the impact of barite particle size on fluorite flotation and discussed the use of reagent schemes to achieve effective separation of fluorite from barite. Hetero-coagulation between fluorite and barite slimes was identified as a major issue, leading to the slime coating of barite onto the fluorite surface. Additional methods were tested and discussed to improve the flotation separation efficiency.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Physical
Cheng Liu, Xinyue Zhang, Yunfei Zheng, Zijie Ren, Weng Fu, Siyuan Yang
Summary: In this study, water glass was used as a dispersant, gelatinized starch as a depressant, and sodium oleate as a collector to improve the froth flotation separation performance between fluorite and barite slimes. The addition of water glass could eliminate the negative effect of barite slimes on the flotation of fluorite when barite existed as slimes, allowing for better separation efficiency between the two minerals. The zeta potential results indicated a change in surface charge on fluorite and the detachment of barite slimes coating due to the addition of water glass, facilitating the interaction between fluorite and sodium oleate.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Engineering, Chemical
Guozhao Ji, Weijian Wang, Huihuang Chen, Siyuan Yang, Jing Sun, Weng Fu, Bo Yang, Zhiqiang Huang
Summary: The membrane-promoted crystallization (MPC) process utilizes a novel membrane structure and temperature advantage, as well as the role of template molecules, to achieve efficient potassium chloride production and water recovery. Continuous supply of KCl brine and water evaporation result in heterogeneous nucleation and growth of KCl crystals, forming abundant needle-shaped KCl whiskers on the membrane surface.
Article
Mining & Mineral Processing
Cheng Liu, Yuhua Zhu, Kaihua Huang, Siyuan Yang, Zhian Liang
Summary: In this study, a reagent scheme of depressant calcium lignosulphonate (CLS) and collector benzyl hydroxamic acid (BHA) was introduced to facilitate the flotation separation of smithsonite from calcite. The addition order of BHA before CLS was found to be crucial for efficiently flotation of smithsonite from calcite, leading to optimal flotation separation performance.
INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Chemical
Cheng Liu, Lei Zhu, Weng Fu, Ruan Chi, Hongqiang Li, Siyuan Yang
Summary: This research introduces amino trimethylene phosphonic acid (ATMP) to separate apatite and calcite. Flotation results confirm that ATMP has a strong depression ability to calcite, while it hardly influences the apatite floatability.
MINERALS ENGINEERING
(2022)
Article
Chemistry, Physical
Keyao Li, Haofeng Zhang, Tao Peng, Cheng Liu, Siyuan Yang
Summary: This study investigates the effects of starches with different molecular structures on hematite flotation. The results show that starches with higher amylopectin content can increase the collision probability and hydrophilicity of hematite particles, thereby reducing the adhesion probability.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Environmental Sciences
Ji Fang, Yingyong Ge, Zhijie Chen, Baolin Xing, Shenxu Bao, Qing Yong, Ruan Chi, Siyuan Yang, Bing-Jie Ni
Summary: A new reverse-direct flotation method was developed to purify high-silica phosphogypsum, effectively removing organic matters, fine slimes, and silica impurities. Through the closed-circuit flotation process, the whiteness and purity of the phosphogypsum concentrate were significantly improved, meeting the requirements of related standards for gypsum building materials.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Engineering, Chemical
Qinzhi Yuan, Guangjun Mei, Cheng Liu, Qian Cheng, Siyuan Yang
Summary: This study used a mixture of benzohydroxamic acid (BHA) and sodium butyl xanthate (SBX) as a collector for the flotation of moderately oxidized pyrrhotite (MOP) and found that it significantly improved the flotation recovery. The measurement results showed that the mixed collector had a stronger interaction with the MOP surface, improving its floatability. Fourier transform infrared spectroscopy (FTIR) analysis revealed that the interaction between BHA and MOP reduced the hydrophilic substance on the mineral surface, allowing other collectors to adsorb more easily onto the fresh unoxidized surface.
MINERALS ENGINEERING
(2022)
Article
Engineering, Chemical
Sijia Zhao, Ajuan Song, Yijun Cao, Siyuan Yang, Chao Li
Summary: The study proposes a method to enhance static pressure and optimize bubble size by introducing a Y-junction shunting configuration under an oscillatory air supply. The findings show a positive correlation between the shunting ratio and static pressure, and the smallest bubbles are obtained at a shunting ratio of 1.5.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2022)
Article
Engineering, Chemical
Qinzhi Yuan, Guangjun Mei, Cheng Liu, Qian Cheng, Siyuan Yang
Summary: A novel sulfur-containing ionic liquid (SCIL) collector was synthesized and used for the selective separation of pyrrhotite from magnetite. The results showed that SCIL exhibited excellent collecting ability and selectivity, reducing the impurity content effectively. The adsorption mechanism analysis revealed that SCIL could chemisorb onto the pyrrhotite surface.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Metallurgy & Metallurgical Engineering
Hong-yang Wang, Xiao-xue Zhang, Si-yuan Yang, Cheng Liu, Li-qun Luo
Summary: This study investigated the effect of adding limestone to coal gangue during roasting in a circulating fluidized bed boiler. The results showed that the addition of CaSO4 and CaO significantly decreased the separation efficiency of alumina and silica from metakaolinite.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2022)
