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Artículos de revistas sobre el tema "Froth flotation"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 25 de julio de 2025

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1

Aldrich, Chris, and Xiu Liu. "Monitoring of Flotation Systems by Use of Multivariate Froth Image Analysis." Minerals 11, no. 7 (2021): 683. http://dx.doi.org/10.3390/min11070683.

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Froth image analysis has been considered widely in the identification of operational regimes in flotation circuits, the characterisation of froths in terms of bubble size distributions, froth stability and local froth velocity patterns, or as a basis for the development of inferential online sensors for chemical species in the froth. Relatively few studies have considered flotation froth image analysis in unsupervised process monitoring applications. In this study, it is shown that froth image analysis can be combined with traditional multivariate statistical process monitoring methods for rel

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2

Yianatos, Juan, Paulina Vallejos, Luis Vinnett, and Sebastián Arriagada. "Semi-Continuous Froth Discharge to Reduce Entrainment of Fine Particles in Flotation Cells Subject to Low-Mineralized Froths." Minerals 10, no. 8 (2020): 695. http://dx.doi.org/10.3390/min10080695.

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An operational strategy is proposed to improve the metallurgical performance of flotation cells subject to low-mineralized froths. This strategy consists of using a semi-continuous discharge into the concentrate, in which the froth is operated under loading and unloading periods. A transient model is developed to evaluate the proposed approach. The model is calibrated using experimental data from two industrial flotation banks. The metallurgical performances of the last cells of these banks are then simulated, considering the semi-continuous froth discharge. The results show that the semi-cont

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3

Farai, Katsande, Phiri, and S. Nyambara Mufaro. "Optimizing froth flotation techniques for sustainable beneficiation of spodumene and lepidolite in Zimbabwe: Enhancing lithium recovery for battery-grade material production." i-manager's Journal on Material Science 12, no. 3 (2024): 31. https://doi.org/10.26634/jms.12.3.21739.

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Zimbabwe hosts Africa's largest hard-rock lithium reserves, presenting a significant opportunity for local battery-grade lithium production. This study focuses on optimizing froth flotation for sustainable beneficiation of spodumene and lepidolite, primarily from the Bikita lithium deposit. Experimental results confirmed froth flotation as a highly effective method, achieving Li₂O concentrate grades up to 5.8% from ores initially averaging 1–3.2% Li₂O. Anionic collectors such as oleic acid and sodium oleate were evaluated, with oleic acid proving more effective for spodumene and sodium oleate

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4

Wang, Lei, and Chao Li. "A Brief Review of Pulp and Froth Rheology in Mineral Flotation." Journal of Chemistry 2020 (February 8, 2020): 1–16. http://dx.doi.org/10.1155/2020/3894542.

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In mineral flotation, rheological problems have limited the efficient upgrading of low-grade and complex ores. Since pulp and froth rheology are deemed to play different roles in influencing the separation performance, in this paper, a brief review on pulp and froth rheology in flotation is provided, with an objective of developing a basic understanding of rheology in flotation. The essential variables that affect the rheology of a flotation pulp and froth are discussed. The methods for measuring pulp and froth rheology are presented. The correlations of pulp and froth rheological properties t

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5

WAKAMATSU, Takahide. "Froth flotation." Hyomen Kagaku 12, no. 1 (1991): 28–33. http://dx.doi.org/10.1380/jsssj.12.28.

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6

Han, K. N. "Froth flotation." International Journal of Mineral Processing 28, no. 1-2 (1990): 152–54. http://dx.doi.org/10.1016/0301-7516(90)90034-v.

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7

Ralston, J. A. "Froth flotation." Minerals Engineering 2, no. 2 (1989): 272. http://dx.doi.org/10.1016/0892-6875(89)90049-6.

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8

Li, Chao, Zhongren Wu, Zhihang Wu, Xianggen Chen, and Yijun Cao. "Effect of the Interaction between Clays and Cations on Froth Rheology in Flotation." Minerals 14, no. 7 (2024): 706. http://dx.doi.org/10.3390/min14070706.

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The significance of froth rheology in affecting flotation performance is widely acknowledged. Clays could deteriorate flotation performance by altering froth rheology. The presence of cations further complicates the flotation system. Thus far, the interaction between clay minerals and cations and their impact on froth rheology remains unclear. The present work selected three typical clays and cations with two valences (Na+ and Ca2+) to investigate their interacting influences on froth rheology. The results indicate that clays exhibit diverse froth rheological behaviors, with increasing cation

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9

Jera, Tawona M., and Clayton Bhondayi. "A Review of Flotation Physical Froth Flow Modifiers." Minerals 11, no. 8 (2021): 864. http://dx.doi.org/10.3390/min11080864.

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Over the past few decades, the need to process more minerals while lowering capital costs has led to an increase in the size of flotation cells, e.g., 0.03 m3 to 1000 m3. However, this increase has created new challenges in the operation and design of industrial flotation cells, particularly in terms of froth removal, because the distance the froth must travel increases with an increase in the flotation cell diameter. This has a negative impact on recovery. Physical froth flow modifiers can be used to improve froth removal. Their major functions are to modify and optimise the flow of the froth

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10

Zhou, Xiaojun, and Yiping He. "Deep Ensemble Learning-Based Sensor for Flotation Froth Image Recognition." Sensors 24, no. 15 (2024): 5048. http://dx.doi.org/10.3390/s24155048.

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Froth flotation is a widespread and important method for mineral separation, significantly influencing the purity and quality of extracted minerals. Traditionally, workers need to control chemical dosages by observing the visual characteristics of flotation froth, but this requires considerable experience and operational skills. This paper designs a deep ensemble learning-based sensor for flotation froth image recognition to monitor actual flotation froth working conditions, so as to assist operators in facilitating chemical dosage adjustments and achieve the industrial goals of promoting conc

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11

Yantén, Carlos, Willy Kracht, Gonzalo Díaz, Pía Lois-Morales, and Alvaro Egaña. "Froth Images from Flotation Laboratory Test in Magotteaux Cell." Data 8, no. 4 (2023): 69. http://dx.doi.org/10.3390/data8040069.

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Froth flotation is a widely used method for the concentration of sulfide minerals. The structure of the superficial froth is an indicator of the performance of froth flotation alongside with the operational conditions in which this process is carried out. The aim of this study is to explore how the different operational conditions that can be managed in a flotation plant could directly influence the observable characteristics of the superficial froth. For this purpose, a froth image database was created using a special laboratory cell, designed to emulate the conditions seen in an industrial f

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12

Ostadrahimi, Mahdi, and Saeed Farrokhpay. "Effect of detergents on froth stability and flotation separation." Tenside Surfactants Detergents 59, no. 2 (2022): 176–81. http://dx.doi.org/10.1515/tsd-2021-2392.

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Abstract Froth stability is an important factor in determining flotation yield, and one of the factors affecting froth stability is dependent on the concentration and type of surfactant. Since detergents contain different types of surfactants, it is possible that they affect the froth stability (together with the frothing agent and the collector) and consequently the flotation yield. Therefore, the effect of detergents containing lauryldimethylamine oxide and sodium laureth sulphate was investigated in this study. The results showed that the addition of detergents increased the froth stability

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13

Barbian, N., E. Ventura-Medina, and J. J. Cilliers. "Dynamic froth stability in froth flotation." Minerals Engineering 16, no. 11 (2003): 1111–16. http://dx.doi.org/10.1016/j.mineng.2003.06.010.

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14

He, Gui Chun, Jin Ni Feng, Yi Peng Wu, Hua Mei Xiang, and Mei Chao Qi. "Relationship between Surface Froth Features and Flotation Indexes in the Flotation of a Sulphide Copper Ore." Advanced Materials Research 503-504 (April 2012): 650–53. http://dx.doi.org/10.4028/www.scientific.net/amr.503-504.650.

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Froth images are pre-processed, which are acquired at the flotation laboratory. Digital image analysis techniques are used to analysize these froth images and their grey histogram and to extract statistical texture features of those froth images. Finally, the relation model for statistical texture features of those froth images and flotation index is established by RBF neural networks. A simulation showed that the relation model is higher precise

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15

Duoc, Tran Van, Nguyen Hoang Son, Nhu Thi Kim Dung, and Vu Thi Chinh. "Recovery of clean coal from blast furnace dusts by flotation column." Journal of Mining and Earth Sciences 61, no. 1 (2020): 124–31. http://dx.doi.org/10.46326/jmes.2020.61(1).14.

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The paper presents the results of the study on recovery of clean coals from blast furnace dusts of the Cao Bang Iron Steel plant. The study has explored the effects of the most important operating parameters on the coal flotation performance including flotation reagent dosage, solid concentration, froth wash-water rate, flotation time and the froth thickness. The results of the study showed that using a combination of a rougher and a cleaning flotation operations at respectively collector dosage, solid concentration, flotation time, froth wash-water rate and froth thickness of 1000 g/t, 100 g/

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16

Matis, K. A., and P. Mavros. "Foam/Froth Flotation." Separation and Purification Methods 20, no. 2 (1991): 163–98. http://dx.doi.org/10.1080/03602549108021414.

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17

Khan, Shaihroz, Omar Bashir Wani, Mohammad Shoaib, et al. "Mineral carbonation for serpentine mitigation in nickel processing: a step towards industrial carbon capture and storage." Faraday Discussions 230 (2021): 172–86. http://dx.doi.org/10.1039/d1fd00006c.

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We incorporate the carbonation of ultramafic ore followed by froth-flotation to enhance nickel recovery in the beneficiation stage, instead of the traditional froth-flotation step for nickel processing.

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18

Wang, Xuexia, Juan Zhang, Muhammad Bilal, Xiangning Bu, and Yemin Wang. "Effects of Sec-Octanol and Terpineol on Froth Properties and Flotation Selectivity Index for Microcrystalline Graphite." Minerals 13, no. 9 (2023): 1231. http://dx.doi.org/10.3390/min13091231.

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Microcrystalline graphite is a valuable non-metallic mineral that can be separated by flotation, a physico-chemical processing method that uses air bubbles to capture mineral particles. The size and stability of the bubbles, which depend on the type and amount of frother added, affect the flotation performance and the recovery of water from the froth layer. However, the effects of different types of frother on the froth properties and water recovery of microcrystalline graphite flotation are not well understood. In this study, two common frothers, sec-octanol and terpineol, were compared in te

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19

Fan, Zunguan, Yifan Feng, Kang Wang, and Xiaoli Li. "Multi-Modal Temporal Hypergraph Neural Network for Flotation Condition Recognition." Entropy 26, no. 3 (2024): 239. http://dx.doi.org/10.3390/e26030239.

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Efficient flotation beneficiation heavily relies on accurate flotation condition recognition based on monitored froth video. However, the recognition accuracy is hindered by limitations of extracting temporal features from froth videos and establishing correlations between complex multi-modal high-order data. To address the difficulties of inadequate temporal feature extraction, inaccurate online condition detection, and inefficient flotation process operation, this paper proposes a novel flotation condition recognition method named the multi-modal temporal hypergraph neural network (MTHGNN) t

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20

Lu, Fucheng, Na Liu, and Haizeng Liu. "Investigating the Influence of Froth Image Attributes on Clean Coal Ash Content: A Novel Hybrid Model Employing Deep Learning and Computer Vision Techniques for Prediction Exploration." Minerals 14, no. 6 (2024): 536. http://dx.doi.org/10.3390/min14060536.

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In froth flotation, one of the pivotal metrics employed to evaluate the flotation efficacy is the clean ash content, given its widely acknowledged status as a paramount gauge of coal quality. Leveraging deep learning and computer vision, our study achieved the dynamic recognition of coal flotation froth, a key element for predicting and controlling the ash content in coal concentrate. A comprehensive dataset, assembled from 90 froth flotation videos, provided 16,200 images for analysis. These images revealed key froth characteristics including bubble diameter, quantity, brightness, and burstin

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21

Li, Yujiao, Haizeng Liu, and Fucheng Lu. "Research on Prediction of Ash Content in Flotation-Recovered Clean Coal Based on NRBO-CNN-LSTM." Minerals 14, no. 9 (2024): 894. http://dx.doi.org/10.3390/min14090894.

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Ash content is an important production indicator of flotation performance, reflecting the current operating conditions of the flotation system and the recovery rate of clean coal. It also holds significant importance for the intelligent control of flotation. In recent years, the development of machine vision and deep learning has made it possible to detect ash content in flotation-recovered clean coal. Therefore, a prediction method for ash content in flotation-recovered clean coal based on image processing of the surface characteristics of flotation froth is studied. A convolutional neural ne

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22

Martinez, Jose, Miguel Maldonado, and Leopoldo Gutierrez. "A Method to Predict Water Recovery Rate in the Collection and Froth Zone of Flotation Systems." Minerals 10, no. 7 (2020): 630. http://dx.doi.org/10.3390/min10070630.

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This paper describes a method to predict water recovery rate into and through the foam in a bubble column operating under different gas rates, froth depths, and frother types and concentrations. Three frothers were considered: Metil Isobutil Carbinol (MIBC), a proprietary blend of alcohols, aldehydes, and esters commercialized under the name PINNACLE® 9891, and a PGE-based Dow Froth 1012 (DF1012). The water rate entering into the froth (foam) layer from the bubbly (collection) zone was estimated as the water rate overflowing the column when operating at a thin stable foam layer, i.e., 0.5 cm.

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23

Morozov, Iurii, Tatiana Intogarova, Olga Valieva, and Iuliia Donets. "Flotation classification in closed-circuit grinding as a way of reducing sulphide ore overgrinding." Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal, no. 1 (February 17, 2021): 85–96. http://dx.doi.org/10.21440/0536-1028-2021-1-85-96.

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Research object and aim. Flotation classification in closed-circuit grinding is a way of improving copper ore flotation indicators by reducing minerals overgrinding. Due to valuable components froth recovery with their uncovering in the process of grinding, loss of copper in flotation tailings with secondary slime are reduced significantly. The research aims to study the possibility to improve the flotation of copper ore based on the use of flotation classification in the closed-circuit grinding. Methodology. In order to solve the problem, laboratory studies on closed-circuit grinding experime

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24

He, Mingfang, Chunhua Yang, Weihua Gui, and Yiqiu Ling. "Performance Recognition for Sulphur Flotation Process Based on Froth Texture Unit Distribution." Mathematical Problems in Engineering 2013 (2013): 1–9. http://dx.doi.org/10.1155/2013/530349.

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As an important indicator of flotation performance, froth texture is believed to be related to operational condition in sulphur flotation process. A novel fault detection method based on froth texture unit distribution (TUD) is proposed to recognize the fault condition of sulphur flotation in real time. The froth texture unit number is calculated based on texture spectrum, and the probability density function (PDF) of froth texture unit number is defined as texture unit distribution, which can describe the actual textual feature more accurately than the grey level dependence matrix approach. A

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25

Juřicová, Hana, and František Tichánek. "Reflotation of Coal Flotation Tailings using Foam Separation / Reflotace Černouhelných Flotačních Hlušin Pomocí Pěnové Separace." GeoScience Engineering 57, no. 1 (2011): 9–13. http://dx.doi.org/10.2478/gse-2014-0019.

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Abstract Froth separation is one of the new methods of flotation process in mineral treatment. This method allows a substantial increase in the size upper limit of separated grains. The contribution deals with the verification of the possibility of using the froth separation for retreatment of flotation tailings. For laboratory research samples of flotation tailings from the Paskov Mine treatment complex were used. The results confirmed the ability of froth separation to convert coarse coal grains into a concentrate. Grains with a grain size of 0.5 mm were successfully reflotated.

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26

Sygusch, Johanna, Nora Stefenelli, and Martin Rudolph. "Ultrafine Particle Flotation in a Concept Flotation Cell Combining Turbulent Mixing Zone and Deep Froth Fractionation with a Special Focus on the Property Vector of Particles." Minerals 13, no. 8 (2023): 1099. http://dx.doi.org/10.3390/min13081099.

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Froth flotation faces increasing challenges in separating particles as those become finer and more complex, thus reducing the efficiency of the separation process. A lab flotation apparatus has been designed combining the advantages of agitator-type froth flotation for high turbulences and column flotation with a deep froth zone for a fractionating effect, also enabling a study on the effect of different particle property vectors. A model system of ultrafine (<10 µm) particles was used for flotation to study how the separation process is influenced by the ultrafine property vectors of shape

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27

Jera, Tawona Martin, and Clayton Bhondayi. "A Review on Froth Washing in Flotation." Minerals 12, no. 11 (2022): 1462. http://dx.doi.org/10.3390/min12111462.

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In the attempt to process lower-grade ores, mineral flotation has taken centre stage as the preferred recovery route. However, in many instances, the froth product does not have a high grade due to the entrainment of gangue minerals. Industry has solved this challenge by introducing froth washing mechanisms. Clean wash water is introduced into or on top of the froth to reduce the amount of entrained gangue in the final concentrate. This article reviews froth-washing systems in detail and highlights the advantages and disadvantages of each wash-water delivery mechanism. Comments on industrial u

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28

Allix, Jérémy, Davide Beneventi, Elisa Zeno, and Patrice Nortier. "Flotation de-inking of 50% ONP/50% OMG recovered papers mixtures using nonionic surfactant, soap, and surfactant/soap blends." BioResources 5, no. 4 (2010): 2690–701. http://dx.doi.org/10.15376/biores.5.4.2702-2719.

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A laboratory flotation column equipped with Venturi aerators and an adjustable froth removal system was used to study the effect of calcium soap and a mixture of calcium soap/alkyl phenol ethoxylate surfactant on ink and fibres transfer during flotation de-inking of a 50% old newprint (ONP) / 50% old magazines (OMG) recovered papers mixture. Mass transport phenomena determining the yield of the flotation process were interpreted using model equations describing particle removal in terms of flotation, entrainment, and drainage in the froth. A decrease in the ink and mineral fillers flotation ra

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29

Galas, Jacek, and Dariusz Litwin. "Machine Learning Technique for Recognition of Flotation Froth Images in a Nonstable Flotation Process." Minerals 12, no. 8 (2022): 1052. http://dx.doi.org/10.3390/min12081052.

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The paper is focused on the analysis of the relation between the stability of the flotation process and the efficiency of Machine Learning (ML) algorithms based on the flotation froth images. An ML process should enable researchers to construct Artificial Intelligence (AI) algorithms for flotation process control. The image of the flotation froth includes information characterizing the flotation process. The information can be extracted with the aid of the Image Recognition (IR) algorithms based on the ML. This enables construction of a flotation process control system in the mineral processin

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30

Mondal, Sangita, Animesh Acharjee, Ujjwal Mandal, and Bidyut Saha. "Froth flotation process and its application." Vietnam Journal of Chemistry 59, no. 4 (2021): 417–25. http://dx.doi.org/10.1002/vjch.202100010.

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AbstractThe paper is about the froth flotation process and its application. It is a metallurgical process for the extraction of metals in a pure state from their ores: especially for sulfide ores. Froth flotation is one of the steps which is generally performed before roasting and it deals with the surface chemistry of liquids and of the minerals to be separated. This process requires a particular setup to be performed which contains different components. Surfactants play the most important role here. Different types of surfactants are used in different ways and each of them plays a crucial ro

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31

Taner, Hasan Ali, and Vildan Onen. "Study of chalcopyrite flotation in the presence of illite using a design of experiments approach." Clay Minerals 56, no. 3 (2021): 197–209. http://dx.doi.org/10.1180/clm.2021.35.

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AbstractThe interaction between chalcopyrite and illite particles was analysed using ζ-potential measurements and flotation tests. Statistically designed tests were used to examine the factors controlling flotation (frother concentration, dispersant concentration, froth height, airflow rate and amount of clay). Furthermore, the significance levels of the impacts of these factors on responses (chalcopyrite grade/recovery, pyrite grade/recovery, dynamic froth stability and mean bubble diameter) were determined. Chalcopyrite and pyrite ζ-potentials were measured in the presence of illite. The add

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32

Cao, Qin Bo, Shu Ming Wen, Chen Xiu Li, Shao Jun Bai, and Dan Liu. "Application of New Flotation Machine on Phosphate Flotation." Advanced Materials Research 616-618 (December 2012): 624–27. http://dx.doi.org/10.4028/www.scientific.net/amr.616-618.624.

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Phosphate is a typical oxide ore characterizing that generating abundant froth during flotation. In this research a new flotation machine was employed in the flotation of phosphate. Comparing to regular flotation machine, in the reverse flotation of dolomite the recovery and grade of MgO has no significance improvement. While, in the case of reverse flotation of silicon dioxide, the new flotation machine has significance advantage. In 5 minutes of flotation time, the yield of froth is 20.66% with new machine, which equals to yield using regular machine under 8 minutes. The flotation time has b

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33

Laraba, M. "Enrichment of Algerian kaolin using froth flotation method." Gornye nauki i tekhnologii = Mining Science and Technology (Russia) 8, no. 3 (2023): 215–22. http://dx.doi.org/10.17073/2500-0632-2023-04-112.

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The objective of this research is to study the removal of coloring impurities from Algerian kaolin ore (Tamazert kaolin, TK) located in the eastern region of Algeria, utilizing froth flotation process. The results obtained from XRF, SEM, and XRD characterization demonstrate that this local material is an alumino-silicate containing kaolinite, along with impurities such as Fe2O3 (> 2.7 % by weight) and TiO2 (0.28 % by weight) which contribute to its coloring. After homogenization, crushing and milling, several froth flotation tests were conducted on TK. The results revealed that Tamazert kao

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34

LASKOWSKI, J. S. "Frothers and Flotation Froth." Mineral Processing and Extractive Metallurgy Review 12, no. 1 (1993): 61–89. http://dx.doi.org/10.1080/08827509308935253.

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35

Li, Zongxin, Yu Fu, Zhan Li, Nan Nan, Yimin Zhu, and Yiwen Li. "Froth flotation giant surfactants." Polymer 162 (January 2019): 58–62. http://dx.doi.org/10.1016/j.polymer.2018.12.023.

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36

Rivard, Benoit, Jilu Feng, Derek Russell, Vivek Bhushan, and Michael Lipsett. "Hyperspectral Characteristics of Oil Sand, Part 1: Prediction of Processability and Froth Quality from Measurements of Ore." Minerals 10, no. 12 (2020): 1138. http://dx.doi.org/10.3390/min10121138.

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This study is the first of two companion papers using hyperspectral data to generate predictive models of oil sand ore and froth characteristics as a potential new means for process control. In Alberta, Canada, shallow oil sands deposits are accessed by surface mining and crushed ore is transported to a processing plant for extraction of bitumen using flotation processes. The ore displays considerable variability in clay, bitumen, and fines which affects their behavior in flotation units. Using oil sand ore spanning a range of bitumen and fines characteristics, flotation experiments were perfo

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37

Jiang, Haibing, Jiufen Liu, Huaifa Wang, et al. "Study on Combined Vacuum–Mechanical Defoaming Technology for Flotation Froth and Its Mechanism." Processes 10, no. 6 (2022): 1183. http://dx.doi.org/10.3390/pr10061183.

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Foam is essential in the flotation process. However, the gas–liquid–solid three-phase froth produced in the flotation process has very strong stability and is difficult to burst spontaneously. The existence of these froths will reduce the transport capacity of the pulp and affect the working efficiency of subsequent processes, such as filtration of the flotation concentrate. In this study, a new defoaming device is designed by combining mechanical impact with depressurized defoaming and its defoaming mechanism is analyzed theoretically. In addition, the liquid level height and pulp overflow me

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38

Nhu, Dung Kim Thi, Son Hoang Nguyen, Chinh Thi Vu, and Duoc Van Tran. "Study on the effects of some parameters on the flotation performance of Vang Danh coal fines -0.3 mm in the reflux flotation cell." Journal of Mining and Earth Sciences 61, no. 2 (2020): 68–75. http://dx.doi.org/10.46326/jmes.2020.61(2).08.

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In the world, the coal fines usually are upgraded in flotation columns (Jameson, Pneufloat, Microcell,...). The reflux flotation cell is a novel type of flotation column that uses a system of inclined channels to enhance bubble - liquid segregation in flotation. Additionally, in this type of device, it is used a special froth washing mechanism with pressurized water to ameliorate the quality of cleaned coals. This type of device has a simple structure, high capacity and allows to receive cleaned coals of high quality. This paper presents the test results of coal fines samples -0,3mm from Vang

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39

Bournival, Ghislain, Seher Ata, and Graeme J. Jameson. "Bubble and Froth Stabilizing Agents in Froth Flotation." Mineral Processing and Extractive Metallurgy Review 38, no. 6 (2017): 366–87. http://dx.doi.org/10.1080/08827508.2017.1323747.

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40

Li, Chao, Kym Runge, Fengnian Shi, and Saeed Farrokhpay. "Effect of flotation froth properties on froth rheology." Powder Technology 294 (June 2016): 55–65. http://dx.doi.org/10.1016/j.powtec.2016.02.018.

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41

Piñeres Mendoza, Jorge Luís, Juan Manuel Barraza Burgos, and Astrid del Socorro Blandón Montes. "Flotation kinetic constants of two Colombian coals' vitrinite maceral." Ingeniería e Investigación 29, no. 3 (2009): 29–35. http://dx.doi.org/10.15446/ing.investig.v29n3.15179.

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Vitrinite maceral flotation kinetic constants are important in designing flotation columns to be used in separating this maceral group. This work shows the effect of pH, air speed and froth concentration on vitrinite maceral flotation kinetic constants by using two Colombian bituminous coals: El Cerrejón (Guajira) and La Jagua (Cesar). A 5 m high pilotscale flotation column was used in all runs. The samples were processed using 4-10 pH, 0.7-2.1 cm/s air speed and 2-6 ml/kg of coal froth concentration ranges. Both La Jagua and El Cerrejón coals showed high kinetic constants figures in acid cond

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42

Liu, Hongchang, Mingfang He, Weiwei Cai, Guoxiong Zhou, Yanfeng Wang, and Liujun Li. "Working Condition Recognition of a Mineral Flotation Process Using the DSFF-DenseNet-DT." Applied Sciences 12, no. 23 (2022): 12223. http://dx.doi.org/10.3390/app122312223.

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The commonly used working condition recognition method in the mineral flotation process is based on shallow features of flotation froth images. However, the shallow features of flotation froth images frequently have an excessive amount of redundant and noisy information, which has an impact on the recognition effect and prevents the flotation process from being effectively optimized. Therefore, a working condition recognition method for the mineral flotation process based on a deep and shallow feature fusion densely connected network decision tree (DSFF-DenseNet-DT) is proposed in this paper.

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43

Silva, A. C., D. N. Sousa, E. M. S. Silva, T. P. Fontes, R. S. Tomaz, and M. R. Barros. "Temperature Influence in Cornstarch Gelatinization for Froth Flotation." International Proceedings of Chemical, Biological and Environmental Engineering 96 (2016): 7–11. http://dx.doi.org/10.7763/ipcbee.2016.v96.2.

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44

Romachev, Artem, Valentin Kuznetsov, Egor Ivanov, and Benndorf Jörg. "Flotation froth feature analysis using computer vision technology." E3S Web of Conferences 192 (2020): 02022. http://dx.doi.org/10.1051/e3sconf/202019202022.

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The possibility of machine vision application in the field of flotation efficiency evaluation was studied. Algorithm for froth image analysis was developed with aim of obtaining bubble’s size distribution. Algorithm consists of two parts: image processing and object detection. Algorithm’s work was verified on the sulfide flotation froth. As result, mathematical correlations for air flow rate, mean bubble diameter and surface area bubble flux were established.

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45

Lepage, Mark R., Cesar O. Gomez, and Kristian E. Waters. "Using Top-of-Froth Conductivity to Infer Water Overflow Rate in a Two-Phase Lab-Scale Flotation Column." Minerals 12, no. 4 (2022): 454. http://dx.doi.org/10.3390/min12040454.

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The metallurgical performance of a flotation machine is largely defined by phenomena occurring in the froth zone. The water content in the froth affects recovery by influencing froth stability and mobility and, at the same time, reduces grade by mechanical entrainment of gangue particles in the overflow water. Efficient operation requires a compromise between the water carried by bubbles from the collection zone and that which overflows. It is believed that the most suitable operating strategy could be based on the measurement of froth water content, as a strong correlation with water overflow

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46

Haapala, Antti, Mika Körkkö, Kalle Kemppainen, Donald MacNeil, and Jouko Niinimäki. "Purification of white waters by selective flotation." BioResources 5, no. 4 (2010): 2153–72. http://dx.doi.org/10.15376/biores.5.4.2153-2172.

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Removal of detrimental contaminants from paper machine circulation waters is known to benefit process runnability and paper quality. The applicability of selective flotation to remove substances of a hydrophobic nature from paper machine circulation waters was investigated in laboratory-scale experiments. The separation efficiency of ink, stickies, and wood extractives was studied by using a flotation scheme in which the froth was generated by the white water’s inherent surface active components without any chemical addition. The removal efficiency of detrimental contaminants was considered in

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47

Manono, Malibongwe S., Katlego Matibidi, Iyiola O. Otunniyi, Catherine K. Thubakgale, Kirsten C. Corin, and Jenny G. Wiese. "The Behaviour of Mixtures of Sodium Iso-Butyl Xanthate and Sodium Di-Ethyl Dithiophosphate during the Flotation of a Cu-Ni-Pt Ore in Degrading Water Quality." Minerals 10, no. 2 (2020): 123. http://dx.doi.org/10.3390/min10020123.

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The use of mixtures of thiol collectors is reportedly beneficial in sulfide flotation. This is becoming standard practice for many concentrators, but process water recirculation and re-use in flotation circuits may compromise the behaviour of such mixtures owing to changes in physicochemical interactions occurring in the pulp phase as a result of water quality variations. It is expected that changes in the pulp chemistry would in turn affect both the pulp and froth phase phenomena, thereby affecting flotation performance. Thus, this study considers mixtures of thiol collectors, sodium iso-buty

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48

Nichols, Keir A., and Brent M. Goehring. "Isolation of quartz for cosmogenic in situ <sup>14</sup>C analysis." Geochronology 1, no. 1 (2019): 43–52. http://dx.doi.org/10.5194/gchron-1-43-2019.

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Abstract. Froth flotation is a commonly used procedure for separating feldspars and micas from quartz for the preparation of quartz mineral separates to carry out cosmogenic nuclide analysis. Whilst extracting carbon from quartz we observed in situ carbon-14 (14C) concentrations which were anomalously high and in excess of theoretical geological maximum concentrations. Further etching of sample material reduced carbon yields and 14C concentrations, yet the latter remained unrealistically high. When quartz from the original whole rock sample was isolated in our laboratory, we observed even lowe

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49

Ruismäki, Ronja, Tommi Rinne, Anna Dańczak, Pekka Taskinen, Rodrigo Serna-Guerrero, and Ari Jokilaakso. "Integrating Flotation and Pyrometallurgy for Recovering Graphite and Valuable Metals from Battery Scrap." Metals 10, no. 5 (2020): 680. http://dx.doi.org/10.3390/met10050680.

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Since the current volumes of collected end-of-life lithium ion batteries (LIBs) are low, one option to increase the feasibility of their recycling is to feed them to existing metals production processes. This work presents a novel approach to integrate froth flotation as a mechanical treatment to optimize the recovery of valuable metals from LIB scrap and minimize their loss in the nickel slag cleaning process. Additionally, the conventional reducing agent in slag cleaning, namely coke, is replaced with graphite contained in the LIB waste flotation products. Using proper conditioning procedure

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50

Chen, Yanfei, Yuanlin Chen, and Lei Zhang. "Effect of the Molecular Weight of Carboxymethyl Cellulose on the Flotation of Chlorite." Materials 16, no. 9 (2023): 3356. http://dx.doi.org/10.3390/ma16093356.

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The present study aimed to investigate the influence mechanism of carboxymethyl cellulose (CMC) on the flotation of fine chlorite. To this end, a series of flotation tests, sedimentation tests, and microscope analyses were conducted. Flotation tests revealed an inverse relationship between particle size and the recovery of chlorite, indicating that finer particles exhibited higher recovery rates. Moreover, it was observed that the recovery of fine chlorite was significantly associated with the water recovery (proportion of water entering the floated product to the weight of water in the initia

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