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Journal articles on the topic 'Flotation. Adsorption'

Author: Grafiati

Published: 4 June 2021

Last updated: 13 February 2022

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1

Wei, Zhao, Junhao Fu, Haisheng Han, et al. "A Highly Selective Reagent Scheme for Scheelite Flotation: Polyaspartic Acid and Pb–BHA Complexes." Minerals 10, no. 6 (2020): 561. http://dx.doi.org/10.3390/min10060561.

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Previous studies have proved that the lead complexes of benzohydroxamic acid (Pb–BHA) are effective collectors of scheelite flotations; however, the separation of scheelite from calcite needs depressants with high selectivity. In this study, we reported a novel depressant for calcite minerals, and Pb–BHA served as the collector of scheelite. The flotation behavior of polyaspartic acid (PASP) in a scheelite and calcite flotation that uses Pb–BHA was determined via flotation experiments. Furthermore, the selective adsorption of PASP on the mineral surfaces and the effect of PASP on the adsorptio

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2

Pan, Guangjiu, Guofan Zhang, Qing Shi, and Wei Chen. "The Effect of Sodium Alginate on Chlorite and Serpentine in Chalcopyrite Flotation." Minerals 9, no. 3 (2019): 196. http://dx.doi.org/10.3390/min9030196.

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Chlorite and serpentine are common magnesium-containing gangue minerals in copper sulfide flotation. In this study, sodium alginate, a natural hydrophilic polysaccharide, was introduced as a selective depressant for these gangue minerals. Micro-flotation tests were conducted on both single minerals and synthetic mixtures. The flotation results showed that sodium alginate could simultaneously depress the flotation of chlorite and serpentine effectively, but seldom influenced the floatability of chalcopyrite at pH 9. In the ternary mixture flotation, a concentrate with a Cu grade of 31% could be

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3

Cao, Shiming, Yijun Cao, Zilong Ma, Yinfei Liao, and Xiaolin Zhang. "Interaction Mechanism of Ferric Ions with Celestite Surface and Implications for Flotation Recovery." Minerals 9, no. 7 (2019): 405. http://dx.doi.org/10.3390/min9070405.

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In practical celestite flotation, iron contamination is commonly found on celestite surfaces. The effect of ferric ions on celestite flotation was assessed by a combination of ion release experiments, DFT calculation, X-ray photoelectron spectroscopy (XPS) analysis, adsorption isotherm study, and flotation experiments in this work. The ion release experiments showed that the associated limonite released ferric ions to solution. According to DFT calculation and surface complexation theory, we found that ≡SrOH0 and ≡SO4H0 are primary functional groups on celestite surface in aqueous environments

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4

Feng, Hai Liang, Xiao Kui Che, Qi Zheng, and Li Cheng Ma. "The Experimental Study and Mechanism Analysis on Flotation Separation of Tetradymite and Pyrite." Advanced Materials Research 1092-1093 (March 2015): 1490–96. http://dx.doi.org/10.4028/www.scientific.net/amr.1092-1093.1490.

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The experimental results of flotation of pure tetradymite and pyrite show that HL-1 is an efficient collector for tetradymite flotation. Comparing to the butyl xanthate, HL-1 has stronger collector ability and higher selectivity. It solves the common problem of the separation of tetradymite and pyrite. The difference of adsorption quantity is consistent with results of the single mineral flotation test. Through the measurements of adsorption, zeta-potential, and FTIR spectral analysis, the flotation mechanism of tetradymite with HL-1 has been discussed. It is concluded that the adsorption of H

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5

Filippov, Lev, Saeed Farrokhpay, Lichau Lyo, and Inna Filippova. "Spodumene Flotation Mechanism." Minerals 9, no. 6 (2019): 372. http://dx.doi.org/10.3390/min9060372.

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Fine and coarse fractions of spodumene were obtained from a pegmatite ore and their flotation was investigated under different conditions. In particular, the optimum pH and collector dosage were studied. It was found that the best flotation performance occurs at pH 10 using 250 mg/L of sodium oleate. It was also observed that upon the addition of CaCl2, spodumene flotation recovery increases to about 90%. In addition, poor floatability was found for spodumene when Na2CO3 was used as a pH regulator (compared to NaOH).The zeta potential data confirmed the adsorption of oleate on the spodumene su

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6

Kondrat’ev, S. A., and E. A. Burdakova. "Physical Adsorption Validity in Flotation." Journal of Mining Science 53, no. 4 (2018): 734–42. http://dx.doi.org/10.1134/s1062739117042716.

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7

Zhang, Han Quan, and Feng Ling Wang. "Adsorption Selectivity of Fatty Acid Collector by Synthetic Magnetite." Applied Mechanics and Materials 552 (June 2014): 263–68. http://dx.doi.org/10.4028/www.scientific.net/amm.552.263.

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Selective adsorption of collectors on mineral surface can directly impact the flotation separation performance. Mineral flotation tests indicated that reverse flotation of synthetic magnetite can only bring a 2 to 4 percent increase in the concentrate grade, tailings grade remains high. The amounts of commonly used fatty acid collector, such as sodium oleate, adsorbed onto mineral surface are measured with indirect measurement to investigate adsorption selectivity of fatty acid collectors by synthetic magnetite. Results showed a higher selectivity in collector adsorption for natural magnetite,

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8

Xiong, Wenliang, Jie Deng, Kaile Zhao, Weiqing Wang, Yanhong Wang, and Dezhou Wei. "Bastnaesite, Barite, and Calcite Flotation Behaviors with Salicylhydroxamic Acid as the Collector." Minerals 10, no. 3 (2020): 282. http://dx.doi.org/10.3390/min10030282.

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The flotation of bastnaesite, as a major mineral source of rare earth elements, attracting much attention in the mineral processing field, is challenging owing to the natural flotability of calcium-bearing minerals. To promote the application of flotation, we systematically investigated the flotation behavior of bastnaesite, barite, and calcite, with salicylhydroxamic acid (SHA) as the collector through micro-flotation experiments, zeta-potential measurements, Fourier transform infrared (FT-IR) analyses, X-ray photoelectron spectroscopy (XPS) analyses, and solution chemistry analyses. Micro-fl

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9

Chen, Yumeng, Xiong Tong, Dongxia Feng, and Xian Xie. "Effect of Al (III) Ions on the Separation of Cassiterite and Clinochlore Through Reverse Flotation." Minerals 8, no. 8 (2018): 347. http://dx.doi.org/10.3390/min8080347.

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Most hydrophobic clay minerals, such as clinochlore, are known to cause problems in the recovery of cassiterite. In this study, a new reagent scheme, i.e., sodium oleate (NaOL) as a collector and Al (III) ions as a depressant, for reverse flotation separation of cassiterite and clinochlore was investigated. The flotation performance and interaction mechanism were studied by microflotation tests, adsorption tests, contact angle measurements, and X-ray photoelectron spectroscopy (XPS) analysis. Results of single mineral flotation experiments showed that NaOL had a different flotation performance

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10

Jiang, Wenli, Yulin Zhou, and Yimin Zhang. "The Effect of New Modified Fatty Acid (CY-23) Collector on Chlorite/Hematite Separation." Journal of Chemistry 2018 (2018): 1–6. http://dx.doi.org/10.1155/2018/5380480.

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The flotation separation on chlorite and hematite with the new modified fatty acid collector CY-23 was studied. The investigation included both flotation and reagent adsorption tests. And all the characteristics of chlorite surface before and after the adsorption of new collector CY-23 have been studied with X-ray photoelectron spectroscopy (XPS). The flotation results showed that caustic starch (CS) could depress the flotation of hematite and chlorite and CaCl2 could activate chlorite flotation but failed on hematite when using CY-23 as collector. The adsorption rate of CY-23 on the surface o

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11

Chen, Chao, Yong Sheng Song, Wen Juan Li, Wei Qu, Liu Lu Cai, and Yong Chen. "Study on Flotation Separation of Muscovite and Kaolinite." Advanced Materials Research 1092-1093 (March 2015): 1474–79. http://dx.doi.org/10.4028/www.scientific.net/amr.1092-1093.1474.

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The influence of dodecylamine acetate (DDA) and myristyl trimethyl ammonium chloride (1431) on the flotation behavior of muscovite and kaolinite were studied in this paper. The condition which can efficiently separate the muscovite and kaolinite was found out: 5×10-5mol·L-1~1×10-4mol·L-11431 as collector and pH=5.The feasibility of flotation separation in this condition was validated by artificial mixed minerals separation test. The results of zeta potential measurement, infrared spectrum analysis and adsorption quantity test show that 1431 was adsorbed on the surface on muscovite and kaolinit

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12

He, Gui Chun, Jin Ni Feng, Mei Xin Mao, and Yi Peng Wu. "Application of Combined Collectors in Flotation of Lepidolite." Advanced Materials Research 734-737 (August 2013): 921–24. http://dx.doi.org/10.4028/www.scientific.net/amr.734-737.921.

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Application of Combined Collectors in Flotation of Lepidolite were researched, and the object is the gravity concentration tailing of YiChun Tantalum&Niobium Mine. The experiments show: when LZ-00 dispensed by ourselves and mixed amine combined in two to one was used in lepidolite flotation, the flotation indexes is best,and the optimum dosage is 360g/t .The close circuit test can got the lepidolite concentrate with grade 4.12%, recovery 70.37% .It has a remarkable upgrading compared with the target of ore dressing plant . Infrared spectrum showed mineral surface existed chemical adsorptio

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13

Guo, Wenda, Yujie Cai, Yimin Zhu, Yanjun Li, and Yongsheng Sun. "Comparative Studies on Flotation Performance of Saturated Fatty Acids and Unsaturated Fatty Acids Separated from Hogwash Oil." Minerals 11, no. 1 (2021): 50. http://dx.doi.org/10.3390/min11010050.

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Low flotation recovery, high pulp temperature, and large dosage of reagents are the typical disadvantages when using mixed fatty acids (MFA) prepared from hogwash oil for flotation directly. To determine the type of fatty acid that yields poor flotation performance, flotation performance and adsorption characteristics of saturated fatty acids (SFA) and unsaturated fatty acids (UFA) separated from the MFA were studied in our work. GC-MS, FT-IR, iodine value detection and melting point measurement showed that UFA contained –(CH=CH–CH2)n- groups and had much lower melting point. Quartz flotation

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14

Liu, Guiqing, Bangsheng Zhang, Zhonglin Dong, et al. "Flotation Performance, Structure-Activity Relationship and Adsorption Mechanism of O-Isopropyl-N-Ethyl Thionocarbamate Collector for Elemental Sulfur in a High-Sulfur Residue." Metals 11, no. 5 (2021): 727. http://dx.doi.org/10.3390/met11050727.

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O-isopropyl-N-ethyl thionocarbamate (IPETC) collector was used to selectively recover elemental sulfur from a high-sulfur residue, and its flotation performance, structure–property relationship and adsorption mechanism to elemental sulfur were studied. The raw ore flotation test showed that IPETC displayed superior flotation performance to the elemental sulfur compared with sodium ethyl xanthate (SEX) and ammonium dibutyl dithiophosphate (ADDTP) collectors. Pure mineral flotation and adsorption experiments further demonstrated that among the three collectors, IPETC had the strongest collecting

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15

Bai, Limei, Jie Liu, Yuexin Han, Kai Jiang, and Wenqing Zhao. "Effects of Xanthate on Flotation Kinetics of Chalcopyrite and Talc." Minerals 8, no. 9 (2018): 369. http://dx.doi.org/10.3390/min8090369.

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This paper investigated the effects of using or not using potassium butyl xanthate (PBX) as a collector on the flotation kinetics of talc and chalcopyrite. By means of atomic force microscopy (AFM), Fourier-transform infrared spectroscopy (FTIR), a contact angle measuring instrument and particle size analyzer, the underlying causes behind the flotation rate changes of talc and chalcopyrite are analyzed. Experimental results showed that in collectorless flotation, the law of change in the flotation rate constant (k) of the two minerals over time is independent of pH, and k values of chalcopyrit

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16

Pan, Qing-qing, and Hui-qing Peng. "Effect of Copper and Iron Ions on the Sulphidizing Flotation of Copper Oxide in Copper Smelting Slag." Advances in Materials Science and Engineering 2018 (2018): 1–9. http://dx.doi.org/10.1155/2018/4656424.

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The treatment of smelting slag has attracted much attention nowadays. This study investigates the influence of Na2S, CuSO4, and FeCl3 on sulphidizing flotation of copper oxide. The results show that a proper Cu2+ concentration can increase the sulphidizing effect of copper oxide, while Fe3+ inhibits the sulphidizing effect. Further analysis shows that Cu2+ ions can reduce the surface potential, increase the S2− adsorption, then generate more polysulfide, and therefore promote the sulphidizing flotation. However, Fe3+ ions would increase the surface potential, reduce the S2− adsorption, generat

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17

Chibowski, E., B. Bilinski, W. Wojcik, M. A. Cabrerizo, and F. Gonzalez-Caballero. "Correlations between Adsorption and Desorption of Ionic Collectors on Celestite Surface and its Flotability." Adsorption Science & Technology 5, no. 1 (1988): 46–56. http://dx.doi.org/10.1177/026361748800500105.

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The adsorption and desorption of dodecylammonium chloride (DDAC1) and sodium dodecylsulfonate (DDSO3Na) has been investigated under the dynamic conditions existing during the flotation of celestite. It is shown that the flotability of the mineral may be correlated with the surface coverage of both collectors. The results obtained have been compared with static measurements of collector adsorption on a celestite surface. The surface coverage of celestite necessary for effective flotation has been found to be 2–3 statistical monolayers for DDAC1 and 1.5–2 statistical monolayers for DDSO3Na. The

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18

Hou, Ying, and Ahmed Sobhy. "New Insights on Sodium Oleate Adsorption on Quartz for Iron Direct Flotation under Weak-Acidic Condition." Tenside Surfactants Detergents 58, no. 3 (2021): 237–42. http://dx.doi.org/10.1515/tsd-2020-2342.

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Abstract To study the sodium oleate (NaOL) adsorption on quartz and its effect on flotation under weak-acidic conditions, the adsorption characteristics of NaOL on the surface of quartz were determined at pH = 6.5 by Fourier transform infrared spectroscopy (FTIR). The solution chemical calculation results show that NaOL exists as oleic acid (HOL) under weakly acidic conditions. The existence form and charge distribution of quartz and HOL were analyzed by Molecular Dynamics Simulation (MDS) using Materials Studio (MS) software, and the results showed that HOL is prone to the (101) and (100) sur

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19

Quezada, Gonzalo R., and Pedro G. Toledo. "Complexation of Alkali and Alkaline-Earth Metal Cations at Spodumene-Saltwater Interfaces by Molecular Simulation: Impact on Oleate Adsorption." Minerals 11, no. 1 (2020): 12. http://dx.doi.org/10.3390/min11010012.

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Spodumene, a lithium aluminum inosilicate, is recovered by froth flotation using surfactants, so-called collectors. Therefore, the behavior and properties of the water-mineral interface in saline solutions are central. Here, molecular dynamics simulations are used to study the adsorption of alkali and alkaline-earth metal cations from concentrated solutions on the weakest (110) surface plane of negatively-charged spodumene. Results include the envelope density function of inner-sphere complexes for each cation and the density of complexes according to their adsorption contacts. Visualization o

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20

Lu, Ying, Weiping Liu, Xuming Wang, Huaigang Cheng, Fangqin Cheng, and Jan D. Miller. "Lauryl Phosphate Flotation Chemistry in Barite Flotation." Minerals 10, no. 3 (2020): 280. http://dx.doi.org/10.3390/min10030280.

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Barite has numerous applications including barium mud for oil well drilling, manufacture of elemental barium, filler for paper and rubber industries, and contrast material for X-ray radiology for the digestive system. Currently, froth flotation is the main method for the beneficiation of barite using fatty acid as a typical collector. In this research, it was found that lauryl phosphate is also a promising collector for barite flotation. Results from microflotation, contact angle, and zeta potential indicate that lauryl phosphate is adsorbed on the barite surface and thus achieves superior flo

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21

Fan, Guixia, Liguang Wang, Yijun Cao, and Chao Li. "Collecting Agent–Mineral Interactions in the Reverse Flotation of Iron Ore: A Brief Review." Minerals 10, no. 8 (2020): 681. http://dx.doi.org/10.3390/min10080681.

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Froth flotation has been widely used in upgrading iron ores. Iron ore flotation can be performed in two technical routes: direct flotation of iron oxides and reverse flotation of gangue minerals with depression of iron oxides. Nowadays, reverse flotation is the most commonly used route in iron ore flotation. This review is focused on the reverse flotation of iron ores, consisting of reverse cationic flotation and reverse anionic flotation. It covers different types of collecting agents used in reverse iron ore flotation, the surface characteristics of minerals commonly present in iron ores (e.

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22

Ma, Zilong, Lei Wang, Xiao Ni, Yinfei Liao, and Zhian Liang. "Zinc Recovery from Wulagen Sulfide Flotation Plant Tail by Applying Ether Amine Organic Collectors." Molecules 26, no. 17 (2021): 5365. http://dx.doi.org/10.3390/molecules26175365.

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Separating oxidized zinc minerals from flotation tailings is always a challenge. In this study, a flotation tailing from Wulagen zinc mine in China (Zn grade < 1%) was processed using froth flotation with combinations of amines (OPA 10, OPA 1214, OPA 13, DDA) and Na2S to study the effects of these amines on the zinc recovery as well as their interactions with other reagents, aiming to screen out a proper reagent scheme to improve zinc separation from extremely low-grade zinc flotation tailings. The results show that different amines led to different flotation performance, and the collectors

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23

Liu, Dezhi, Guofan Zhang, Yanfei Chen, Wei Chen, and Yawen Gao. "A Novel Method to Limit the Adverse Effect of Fine Serpentine on the Flotation of Pyrite." Minerals 8, no. 12 (2018): 582. http://dx.doi.org/10.3390/min8120582.

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A novel method to limit the adverse effect of fine serpentine on the flotation of pyrite was investigated in this paper. The flotation results showed that coarser serpentine possessed a weaker depression effect on the pyrite flotation process, and the use of KAl(SO4)2·12H2O could efficiently limit the detrimental effect of fine serpentine on pyrite with a maximum increase of pyrite recovery from 14% to 86% at pH 9.0. The results of particle size measurements and rheological measurements exhibited that the addition of KAl(SO4)2·12H2O increased the particle size of serpentine buta hrdly affected

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24

Khoso, Sultan Ahmed, Zhiyong Gao, Xiangsong Meng, Yuehua Hu, and Wei Sun. "The Depression and Adsorption Mechanism of Polyglutamic Acid on Chalcopyrite and Pyrrhotite Flotation Systems." Minerals 9, no. 9 (2019): 510. http://dx.doi.org/10.3390/min9090510.

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The rejection of pyrrhotite and pyrite has become a long-standing problem in the copper ore industry. This paper describes the first successful depression and adsorption mechanism of a novel and non-hazardous reagent, polyglutamic acid (PGA), on pyrrhotite in the selective flotation of chalcopyrite with xanthate as the collector, making use of various laboratory-scale measurement techniques. The addition of PGA inhibited the flotation of pyrrhotite much more strongly than that of the chalcopyrite in a wide pH range. The prior addition of PGA achieved an improved selective flotation of chalcopy

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25

Venter, J. A., and M. K. G. Vermaak. "Mechanisms of trithiocarbonate adsorption: A flotation perspective." Minerals Engineering 21, no. 12-14 (2008): 1044–49. http://dx.doi.org/10.1016/j.mineng.2008.04.001.

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26

Von Rybinski, W., and M. J. Schwuger. "Adsorption of surfactant mixtures in froth flotation." Langmuir 2, no. 5 (1986): 639–43. http://dx.doi.org/10.1021/la00071a020.

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27

Uçar, A., and H. Özdag. "Mechanism of collector adsorption in fluorite flotation." Mineral Processing and Extractive Metallurgy 111, no. 2 (2002): 100–105. http://dx.doi.org/10.1179/mpm.2002.111.2.100.

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28

Fuerstenau, D. W. "Excess nonequilibrium collector adsorption and flotation rates." Mining, Metallurgy & Exploration 18, no. 2 (2001): 83–86. http://dx.doi.org/10.1007/bf03402876.

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29

Zhang, Chenyang, Qiqi Zhou, Bingxuan An, et al. "Flotation Behavior and Synergistic Mechanism of Benzohydroxamic Acid and Sodium Butyl-Xanthate as Combined Collectors for Malachite Beneficiation." Minerals 11, no. 1 (2021): 59. http://dx.doi.org/10.3390/min11010059.

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Sulfuration flotation is the most widely used technology in malachite beneficiation. However, the inhomogeneity of malachite surfaces usually results in a non-uniform sulfuration surface. The motivation of this work is attempt to adopt different functional combination collectors to enhance the sulfuration flotation of malachite. Accordingly, the flotation behaviors and adsorption mechanisms of benzohydroxamic acid (BHA) and sodium butyl-xanthate (SBX) on the surface of malachite were systematically investigated using flotation tests, zeta-potential measurements, Fourier-transform infrared (FTI

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30

Zhang, Chenyang, Qiqi Zhou, Bingxuan An, et al. "Flotation Behavior and Synergistic Mechanism of Benzohydroxamic Acid and Sodium Butyl-Xanthate as Combined Collectors for Malachite Beneficiation." Minerals 11, no. 1 (2021): 59. http://dx.doi.org/10.3390/min11010059.

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Sulfuration flotation is the most widely used technology in malachite beneficiation. However, the inhomogeneity of malachite surfaces usually results in a non-uniform sulfuration surface. The motivation of this work is attempt to adopt different functional combination collectors to enhance the sulfuration flotation of malachite. Accordingly, the flotation behaviors and adsorption mechanisms of benzohydroxamic acid (BHA) and sodium butyl-xanthate (SBX) on the surface of malachite were systematically investigated using flotation tests, zeta-potential measurements, Fourier-transform infrared (FTI

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31

Can, İlkay Bengü, Özlem Bıçak, Seda Özçelik, Metin Can, and Zafir Ekmekçi. "Sulphate Removal from Flotation Process Water Using Ion-Exchange Resin Column System." Minerals 10, no. 8 (2020): 655. http://dx.doi.org/10.3390/min10080655.

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Water chemistry is one of the most important parameters affecting flotation performance. Various types of ions can dissolve and accumulate in process water depending on ore mineralogy, reagent scheme, grinding medium and chemistry of mine site water. Sulfur-based ions (sulfate, thiosulfate, polythionate) are generally observed in flotation of sulfide ores. High concentrations of these ions may reduce efficiency of the flotation process, causing scale problems. Removal of these ions from process water often requires complex water treatment plants with high capital and operating costs. In this s

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32

Yang, Bo, Xiong Tong, Zhengbin Deng, and Xiangwen Lv. "The Adsorption of Cu Species onto Pyrite Surface and Its Effect on Pyrite Flotation." Journal of Chemistry 2016 (2016): 1–7. http://dx.doi.org/10.1155/2016/4627929.

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The adsorption of Cu species onto pyrite surface and its effect on flotation were investigated by using microflotation tests, first-principle calculations, and XPS surface analysis. The results indicated that the flotation of pyrite appears to be activated with CuSO4only at alkaline pH, while being depressed at acidic and neutral pH. The adsorption of copper ions on pyrite surface was pH-dependent, and the adsorption magnitude of copper ions at alkaline pH is higher than that at acidic and neutral pH due to a strong interaction between O atom in Cu(OH)2and surface Fe atom except for the intera

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33

Morais, Alessandra Gorette de, Carlos Adolpho Magalhães Baltar, and Carlos Alberto Pereira. "Lead recovery by flotation with sodium lauryl sulfate." Rem: Revista Escola de Minas 66, no. 1 (2013): 117–21. http://dx.doi.org/10.1590/s0370-44672013000100016.

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Lead recoverable slag is of economic and environmental importance. The aim of this study was to assess the possibilities of its recovery by flotation with sodium lauryl sulfate (SLS). The similar nature of the lead and iron particles formed by solidification of the melted slag impairs selectivity during the flotation process. In order to verify the most favorable conditions for selectivity, SLS adsorption mechanisms for lead and iron particles were studied. The adsorption was monitored by means of zeta potential and surface tension determinations. Flotation tests were conducted under the most

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34

Zhang, Wanjia, Wei Sun, Yuehua Hu, Jian Cao, and Zhiyong Gao. "Selective Flotation of Pyrite from Galena Using Chitosan with Different Molecular Weights." Minerals 9, no. 9 (2019): 549. http://dx.doi.org/10.3390/min9090549.

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Pyrite is a major gangue mineral associated with galena and other valuable minerals, and it is necessary to selectively remove pyrite to upgrade the lead concentrate by froth flotation. In this study, the flotation experiments of a single mineral and mixed minerals were performed using chitosan with different molecular weights (MW = 2−3, 3−6, 10 and 100 kDa) as a depressant, ethyl xanthate as a collector, and terpineol as a frother, in a bid to testify the separation of pyrite from galena. Flotation results showed that the selective flotation of pyrite from galena can be achieved under the pre

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35

Wang, Yubin, Yan Wang, Wei Xiao, Yaru Wei, and Shuqin Li. "Effect of Cu2+ on the Activation to Muscovite Using Electrochemical Pretreatment." Minerals 10, no. 3 (2020): 206. http://dx.doi.org/10.3390/min10030206.

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In this study, electrochemistry pretreatment flotation of muscovite was carried out and the flotation behavior and mechanism of muscovite in the system of sodium oleate and Cu2+ion was characterized by solution pH value detection, solution conductivity detection, zeta potential, infrared spectrum and the electronic energy spectrum. The results indicated that under the conditions of muscovite mass of 10.00 g, pulp mass concentration of 13.33%, flotation speed of 1750 r/min, sodium oleate concentration of 9.20 × 10−4 mol/L and Cu2+ concentration of 6 × 10−5 mol/L, electrochemical pretreatment of

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36

Mhonde, Ngoni, Nora Schreithofer, Kirsten Corin, and Mikko Mäkelä. "Assessing the Combined Effect of Water Temperature and Complex Water Matrices on Xanthate Adsorption Using Multiple Linear Regression." Minerals 10, no. 9 (2020): 733. http://dx.doi.org/10.3390/min10090733.

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The combined effect of dissolved ions and water temperature on the adsorption of a xanthate collector on chalcopyrite and pentlandite was investigated using multiple linear regression. Cationic species improved the adsorption of the collector on sulphide minerals through xanthate adsorption activation. Thiosulphate ions generally had a negative effect on collector adsorption, and the interaction of thiosulphate ions and cations effectively reduced collector adsorption on the sulphide minerals. With regards to temperature variation caused by seasonal variation, this study suggests that temperat

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Lin, Shangyong, Runqing Liu, Yongjie Bu, et al. "Oxidative Depression of Arsenopyrite by Using Calcium Hypochlorite and Sodium Humate." Minerals 8, no. 10 (2018): 463. http://dx.doi.org/10.3390/min8100463.

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During smelting, arsenic in copper concentrates affects the product quality and causes environmental pollution. Removing arsenic minerals from copper concentrates requires environmental-friendly and cost-effective depressants for flotation separation. Ca(ClO)2 was combined with sodium humate (SH) to improve the flotation separation of chalcopyrite from arsenopyrite. Results of single-mineral flotation indicated that combined Ca(ClO)2 and SH significantly inhibited arsenopyrite and exerted a negligible effect on chalcopyrite. The arsenic content in copper concentrates significantly decreased fr

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Li, Li Xia, Wan Zhong Yin, Dan Feng, and Bin Zhang. "Effect of Siderite on Reverse Flotation of Dong Anshan Iron Ore Containing Carbonates." Advanced Materials Research 455-456 (January 2012): 91–96. http://dx.doi.org/10.4028/www.scientific.net/amr.455-456.91.

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The content of carbonate minerals in Dong Anshan iron ore was increasing in recent years, which deteriorated reverse flotation indices or even resulted in unclear separation between concentrate and tailing. In dodecylamine and sodium oleate systems, reverse flotation tests were undertaken with artificial mixed minerals of martite, quartz and siderite. Based on mineral flotation tests, the effect mechanism of siderite on reverse flotation were investigated in terms of SEM and EDS. Results showed that siderite was weakly depressed by starch, and the adsorption of siderite on hematite and quartz

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Yu, Wu, Zhao, Zhu, and Luo. "Effect of a Small Amount of Iron Impurity in Sphalerite on Xanthate Adsorption and Flotation Behavior." Minerals 9, no. 11 (2019): 687. http://dx.doi.org/10.3390/min9110687.

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Through industrial testing at the Huize lead-zinc mine, it was found that the floatability of sphalerite varied greatly with the iron impurity content. Three kinds of Huize sphalerites with iron contents of 2.30 wt.%, 3.20 wt.% and 4.66 wt.%, were used to study the influence of small amounts of iron impurity in the sphalerite on xanthate adsorption and flotation behavior. The flotation experiments showed that the flotation recovery increased with the increase in iron impurity content. Fourier Transform infrared spectroscopy (FTIR) and Ultraviolet–visible (UV-VIS) spectra showed that the adsorb

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Luo, Bin, Junbo Liu, Quanjun Liu, et al. "A Mechanism for the Adsorption of 2-(Hexadecanoylamino)Acetic Acid by Smithsonite: Surface Spectroscopy and Microflotation Experiments." Minerals 9, no. 1 (2018): 15. http://dx.doi.org/10.3390/min9010015.

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Zinc is mostly extracted from oxidized zinc and zinc sulfide minerals, and this process involves flotation as a key step. While it is easier to float the sulfide mineral, its consumption and depletion has led to an increased reliance on oxidized zinc minerals, including smithsonite. Hence, the development of efficient ways of collecting smithsonite by flotation is an important objective. Herein, we describe the use of 2-(hexadecanoylamino)acetic acid (HAA), a novel surfactant, as a collector during smithsonite flotation. The mechanism and flotation performance of HAA during smithsonite flotati

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Wei, Zhao, Yuehua Hu, Haisheng Han, et al. "Selective Separation of Scheelite from Calcite by Self-Assembly of H2SiO3 Polymer Using Al3+ in Pb-BHA Flotation." Minerals 9, no. 1 (2019): 43. http://dx.doi.org/10.3390/min9010043.

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The flotation separation of scheelite from calcite is problematic, where sodium silicate modified by polyvalent metal ions has shown some advantages for selective depression. In this study, an Al-Na2SiO3 polymer was used as the depressant for the flotation separation of scheelite from calcite using a lead complex of benzohydroxamic acid (Pb-BHA) as the collector. Furthermore, a number of measurements were conducted to investigate the structure of the Al-Na2SiO3 polymer and its adsorption behavior with Pb-BHA complexes on the mineral surface. Flotation experiments indicated that the Al-Na2SiO3

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Long, Tao, Wei Xiao, and Wei Yang. "The effect of molecular assembly between collectors and inhibitors on the flotation of pyrite and talc." Royal Society Open Science 6, no. 10 (2019): 191133. http://dx.doi.org/10.1098/rsos.191133.

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In the flotation process, the traditional dosing sequence is to add an inhibitor first, followed by a collector. However, in the sorting process of copper sulfide ore, this method of dosing does not effectively separate sulfide minerals and layered magnesium silicate minerals. In this study, the effect of adding a guar gum (as an inhibitor) and potassium amyl xanthate (as a collector, shortened as PAX) sequence to the flotation separation of pyrite and talc was investigated by micro-flotation tests, adsorption amount measurements, contact angle measurement and FT-IR analysis. The results show

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Fujimoto, Hidekazu, Masahiko Matsukata, and Korekazu Ueyama. "Evaluation of Flotation Results Using Metanil Yellow Adsorption." JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 32, no. 3 (1999): 362–65. http://dx.doi.org/10.1252/jcej.32.362.

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Fuerstenau, M. C., and K. N. Han. "Metal–Surfactant Precipitation and Adsorption in Froth Flotation." Journal of Colloid and Interface Science 256, no. 1 (2002): 175–82. http://dx.doi.org/10.1006/jcis.2001.8089.

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Ren, Liuyi, Hang Qiu, Wenqing Qin, Ming Zhang, Yubiao Li, and Penggang Wei. "Inhibition mechanism of Ca 2+ , Mg 2+ and Fe 3+ in fine cassiterite flotation using octanohydroxamic acid." Royal Society Open Science 5, no. 8 (2018): 180158. http://dx.doi.org/10.1098/rsos.180158.

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The existence of metal ions should not be ignored in both hydrometallurgy and flotation. In this study, the effects of Ca 2+ , Mg 2+ and Fe 3+ on the flotation performance of cassiterite using octanohydroxamic acid (OHA) as the collector were investigated by micro-flotation tests, X-ray photoelectron spectroscopy (XPS), Fourier transform infrared (FTIR) spectroscopy, contact angle, zeta ( ζ ) potential measurements and atomic force microscopy (AFM) imaging. The results of the flotation and contact angle experiments showed that the addition of Ca 2+ , Mg 2+ and Fe 3+ significantly decreased bot

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Peng, Yaoli, Long Liang, Jiakun Tan, Jie Sha, and Guangyuan Xie. "Effect of flotation reagent adsorption by different ultra-fine coal particles on coal flotation." International Journal of Mineral Processing 142 (September 2015): 17–21. http://dx.doi.org/10.1016/j.minpro.2014.12.005.

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Li, Enze, Yanbin Zhang, Zhiping Du, Da Li, and Fangqin Cheng. "Bubbles facilitate ODA adsorption and improve flotation recovery at low temperature during KCl flotation." Chemical Engineering Research and Design 117 (January 2017): 557–63. http://dx.doi.org/10.1016/j.cherd.2016.11.016.

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Ksenofontov, B. S., A. S. Kozodaev, R. A. Taranov, and M. S. Vinogradov. "Physico-chemical Wastewater Treatment from Complex Organic Substances Using Flotocombs." Ecology and Industry of Russia 23, no. 12 (2019): 4–8. http://dx.doi.org/10.18412/1816-0395-2019-12-4-8.

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The issues of extraction of complex organic substances from wastewater using physico-chemical methods of coagulation, flotation, adsorption. At the same time, flotation combines of the KBS type are used at the flotation stage, which make it possible to effectively treat wastewater from suspended pollutants and complex organic substances. At the stage of sorption treatment, a deep extraction of complex organic substances occurs up to trace amounts, which allows to achieve the normative quality of water treatment with the possibility of discharge into an open reservoir.

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Han, Hua, An Liu, and Huaifa Wang. "Effect of Hydrodynamic Cavitation Assistance on Different Stages of Coal Flotation." Minerals 10, no. 3 (2020): 221. http://dx.doi.org/10.3390/min10030221.

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In this study, the effect of hydrodynamic cavitation (HC) on the conditioning stage (HCCS), separation stage (HCSS), and whole stage (HCWS) of coal flotation was investigated by flotation tests, laser granulometry, and contact angle measurements. The flotation results indicate that compared to conventional flotation, all HC-assisted flotation methods can improve concentrate combustible recovery and flotation constant rate. HCCS and HCSS show similar levels of improvement, while HCWS has a better flotation efficiency. The screening tests demonstrate that HC has the advantage of being able to li

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Lai, Hao, Jiushuai Deng, Guixia Fan, et al. "Mechanism Study of Xanthate Adsorption on Sphalerite/Marmatite Surfaces by ToF-SIMS Analysis and Flotation." Minerals 9, no. 4 (2019): 205. http://dx.doi.org/10.3390/min9040205.

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In this work, the active sites and species involved in xanthate adsorption on sphalerite/marmatite surfaces were studied using adsorption capacity measurements, single mineral flotation, and time-of-flight secondary ion mass spectrometry (ToF-SIMS) analysis. The effects of Fe concentration on the xanthate adsorption capacity, Cu activation, and the flotation response of sphalerite/marmatite were determined. A discovery was that xanthate can interact with Fe atoms in the crystal of sphalerite/marmatite, as well as with Zn and Cu on the surface. We detected C2S2− fragment ions from dixanthogen,

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