Influence of depressant foenum-graecum on the flotation of a sulfide ore which contains hydrophobic gangue

Zhao, Kongshuang; Gu, Gang Hee; Wang, H.; Wang, C.L.; Wang, X.H.; Luo, Cheng

doi:10.1016/j.minpro.2015.06.005

Cited by 24 publications

(11 citation statements)

References 23 publications

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“…The peak at 1654 cm −1 is attributed to the ring stretching vibration of a carbon oxygen six-member ring [21]. The peak at 1159 cm −1 is produced by the stretching vibration of C-O, while the peaks at 1079 and 1012 cm −1 belong to the stretching vibration of C-O in -CH 2 -OH and -CH-OH [5,22]. In the IR spectrum of PBX, the peak at 1064 cm −1 is attributed to the C=S stretching vibration.…”

Section: Ftir Spectra Analysismentioning

confidence: 98%

“…The presence of these gangue minerals at high concentrations will not only increase the smelting cost but will also reduce the smelting efficiency [4,5]. Talc, with its excellent natural hydrophobicity, has been universally researched as the typical gangue mineral during sulfide mineral flotation [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

“…However, it still has drawbacks such as high cost and limited availability [5,8,13,14]. To identify more economical depressants, attempts have been made by researchers to investigate new depressants such as galactomannan and foenum-graecum that are easier to obtain, have a high depression selectivity for magnesium silicates and little depression effect on nickel minerals [5,15]. In this study, we would like to introduce a new polysaccharide depressant, konjac gum (KG), that is extracted from konjac, which is widely planted in the southwest and midwest of China.…”

Section: Introductionmentioning

confidence: 99%

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Flotation and Adsorption of a New Polysaccharide Depressant on Pyrite and Talc in the Presence of a Pre-Adsorbed Xanthate Collector

Deng

Tian

et al. 2017

Minerals

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Abstract:The flotation and adsorption of a new polysaccharide konjac gum (KG) on pyrite and talc in the presence of pre-adsorbed potassium butyl xanthate (PBX) is investigated. The micro-flotation results show that KG is a quality depressant for talc and that conditioning the minerals initially with PBX before KG will increase the recovery difference between pyrite and talc. The results of artificially mixing the minerals show that compared with adding KG before PBX, when minerals are pre-adsorbed with PBX, the grade and the recovery of sulfur (S) increases by 1.96% and 5.44%, respectively. The contact angle results show that the addition of PBX before KG will increase the contact angles of pyrite, but the addition order of KG/PBX has little influence on the contact angles of talc. The adsorption tests show that KG can adsorb on pyrite and talc surfaces, while PBX can only adsorb on the pyrite surface. The addition order of KG/PBX affects the adsorption of KG and PBX on the pyrite surface but not on the talc surface. Fourier transform infrared (FTIR) spectra analysis further demonstrates the chemical adsorption of KG on pyrite and talc surfaces, while PBX chemisorbs on the pyrite surface. Based on these analyses, a schematic illustration of the reagent adsorption forms on pyrite and talc surfaces is drawn to explain the competitive adsorption of KG and PBX on mineral surfaces.

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Section: Ftir Spectra Analysismentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Flotation and Adsorption of a New Polysaccharide Depressant on Pyrite and Talc in the Presence of a Pre-Adsorbed Xanthate Collector

Deng

Tian

et al. 2017

Minerals

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“…The IEP of bornite is at two pH values 2.8 and 6; the surface of all the three copper sulphides was mainly negatively charged over the pH range of 5-12. Zhao et al [26], Kelebek and Smith [27] and Fullston et al [28] reported similar IEP values for these minerals. The differences occur based on oxidation of sulphide surfaces.…”

Section: Resultsmentioning

confidence: 75%

Investigation of Copper Recovery from a New Copper Deposit (Nussir) in Northern-Norway: Thionocarbamates and Xanthate-Thionocarbamate Blend as Collectors

2019

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Norway has newly seen an upsurge of interest in exploiting its mineral deposits influenced by fresh Government focus and survey support for previously under-prospected areas. One of the major areas of interest is a huge copper deposit, operated by Nussir ASA, located in the Repparfjord tectonic window in the Caledonides of west Finnmark. The latest mineral resource estimation is from July 2014, which states that Nussir consists of 5.8 million tonnes of indicated resources and 60.2 million tonnes of inferred resources, giving 66 million tonnes of copper ore. This paper represents the first study on processing characteristics of this ore to date. Our parallel studies using xanthates and dithiophosphates as collectors for Nussir ore flotation examined the grade and recovery of copper, silver, gold, and platinum group (PGM) minerals. Therefore, in this subsequent study, a chelating agent n-Butoxycarbonyl-O-n-butyl thionocarbamate (BBT) is used as a collector and it was found that the recovery and grades of the economically interesting minerals are improved at as low as 2 × 10−5 M collector concentration. Zeta potential, Hallimond flotation and adsorption studies were initially performed in order to assess the selective interaction of BBT and its blend with SIBX (Sodium Isobutyl xanthate) on the three copper minerals of the ore. The bench scale flotation experiments were performed using mixtures of xanthate and thionocarbamate collectors of the Nussir ore and both the resulting copper recovery and grade employing these collector mixtures is observed to be 2–8% superior to the use of a single collector system. Additionally, the current study revealed that the metallurgical results are strongly influenced by the ratio of the collectors in the mixture and particularly the sequence of the collector addition.

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“…However, on the whole, talc always exhibits a good natural floatability. Being naturally hydrophobic, as in nickel sulfide processing, talc easily leads to flotation concentrates, thus reducing the concentrate grade and causing downstream processing problems as well as increased smelting costs [6][7][8]. Therefore, it is a major problem in the presence of hydrophobic gangue in the separation between talc and different sulfide ores.…”

Section: Introductionmentioning

confidence: 99%

Influence of Particle Size in Talc Suppression by a Galactomannan Depressant

Chen

et al. 2018

Minerals

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Flotation behavior of different sizes of particles may follow different trends. The influence of particle size in talc suppression by a depressant galactomannan was studied in this research. The flotation response and mechanism were examined by flotation tests, modified flotation rate constant and entrainment recovery calculation, laser particle size experiments, adsorption tests, and advancing contact angle measurement as well as scanning electron microscopy (SEM) and energy dispersive X-ray spectrometry (EDS). The maximum recovery increased with particle size increases in the absence of galactomannan FPY (Fenugreek polysaccharide). The obviously suppressed effect was observed for the size fraction of −74 + 38 µm after reacting with FPY, but low efficiency was received for −38 µm and −10 µm, respectively. Laser particle size analysis indicated that the FPY has a certain function for the flocculation of fine particles. It is beneficial for reducing recovery by entrainment. EDS and advancing contact angle test results showed that the difference in contact angles probably is a result of genuine differences in the quantity of O and Mg bearing surface species, while the contact angle varied with particle size fraction in the absence of FPY. Adsorption and SEM test results demonstrated that in the case of −74 + 38 µm, the depressant adsorption density on the mineral surface is higher than the other two size fractions. On the whole, FPY probably is not enough of a depressant for talc suppression.

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Influence of depressant foenum-graecum on the flotation of a sulfide ore which contains hydrophobic gangue

Cited by 24 publications

References 23 publications

Flotation and Adsorption of a New Polysaccharide Depressant on Pyrite and Talc in the Presence of a Pre-Adsorbed Xanthate Collector

Flotation and Adsorption of a New Polysaccharide Depressant on Pyrite and Talc in the Presence of a Pre-Adsorbed Xanthate Collector

Investigation of Copper Recovery from a New Copper Deposit (Nussir) in Northern-Norway: Thionocarbamates and Xanthate-Thionocarbamate Blend as Collectors

Influence of Particle Size in Talc Suppression by a Galactomannan Depressant

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