talc flotation developed

Shown in Fig. 1 b are the zeta potential distributions of talc and ink particles, individually and their binary mixture in the presence of 0.1 mM sodium oleate. Sodium oleate is a commonly used fatty acid family surfactant in paper de-inking practice. Note that the addition of sodium oleate shifted the zeta potential distributions of talc and ink …

Farrokhpay et al. [8] reported that in a copper flotation talc affected both copper recovery and concentrate grade via changing froth stability due to its natural hydrophobicity. It appears that the effect of clays on flotation performance closely depends on the clay nature. ... A vane method, developed for in-situ froth rheology measurement ...

Talc and mica are major gangue minerals in many base metal ores including sulfide ores. Talc is a naturally hydrophobic mineral, and therefore it is easily floatable. There have been many studies to overcome this problem, and depress talc with various reagents. In this study the flotation of a copper ore in the presence of talc and …

Both inorganic salts and macromolecular organic polymers have been developed for the depression of talc during flotation separation (Fuerstenau et al., 1988; Jin et al., 2021; Shortridge et al ...

Download Citation | On Dec 1, 2023, WU Yi-tong and others published Selective flotation separation of molybdenite and talc by yeast infusion with H2O2 peroxidation | Find, read and cite all the ...

The flotation test results showed that chalcopyrite can be selectively separated from talc with 20 mg/L pullulan as a depressant, and that the separation effect remains unaffected when the ...

Talc is used as an adsorbent, filtering agent, and adsorbent for pharmaceuti-cals in column chromatography and as a glidant in pharmaceutical products. Used as the surface of lab …

A novel thiadiazole derivative (CSC-1) was developed for the flotation of sulfide minerals. The results of flotation tests showed that, compared with the conventionally-used ethyl xanthate, using ...

1.. IntroductionCarboxymethyl cellulose is a commonly used polymer depressant for the rejection of talc in flotation (Bulatovic, 2007, Pugh, 1989).The literature on talc depression with CMC is extensive, with many studies on the role of solution pH and ionic strength (Khraisheh et al., 2005, Morris et al., 2002) in controlling adsorption and …

The flotation of talc and chalcopyrite. The influence of NMPC concentration on the flotation of talc and chalcopyrite was shown in Fig. 4. Both talc and chalcopyrite had good floatability without the addition of NMPC, and the recovery of each of them was about 92%. When NMPC concentration increased, the recovery of talc decreased …

Since flotation is the most effective beneficiation technique for upgrading sulfides, the high hydrophobicity of talc has made its selective separation challenging. This paper …

During froth flotation, the more non-polar, friable talc (Mg 3 (Si 2 O 5) 2 (OH) 2) usually adheres to the surface of sulfide ore and floats up, causing difficulties in flotation separation and subsequent industrial treatment.Microbial flotation as a green separation method avoids chemical contamination due to the limited selectivity and high agent …

Reducing the talc nanoparticles size from 567 nm to 235 nm resulted in significant decrease in the talc consumption from 45 kg t −1 to less than 2 kg t −1 to obtain the similar flotation recovery. An empirical equation was developed to predict the recovery of quartz as a function of flotation time, talc coverage and talc adsorption.

Microflotation results showed that adding ASS strengthened the inhibitory effect of CMC on talc and improved the separation of chalcopyrite and talc. The zeta …

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 …

The flotation results showed that chitosan is a useful depressant for talc flotation and that its depression effect is independent of pH. The adsorption mechanisms of chitosan were different at pH ...

Keywords: talc; chalcopyrite; flotation; combined inhibitor; apparent viscosity 1. Introduction Chalcopyrite is the most widely distributed copper miner-al in China. Talc, a …

Flotation is the preferred concentration technique to remove impurities from talc Kho and Sohn, 1989). Various factors that control the flotation process of talc include particle size, pH values ...

Abstract and Figures. Talc is a naturally hydrophobic gangue mineral in most sulfide ores. However, talc has vast applications in the cosmetics, paper, and paint industries due to its high ...

Efficient separation of naturally hydrophobic gangue, such as talc and carbonaceous materials, from sulphide minerals in flotation is becoming a significant challenge in many processing plants due to the need to process lower grade and more complex ores. Considering the hydrophobic nature of these gangue minerals, prefloating …

The depression mechanism of a combination of ZnSO 4 and Na 2 CO 3 on talc during chalcopyrite and molybdenite flotation was investigated in-depth using flotation tests, solution speciation calculations, and various characterization techniques. Flotation tests indicate that the effective depression of talc flotation occurred in the pH range of 7 ...

Recovery of talc was approximately 83% with a mean residence of 73 s and a whiteness of 84, which was significantly higher than that of a conventional agitation …

This study aims to introduce xanthan gum as a favorable selective depressant for talc depression in sulfide copper flotation. As chalcopyrite is a crucial industrial mineral and a vital constituent of high-quality copper mines [15], it was chosen to be on behalf of sulfide copper minerals.Micro-flotation experiments on single minerals as well as …

The depressant KGM was easily developed to depress talc. ... (KGM) on the depression of talc and the flotation of a nickel–copper sulfide ore have been investigated through microflotation, batch flotation and industrial flotation tests, zeta potential and infrared spectrum measurements. The flotation results indicated that KGM had a …

The flotation separation of talc and molybdenite is challenging due to their excellent inherent floatability. In this study, we innovatively used oxidant and inhibitor to …

Flotation testing on the treated talc revealed a hierarchy of effectiveness within the group of polymers studied. The observed trends in flotation performance are discussed with reference to the ...

Talc Flotation. 3.1. Collectors. Talc shows excellent floatability in a wide pH range (3–11) [24]. Although talc can be considered a naturally hydrophobic mineral, it might need treatment to float. Investigation on pure talc flotation showed that it could float easily [13,41] in a collectorless flotation system by adding frothers (alcohols ...

Talc is a magnesium silicate clay mineral and when present in molybdenite concentrate, contributes to the acid-insoluble content. Talc has a laminar structure as shown in Fig. 4.As can be seen, talc is a tri-layered hydrated magnesium silicate with a chemical formula of 3MgO·4SiO 2 ·H 2 O or Mg 3 (Si 2 O 5) 2 (OH) 2 (Xu et al., 2018, …

Recovery of talc was approximately 83% with a mean residence of 73 s and a whiteness of 84, which was significantly higher than that of a conventional agitation-type flotation cell. A mathematical model was developed to predict the recovery of talc, based on the rate constant calculated by Kelsall's method and the residence time distribution of ...

The flotation results indicated that carrageenan exhibited stronger depressing ability than the conventional talc depressants of CMC and guar gum, suggesting it could become a promising potential ...

Abstract. Flotation of low grade talc was carried out in a laboratory flotation column with fine air bubbles. Recovery of talc was approximately 83% with a mean residence of 73 s and a whiteness of 84, which was significantly higher than that of a conventional agitation-type flotation cell. A mathematical model was developed to …

It was demonstrated that the development of new selective depressants or pretreatment options for talc flotation requires attention in future investigations to …

The flotation and contact angle test results indicated that the hydrophobicity and floatability of talc were weakened, and the recovery decreased with the addition of tamarind polysaccharide gum ...

Flotation of the fine. groun d talc (less than 22 μm) produced a talc concentrate assaying 6.90% L.O.I. with a yield re-. covery of 62.91%. However, different talc concentrates obtained by just ...

The visual observation of talc B on the ink-coated collector surface with the impinging jet cell in 1 mM KCl solution (a), and 1 mM KCl solution containing 0.1 mM sodium oleate (b) at pH 9. As in the case of talc A, ink particles are covered by talc B, even though talc B was modified by cationic polyelectrolytes to render them positively charged.

Talc is a naturally hydrophobic gangue mineral in most sulfide ores. However, talc has vast applications in the cosmetics, paper, and paint industries due to its high …