Adsorption of O-isopropyl-N-ethyl thionocarbamate on Cu sulfide ore minerals

Buckley, Alan N.; Hope, Gregory Alan; Lee, Kenneth C.; Petrovic, Eddie A.; Woods, R.

doi:10.1016/j.mineng.2014.08.002

Cited by 45 publications

(19 citation statements)

References 24 publications

(34 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The difference between thionocarbamate and thiourea is that thiourea contains two N atoms in its structure, while thionocarbamate contains one N atom. These collectors precede xanthates and dithiophosphates due to their higher selectivity against pyrite and higher stability at low pH (Buckley et al, 2014). Thionocarbamate is equal to or better than xanthates in collecting power (O'Connor et al, 1990).…”

Section: Non-xanthate Collectorsmentioning

confidence: 99%

See 1 more Smart Citation

The depression of pyrite in selective flotation by different reagent systems – A Literature review

Peng

Lauten³

2016

Minerals Engineering

190

View full text Add to dashboard Cite

Section: Non-xanthate Collectorsmentioning

confidence: 99%

“…While for pyrite, physisorption was proposed (Fairthorne et al, 1997). Unlike xanthates, the adsorption of thionocabamate collectors on pyrite did not remove sulfatelike oxidation products from pyrite surface, which may account for the flotation selectivity against pyrite (Leppinen et al, 1988;Buckley et al, 2014).…”

Section: Non-xanthate Collectorsmentioning

confidence: 99%

The depression of pyrite in selective flotation by different reagent systems – A Literature review

Peng

Lauten³

2016

Minerals Engineering

190

View full text Add to dashboard Cite

“…Later, Woods and Hope [13] and Woods et al [14] provided evidence for chemisorption of thionocarbamate on Cu metal through the S on surface Cu atoms. Buckley et al [15] performed a detailed study of the interaction of IPETC with copper sulphides. These authors claim that merely 30% collector is chemisorbed on bornite, whereas 70% of the surface had been adsorbed by the protonated IPETC on bornite in acidic pH.…”

Section: Introductionmentioning

confidence: 99%

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

2019

View full text Add to dashboard Cite

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.

show abstract

“…Compared with IPETC, ADTP is not selective against galena; the problem is that the collectors are not selective enough and the mechanism of IPETC and mineral is not studied [10]. IPETC is a kind of non-ionizing collector of oily liquid, and slightly soluble in water; it is regarded as having different forms in different pH environments [11]. Nagarajt considered the molecular structure of IPETC to contain a C=S group in neutral and acidic environments, and a SH group in an alkaline environment.…”

Section: Introductionmentioning

confidence: 99%

Fundamental Flotation Behaviors of Chalcopyrite and Galena Using O-Isopropyl-N-Ethyl Thionocarbamate as a Collector

Sun

et al. 2018

Minerals

View full text Add to dashboard Cite

Copper and lead are two important and widely used metals in industry. Chalcopyrite (CuFeS 2 ) is associated with galena (PbS) in ore, and it has been a research hotspot in separating galena from chalcopyrite by flotation. In this study, the flotation behaviors of chalcopyrite and galena were studied through flotation tests, adsorption measurements, solution chemistry calculation, Fourier transform infrared spectroscopy (FTIR) and molecular dynamics (MD) simulations. The results show that the floatability of chalcopyrite is better than that of galena in the presence of O-isopropyl-N-ethyl thionocarbamate (IPETC), and the recovery difference between chalcopyrite and galena is about 20% when IPETC is 7 × 10 −4 mol/L at pH 9.5, while the floatability difference between the two minerals is significant. Competitive adsorption of OH − and IPETC on mineral surfaces leads to lower floatability of galena than that of chalcopyrite. IPETC is able to remove the hydration layer on mineral surfaces and then adsorb on active sites. The floatability of minerals is enhanced with the increase of their hydrophobicity. This study provides a reference to separate galena from chalcopyrite.

show abstract

Adsorption of O-isopropyl-N-ethyl thionocarbamate on Cu sulfide ore minerals

Cited by 45 publications

References 24 publications

The depression of pyrite in selective flotation by different reagent systems – A Literature review

The depression of pyrite in selective flotation by different reagent systems – A Literature review

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

Fundamental Flotation Behaviors of Chalcopyrite and Galena Using O-Isopropyl-N-Ethyl Thionocarbamate as a Collector

Contact Info

Product

Resources

About