Tannins: the organic depressants alternative in selective flotation of sulfides

Sarquis, Pedro; Menéndez-Aguado, Juan M.; Mahamud, Manuel María; Dzioba, R.

doi:10.1016/j.jclepro.2014.08.025

Cited by 78 publications

(25 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Similar tests were carried out in the Hallimond tube for pure chalcopyrite. The recovery of pyrite and chalcopyrite with and without the addition of tannin is shown in Figure 6 [21]. Figure 6 clearly illustrates that the use of tannins have a marked depression effect on pyrite while having little influence on chalcopyrite recovery.…”

Section: Sulfides: Copper-lead-zinc-nickel Oresmentioning

confidence: 96%

“…With increasing tannin addition, the pyrite was drastically reduced in the concentrate with the best results at 600 g/t. These tests concluded that the addition of tannins in the system significantly increased the grade of the copper while only sacrificing 1 percent of recovery of copper due to the depression of pyrite [21]. Bulatovic and Salter's work focuses on comparing a newly invented depressant mixture to the traditional depressant system on several polymetallic sulfides.…”

Section: Sulfides: Copper-lead-zinc-nickel Oresmentioning

confidence: 99%

See 1 more Smart Citation

Tannins in Mineral Processing and Extractive Metallurgy

Rutledge

Anderson

2015

Metals

View full text Add to dashboard Cite

Abstract:This study provides an up to date review of tannins, specifically quebracho, in mineral processing and metallurgical processes. Quebracho is a highly useful reagent in many flotation applications, acting as both a depressant and a dispersant. Three different types of quebracho are mentioned in this study; quebracho "S" or Tupasol ATO, quebracho "O" or Tupafin ATO, and quebracho "A" or Silvafloc. It should be noted that literature often refers simply to "quebracho" without distinguishing a specific type. Quebracho is most commonly used in industry as a method to separate fluorite from calcite, which is traditionally quite challenging as both minerals share a common ion-calcium. Other applications for quebracho in flotation with calcite minerals as the main gangue source include barite and scheelite. In sulfide systems, quebracho is a key reagent in differential flotation of copper, lead, zinc circuits. The use of quebracho in the precipitation of germanium from zinc ores and for the recovery of ultrafine gold is also detailed in this work. This analysis explores the wide range of uses and methodology of quebracho in the extractive metallurgy field and expands on previous research by Iskra and Kitchener at Imperial College entitled, "Quebracho in Mineral Processing".

show abstract

Section: Sulfides: Copper-lead-zinc-nickel Oresmentioning

confidence: 96%

Section: Sulfides: Copper-lead-zinc-nickel Oresmentioning

confidence: 99%

Tannins in Mineral Processing and Extractive Metallurgy

Rutledge

Anderson

2015

Metals

View full text Add to dashboard Cite

show abstract

“…Environmentally-friendly reagents have attracted more attention and become a current tendency in froth flotation [11]. The effective recovery with little reagent dosages can reduce the impact of flotation reagents on environments, such as water quality.…”

Section: Introductionmentioning

confidence: 99%

Flotability Improvement of Ilmenite Using Attrition-Scrubbing as a Pretreatment Method

et al. 2017

View full text Add to dashboard Cite

Flotation technology of the recovery and utilization of ilmenite from tailings of iron beneficiated in Panzhihua was investigated based on mineralogical study. The results of mineralogical study show that the main occurrence of the valuable mineral are liberated grains of ilmenite. Experimental results of flotation conditions show that attrition-scrubbing raw ores exhibit good flotability with higher recoveries and a slight decrease in grade compared to ores without attrition-scrubbing. Further, open-circuit experiments also prove the superiority of attrition-scrubbing raw ores. The results of closed-circuit experiments show that qualified ilmenite concentrate can be obtained and the yield, grade, and recovery are 22.26%, 47.06%, and 60.73%, respectively. Theoretical study and analysis show that there are two contributions to superior flotability for attrition-scrubbing samples. The first is that the attrition-scrubbing samples can uncover more ferrous ions on the newly-produced fresh ilmenite surface, resulting in the increase in active sites. The other is that in the process of attrition-scrubbing, the transformation of ferrous ions to ferric ions can be promoted.

show abstract

“…In this regard, the use of inorganic depressants such as cyanides, sulphites, or ferrocyanides has raised concerns on environmental grounds. Therefore, organic polymers have been studied, in view of their natural, biodegradability and non-toxicicity (Lopez-Valdivieso et al, 2004;Bicak et al, 2007;Liu et al, 2009;Bulut et al, 2011;Koleini, Abdollahy, and Soltani, 2012;Sarquís et al, 2014;Mu, Peng, and Lauten, 2015). However, there is currently a lack of knowledge about the interaction between these additives and solid surfaces in highly saline environments.…”

mentioning

confidence: 99%

“…Therefore, finding new pyrite depressants would confer an advantage. A recommendable option is the use of organic reagents (López-Valdivieso et al, 2004;Bicak et al, 2007;Sarquís et al, 2014). …”

mentioning

confidence: 99%