Effects of grinding media on grinding products and flotation
The surface properties and the flotation behaviour of pyrite ground with different grinding media have been studied by means of SEM,XPS and flotation experiment.It's shown that there exist great … Expand. 5. Save. A study on the effect of active pyrite on flotation of porphyry copper ores.Web
Froth Flotation of Chalcopyrite/Pyrite Ore: A Critical Review
When grinding with chromium media, higher chalcopyrite and lower pyrite recoveries are produced than with steel media. This is attributed to the fact that steel is electrochemically active and increases the formation of …Web
Influence of grinding conditions on the pulp chemistry and …
They found that the effect of grinding media on pyrite flotation was dependent on pulp pH. Specifically, at pH 5.0, the 30% chrome steel grinding media produced the highest pyrite recovery while at pH 7.0, no appreciable difference in flotation recovery was observed between the three different grinding media.Web
Effects of particle size and ferric hydroxo complex produced by
In this study, two types of grinding media, ceramic balls (CB, >90% Al 2 O 3) and cast iron balls (CIB, >3.5% C), were used as grinding media for pyrite. The effects of particle size and the hydroxo complex of ferric produced by grinding with the CB and CIB media on the flotation kinetics of pyrite were investigated.Web
Minerals | Free Full-Text | Changing the Pulp Properties and
The pyrite surfaces adsorbed less butyl xanthate when cast iron balls were used as grinding media due to the presence of more hydrophilic hydroxyl iron. …Web
Effects of Grinding Media on Grinding Products and Flotation
This review highlights the influences of grinding media on pulp chemical properties (dissolved oxygen, pulp potential, pH, and ion concentration), particle size distribution, surface morphology and species, and crystal structure of grinding products, as well as flotation performance of sulfide ores. In addition, the effects of electrochemical ...Web
Effect of regrinding conditions on pyrite flotation in the presence of
In order to represent the pyrite flotation behaviour in the rougher stage at Telfer, 90 wt.% flotation recovery was achieved by increasing the reagent dosage and adding copper ions as the activator. Fig. 2 shows pyrite flotation recovery as a function of flotation time with stainless steel grinding media. In the absence of copper ions, pyrite …Web
A review of the effects of grinding media and chemical conditions …
According to the literature reviewed, the grinding conditions might activate or depress pyrite, depending on the complex interactions among ore mineralogy, grinding …Web
(PDF) Grinding media
The results show that when grinding with forged steel media, the new surfaces produced on pyrite particles during grinding are oxidised or react rapidly in the mill, resulting in low surface ...Web
The effect of grinding chemistry on cyanide leaching of gold in the
The interaction between grinding media and collector in pyrite flotation at neutral and slightly acidic pH. 2020, Minerals Engineering. Show abstract. Gold often coexists with pyrite as micron and submicron-inclusions and pyrite is therefore floated to maximize gold recovery in gold processing plants. In practice, different types of grinding ...Web
Frontiers | Effect of Grinding Media on Grinding …
Grinding media have significant influence on the flotation of chalcopyrite and pyrite. This effect is mainly related to the change in the surface …Web
Enhanced flotation of chalcopyrite particles by grinding with short
In this study, the effect of short cylinder and ball grinding media on the floatability of chalcopyrite was systematically investigated from the perspective of physical and chemical factors, i.e., particle properties and interface chemistry. The chalcopyrite particles ground by short cylinders had a better floatability, higher flotation rate ...Web
Professor Yongjun Peng
The interaction between grinding media and collector in pyrite flotation at neutral and slightly acidic pH. Mu, Yufan, Cheng, Yupu and Peng, Yongjun (2020). The interaction between grinding media and collector in pyrite flotation at neutral and slightly acidic pH. Minerals Engineering, 145 106063, 106063. doi: 10.1016/j.mineng.2019.106063Web
Insight into the effects of grinding media on the
The effects of grinding media (cast iron balls, steel balls containing 18% chromium, and steel balls containing 12% chromium) on the pulp properties and hydrophilicity of galena and pyrite were ...Web
Effects of grinding media on grinding products and flotation
The grinding tests were carried out in a vertical mill (JM-2, Changsha, China) at a constant rotational speed of 450 rpm. To better verify the effects of the grinding media on grinding products and chalcopyrite flotation behavior, the mill barrel was made of corundum with a volume of 200 mL, and the top of the stirring rod was covered with a …Web
Minerals | Special Issue : Recent Advances in Extractive …
The pyrite surfaces adsorbed less butyl xanthate when cast iron balls were used as grinding media due to the presence of more hydrophilic hydroxyl iron. Therefore, cast iron balls as grinding media are favorable for broadening the surface hydrophilic differences between galena and pyrite.Web
Selectively Depress Copper-Activated Pyrite in Copper
In this study, MBS was examined to depress the flotation of copper-activated pyrite at pH 8.0 in conjunction with grinding media. When forged steel was used as grinding media, a high dosage of MBS was required to depress pyrite. When HiCr steel media was used, pyrite could be depressed almost completely even with a lower …Web
Effects and Mechanisms of Grinding Media on the Flotation …
To verify the effects of grinding media on the flotation performance of actual scheelite ore, ... Ralston J. Control of grinding conditions in the flotation of chalcopyrite and its separation from pyrite. Int. J. Miner. Process. 2003, 69, 87–100. 10.1016/S0301-7516(02)00119-9.Web
Galvanic interaction between grinding media and arsenopyrite …
The interaction between grinding media and collector in pyrite flotation at neutral and slightly acidic pH. Yufan Mu Yupu Cheng Yongjun Peng. Materials Science. 2020; 20. Save. Effects of grinding environment on the flotation of Rosh Pinah complex Pb/Zn ore. Y. Wei R. Sandenbergh. Materials Science.Web
A review of the effects of grinding media and chemical conditions …
The grinding media, ore mineralogy, and process water chemistry is therefore expected to play an important part in flotation recovery. It should be noted that the flotation recovery of valuable minerals can still be manipulated by a range of other factors as well, as discussed below. ... Effect of grinding media on the activation of pyrite ...Web
Pyrite-pyrrhotite-grinding media contact and its effect on flotation
The electrochemical nature of mineral-grinding media interaction in the wet grinding of one and two sulfide mineral ores was investigated with regard to the flotation behaviors of the minerals. Two iron sulfides (pyrite and pyrrhotite) and mild steel were used to represent the sulfide minerals and the grinding media, respectively. Galvanic …Web
Surface chemistry of oxidised pyrite during grinding: ToF-SIMS …
Reactions on pyrite surfaces during grinding. The impact of grinding conditions, including the type of grinding media, dissolved oxygen in the pulp and pulp pH, on the surface chemistry of pyrite and its subsequent flotation behaviour have been studied intensively (Peng et al., 2003a, Huang and Grano, 2005, Rabieh et al., 2016).Web
Understanding the effect of grinding media on the adsorption …
Effect of grinding media on the activation of pyrite flotation. Miner. Eng., 23 (2010), pp. 600-605, 10.1016/j.mineng.2010.02.003. View PDF View article View in Scopus Google Scholar [18] Y. Peng, S. Grano, D. Fornasiero, J. Ralston. Control of grinding conditions in the flotation of chalcopyrite and its separation from pyrite.Web
An Investigation into the Effects of Grinding Media on Grinding
In this study, we investigated the effects of cast iron ball (CIB) and ceramic ball (CB) grinding media on the grinding products characteristics and flotation …Web
Surface Spectroscopy of Pyrite Obtained during Grinding and …
Keywords: infrared; pyrite; magnetite; grinding; goethite; siderite 1. Introduction The oxidation of pyrite during grinding with steel media is a relevant and constant subject of study [1], as it is considered a common impurity in deposits of base metal sulphide ores [2]. On the other hand, due to the fact of its mineralogical association withWeb
Galvanic interaction of grinding media with arsenopyrite and pyrite …
The pulp chemistry properties during the grinding of the gold-arsenopyrite or gold-pyrite synthetic ores with four different grinding media are given in Fig. 1. As seen in Fig. 1, the changes from the 30% chromium and ceramic to the forged steel grinding media resulted in a systematic reduction in the pulp potential.Web
| XPS spectra of chalcopyrite and pyrite: (A) Chalcopyrite (survey
Liao et al. [32] also showed that, although steel ball grinding is beneficial to the flotation of pyrite, nano-ceramic media grinding produces better selective flotation in chalcopyrite than steel ...Web
Galvanic coupling and its effect on origin potential flotation …
galvanic contact between galena (or sphalerite) and pyrite contributes to decreasing the content of zinc in lead con- centrate, and enhances remarkably the absorption of collector on the galena surface. During grinding, due to galvan- ... collector-water system and grinding media (steel ball)-water system, and galvanic coupling lie in these ...Web
(PDF) Effect of Grinding Media on Grinding-Flotation Behavior of
Grinding media have significant influence on the flotation of chalcopyrite and pyrite. This effect is mainly related to the change in the surface properties of chalcopyrite and pyrite. This paper ...Web
A review on electrochemical behavior of pyrite in the froth flotation
In addition, interactions between pyrite and collectors and interactions between pyrite and grinding media with emphasis on the electrochemical reactions were focused. There are some researches which investigate various interactions in the pyrite flotation, so this review is intended to provide further insights into the pyrite flotation …Web
