A potential application of collectorless flotation in a copper/gold
Background on Telfer operation. The Telfer ore processing plant operates two parallel trains. This paper focuses on Train 1 which processes a blend of the underground mine chalcopyrite ore and the open pit mine chalcocite ore. ... It was found that the application of Na 2 S improved pyrite flotation to the same extent as the application of …Web
اقرأ أكثرAdvances in depressants used for pyrite flotation separation
Highly efficient pyrite depressants can be selectively adsorbed on the surface of pyrite to improve its hydrophilicity, thereby increasing the flotation separation …Web
اقرأ أكثرCollectorless flotation of oxidized pyrite
Recently, improved flotation of carbonaceous auriferous pyrite ores from the Carlin deposits has been maintained by the use of a CO 2 /N 2 gas mixture for conditioning and flotation [37]. Fundamental issues associated with CO 2 /N 2 flotation of pyrite are reported in a separate paper by Vaziri Hassas et al., 2018 [38].Web
اقرأ أكثرEvaluate the Depression of High-Concentration Pyrite in Copper
Figure 2b represents chalcopyrite flotation against pyrite. As the pyrite feed grade increased from 5% to 25%, chalcopyrite flotation against pyrite was improved when 30 wt% Cr steel was used as the grinding media, but this improvement was not enough to maintain a high Cu concentrate grade due to a reduced Cu recovery and more pyrite …Web
اقرأ أكثرfroth flotation process: Topics by Science.gov
The flotation-purified pyrite concentrates were formulated into catholytes; their electrochemical performance was evaluated in both single cells and 5-cell batteries for comparison to data generated under the same discharge conditions for catholytes formulated with HF/HCI purified pyrite. 46 CFR 179.240 - flotation material.Web
اقرأ أكثرSelective depression of arsenopyrite with in situ generated
The separation of arsenopyrite from pyrite has always been a complication due to the lack of green and high-efficiency flotation reagents. In this study, a macromolecular organic depressant soluble starch (SS) was introduced, and its application and depression mechanism in the selective flotation separation of arsenopyrite and …Web
اقرأ أكثرThe effect of clay minerals on the process of flotation of copper …
Then, the flotation results of mixture covellite-pyrite show that selective flotation is feasible with IPETC at alkaline pH with a low dosage displaying recoveries of 97 % covellite and 53 % ...Web
اقرأ أكثرGalena (ga), sphalerite (sf), pyrite (py).
This paper reports the results of flotation tests conducted with a copper-lead-zinc sulphide ore. The major sulphide minerals in the ore are chalcopyrite, galena, sphalerite, marmatite and pyrite ...Web
اقرأ أكثرLime use and functionality in sulphide mineral flotation: A review
Flotation results confirmed that pulp aeration was able to selectively depress pyrrhotite and pyrite flotation under ML8 system, thus 3000 g/t lime was cancelled during copper flotation stage, and ...Web
اقرأ أكثرA critical review on natural surfactants and their potential for
As discussed in chapter 3, the froth flotation process is an acceptable operation for mineral processing. However, most chemical reagents used in this process are toxic to human health such, as sodium cyanides, sulphites, and potassium dichromates (Lin et al. 2017; Khoso et al. 2019b). In this regard, the implementation of microbial …Web
اقرأ أكثرThe role of sodium metabisulphite in depressing pyrite in …
The previous study revealed that pyrite recovery was significantly elevated when seawater was used in flotation to replace fresh water, making the flotation more difficult to separate chalcopyrite from pyrite, and the enhanced galvanic interaction between these two minerals in seawater was the main contributing factor (Mu and Peng, 2019).Web
اقرأ أكثرEffect of pyrite textures and composition on flotation performance: …
In new prospects and current mining operations, pyrite processing represents a significant problem in achieving production goals (Grano et al., 1990, ... understanding why pyrite's flotation performance varies within orebodies and the features affecting its floatability is critical for an efficient depression and possible reclamation of pyrite.Web
اقرأ أكثرSurface chemistry of oxidised pyrite during grinding
During the crushing and grinding operations prior to flotation, new fresh surfaces are created which are naturally hydrophobic. These newly exposed fresh surfaces should overcome the detrimental effect of pre-oxidation to some extent. However, the flotation recovery of stockpiled pyrite ores is still unsatisfactory in practice, e.g., the …Web
اقرأ أكثرSelective flotation of chalcopyrite from pyrite via seawater …
The flotation separation of chalcopyrite from pyrite has attracted increasing attention due to the consumption of vast water resources and depressants. This study …Web
اقرأ أكثرPyrite Flotation Separation and Encapsulation: A Synchronized
Pyrite flotation separation and encapsulation in tailings dams is proposed as a viable way to chemically stabilize tailings. Characterization of potential acid mine …Web
اقرأ أكثرSilver Gold Recovery Flotation Process
Should it be possible to obtain a good recovery by flotation in a concentrate carrying most of the pyrite or other sulphide minerals, it may prove more economical to adopt this method, regrinding only the comparatively small bulk of concentrate previous to the cyaniding operation. Flotation may also prove to be the more economical process …Web
اقرأ أكثرEffect of pyrite textures and composition on flotation performance: …
Effect of pyrite textures and composition on flotation performance: A review. Pyrite can have variable textures and chemical composition. Presence of complex …Web
اقرأ أكثرA scale-up approach for industrial flotation cells based on particle
This work aims to establish the quantitative relationship between the surface oxidation state of pyrite and flotation performance. In this paper, an efficient method was proposed to prepare pyrite with different oxidation degrees. ... Effect of residual reagents on chalcopyrite losses at Mount Isa Mines copper Operation: Part II - evaluation of ...Web
اقرأ أكثرPolysaccharides-based pyrite depressants for green flotation …
In froth flotation separation, the first use of polysaccharides dates back to 1928 and has continued up to now [34].Although several polysaccharides have been recently synthesized and extensively used for pyrite depression in different mineral processing plants, no comprehensive review article has universally explored their …Web
اقرأ أكثر(PDF) Pyrite Flotation: A Review
Main interest in the processing of complex sulfide ores has focused on the rejection of pyrite and selectivity problem that arises …Web
اقرأ أكثر3D Characterization of Auriferous Pyrite Flotation Samples for
Coeur Alaska's Kensington operation is located in Southeast Alaska near Juneau. It is an underground gold operation. ... This study validates the efficiency of auriferous pyrite flotation at the Kensington concentrator. Due to the limited spatial resolution of 10× scan at the voxel size of 1.85 μm, a machine learning method …Web
اقرأ أكثرSelective Separation of Chalcopyrite from Pyrite Using Sodium …
In this research, the eco-friendly organic depressant sodium humate (SH) was chosen as a depressant to separate chalcopyrite from pyrite by flotation. The …Web
اقرأ أكثرPyrite Flotation Separation and Encapsulation: A Synchronized
By separating the pyrite from the tailings by flotation during the final years of operation of a plant, two fundamental aspects could be achieved: (1) a neutral tailings can be produced and used as a cover material for the dam containment wall, and (2) encapsulation of the pyrite concentrate with 2–3 m of fine material with little capacity to ...Web
اقرأ أكثرFlotation of Copper Ores with High Cu/Zn Ratio: Effects of Pyrite …
In general, Cu-Zn sulfide ores consisting of a Cu/Zn ratio of 0.4–1:1 (w / w) [16,17,18,19,20] are processed by a two-step flotation: (i) the selective flotation of Cu minerals while depressing sphalerite using zinc sulfate (ZnSO 4)—a sphalerite depressant—and other gangue minerals such as pyrite (FeS 2) and silicate minerals under ...Web
اقرأ أكثرSoluble Metal Xanthates and their Effect on Differential Flotation
Pyrite Flotation.—Copper sulphate in neutral or slightly acid circuit forces the formation of a copper, or possibly a double copper-iron, xanthate with the iron mineral that had been coated or deadened in the first operation. Result: flotation of pyrite. Resume: (a) Iron xanthate; made possible, through a probable combination with copper ...Web
اقرأ أكثرEffects of Fine Minerals on Pulp Rheology and the Flotation of
In this study, the effects of four fine minerals, which were fine diaspore (FDIA), kaolinite, illite, and pyrophyllite (D50 is about 4.55 μm, D80 is about 10.78 μm), on the pulp rheology of the diaspore and pyrite mixed ores (D50 is about 120.53 μm, D80 is about 187.36 μm) and the recovery of pyrite were investigated through flotation tests, pulp …Web
اقرأ أكثرApplication of hydroxyethylidene diphosphonic acid as a
The aforementioned findings show that the negative impact of serpentine on pyrite flotation is caused by fine-grained serpentine sticking to and covering the surface of pyrite (Yang et al ... with the inhibitor introduced before the "Cleaner flotation" operation. Calcium lignosulfonate (CA) is a common inhibitor in the separation of ...Web
اقرأ أكثرMinerals | Free Full-Text | Effects of Pyrite Texture on …
Pyrite particles, having framboidal/altered texture, are known to significantly affect pulp chemistry and adversely affect flotation performance. Therefore, the main objectives of this study were to …Web
اقرأ أكثرFroth Flotation of Chalcopyrite/Pyrite Ore: A Critical Review
Abstract. In the present work an intense bibliographic search is developed, with updated information on the microscopic fundamentals that govern the behavior of flotation operations of ...Web
اقرأ أكثرFlotation data for the design of process plants Part 2
sequential flotation circuit versus Cadia s simple copper gold flotation circuit. The common theme is that pyrite forms the principal floatable concentrate diluent. ... plant design was based on extensive benchscale test work (including locked cycle tests) on drill core and many months of operation of a 30 t h2 1 pilot plant using the ...Web
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