This study revealed the underpinning mechanisms in chalcopyrite flotation with high sodium bentonite content when using saline water containing divale
Coarse chalcopyrite recovery in a universal froth flotation machine. Graeme J. Jameson, Cagri Emer. ABSTRACT. A new froth flotation machine has been developed, known as the NovaCell, which can recover mineral particles over a wide particle size range, from the lower limit of flotation, to an upper limit which depends on the liberation ...
Flotation of chalcopyrite having four different size distributions showed that the particle size effects on flotation yield was very important. Oil agglomeration methods are effective for recovering fine chalcopyrite. Oil agglomeration of fine chalcopyrite 200gt KAX and 15 Lt emulsified kerosene improved the flotation yield by
The selective flotation separation of chalcopyrite and pyrite can be achieved in neutral or alkaline media with a low concentration of it. A2 As the high-efficiency collecting and foaming agent for copper and gold, A2 has a high selection rate and good separation effect of copper-gold and sulfur. J622 The collector of Cu-Ni ores. BJ-306
Fig. 1. Growth of minerals in the pyritic copper ore chalcopyrite kp and sphalerite sf phases locked with cataclastic pyrite pi structure 2.2. Method Experimental studies have been carried out with Denver flotation machines using 40 g of -100 m pure pyrite in one dm3 cell for pure pyrite study and 1 kg of
Mar 19, 2017 The separation of copper-bearing from zinc sulphides is effected by two-stage selective flotation, the zinc minerals being depressed and the copper minerals brought up in the first stage with reagents similar to those required in the lead flotation section of a lead-zinc plant the zinc sulphides are floated in the second stage in the ordinary way. The ores treated by this process are mainly those containing chalcopyrite
Such chemical conditioning of mineral surfaces is widely used in froth flotation see Chapter 12 sphalerite, for example, can be made to respond in a similar way to chalcopyrite, by allowing the ...
Flotation Machines Mineral Processing Machine . Flotation is the most widely used beneficiation method for fine materials and almost all ores can be separated by flotation another important application is to reduce ash in fine coal and to remove fine pyrite from coal the flotation machine is mechanical equipment for realizing the froth ...
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Mar 18, 2021 Europe PMC is an archive of life sciences journal literature. Separation effects of sodium polyacrylate PAAS and gum Arabic GA on flotation of chalcopyrite and magnesium silicate minerals using potassium butyl xanthate PBX as collector were investigated by micro-flotation experiments, zeta potential, Infrared spectral IR, SEM-EDS, XPS analysis and copper sulphide ore beneficiation test.
Apr 28, 2020 In order to eliminate the adverse effect of chalcopyrite on the flotation performance of SA, the effect of reagent scheme on the flotation results of chalcopyritemolybdenite mixed systems was investigated. As shown in Table 1, a concentrate with Mo grade of 53.43 and recovery of 76.90 was acquired when kerosene was added before SA. This indicated that the addition of kerosene prior to SA could eliminate the adverse effect of chalcopyrite
Sequential oatation of chalcopyritesphalerite from Tak-nar Iran massive sulphide ore with 3.5 Zn and 1.26 ... Floatation Tests A Denver oatation machine, a 1.6 lit oatation cell ...
2.2 Flotation tests A Denver floatation machine, a 1.6 lit flotation cell and tap water were used for the batch floatation tests. Chalcopyrite and sphalerite flotation experiments were carried out at about 30 and 25.5 solids respectively. The impeller speed was
chalcopyrite into bulk concentrate is higher than that at reagent-only treatment. It can be explained by increased of flotation rate for slow fraction as defined by Kelsall model. The slow fraction flotation rate increase multiplied by 6 vs. ultrasound treatment. Additional effect of the
The results showed that the optimal conditions for chalcopyrite flotation were pH of 11.5, Aero 407 as a collector with concentration of 25 mgdm , Dowfroth 250 DF250 as a frother with ...
chalcopyrite-bornite and chalcopyrite-pyrite underwent flotation testing, with back-up quantitative mineralogy to confirm the validity of the conceptual flow sheet. Detailed chemical assays were done on the copper concentrates. Copper-gold breccia flow sheet development GampT this was an extension of the flow sheet confirmation and included
The chalcopyrite located on the surface of the deposit is oxidized for a long time, with low hardness, easy to be pulverized, and the floatability is also deteriorated. The most commonly used collector for flotation chalcopyrite is xanthate, chalcopyrite is easy emerged in a wide pH range 3 to 12.
Bench-scale studies were made on a reductive hydrometallurgical procedure to convert chalcopyrite flotation concentrate to copper metal or a readily leachable sulfide. Reductive conversion of chalcopyrite and dissolution of iron and sulfur were accomplished in hydrochloric or sulfuric acid solution by the addition of metallic copper, iron, or lead.
The full priority flotation process is suitable for ores with simple composition, few useful minerals to be recovered, large differences in flotation between useful minerals, or ores whose co-occurring minerals are well suppressed and have no significant effect on the flotation of chalcopyrite. The full priority flotation process is simple, easy to implement, and the coarse concentrate does not need to be re-grinded.
Sea water has been used in flotation plants, showing a promising way to save fresh water usage. Previous studies indicated that divalent salts in sea water played negative roles in chalcopyrite flotation, but not much work have been conducted to understand the eliminating mechanisms. This study systematically investigated the effects of divalent cations of Ca2 and Mg2 on natural flotability ...
Carboxymethylcellulose CMC is a nontoxic and biodegradable polysaccharide, which can potentially replace the frequently used hazardous depressants in CuMo separation. However, a lack of understanding of the interaction mechanism between the CMC and the minerals has hindered its application. In the present study, it is found that 50 mgampmiddotLampminus1 CMC can inhibit chalcopyrite
The rejection of pyrrhotite and pyrite has become a long-standing problem in the copper ore industry. This paper describes the first successful depression and adsorption mechanism of a novel and non-hazardous reagent, polyglutamic acid PGA, on pyrrhotite in the selective flotation of chalcopyrite with xanthate as the collector, making use of various laboratory-scale measurement techniques.
The flotation results showed that sodium alginate could simultaneously depress the flotation of chlorite and serpentine effectively, but seldom influenced the floatability of chalcopyrite at pH 9. In the ternary mixture flotation, a concentrate with a Cu grade of 31 could be achieved at Cu recovery of 90.
Figure 5 shows the chalcopyrite recovery-time curves around the scavenger bank Figure 4. The concentrate stream shows a very fast flotation response in which 84 is recovered in the first 2 minutes of flotation. Meanwhile, the chalcopyrite response in the tailings is slow, may be due to the coarse particles or poor liberation. 0 10 20 30 40 ...