Thus, sodium carbonate is commonly used in flotation as a pH modifier [57]. Moreover, its addition prior to sodium silicate produced positive synergistic effects on gangue mineral depression [ 5, 21, 23, 26, 58 ].
While depression of calcite flotation by the dissolved species is found to be governed by depletion of oleate by bulk precipitation, the depression of apatite flotation is caused …
In this study, the selective depression of arsenopyrite in pyrite flotation with in-situ generated nanoparticles was studied. Scanning electron microscope and energy dispersive X-ray spectroscopy (SEM/EDS) detection, solution chemistry analysis, fourier transform infrared spectroscopy (FTIR), adsorption tests and contact angle …
The flotation experiments and contact angle measurements indicated that the selective depression effect of sodium carbonate on the calcite mineral is more than that of calcium chloride. As evidenced by zeta potential and FT-IR analysis, sodium carbonate decreases the negative charges on the surface of calcite mineral and …
The results of this study showed that sodium silicate can replace sodium carbonate and inhibit talc flotation in combination with zinc sulfate; the associated depression mechanism was also ...
Reverse flotation technology is one of the most efficient ways to improve the quality and reduce impurity of iron concentrate. Mineral processors dealing with hematite face a challenge that the flotation results of reverse flotation of hematite are poor in presence of siderite using fatty acid as collector, starch as depressant of iron minerals …
Reverse flotation of carbonate minerals from refractory gold-bearing sulfide ores requires the flotation of the carbonate minerals (calcite, dolomite, siderite, etc.) …
DOI: 10.1016/s1003-6326(23)66203-x Corpus ID: 259467855; Depression mechanism of ZnSO4 and Na2CO3 on talc flotation @article{Li2023DepressionMO, title={Depression mechanism of ZnSO4 and Na2CO3 on talc flotation}, author={Jia-lei Li and Yin-yu Ma and Guang-li Li and Zhi-cheng Liu and Shuai Ning and Bin Pei and Zhao-you Lang and Rui …
The flotation experiments and contact angle measurements indicated that the selective depression effect of sodium carbonate on the calcite mineral is more than that of calcium chloride.
Flotation tests were conducted on a laboratory XFG flotation machine (Jilin Exploration Machinery Plant) using a 30-mL flotation cell with deionized water. Fig. 2 illustrates the flotation procedure of single mineral and binary mixed minerals (mass ratio of magnesite and calcite was 9:1). First, 2 grams of minerals sample was mixed with 20 mL ...
The first flotation separation for the rejection of magnesite was reported by Doerner and Dwigh (1930s) [].Flotation of Mg carbonates is typically carried out by using fatty acids, since these collectors give insoluble complexes with all divalent cations [].Determination of the appropriate depressing reagents for sinking valuable minerals in …
Herein, the depression mechanism of pullulan in the flotation separation of chalcopyrite from talc was investigated via flotation tests and characterisation techniques, such as Fourier transform ...
The result in Fig. 2 (b) shows that both sodium bicarbonate and ammonium carbonate increased the depression effect of lizardite on pyrite when the concentration is 0.6 ... These results illustrate that the concentration of sodium bicarbonate and ammonium carbonate used to restore pyrite flotation recovery is larger than that of sodium …
As a result, reverse flotation of carbonate gangue and depression of phosphate has been considered by several researchers (page 789 Abdel-Khalek, 2000, El-Shall et al., 1996, Elgillani and Abouzeid, 1993, Anazia and Hanna, 1987). Several reagents are used in phosphate flotation as collectors, depressants, and auxiliary reagents.
Flowsheet C: Two-stage acidic reverse carbonate gangue flotation comprising a rougher and scavenger stage, to float the carbonate gangue minerals and recover a bulk Cu-Co concentrate. ... (Table 4), may explain the depression effect of the phosphoric acid on the flotation of the Cu-Co oxides minerals compared to dolomite …
The depression mechanism of a combination of ZnSO4 and Na2CO3 on talc during chalcopyrite and molybdenite flotation was investigated in-depth using flotation tests, solution speciation ...
These depressants partially affect Mg carbonate flotation by changing pH value. pH, collector, and depressant concentrations are the main parameters for a selective Mg carbonate separation. ... indicating that Mg carbonates are considerably depressed by appropriate depressants while apatite remains for froth flotation [7]. Bio Depression In ...
DOI: 10.1016/j.mineng.2020.106710 Corpus ID: 229386822; Novel approach for processing complex carbonate-rich copper-cobalt mixed ores via reverse flotation @article{Dehaine2020NovelAF, title={Novel approach for processing complex carbonate-rich copper-cobalt mixed ores via reverse flotation}, author={Quentin …
Theoretically, the flotation separation of carbonate minerals can be achieved by the direct flotation of magnesite with a depression in calcium-bearing carbonates …
It was found that sodium hydroxide showed an activation effect whereas sodium carbonate showed a depression effect on the flotation of spodumene. This difference in flotation performance was consistent with the measured contact angles of spodumene treated in sodium hydroxide and sodium carbonate solutions, respectively.
This study presents a compilation of various parameters, including zeta potential, pH, particle size, reagents (collectors, depressant, and modifiers), and bio …
The depression performance and mechanism of the combined depressant containing potassium ferricyanide (K3[Fe(CN)6]), zinc sulfate (ZnSO4), and sodium carbonate (Na2CO3) with potassium isobutyl xanthate (PPBX) as the collector in a mixed Pb–Zn sulfide flotation system were investigated using microflotation experiments, …
Froth flotation is a common mineral processing technique that is used to remove low economic gangue minerals, such as pyrite, from ore. The main hydrophilization mechanism on the pyrite surface is explained by the formation of hydrophilic iron (Fe) hydroxide and its complexation with calcium (Ca) and magnesium (Mg) ions; however, …
While it is clear that flotation or depression depends upon the balance of hydrophobic and hydrophilic species on the surface, the finding above indicate that several ionic equilibria can modify pyrite surfaces only by a change in pH (He et al., 2005, López Valdivieso et al., 2005). In real ore systems, many ionic species can modify the ...
Starch was modified by introducing amino radicals to solve the problem of poor selectivity during flotation. Changes in the flocculation and depression properties of starch after introducing amino ...
The effects of carbonate minerals (dolomite and siderite) on the flotation of hematite using sodium oleate as a collector were investigated through flotation tests, supplemented by dissolution ...
Therefore, understanding the types of pyrite present, their abundance, and how they affect the flotation behavior of the ore is critical for an efficient depression and …
DOI: 10.1016/J.APSUSC.2019.02.224 Corpus ID: 108249613; AFM and DFT study of depression of hematite in oleate-starch-hematite flotation system @article{Li2019AFMAD, title={AFM and DFT study of depression of hematite in oleate-starch-hematite flotation system}, author={Lixia Li and Chen Zhang and Zhi-tao Yuan and Xinyang Xu and …
Studies of ore flotation in some plants have found that the degree of flotation depression in highly alkaline lime system increases with increasing iron content of iron-bearing sphalerite (Yue et al., 2008). That is, with increasing iron content, the ability of the traditional flotation process to separate iron-bearing sphalerite and pyrite ...
Phosphate ore is an important strategic mineral resource. The efficient utilization of phosphate resources faces challenges such as low grade of raw ore and difficulty in discharging gangue minerals. One of the key problems to be solved urgently in the reverse flotation of phosphate ore is the effective depression of apatite. However, …
