Flotation Fluorite Depressing Po

Solution Chemistry Study of Salt-type Mineral Flotation ...

Mar 15, 2003· Interactions of salt-type minerals with common inorganic flotation depressants were investigated through solution chemistry calculations. From the constructed conditional solubility product limits and the actual solubility product lines of calcium silicate and phosphate in fluorite, calcite, and apatite single-mineral systems, the critical precipitation pH or concentration of silicate and ...

Testing of New Collectors for Concentration of Fluorite by ...

In this study, two new collectors for fluorite flotation DP-OMC-1033 (DP-I) and DP-OMC-1234 (DP-II) were tested and compared with oleic acid (OA), sodium oleate (SO) and potassium oleate (PO). According to fluorite grade and fluorite metallurgical recovery, the effect of each collector was determined, both in mechanical and pneumatic cell flotation.

(PDF) Reverse Flotation Separation of Fluorite from ...

Fluorite (CaF2), as an important strategic mineral source, is usually separated from calcite by the common froth flotation method, but this separation is still not selective enough.

Beneficiation of Haematite from Fluorspar Tailings by ...

Reverse cationic flotation batch tests were conducted using 1kg of fluorspar tailings in 2.5l Denver D12 flotation cell at pulp density of 40% solids, impeller speed of 1000rpm and air flowrate of 60%. Before flotation, the pulp was first conditioned with starch for 4min and then conditioned with collector for 4min.

Mechanism of the activating and depressing effects of ...

1. Study of the flotabilities of fluorite, topaz, beryl, albite, and quartz by sodium oleate in the presence of sodium fluosilicate reveals the feasibility of selective flotation of fluorite and topaz from beryl, albite, and quartz by means of sodium fluosilicate. 2. The authors have studied attachment of the collector to mineral surfaces under these flotation conditions, determined the ...

US3893915A - Fluorspar ore flotation - Google Patents

US3893915A US369892A US36989273A US3893915A US 3893915 A US3893915 A US 3893915A US 369892 A US369892 A US 369892A US 36989273 A US36989273 A US 36989273A US 3893915 A US3893915 A US 3893915A Authority US United States Prior art keywords fluorite flotation ton pulp alkali metal Prior art date Legal status (The legal status is an assumption and is not a …

Improvement Effect of FeSO4·7H2O on Flotation Separation ...

The selective depression mechanism of FeSO4·7H2O was investigated in detail. X-ray photoelectron spectroscopy indicated that the difference in the number of surface active sites was the mechanism for improved differential flotation of scheelite from fluorite. The improved depression of fluorite was attributed to both ferrous and sulphate ions.

Depressing effect of phenoxyl acetic acids on flotation of ...

Phenoxyl acetic acids were applied to determine their depressing effect on minerals containing Ca 2+ /Mg 2+ gangues. Calcite, mixture of calcite and fluorite, and nickel ore were used in the flotation. And the depression mechanism was studied by the determination of contact angle, zeta potential, adsorptive capacity of collector, and IR ...

Effect and mechanism of Cu(II) on flotation separation of ...

May 01, 2020· Flotation results indicated that both cassiterite and fluorite had good floatability with SPA, and Cu(II) exhibited strong and selective inhibition effect on fluorite. For the artificial mixture which contained 47.86% SnO 2, a concentrate with a grade of 92.3% SnO 2 and a recovery of 85.6% was obtained at pH 4.0 with 100 mg/L SPA and 5 × 10 ...

Improvement Effect of FeSO4·7H2O on Flotation Separation ...

Improvement Effect of FeSO4·7H2O on Flotation Separation of Scheelite from Fluorite Yuan Hu,† Yuqing Huang,‡ Rongdong Deng,*,‡,§ Lin Ma,‡ and Wanzhong Yin‡,§ †College of Chemical Engineering and ‡School of Zijin Mining, Fuzhou University, Fuzhou 350108, China §Fuzhou University-Zijin Mining Group Joint Research Center for Comprehensive Utilization of Mineral Resources, Fuzhou

Effect of modified starch on separation of fluorite from ...

maximum recovery of fluorite (92.35%) was reached at a pH of 8, while that of barite (91.94%) occurred at a pH of 9. As observed, fluorite showed a similar flotation response to barite in the pH range of 5- 13. The flotation response of fluorite and barite as a function of sodium oleate dosage is plotted in Fig. 3.

Selective Separation of Fluorite, Barite and Calcite with ...

These two depressants allowed selective separation of the three minerals through sequential flotation. The flotation of mixed minerals showed that 94% of the calcite was successfully depressed by the valonea extract, and 95% recovery of the fluorite was achieved in the subsequent flotation with sodium fluosilicate depressing barite.

PROCESS FOR THE FLOTATION OF FLUORITE - MONTECATINI …

Sodium fluoride as activator of the fluorite, in quantities of from 300 to 800 g./t. of solids (the sodium fluorite may be totally or partially replaced by the polyethyleneoxy ester). A tannin, such as quebrache, for depressing the calcite in the successive flotation runs of the concentrate, in quantities of from 100 to 200 g./t. of solids.

Frontiers | The Challenge of Tungsten Skarn Processing by ...

Apr 16, 2020· Phosphate derivatives such as sodium hexametaphosphate [(NaPO 3) 6], sodium phosphate (Na 3 PO 4), sodium pyrophosphate (Na 4 P 2 O 7), and 1-hydroxyethylidene-1,1-diphosphonic acid (HEDP) (Wang et al., 2018b) are also widely used inorganic depressants for scheelite flotation from calcite and fluorite (Yongxin and Changgen, 1983; Bel'kova et al ...

Selective Flotation of Barite and Associated Minerals: A ...

of flotation were applied to barite and fluorite-barite ores. Definitive choice of optimal flotation requirements focused on Petronate L (1000 g/t ; pH 6.5) for barite flotation and on Flotbel R171A (100 g/t ; pH 9) for fluorite, combined with potassium dichromate as depressing agent for quartz and barite.

Minerals Engineering Conferences - Flotation '19

Orfom D8 depression of chalcopyrite during trial runs of Cu-Mo bulk concentrates S. Timbillah, R. LaDouceur, D. Laney, A. Das, and C. A. Young (Montana Technological University, USA) Sulphidisation and flotation of oxidised copper sulphides T. Moimane, Y. Huai and Y. Peng (The University of Queensland, Australia)

Improving the finely disseminated carbonate-fluorite ore ...

Mar 02, 2013· The article presents experimental research into intensification of fine-disseminated carbonate-fluorite ore flotation by adding FLOTOL-7,9 agent. It is shown that the optimal agent modes allow the yield of the saleable fluorite product of above 90% CaF2 grade at higher than 60% fluorite …

Selective flotation of fluorite from barite using ...

Apr 01, 2019· The single mineral flotation results show that it may be possible to separate fluorite from barite with TSP in the presence of NaOl. Therefore, flotation tests of mixed fluorite and barite (the mass ratio is 4:1) were conducted at pH 8.5 using different dosages of TSP and the best results achieved were shown in Table 1.It can be seen from Table 1 that a concentrate with a CaF 2 grade of 92.89% ...

Enrichment of Molybdenum and Fluorite by Flotation of ...

anionic collector alone. Also, fluorite flotation could be improved by using effective depressants when fatty acid is used as collector. For example, acidized sodium silicate was reported to depress calcite strongly in preference of fluorite at ambient temperature, leading the fluorite flotation to be achieved at a lower temperature [4].

Flotation Research of a Fluorite Ore | Scientific.Net

Separating fluorite from quartz and calcite by forth flotation can be both in weak-acidized (pH 6.0) condition and weak alkali (pH 9.0) condition. The experiment results have shown that ZnSO4 can decrease the depression that water glass works on the fluorite, and acidized water glass has a selective inhibition on the silicate minerals. The close flowsheet protocolled in the experiment can ...

Testing of New Collectors for Concentration of Fluorite by ...

In this study, two new collectors for fluorite flotation DP-OMC-1033 (DP-I) and DP-OMC-1234 (DP-II) were tested and compared with oleic acid (OA), sodium oleate (SO) and potassium oleate (PO).

Application of NSOH in fluorite ore flotation and its ...

The flotation of mixed minerals showed that 94% of the calcite was successfully depressed by the valonea extract, and 95% recovery of the fluorite was achieved in the subsequent flotation with ...

The utilization of citric acid as a depressant for the ...

Sep 01, 2020· The flotation recovery of fluorite decreased significantly, and the value dropped to approximately 5% at pH ~ 8, indicating that CA can be used as a depressant for fluorite in barite flotation at pH 8–11. Fig. 3 reveals the effects of CA on the flotation of fluorite and barite in the presence of 1.5 × 10 −4 mol/L NaOl. The flotation ...

Flotation Separation of Scheelite from Fluorite Using ...

The flotation recovery of scheelite and fluorite keeps at about 75% and 10%, respectively, at the pulp pH 9.3~9.6 and PA-Na concentration from 30 to 50 mg/L. IR spectra results suggest that PA-Na has a chemical effect on the surface of scheelite and

Fluorspar Beneficiation,Fluorspar Beneficiation Process ...

Fluorspar Beneficiation Process Plant. 1 The Fluorspar Beneficiation Problem. Acid grade fluorspar which is in great demand by the chemical and aluminum industries, must contain at least 97.5% CaF 2 with not more than 1.5% SiO 2 and 0.5% Fe 2 O 3.Often the Silica is limited to 1.2% with penalties starting at 1.0% SiO 2.These limitations on grade and impurities require extremely close mill ...

(PDF) Scheelite flotation: a new scheme using oleoyl ...

[Show full abstract] calcite with Na2CO3 in scheelite rougher flotation the fluorite flotation can be carried out more easily, and the fluorite concentrate with a grade of CaF2 97.42% and CaCO3 0 ...

Summary of Fluorite Ore Flotation Process - JXSC Machine

Apr 24, 2019· Summary of Fluorite Ore Flotation Process. Taking deep research on the features, extraction methods, and fluorite mining machines have a significant positive effect on running the fluorite processing plant successfully. In the following paragraphs, I have made a detailed introduction from fluorite mineral attribute to extraction methods and ...

258 is given in log C pH and flotation effect of sodium ...

18 Solution equilibria of surfactants Fig. 2.4 b shows the flotation of scheelite, fluorite and calcite using sodium oleate and trisodium phosphate. The flotation of fluorite and calcite can be depressed by sodium phos-phate at pH < 9. 5 and pH < 10. 0, respectively, but not that of scheelite.Since the PZC of scheelite, fluorite and calcite are pH = 1. 5, 9.5, and 10.0, respectively (Wang ...