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20/07/2020 To confirm the selective depressing ability of GS, the flotation tests of mixed minerals were conducted at pH 7.5 using the reagent scheme of GS/NaOl and the results were shown in Table 1. Note that the mass ratio of fluorite to barite was 4:1 in this study which was chosen based on the common phenomenon in practice. It shown that a concentrate with 81.76% grade of CaF 2 was
01/12/2020 The PSG has excellently selective depression effect on calcite. • Flotation separation of fluorite from calcite can be achieved with PSG. • The chemisorption dominates the interaction of PSG with calcite. Abstract. Separating fluorite and calcite through flotation is difficult due to their similar Ca 2+ sites on the adsorption surface of collectors. Psyllium seed gum, a reagent naturally ...
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. The effect of temperature on the
01/07/2020 It can be seen from Fig. 4 that SL had a selective depression effect on calcite flotation. The floatability of calcite reduced sharply as the SL concentration increased, but the floatability of fluorite changed relatively little. The recovery of calcite reduced from 62% to 15% when 9 mg/L SL was added. While for fluorite, the recovery only dropped from 86% to 76%. The micro-flotation results ...
selective depression effect of PA-Na is better than that of sodium silicate, and PA-Na can depress fluorite more effectively than scheelite. 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 ...
01/05/2020 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 −4 mol/L Cu(II).
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. The different depressant–mineral interactions were investigated via electro-kinetic studies and molecular dynamics (MD) simulations using the Materials Studio 6.0 ...
Pulp pH value plays a significant role in the froth flotation. Especially in the flotation of fluorite, the performance of flotation will be affected greatly by pulp pH. MO, a new kind of modified fatty acid was used as collector, and H2SO4 and Na2CO3 were used to regulate pulp pH in the experiment. The mechanism of influence of pulp pH on flotation of fluorite and calcite was investigated by ...
Starting with pH > 4.5 flotation of fluorite takes place upon calcium oleate CaOl2 formation (Fig. 3). But practically under the same conditions of CaOl2 formation (at solubility product of [Ca2+ ][Ol–]2 = –15.4 (Bogdanov et al.) we can observe complete flotation of mineral (pH 7.0) and complete depression of its flotation (pH 10.5) despite
In addition, the flotation results of the tailings from Jiangxi containing fluorite and calcite, indicated that the grade and recovery of fluorite increased from 87.18% and 40.99% for 0 days to 93 ...
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. The effect of temperature on the
Investigation of two-stage depressing by using hydrophilic . The industrial tests were performed at Hunan Xinyuan Corporation s Fluorite Flotation Plant. In these tests mud was removed early in the process by fluorite desliming rougher flotation. The old system used sodium silicate as a depressant during flotation. The flotation flowsheet of the industrial tests is described in Fig. 7. The new ...
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. The different depressant–mineral interactions were investigated via electro-kinetic studies and molecular dynamics (MD) simulations using the Materials Studio 6.0 ...
24/04/2019 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 machines and listed 2 cases for your
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.
fluorite flotation, in order to increase the separation efficiency and lower the operation costs. It was [1] reported that methanoic acid could selectively adsorb onto fluorite surfaces in preference to calcite surfaces at ambient temperature. This means that fluorite flotation to remove calcite might be achieved at a much lower temperature if methanoic acid is used as collector, resulting in ...
Pulp pH value plays a significant role in the froth flotation. Especially in the flotation of fluorite, the performance of flotation will be affected greatly by pulp pH. MO, a new kind of modified fatty acid was used as collector, and H2SO4 and Na2CO3 were used to regulate pulp pH in the experiment. The mechanism of influence of pulp pH on flotation of fluorite and calcite was investigated by ...
Starting with pH > 4.5 flotation of fluorite takes place upon calcium oleate CaOl2 formation (Fig. 3). But practically under the same conditions of CaOl2 formation (at solubility product of [Ca2+ ][Ol–]2 = –15.4 (Bogdanov et al.) we can observe complete flotation of mineral (pH 7.0) and complete depression of its flotation (pH 10.5) despite
Fluorite flotation: please anybody suggest good depressants for silica and calcite in fluorite flotation. My specs are now: Raw fluorspar has CaF2 =60%, CaCO3=19.5% and SiO2=9.7%, I am already using water glass, pH=10, with oleac acid as collecter. Concentrate has CaF2=88.7%, eliminated silica to 0.43% but still there is CaCO3 about 5%. Caf2 Calcium Fluoride Fluorite Fluorspar Flotation ...
then evaluated with single mineral flotation tests and binary mixed mineral flotation tests. The depression mechanism has been investigated by FTIR spectra analyses, zeta potential measurements and contact angle measurements. Physicochem. Probl. Miner. Process., 54(2), 2018, 228-237 229 2. Experimental 2.1 Minerals and reagents Hand-picked fluorite and barite samples were collected from ...
24/04/2019 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 machines and listed 2 cases for your
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. The effect of temperature on the
Investigation of two-stage depressing by using hydrophilic . The industrial tests were performed at Hunan Xinyuan Corporation s Fluorite Flotation Plant. In these tests mud was removed early in the process by fluorite desliming rougher flotation. The old system used sodium silicate as a depressant during flotation. The flotation flowsheet of the industrial tests is described in Fig. 7. The new ...
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.
Pulp pH value plays a significant role in the froth flotation. Especially in the flotation of fluorite, the performance of flotation will be affected greatly by pulp pH. MO, a new kind of modified fatty acid was used as collector, and H2SO4 and Na2CO3 were used to regulate pulp pH in the experiment. The mechanism of influence of pulp pH on flotation of fluorite and calcite was investigated by ...
Starting with pH > 4.5 flotation of fluorite takes place upon calcium oleate CaOl2 formation (Fig. 3). But practically under the same conditions of CaOl2 formation (at solubility product of [Ca2+ ][Ol–]2 = –15.4 (Bogdanov et al.) we can observe complete flotation of mineral (pH 7.0) and complete depression of its flotation (pH 10.5) despite
then evaluated with single mineral flotation tests and binary mixed mineral flotation tests. The depression mechanism has been investigated by FTIR spectra analyses, zeta potential measurements and contact angle measurements. Physicochem. Probl. Miner. Process., 54(2), 2018, 228-237 229 2. Experimental 2.1 Minerals and reagents Hand-picked fluorite and barite samples were collected from ...
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.
A process according to claim 1 or 2, wherein the conditioning of the pulp of fluorite ore for flotation is performed in the presence of a mixture of flotation chemical agents, including amyl potassium xanthate. 6. A process according to claim 5, wherein the mixture of flotation chemical agents includes copper sulfate, sodium sulfide and a foaming agent. 7. A process according to claim 1 or 2 ...
Flotation responses of these minerals in the presence of potassium oleate and sodium silicate are presented and compared with electrokinetic data. Colloidal silica appears to be the species principally responsible for calcite depression, while silicate anion is the species responsible for fluorite depression. Additions as high as 1 x 10-³ mole/liter silicate have no effect on the flotation ...
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