Beneficiation of fluorite by flotation in a new chemical
The types and dosage of dispersant on the improvement of fluorite flotation were investigated; when the sodium polyacrylate (SPA) was used as the dispersant and its addition is %, the
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The types and dosage of dispersant on the improvement of fluorite flotation were investigated; when the sodium polyacrylate (SPA) was used as the dispersant and its addition is %, the
Dec 01, 2020#0183;#32;The flotation separation of fluorite from calcite is realized when the adsorption amount on calcite surface is higher than that on fluorite surface (Tian et al., 2019a). Nevertheless, the depressive effect is greatly affected by the pH value ( Tian et al., 2019a ), with the excellent selective depressive effect only achieved in the pH range of
Apr 01, 2019#0183;#32;In this paper, trisodium phosphate (TSP) was utilized for the flotation separation of fluorite from barite. Microflotation results showed that good floatability of both fluorite and barite was obtained at around pH using sodium oleate (NaOL) as a collector. TSP showed a selective depression for barite, and flotation separation of fluorite from barite was achieved using TSP as a
Dec 10, 2017#0183;#32;The flotation of calcite and fluorite was almost totally depressed at a DSS dosage of 5 #215; 10 5 mol/L, with a calcite recovery of less than 5% and fluorite recovery less than 20%. Therefore, the optimal depressant dosage is determined to be DSS 5 #215; 10 5 mol/L
May 01, 2020#0183;#32;In the artificial sample flotation separation tests, with Cu(II) as a modifier and SPA as a collector, the fluorite was depressed while the flotation of cassiterite was unaffected. Zeta potential measurement and XPS detection revealed that SPA could adsorb on cassiterite surface in the absence and presence of Cu(II), but almost no SPA could adsorb on fluorite surface in the presence of Cu(II).
spectroscopy (XPS), and density functional theory (DFT). The flotation results reveal that the selective depression effect of PANa is better than that of sodium silicate, and PANa can depress fluorite more effectively than scheelite. The flotation recovery of scheelite and fluorite keeps at
In this study, two new collectors for fluorite flotation DPOMC1033 (DPI) and DPOMC1234 (DPII) 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.
In this study, two new collectors for fluorite flotation DPOMC1033 (DPI) and DPOMC1234 (DPII) were tested and compared with oleic acid (OA), sodium oleate (SO) and potassium oleate (PO).
R171A (100 g/t ; pH 9) for fluorite, combined with potassium dichromate as depressing agent for quartz and barite. The final flotation treatment has led to the obtention of a barite concentrate with a 93,4% BaSO4 grade and a fluorite concentrate. with 93,6% CaF2,both answering the usersrequirements.
Fluorite flotation process is applied for refractory fluorite with complicated properties such as high mud content impurity containing fine particle distribution etc. Our fluorite flotation process has many advantages including automatic controlling high efficiency
The best results are obtained using a combination of quebracho and white dextrin as depressants, reaching 74% of fluorite grade for modified column flotation and % for cell flotation.
In addition, the flotation results of the tailings from Jiangxi containing fluorite and calcite, indicated that the grade and recovery of fluorite increased from % and % for 0 days to 93
The best results are obtained using a combination of quebracho and white dextrin as depressants, reaching 74% of fluorite grade for modified column flotation and % for cell flotation.
In this work, the froth flotation of fluorite from an ore in China has been studied using an enhanced sodium naphthenate as collector and a salted copper sulfate as the depressant of phosphate
Jun 15, 2019#0183;#32;Phosphate derivatives as sodium hexametaphosphate [(NaPO 3) 6], sodium phosphate (Na 3 PO 4), and sodium pyrophosphate (Na 4 P 2 O 7) are also widely used inorganic depressants for scheelite flotation from calcite and fluorite, known to chelate Ca 2+ ions in solution leading to a surface depletion in terms of calcium ions [6,18,32,34]. However
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].
misc{etde_, title = {Principles of mineral flotation} author = {Jones, M H, and Woodcock, J T} abstractNote = {Papers presented at the symposium included; contact angles and flotation research; chemistry of flotation; flotation chemistry of fluorite/oleate system; pulp chemistry; surface chemistry, and flotation; retrospective view of flotation; surface forces in flotation a critique
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
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.
After adding HPMA, apart from the bands of PO 4 3 W. Sun1Hydroxyethylidene1,1diphosphonic acid used as pHdependent switch to depress and activate fluorite flotation I: depressing behavior and mechanism. Chem. Eng. Sci., 214 (2020), Article 115369. Article Download PDF Google Scholar
Aug 20, 2018#0183;#32;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 system greatly simplified the flotation process (compare to old flotation
Jul 20, 2020#0183;#32;Anionic flotation is the most efficient method to separate fluorite from barite in mineral processing while the critical point of successful separation lies on the depressant. A cheap and ecofriendly depressant, corn starch, has been gelatinized and introduced in this study. Microflotation experiments showed that the fluorite and barite presented nonselectivity in flotation with the
It is found that mmol/L of phenoxyl acetic acid derived from pyrogallol or gallic acid exhibits strong depressing ability on calcite in almost zero yields at pH value of, and calcite can be depressed in the flotation of calcite/fluorite mixture for approximate 87% yield of fluorite. The flotation result of practical nickel ore containing serpentine indicates that these two depressants may also show better
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