The selective separation of scheelite from fluorite is difficult because of their similar surface properties. In this study, diethylenetriaminepentaacetic acid (DTPA) was used as a novel depressant for the efficient removal of fluorite from scheelite, and its depression effect and mechanism were systematically investigated by conducting micro …
DetailsIn this study, OBHA was used as collector for the flotation separation of fluorite and calcite. Under a natural slurry pH environment, the recovery of fluorite reached 80 % while calcite recovery was less than 5 % with 3 × 10 −4 mol/L OBHA. The flotation separation of fluorite from calcite can be achieved without the addition of depressants.
DetailsIn order to further investigate the effect of citric acid on the flotation behavior of minerals, the fluorite-barite binary mixed ore was prepared in a ratio of 1:1, and the pH value and the amount of citric acid were used for reverse flotation separation of fluorite-barite binary artificial mixed ore. The results are shown in Fig. 3.
DetailsFlotation is the usual method for concentrating fluorite to a commercial grade product. Due to the difficult. prN-Jblems encountered when trying to selectively float fluorite from its …
DetailsThe fluorite concentrate with a grade of 95.61% and a recovery of 82.14% and the barite concentrate with a grade of 94.01% and a recovery of 77.83% were obtained by the full …
DetailsAt pH 10, the single mineral flotation results show that with the increase of SS dosage, the flotation recovery of fluorite rapidly decreases from 61.5% to 35.31%, while the flotation rate of ...
DetailsMicro-flotation and contact angle results showed that the adsorption of calcium could inhibit the hydrophobicity of scheelite and fluorite. Moreover, sulfate could enhance the inhibition. FT-IR results showed that calcium could be priori precipitated into calcium oleate and adsorb on mineral surface.
DetailsSingle mineral flotation tests were conducted in an XFG flotation machine at a spindle speed of 1700 rpm (Wang et al., 2016).The XFG machine configuration has been reported in our previous publication (Gao et al., 2016a).The mineral suspension was prepared by adding 2.0 g of single mineral or mixed binary mineral samples (1 g fluorite …
DetailsDownloadable (with restrictions)! The authors provide insight into the problem of selective flotation of fluorite from quartz–fluorite ores. The flotation of fluorite mineral from ores by using acidized water glass as depressant has been studied for substitution of the commonly used depressant. It was found that the acidized water glass could achieve …
DetailsIn this study, to enhance the flotation of fine-grained fluorite, a strategy that combines simultaneous grinding and surface modification via ball-milling and controlled gas-liquid …
DetailsAs an important strategic non-metallic mineral resource, fluorite has been widely used in various industrial fields, such as metallurgy, optics and semiconductor manufacturing, as well as fluorine-related chemical engineering. Since the major gangue minerals of fluorite ore are silicate and carbonate ones, flotation is the main …
DetailsSulfide fluorite type ore: mainly flotation method, adding a small amount of sulfide ore inhibitor (such as cyanide) to suppress residual sulfide to ensure the quality of fluorite …
DetailsFurther, the sulfur content in the fluorite concentrate can be reduced to 0.02% with 91.52% fluorite recovery by single flotation test with 1.7 kg/t renewable collector dosage. Moreover, the closed-circuit flotation process was designed, fluorite concentrate with CaF 2 grade of 97.08% can be obtained, and the sulfur content is only …
DetailsFlotation is the most efficient method to recover this type of fluorite. Fluorite and calcite contain Ca 2+. During flotation, the physical and chemical properties of the two minerals …
DetailsFluorite (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. The development of a selective collector and/or depressant is the key to achieving high selective separation. 1-Hydroxyethylidene-1,1-diphosphonic acid (HEDP …
DetailsIt was found that the acidized water glass could achieve higher selectivity of fluorite minerals against gangue minerals in the fluorite flotation. The experimental results …
DetailsThe authors provide insight into the problem of selective flotation of fluorite from quartz–fluorite ores. The flotation of fluorite mineral from ores by using acidized water glass as depressant has been studied for substitution of the commonly used depressant. It was found that the acidized water glass could achieve higher selectivity of …
DetailsResults of flotation of fluorite from te chnogenic tailings in var ious grinding modes . ... As a result, a fluorite co ncentrate was obtained, with a CaF 2 content of 95.26%, ...
DetailsStudy of the prospects for expanding the range of collectors in the flotation of fluorite from technogenic raw materials ... makes it possible to obtain a co ncentrate containing 1.18% SiO 2, a ...
DetailsAs shown in Fig. 4 (a), the flotation recovery of fluorite and calcite has significantly different responses to the change in the composition of the mixed collector. As the proportion of DDA increased, the recoveries of fluorite and calcite have opposite trends. The recovery of fluorite has gradually declined, and calcite recovery shows an ...
Detailsthat higher fluorite recovery was a consequence of ESVO smaller surface tension comparing to sodium oleate. Keywords: emulsified sodium vegetable oleate, collector, fluorite flotation, sodium oleate 1. Introduction Fluorite is widely used for producing hydrofluoric acid, making glass and as flux in steel, etc. These
DetailsIn this review, analyses of the fundamental reasons for the difficulties of flotation separation of fluorite from calcite are performed, from the similar surface properties of …
DetailsThe present paper presents the results of fluorite flotation carried out on a column cell without wash water addition. Concentrate flow was obtained by making tailing flows …
DetailsWhereas a metallurgical-grade fluorite is obtained by gravity and magnetic separation methods, flotation is the major concentration process for the production of acid-grade fluorite. Selective ...
DetailsAfter ultrasonic pretreatment of pulp inhibited by sodium humate for 39 min, the flotation recovery of fluorite reached 84.74%, while the flotation recovery of calcite was only 11.47%, with a difference of 73.27%. Exploring the mechanism of ultrasonic pretreatment, it is found that the absorption intensity of sodium humate on the surface of ...
DetailsOleic acid is a widely utilized collector in fluorite flotation. A novel hydroxamic acid collector, N,9,10-trihydroxyoctadecanamide (THODA), has been developed based on the molecular structure of oleic acid. Compared to oleic acid, THODA exhibits a superior selectivity in the flotation separation of fluorite and calcite.
DetailsIn this study, the activation mechanisms of fluorite inhibited using Na 2 SiO 3 by adjusting the solution pH to neutral and slightly alkaline conditions were investigated. The solution chemistry of sodium silicate and microflotation tests showed that SiO(OH) 3 − in the Na 2 SiO 3 solution strongly inhibited fluorite flotation, while H 4 …
DetailsThe authors provide insight into the problem of selective flotation of fluorite from quartz–fluorite ores. The flotation of fluorite mineral from ores by using acidized water glass as depressant ...
DetailsThe fluorite (CaF 2) lump and calcite (CaCO 3) lump used in this study from a fluorite mine in Hunan province and the Ye's mineral specimen group in Guangdong province, China, respectively.After manual crushing, agate grinding and wet screening, the –150 + 37 µm size fractions were used for flotation experiments, FTIR spectroscopy …
DetailsThe distribution of fluorite, calcite, and sulfur in each stage of fluorite flotation was investigated (Fig. 11). Both fluorite and sulfur minerals were enriched significantly in flotation, and the grade of sulfur and fluorite increased over threefold to 0.5% and 93%, respectively, from raw ore to the concentrate of cleaning 8. ...
DetailsFluorite is an important strategic mineral. In general, fluorite ores will contain a certain amount of calcite gangue mineral. Thus, they need to be separated from each other. For an economic separation, a reverse flotation process is used to float calcite gangue from fluorite. However, little information on the separation is available. In this …
DetailsThe authors provide insight into the problem of selective flotation of fluorite from carbonate-fluorite ores. It is found that oxyhydrate collectors used in combination with sodium fluoride provide rather high level of selectivity in fluoride flotation from poor high-carbonate ores and make it possible to eliminate high-temperature pulp treatment with …
Details1. Introduction. Scheelite (CaWO 4) is a typical tungstate mineral and usually co-exists with other calcium-containing minerals, such as calcite (CaCO 3) and fluorite (CaF 2) in deposit.By now, flotation is the most commonly used technique to separate scheelite from calcite and fluorite. Long chain carboxylic acids, such as fatty …
DetailsThe emulsified sodium vegetable oleate (ESVO) was prepared with low-cost vegetable oleate. Using ESVO as a collector, the flotation performance of fluorite had been investigated comparing with sodium oleate at a temperature of 20 ± 2 °C. The results of flotation showed that ESVO had better collecting performance than the sodium …
DetailsThe results confirmed that NTA could be used as a depressant to selectively inhibit fluorite flotation. The mechanism study illustrated that NTA was selectively reacted with …
DetailsThe authors provide insight into the problem of selective flotation of fluorite from quartz–fluorite ores. The flotation of fluorite mineral from ores by using acidized water glass as depressant ha... SRL covers the elucidation of properties and processes that occur at the boundaries of materials; surfaces and interfaces. Both the physical ...
DetailsFig. 1 a shows the effect of pH on the recoveries of bastnaesite and fluorite using SPA and CHA as the collectors, respectively, with their dosages of 2 × 10 −4 mol/L and 1 × 10 −4 mol/L, respectively. In these experiments, terpineol was used as the frother with its dosage of 5.34 mg/L. Both the recoveries of bastnaesite using SPA and CHA, …
DetailsFig. 2 indicates the fluorite & bastnaesite recoveries within separate mineral flotation at pH 4–12 (the amount of SO is fixed at 80 mg/L). When the pH value falls between 6.71 and 12.0, the fluorite recovery rate is greater than 95 %. In terms of the bastnaesite recovery rate first increases and then drops as the pH value increases.
DetailsPE series jaw crusher is usually used as primary crusher in quarry production lines, mineral ore crushing plants and powder making plants.
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