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calcite flotation concentrate
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Flotation separation of fluorite from calcite by a new …
After curdlan was added, the flotation recovery of fluorite decreased slightly and remained above 80%. The calcite was strongly depressed and its flotation recovery decreased to less than 5%. The results showed that the flotability of fluorite and calcite was significantly different with the addition of curdlan.
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Minerals | Free Full-Text | Selective Flotation of Calcite from
The results demonstrated a high selectivity for the flotation of calcite from fluorite using this new reagent schedule. The best selective separation for a single mineral and mixed binary minerals was obtained when 200 mg/L of NaF, 50 mg/L of CA, and 6 mg/L of SOA were used at pH 9. ... Table 1 shows that in the calcite concentrate, the calcite ...
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Enhanced Flotation Separation of Cassiterite from Calcite …
At present, the research on flotation separation of cassiterite and gangue minerals is mainly focused on the development of new collectors or depressants, while the research on combined depressants is rare. In this study, the flotation separation of cassiterite and the typical gangue mineral, calcite, was investigated using the metal …
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Apatite Calcite Flotation Separation Using Sodium N …
calcite and apatite materials. To determine the amount of calcite recovered from the flota-tion experiments, the concentration and grade of calcite in the samples were compared. The variables W1 and W2 in Equation (1) represent the masses (g) of the concentrate and tailings, respectively. In Equation (2), g1 (%) and c (%) are the yield …
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Flotation separation of bastnaesite from calcite using …
The existence of calcite in bastnaesite concentrate will significantly increase acid consumption in leaching process and decrease the purity of REE in solvent extraction procedure [8]. Therefore, it is essential to remove calcite from bastnaesite concentrate during flotation process.
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Study on synergistic inhibition and mechanism of flotation
Flotation 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 …
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The role of sodium phytate in the flotation separation of …
Abstract. The effective flotation separation of smithsonite and calcite has always been a thorny problem due to their relatively similar physicochemical property. Developing efficient and selective depressant is the key to address this obstacle. In this study, sodium phytate (SP) was introduced as a novel depressor for high-efficient …
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Difficulties and Recent Achievements in Flotation Separation …
In the flotation separation of fluorite from calcite and celestite, the Al 2 (SO 4) 3 and acidified water glass mixed depressant increased the grade and recovery of …
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Flotation separation of fluorite and calcite using anhydrous …
The results of flotation tests exhibited that P 2 O 5 concentrate with optimum recovery was obtained when 70 g/t sodium alginate was added, and it proved to be a potential phosphate flotation depressant. The abovementioned depressants are macromolecular organic compounds. ... The micro-flotation experiments demonstrated …
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Investigation on flotation separation of bastnaesite from calcite …
Effective separation between bastnaesite and calcite can be realized. The concentrate with 68.82 % REO grade and 90.23 % REO recovery was obtained with 3 × ... a novel hydroxamic acid OIBHA was used as the collector in the flotation separation of bastnaesite from calcite. Single mineral flotation results demonstrated that OIBHA …
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Flotation separation of fluorite from calcite using …
Flotation experiments illustrate that PASP can selectively inhibit calcite but exert little influence on fluorite flotation. In the real ore containing 20.12% CaF 2 and 6.71% CaCO 3, a concentrate containing 93.56% CaF 2 with a recovery of 57.82% is obtained in the closed-circuit flotation test.
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Flotation separation of scheelite from calcite using
This paper proposes luteolin (LUT) as a novel depressant for the flotation-based separation of scheelite and calcite in a sodium oleate (NaOL) system. The suitability of LUT as a calcite depressant is confirmed through micro-flotation testing. At pH = 9, with LUT concentration of 50 mg·L−1 and NaOL concentration of 50 mg·L−1, scheelite …
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The flotation separation of fluorite from calcite using …
The floatability of fluorite and calcite as a function of NaOl dosage at pH 8.0 is shown in Fig. 4.As seen in Fig. 4, flotation recoveries of fluorite and calcite significantly increased with increasing dosage of NaOl and remained constant at high collector concentration.The flotation recovery of both fluorite and calcite was over 90 % using …
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Flotation separation of fluorite from calcite using bis …
In contrast, in flotation concentrate, the F grade was almost doubled from 23.75 % to 43.55 % with a F recovery of 92.14 % when OBHA was used as collector. In …
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Flotation separation of barite from calcite using acidified water glass
When the concentration of AWG increased to 180 mg/L, the BaSO 4 grade of flotation concentrate improved to 93.78% with 88.10% recovery. The flotation of mixed minerals confirmed that AWG depressant can be used for the flotation separation of barite and calcite when using NaOl as the collector.
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Flotation separation of apatite from calcite based on the …
Flotation separation of apatite and calcite is difficult due to the same surface properties and depressant is essential. As shown in Fig. 2, the recovery of apatite increases from 69.74% to 85.03% when the pH increases from 6.0 to 8.0.Then the apatite recovery obviously decreases to 40.95% when the pH reach to 11.0.
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Calcite Processing by Flotation for Beneficiation
Calcite is activated and floated into the froth concentrate while the sericite, quartz, and other silicates are depressed and rejected into the flotation tailing. The froth from the last 2 or 3 cells of the "Sub-A" calcite flotation circuit may be recycled, if desired to maintain grade and provide a final refuse low in calcite.
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Influence of lead ion pretreatment surface modification on reverse
Calcite is therefore also depressed when CA is used as a reverse flotation depressant for high-calcite-type fluorite ores, which leads to high calcite content in the fluorite concentrate. To avoid this, surface modification can be applied to increase the surface differences between fluorite and calcite, and the latter can be activated to ...
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Sulfonated brown coal: A novel depressant for the selective flotation …
The grade of scheelite was 24.35 %, and the grade of calcite was 74.90 % in the mixed minerals. In the flotation concentrate without SBC, the grades of scheelite and calcite reached 27.10 % and 72.88 %, respectively, while the recovery of scheelite and calcite was 88.22 % and 77.11 %, respectively.
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Flotation separation of fluorite from calcite using bis …
After flotation, the concentrate and tailings were both collected, dried, weighed, and assayed for calculation of the recovery and grade. In single mineral flotation, the recovery was calculated from the mass ratio of concentrate to raw ore. ... For calcite flotation, the recovery of calcite first increased, then reached the plateau and ...
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Hydrolytic polymaleic anhydride as a depressant for flotation
Following the completion of each test twice, the average value was used to determine the final result. For artificially mixed minerals (1 g of smithsonite and 2 g of calcite) flotation tests, chemical titration was used to evaluate the grade of concentrate and tailings respectively, to calculate the recovery of each product. 2.3.
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Reverse calcite flotation applied for the beneficiation of the …
Microflotation experiments demonstrated the selectiveness of the reverse calcite flotation, obtaining a concentrate product with a maximum of 84 % calcite grade. The …
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Adsorption and depression mechanism of an eco-friendly …
In this work, dextrin, an effective and eco-friendly organic compound, was used to separate fluorite from calcite. The depression performance and adsorption mechanism of it on the calcite surface were investigated by flotation experiments, contact angle measurements, Fourier transform infrared spectroscopy (FTIR) measurements, …
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Effect of Fluoride Ion on the Separation of Fluorite …
After adding NaF, the grade of fluorite in the concentrate increased from 35.26% to 61.08%, and the grade of calcite decreased from 64.74% to 38.92%, indicating that the addition of a fluoride ion can …
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Flotation separation of fluorite from calcite by a new …
Flotation is currently the most effective separation and enrichment method for. fluorite ores [4]. The most commonly used collectors for fluorite flotation are fatty acid collectors [5]. …
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The exploration of tannin extract as a green depressant in …
Froth flotation is a common method to concentrate fluorite from ores [5], [6]. During the flotation separation process, the difference in surface hydrophobicity between valuable and gangue minerals is important. ... Microflotation results showed that the high recoveries of both fluorite and calcite flotation could be obtained when the …
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(PDF) Effect of calcium concentration on calcite flotation from …
The flotation process currently considered for apatite concentration from the Santa Quitéria phosphate deposit (Brazil), involves bulk flotation of apatite and calcite with anionic collector at ...
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Sulfonated brown coal: A novel depressant for the selective flotation
Under the conditions of pH 8.0, styrene phosphonic acid (SPA) 80 mg/L, and HCA 6 mg/L, the flotation recovery of cassiterite and calcite was 82.01% and 19.18%, respectively, in the flotation ...
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Selective flotation of scheelite from calcite and fluorite …
In this study, a collector mixture of 733 and MES (sodium fatty acid methyl ester sulfonate) demonstrated a high selectivity for the flotation of scheelite from calcite and fluorite. An optimal mass ratio 4:1 of 733:MES was found, producing a 65.76% WO 3 concentrate grade with a recovery of 66.04% from a feed material containing only …