Enhancing selective calcite and dolomite flotation in the …
The successful incorporation of carbonaceous phosphate flotation tailings as filler in Portland cement has been demonstrated (Zheng et al., 2015). ... when used in …
Flotation separation of apatite and calcite using gum arabic …
The results of single mineral flotation experiments showed that GA performed a considerable selective depression on calcite at pH 7–11, and a concentrate with apatite recovery of 88.84% and P 2 O 5 grade of 26.86% was obtained in the apatite-calcite binary mixed mineral flotation experiment. Therefore, GA can be used as a …
Double reverse flotation of a very low grade sedimentary phosphate rock
Highlights The flotation response of apatite and calcite using of fatty acid collectors were investigated. Several kinds of phosphate minerals depressant were also evaluated. Phosphoric and sulfuric acids successfully depressed sedimentary phosphate minerals. A mixture of (Na,K) Tartarat and aluminum sulfate had a maximum effect on …
Review of the reagents used in the direct flotation of …
The results showed that the depression effect of sodium alginate is more pronounced on the calcite flotation using oleate collector, without affecting the flotation performance …
Collectors used in phosphate ores flotation | Download …
Disodium dodecyl phosphate was stated to be a suitable collector for se- lective flotation of calcite and phosphate from quartz at pH above 9.0 ( Seth et al., 1975), but no selectivity was ...
Reagents used in the flotation of phosphate ores: a critical …
Section snippets Flotation of phosphate ores. Sparingly soluble minerals such as apatite (Ca 5 (PO 4) 3)(F,OH), fluorite (CaF 2), calcite (CaCO 3), sheelite (CaWO 4), magnesite (MgCO 3), and barite (BaSO 4) are hydrophilic, selective hydrophobization of the desired mineral by various reagents is critical in determining the effectiveness of the …
A Critical Review on the Flotation Reagents for Phosphate …
It emphasizes that the formation of the CaHPO 4 /gypsum is the main reason behind apatite hydrophilicity and depression. Calcite flotation from a carbonate …
Exploration of an eco-friendly depressant 2
1. Introduction. Barite is the most common barium-bearing mineral with the chemical formula of barium sulfate (BaSO 4), which usually derives from low-temperature hydrothermal veins and sedimentary rocks [1], [2].For the sake of special physical and chemical properties, barite could be used as an important non-metallic raw material in …
Understanding the depression mechanism of sodium citrate …
Meanwhile, the tests also found that ATMP had a strong depression ability to calcite, but it hardly influenced the apatite floatability. ... flotation experiments were used to verify the efficiency of industrial application of polyepoxysuccinic acid in the flotation phosphate ores. Depression mechanism of polyepoxysuccinic acid was revealed ...
Role of calcium ions and their interaction with depressants in
The commonly utilized flotation scheme in phosphate industry is reverse flotation using fatty acids in acidic media adjusted by H2SO4. The acidity of the …
The effect of jojoba oil on the surface properties of calcite …
The beneficiation of phosphate ores by froth flotation is the most efficient process used to separate apatite from calcium minerals. However, the similarity of surface properties between apatite and calcite generally leads to non-selective adsorption of reagents, rendering the selective separation of these minerals a problem, demanding a …
sbm mechanisms of phosphate depression flotation.md
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Calcite in froth flotation
In order to selectively separate smithsonite and calcite using potassium lauryl phosphate as collector and reveal the depression mechanism, the approaches of micro-flotation and zeta potential ...
Effect of depressants in the selective flotation of smithsonite …
Abstract: In order to selectively separate smithsonite and calcite using potassium lauryl phosphate as collector and reveal the depression mechanism, the approaches of micro-flotation and zeta potential measurements were adopted. The effects of sodium hexametaphosphate (SHMP), water glass (WG), carboxymethyl cellulose …
Flotation Enhancement of sedimentary phosphate ores by …
Fig. 6 shows the phosphate ore flotation results obtained for the different starch concentrations. The soybean oil soap dosage and pH were set at 10.3 g/L and 8.5, respectively. As can be seen in Fig. 6, it was found that corn starch has a clear effect on the selective depression of phosphate minerals. The dosage of depressant between 2000 …
Review of the reagents used in the direct flotation of phosphate ores
The results showed that the depression effect of sodium alginate is more pronounced on the calcite flotation using oleate collector, without affecting the flotation performance of fluorapatite. In the anionic flotation of natural iron ore (Bai et al. 2019 ), the use of soluble starch as depressant for hematite in apatite flotation exerts the ...
Effect of sodium pyrophosphate on the flotation separation of calcite
Additionally, calcareous phosphate ore is an important natural resource of phosphorus, in which apatite is the major phosphate mineral, while calcite and dolomite are the main gangue minerals [3], [4]. Reverse flotation is a common method for the separation of apatite from calcareous phosphate ore [5], [6], [7].
Utilization of polyepoxysuccinic acid as the green …
However, there are few studies related to depressants of gangue mineral calcite during apatite flotation. 2-Phosphonobutane-1,2,4-tricarboxylic acid (PBTCA) has also been studied as a calcite depressant in apatite flotation (Liu et al., 2019a), but the phosphate group of PBTCA will cause eutrophication of water bodies, and therefore will …
A modification in the flotation process of a …
Anionic flotation of calcite from a calcareous siliceous sedimentary phosphorite was successfully conducted at pH 4.5 after natural depression of phosphate without any addition of phosphoric acid. Raising the pH to 9, flotation of phosphate proceeds leaving silica in the bottom of the flotation cell without using silica depressant.
Selective adsorption of sodium polyacrylate on calcite …
Froth flotation is a typical method for separating phosphate minerals from other minerals (calcite, dolomite, quartz and rutile, etc.) [1], [13], [14], [15]. Flotation is a physico-chemical separation process that utilizes the difference in surface properties of the valuable minerals and the unwanted gangue minerals [16], [17], [18].
Flotation separation of brucite and calcite in dodecylamine …
DOI: 10.1016/s1003-6326(24)66567-2 Corpus ID: 272708598; Flotation separation of brucite and calcite in dodecylamine system enhanced by regulator potassium dihydrogen phosphate
Reagents used in the flotation of phosphate ores: a critical …
The dominant flotation process currently used for processing of siliceous phosphates in Central Florida is the Crago "Double Float" process (Giesekke, 1985; Zhang et al., 1997).The simplified flotation flowsheet is given in Fig. 1.In this process, after desliming and sizing, the ore is conditioned with fatty acids and fuel oil at a pH of 9.0–9.5.
Calcite Flotation in Potassium Oleate/Potassium Dihydrogen …
Calcite flotation in acidic media is a difficult task due to the solubility of calcite and consequently the release of calcium ions in the flotation pulp. In addition, …
The role of sodium alginate in the flotation separation of …
Apatite is the valuable mineral in phosphate ores. It is classified as a sparingly soluble salt-type mineral. A common group of minerals found with apatite as gangue are clay, dolomite, quartz and calcite [1, 2]. The flotation of phosphate ores containing siliceous gangue is successful due to the different surface properties of …
Investigations of amino trimethylene phosphonic acid as a …
The apatite recovery reached the maximum value of ∼90% while calcite flotation can achieve even higher recovery (92%) in the presence of 1.8 × 10 −4 mol/L. Conclusions. ATMP was introduced as a depressant for the flotation separation of calcite from apatite using NaOl as the collector in this work.
Depression mechanism of novel organic phosphoryl …
Study on flotation depression mechanism of calcite with depressants by DFT method. ... fluorite, scheelite, gold minerals, rare earth minerals, phosphate …
Effects of sodium carbonate and calcium chloride on calcite depression
Hexametha- phosphate was applied for depressing of calcite in the cationic flotation of smithsonite [11]. Sodium silicate was used as a depressant for calcite in the cationic flotation of pyrolusite by Armac C [15]. ... and leads to depression of calcite flotation. 5 Conclusions 1) Using dodecyl amine (DDA) as a cationic collector, the …
Effect of geological origin of apatite on reverse flotation separation
1. Introduction. Phosphate is an incredibly important mineral resource that cannot be recycled and renewed in agriculture and has received increasing attention owing to its extended land use for rising biodiesel and food production (Sis and Chander, 2003, Cao et al., 2015).Flotation is an effective approach that can be used to selectively …
Flotation separation of brucite and calcite in dodecylamine …
The depression mechanism of a combination of ZnSO4 and Na2CO3 on talc during chalcopyrite and molybdenite flotation was investigated in-depth using flotation tests, solution speciation ...
Depression mechanism of acid for flotation separation of …
Currently, inorganic acids (H 3 PO 4 / H 2 SO 4 / H 3 PO 4 - H 2 SO 4 mixed acid) are generally employed as inhibitors in the reverse flotation of calcareous phosphate ore to separate fluorapatite from dolomite. The flotation results, obtained with different acid inhibitors at a NaOL concentration of 5.0 × 10 −5 mol·L −1, are presented in ...