The mid-low grade of phosphate ore, rich by the silicate and carbonate gangue minerals needs a special treatment using the flotation process. Where the collectors play a pivotal role.
Phosphate tailing is an extremely fine by-product during phosphate ore flotation. Due to the large quantities and relatively higher P 2 O 5 content, the phosphate tailings have been considered as a potential P resource, compared to other P-bearing wastes. Besides, phosphate tailings also contain a large amount of available …
Phosphorus ore flotation tailings (POFTs) are an industrial solid waste generated in the process of phosphate mining, which contains a large number of Mg, Ca, and P resources. The sources, storage, …
The way to successfully upgrade a phosphate ore is based on the full understanding of its mineralogy, minerals surface properties, minerals distribution and liberation. The conception of a treatment …
Flotation of phosphate ores is a technically challenging process due to the variations in the composition of phosphate-bearing minerals and the similar physicochemical properties of phosphate ...
Similarly, a study on the flotation of apatite from siliceous-calcareous phosphate ore proved that the mixed of 10% of nonionic ethoxylated nonylphenol EP-4 surfactant with cottonseed oil fatty acid salt as a collector resulted in a phosphate concentrate assaying 30.95% P 2 O 5 at 90.5% recovery from a feed containing 22.14% P 2 O 5 (Ruan et al ...
The feasibility of dephosphorization using the flotation process and its mechanism of high-phosphorus oolitic hematite were discussed in this paper. The results showed that phosphorus minerals …
To concentrate phosphate, reverse cationic flotation of carbonates at acid pH was applied after grinding. Comparing the laboratory results on the application of collector Flotigam DAT and Flotinor V2711 in the flotation concentration of phosphate can conclude the following: - A flotation circuit of single stage is sufficient for upgrading …
Consequently, a good quality phosphate concentrate was obtained in an acidic medium (pH = 4.05) with 1 g of soybean oil soap collector, 20 min flotation time, 10 min conditioning time, 0.17 L×min ...
The phosphate ore sample for the batch flotation tests was obtained from the Wenfu Phosphate Company located in Guizhou Province, China. A chemical …
The phosphate ore sample for the batch flotation tests was obtained from the Wenfu Phosphate Company located in Guizhou Province, China. A chemical composition analysis showed that the ore contained 25.50% P 2 O 5, 18.98% of acid insoluble (A.I) and 6.83% of loss on ignition (L.O.I), as shown in Table 1.XRD and MLA analyses indicated …
The chemical composition analysis of the different size fractions was carried out using the XRF unit mentioned above. ... the flotation experiments were performed to evaluate the effect of circulation method on siliceous phosphate flotation performance. ... The recovery of P 2 O 5 in the concentrate indicated an increase as the circulation ...
Flotation Performance of a Peruvian Phosphate Ore 352 regarded as the basic unit operations. Cationic reverse flotation of silicates in natural pH (7.4-8.2) has been successfully developed to concentrate phosphate from beds 6-7 as the result from a collaborative research conducted by Vale S. A. and the Mineral Processing Research …
The ultra-pure magnetite concentrate was obtained by reverse flotation under the optimal conditions that the grinding fineness of superior magnetite concentrate was −38 μm accounting for 96 %, the cleaner times were 3, and the dosages of DDA and CS were 200 g/t and 1000 g/t. ... The chemical composition of lithium iron phosphate …
The dominant flotation process currently used for processing of siliceous phosphates in Central Florida is the Crago "Double Float" process (Giesekke, 1985; …
A refractory phosphate ore obtained from Guizhou, China, contains high amounts of detrimental metal impurities (e.g., Fe, Al, and Mg) which affect the deep wet processing of phosphorus products before use. In this study, mineralogy parameters of the ore such as mineral composition, disseminated particle size, mineral liberation degree, …
In contrast, reverse flotation uses cationic and anionic collectors for silicates and carbonates, depressants, and a pH modifier between 4 and 6. According to the results of several studies on the flotation of phosphate ores, reverse flotation can be used as a unique process for sedimentary phosphate ore (Abdel-Khalek, 2000; Boujlel …
Flotations concentrate of about 28.87% P2O5 was obtained from the reverse flotation technique, after conditioning the phosphate ore at 80% passing 150 lm under Lilafloat. Constant parameters such as 6 kV charging voltage, 25 kV separating voltage, inlet air, different charger rotary speed and splitter distances were investigated.
The chemical composition of phosphate ore, the solid residue and the acid leaching solution are showed in Table 1. The grades of P 2 O 5 and SiO 2 in the phosphate ore are 21.95% and 28.48%, respectively, indicating it is a medium–low grade phosphate ore with a high silicon content.
However, this process can only remove phosphate gangue minerals, and it is difficult to obtain high-quality phosphate concentrate. 02 Flotation process of siliceous phosphate. Qualified phosphate concentrate can be obtained after one positive treatment of siliceous phosphate. The gangue minerals of siliceous phosphate ore are …
The recommended approach to produce the phosphate concentrate is desliming followed by reverse flotation of apatite and an acid leaching of the apatite concentrate to lower the MgO content below ...
In this study, reverse flotation was applied to recover phosphate from a very low grade (5.01% of P 2 O 5) sedimentary ore.Sodium silicate, starch, tannic acid, aluminum sulfate, (Na,K)Tartarat, sodium tripolyphosphate, H 3 PO 4, and H 2 SO 4 were used as phosphate mineral depressants in acidic and alkaline conditions. Oleic acid …
The present invention relates to a process for treating non-sulfidic ores with a collector composition containing a primary and a secondary collector,wherein the primary collector is selected from the group of amphoteric and anionic surface active compounds and the secondary collector is an ethoxylated fatty acid wherein the average degree of …
Phosphate rock contains various gangue minerals including silicates and carbonates which need to be reduced in content in order to meet the requirements of the …
The phosphate concentrate obtained from flotation with 1.2% TREE and 14% P is baked with concentrated sulfuric acid at 270 °C for about 2 h. The paste produced is allowed to cool. The pasty mixture is then leached with water in 2 stages by using about 15 parts by weight of cold water for each part of original concentrate.
In the nitrophosphate process of fertilizer production, rare earth elements (REE) can be recovered as a REE phosphate concentrate. In this process, after digestion of apatite in concentrated nitric acid, Ca(NO 3) 2.4H 2 O is first separated by cooling crystallization and then the REE are precipitated in phosphate form by a partial …
The modal mineralogical composition of the flotation feed. Table 3. Concentrations of major elements in the studied sample given by XRF analysis. Grade in oxides (%) Grades in minerals (%) SiO 2 Al 2 O 3 MgO CaO ... Moreover, the phosphate concentrate consists of 80% apatite, 19% quartz and trace amounts of calcite and …
However, fine silicate mineral particles and K, Ca, Mg, Al, Fe, S compounds and other impurities scattered in the natural graphite still remain in the concentrate after flotation. Therefore, chemical or high-temperature purification methods are required to further improve the purity of natural graphite [18, 19]. The hydrofluoric acid method and ...
1: Flow diagram of the flotation circuit with mineral composition; D = Conditioner input, E = Rougher concentrate, F = Cleaner circuit (A) concentrate, G = Cleaner circuit (A) tailing, H = Cleaner ...
The rougher concentrate in the phosphate flotation is the apatite mixture that is floated with a fatty acid collector and that still contains more than 10% silica. The flotation …
Similarly, a study on the flotation of apatite from siliceous-calcareous phosphate ore proved that the mixed of 10% of nonionic ethoxylated nonylphenol EP-4 surfactant with …
