direct flotation hematite silisicous gangue
Review and analysis of factors controlling the mechanical flotation …
Mechanical flotation of gangue minerals is reviewed. First, mechanisms that contribute to gangue transportation are considered. The effect of water recovery and other essential factors on gangue recovery is described, and mathematical models for classification and entrainment of gangue are presented. ... The coarse fractions showed …
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INFLUENCE OF SODIUM SILICATE ON FLOATABILITY AND CHARGE OF HEMATITE …
Due to its low cost compared with hydroxamate and sulphonate, sodium oleate is employed in direct flotation of low-grade or waste iron ore. However, depressants are being studied. This work shows the influence of the depressant sodium silicate on hematite and quartz flotation with sodium oleate as a collector. Microflotation tests were performed in …
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FLOTATION CHEMISTRY OF HEMATITE/OLEATE …
tor leaving siliceous gangue, usually quartz, in the tailings. Kick et al. [1] were among the first to investigate the utility of various collectors in hematite flotation from quartz. In their extensive study, they concluded that fatty acids and their soaps are superior collectors for hematite flotation and among
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flottation selective direct. SEPARATING DOLOMITE FROM PHOSPHATE ROCK BY. Use of depressants in the direct flotation of a silie.In this study conducted in a laboratory scale eight
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(PDF) Flotation of Iron Ores: A Review
The advantages and disadvantages of direct flotation, cationic reverse flotation, and anionic reverse flotation are reviewed. A novel stepped flotation technique is discussed for the treatment of ...
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Flotation of silicated gangue iron ores: Mechanism and …
The study illustrates the first ever use of Aliquat-336 (C 25 H 54 ClN), an ionic liquid, in the flotation separation of quartz from hematite. Laboratory flotation studies of hematite, quartz and their synthetic mixture have shown selective collecting action of Aliquat-336 toward quartz.
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Process Mineralogy Characteristics and Flotation …
Some coarse-grained fluorapatite in desilication tailings was rich in siliceous gangue minerals. Furthermore, some fine-grained apatite was closely associated with siliceous minerals, making the …
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Separation of ultra-fine hematite and quartz particles using
For example, in direct flotation, the mechanical entrainment of the hydrophilic minerals lowers the grade of froth product. But in reverse flotation, the mechanical entrainment of the hydrophilic mineral lowers its recovery. ... Starch and PEO were used as selective flocculants for hematite and quartz gangue, respectively. …
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Key technologies and development trends for efficient …
Lepidolite flotation depressants target common calcareous and siliceous gangue minerals, including inorganic depressants such as water glass and sodium …
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Surface modification of ilmenite and its accompanied gangue …
These methods are not able to separate fine ilmenites effectively from the gangue minerals. The froth flotation can be an effective method for beneficiation of these kinds of ilmenites [4âˆ'13]. ... An infrared study of the flotation of hematite with oleic acid and sodium oleate [J]. Transactions of the American Institute of Mining and ...
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CHAPTER-9 FROTH FLOTATION AND ITS APPLICATION …
surface of either the iron oxide or the principal gangue component, normally silica, so that these particles attach themselves to the air bubbles and are carried to the surface, where they are removed as a froth. Flotation of iron ores can be done in two ways, 'direct' or 'reverse'. In the former, iron oxide is floated.
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Review of the reagents used in the direct flotation of …
Low-grade phosphate ores with high concentration of gangue minerals are becoming the alternative source for phosphorus. However, the presence of calcareous-siliceous …
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Flotation of Quartz and Hematite: Adsorption …
The flotation test led to a partial flotation of quartz into the froth products, reducing the grade of hematite direct flotation concentrate, which is consistent with industrial production. View ...
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Selective flotation of phosphatic ores having a siliceous …
However, only the anionic pole was used in the direct flotation of igneous apatite. This method has been applied to many types of sedimentary deposit. In view of the encouraging preliminary results, a patent has been lodged by Blazy et al. (1981) and this article will attempt, as far as possible, to compare the results obtained with those ...
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Entrainment of Gangue Minerals in Froth Flotation
the gangue minerals are hydrophilic unless stated otherwise. Complete separation of value minerals from gangue min-erals is not always possible when using froth flotation [1], especially for fine and ultrafine minerals due to the mechani-cal transportation of hydrophilic gangue minerals by the floated water.
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Reverse flotation separation of hematite from quartz …
The purities of hematite, quartz, and magnetite were 97.3%, 99.4%, and 93.8%, respectively. Elemental compositions of minerals are shown in Table 1.Total iron and ferrous iron contents were determined with the standard titrimetric method using potassium dichromate as titrant after reduction of the iron (III) by tin (II) chloride and/or …
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Studies in the selective flocculation of hematite from gangue …
Figure 4 illustrate the ideal for both such plots. Basing consideration on the recovery of hematite, ideally flocs of it will settle before any gangue so the ideal situation is represented by AD with D cor- responding to the complete recovery of hematite before any silica has settled and the "recovery" refers to that of hematite.
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(PDF) Investigation of Silica Removal from Hematite …
PDF | On Jan 1, 2015, Arash Tohry published Investigation of Silica Removal from Hematite Concentrate of Chador-Malu Flotation Circuit | Find, read and cite all the research you need on ResearchGate
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Mechanism for the recovery of silicate gangue minerals in …
Silica recovery as a function of water recovery in the absence (♦) and presence of copper sulphate (1800 g/t) + isopropyl xanthate (1500 g/t) (♢). Samples …
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Pyrochlore flotation from silicate gangue minerals: Amine adsorption
Small scale flotation studies (or micro flotation) are a common and efficient method of testing flotation reagents on simplified mineral systems. This method of testing has been used in pyrochlore flotation research (Espinosa-Gomez, 1989, Rao et al., 1988, Ni et al., 2012) and extensively in oxide mineral flotation in general.
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A study of flotation characteristics of monazite, hematite, and …
The effect of increasing the dosage ofon the flotation recovery of monazite, hematite, and quartz at pH 7 was also investigated (Fig. 11). The flotation recovery of monazite, hematite, and quartz increased with increasing dosage of AH. However, the difference in recovery of monazite and hematite was marginal at…
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Flotation of phosphatic material containing carbonatic gangue …
International Journal of Mineral Processing, 26 (1989) 123-140 123 Elsevier Science Publishers B.V., Amsterdam -- Printed in The Netherlands Flotation of Phosphatic Material Containing Carbonatic Gangue Using Sodium Oleate as Collector and Sodium Silicate as Modifier K. HANUMANTHA RAO, BRITT-MARIE ANTTI and …
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Studies in the selective flocculation of hematite from gangue …
The importance of matching particle sizes of mineral and gangue is further emphasised by Fig. 11. This is a result from one of the many early attempts at selective flocculation. A 50% hematite--50% silica feed was used but with some coarse silica particles compared with the hematite particle size.
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On the Management of Gangue Minerals in the …
flotation of PGMs, there are significant challenges arising from the need to treat ever-decreasing grades of the relevant ore deposits. The major challenge in the flotation of these ore bodies is the control and management of the gangue minerals,
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A Critical Review on the Flotation Reagents for Phosphate …
Wang Qun and K. Heiskanen reported that apatite could be enriched from siliceous phosphate ores using fatty acids with sodium silicate as a depressant in direct …
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Influence of microwave irradiation on ilmenite flotation behavior …
The effect of a combination of microwave irradiation and activation by Pb(NO 3) 2 on the flotation of ilmenite and gangue minerals is presented in Fig. 9. ... An infrared study of the flotation of hematite with oleic acid and sodium oleate. Trans. Am. Inst. Min., 235 (1966), pp. 301-307. View in Scopus Google Scholar [51]
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Flotation of silicates gangue from hematite containing …
Thus, the hematite concentrates with weak silica content and satisfactory iron recovery were obtained by reverse cationic flotation, when it was fed with iron pre-concentrate …
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Three-phase froth stability in hematite flotation using DDA …
In hematite or quartz flotation using DDA as a collector, the active ion C 12 H 28 N + would be enriched on the surface of hematite and quartz, forming a layer of positively charged surface, meanwhile the counter ions (CH 3 COO −) were distributed at the interface, forming a surface double electric layer. When the liquid film became …
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Effect of platy gangue minerals in sulfide flotation: Part I …
1. Introduction. In the beneficiation of sulfide minerals from their ores by froth flotation, the non-sulfide gangue (NSG) minerals are predominantly silicates (Edwards et al., 1980, Firth and Nicol, 1981, Arnold and Aplan, 1986, Bremmell et al., 2005, Tabatabaei et al., 2014, Burdukova et al., 2008).A sub-class of the silicates is the phyllosilicate …
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Influence of microwave irradiation on ilmenite flotation behavior …
In a general result, in the flotation of ilmenite from different gangue minerals, the separation efficiency and selectivity index have a negative correlation with the iron content of gangue minerals. ... ilmenite–hematite, and (c) ilmenite–rutile [4]. The conventional methods used in the processing of ilmenite ores are gravity separation ...
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