carbonate depression in flotation
2022-05-04T17:05:40+00:00
Investigation of the depressants involved in the selective
2019年6月15日 The efficiency of the sodium carbonate/sodium silicate combination was limited (maximum WO 3 enrichment ratio = 1648) due to the lack of selectivity of the depressants The proposed optimization of the flotation separation of scheelite from 2017年8月1日 The flotation experiments and contact angle measurements indicated that the selective depression effect of sodium carbonate on the calcite mineral is more than Effects of sodium carbonate and calcium chloride on calcite depression 2017年8月1日 In addition, sodium carbonate acts as activator agent for pyrolusite, and increases its floatability The flotation experiments and contact angle measurements Effects of sodium carbonate and calcium chloride on calcite depression
Flotation separation of carbonate from sulfide minerals, I: flotation
2004年7月1日 Reverse flotation of carbonate minerals from refractory goldbearing sulfide ores requires the flotation of the carbonate minerals (calcite, dolomite, siderite, etc) while As carbonate minerals, smithsonite and calcite have similar surface properties, and unavoidable ions will further narrow the difference in their floatability The results Enhanced flotation of smithsonite from calcite based on the 2022年7月1日 Direct calcite flotation is mostly considered when carbonatites are the main host of valuable minerals (such as pyrochlore) Sodium oleate is the typical collector for Calcite in froth flotation A review ScienceDirect
Role of sodium carbonate in scheelite flotation – A multi
2018年12月1日 The selective depression behavior and adsorption mechanism of ATMP on the two minerals were explored by a serie of experiments and surface analyses The 2014年1月31日 Depressants for calcite have been widely reported in previous studies [12, [18] [19] [20], and aluminum silicate solutions (AlSiO 3 ) have been proven to be A novel method to improve depressants actions on calcite flotation 2004年7月1日 Solution chemistry, zeta potential and Fourier transform infrared spectroscopic measurements were performed to study the mechanisms of selective Flotation separation of carbonate from sulfide minerals, II:
Flotation separation of carbonate from sulfide minerals, II:
2004年7月1日 Solution chemistry, zeta potential and Fourier transform infrared spectroscopic measurements were performed to study the mechanisms of selective 2023年5月1日 In this study, the innovative use of ethylenediamine tetramethylene phosphonic sodium (EDTMPS) as a calcite depressant in scheelite flotation was investigated by flotation experiments, and its selective depression mechanism was revealed by contact angle measurement, FTIR analysis, Zeta potential test and XPS analysisApplication of EDTMPS as a novel calcite depressant in scheelite flotation2021年5月8日 The depletion of ore deposits, the increasing demand for raw materials, the need to process lowgrade, complex and finely disseminated ores, and the reprocessing of tailings are challenges Impact of Sodium Hexametaphosphate on the
Comparative studies of two cationic collectors in the flotation
2017年10月10日 The flotation results and contact angle measurements show that sodium carbonate depresses the calcite flotation more effectively than calcium chloride • By carrying out the froth flotation on the tabling preconcentrate using DDA collector and sodium carbonate as a depressant agent, a favorite pyrolusite concentrate can be achieved2021年3月18日 Separation effects of sodium polyacrylate (PAAS) and gum Arabic (GA) on flotation of chalcopyrite and magnesium silicate minerals using potassium butyl xanthate (PBX) as collector were Enhancing flotation separation of chalcopyrite and 2022年11月22日 Flotation separation depressants for scheelite and calciumbearing minerals: A review Ziming Wang 1, 2 , Bo Feng 1, 2 , , and Yuangan Chen 1, 2 + Author Affiliations Bo Feng is a youth editorial board member for this journal and was not involved in the editorial review or the decision to publish this articleFlotation separation depressants for scheelite and calcium
Surface dissolution of spodumene and its role in the flotation
2018年8月15日 The effect of dissolution pretreatment of spodumene using NaOH and Na 2 CO 3 was investigated by microflotation test, contact angle measurement, XPS, ICP and AFM imaging The results showed that NaOH treatment activated the spodumene flotation whilst Na 2 CO 3 showed little depression effect NaOH had more significant activating 2021年3月1日 The depression of apatitic minerals and the flotation of carbonate minerals in the reverse anionic flotation method at acidic pH values are certainly due to the selective surface passivation of these apatitic minerals by a newly formed layer calcium phosphate or carbonate species which may prevent apatite dissolution and adsorption of Insitu study of the kinetics of phosphoric acid interaction The literature analysis showed that while talc depression through flotation is extensively studied, insufficient attention is paid to its flotation kinetics and application of column flotation The role of calcium and carbonate ions in the separation of pyrite and talc Miner Eng 2018, 119, 205–211 [Google Scholar] Fuerstenau, MC Minerals Free FullText Talc Flotation—An Overview MDPI
A novel method to improve depressants actions on calcite flotation
2014年1月1日 The depression impacts of HEDP on the flotation behaviors of the two minerals were investigated through microflotation tests The flotation results indicated that, when sodium oleate (NaOl) was used as the collector, HEDP displayed an outstanding depression effect on the dolomite flotation, whereas it had only a slight influence on the 2017年8月1日 The maximum depression of calcite flotation occurs using 10×10−4 mol/L sodium carbonate at a pH of 75 where the flotation recovery of calcite decreases from 572% to 137% An important point that should be noted is that the sodium carbonate acts as an activator agent and improves the flotation recovery of pyrolusite in all pH Effects of sodium carbonate and calcium chloride on calcite depression 2022年11月1日 The presence of carbonate minerals increases acid depletion and production costs Using ammonium sulfate as a sulfidization accelerator can activate malachite flotation, and the depression caused by excess sodium sulfide is weakened in the presence of ammonium sulfate Xray photoelectron spectroscopy analysis shows that in Flotation of copper oxide minerals: A review ScienceDirect
Investigation of the depressants involved in the selective flotation
2019年6月15日 Thus, sodium carbonate is commonly used in flotation as a pH modifier [57] Moreover, its addition prior to sodium silicate produced positive synergistic effects on gangue mineral depression [5, 21, 23, 26, 58] In this study, this combination afforded the best results over all the tested depressants2006年5月1日 Conclusions The addition of lime to increase the pH to 95 in the absence of the addition of any other zinc depressants was effective in reducing marmatite flotation This was thought to be due to the formation of a thin film of lime on the surface of the marmatite The addition of zinc sulphate resulted in marmatite depression and increased Marmatite depression in galena flotation ScienceDirect2004年7月1日 Not only the dosages required for pyrite depression were significantly reduced, but the mixed depressant also depressed chalcopyrite, without affecting the flotation of the carbonate minerals 4 Using the mixed depressant, the carbonate minerals could be selectively floated from carbonate–sulfide mineral mixturesFlotation separation of carbonate from sulfide minerals, I: flotation
Differential flotation of pyrite and arsenopyrite: Effect of
2021年3月15日 Acknowledging the complex nature of the flotation process and separation of identical minerals, a mechanism for the depression of arsenopyrite in the presence of relatively low concentration of hydrogen peroxide is proposed with schematic representation in Fig 12 Adsorption of the collector on pyrite occurs as dixanthogen whereas on the 2022年3月22日 Flotation feed and the test products (ie, concentrates and tailings) were dried in an oven at 60 °C and analyzed for Pb and Zn contents by complexometric titration with EDTA as titrant and xylenol orange as indicator [14, 34]The procedure includes digestion of 1 g solid sample in a 250ml glass beaker by 15 ml of concentrated HCI and A Process Mineralogy Approach to the Flotation of Complex 2021年8月14日 The paper is about the froth flotation process and its application It is a metallurgical process for the extraction of metals in a pure state from their ores: especially for sulfide ores Froth (PDF) Froth flotation process and its application ResearchGate
Minerals Free FullText The Potential Role of Colloidal
2020年1月22日 The main challenge in scheelite flotation lies in the contamination of the concentrate by other calciumbearing minerals, mainly calcite To remedy this problem, sodium silicate is frequently used as a depressant According to the literature, one hypothesis for the mechanism of water glass consists in its absorption onto calcite 2018年6月1日 Effect of ZnSO 4 and SDD dosage In the case of the combined use of ZnSO 4 and SDD, the dosage has a significant influence on the depression performance of sphalerite in the mixed CuZn sulfide flotation system Thus, the dosage of ZnSO 4 and SDD was firstly investigated in the present study, with the results shown in Figs 2 (a) and 3 (a)Use of ZnSO4 and SDD mixture as sphalerite depressant in copper flotation2018年8月15日 The first flotation separation for the rejection of magnesite was reported by Doerner and Dwigh (1930s) []Flotation of Mg carbonates is typically carried out by using fatty acids, since these collectors give insoluble complexes with all divalent cations []Determination of the appropriate depressing reagents for sinking valuable minerals in Minerals Free FullText A Review of Flotation Separation of
Recovery of pyrochlore from slimes discarded at Niobec by column flotation
2016年6月16日 The Niobec concentrator recovers niobium minerals (principally pyrochlore) from carbonate and silicate gangue In the process some 15% of the Nb is rejected in a slimes ( −10 mum) product Recovery of pyrochlore from the slimes was studied The study was performed using plant water which contained about 200 ppm Ca, 100 ppm Mg and 2022年9月21日 Sodium thiosulfate flotation showed that the depression for chalcopyrite is much larger than for molybdenite However, after adding Cu 2+ ions (3 × 10 −5 mol/L), there was an optimal selective separation of these minerals, where the floatability difference reached 749 (499% in the absence of Cu 2+) Zeta potential measurements illustrated Froth Flotation of Chalcopyrite/Pyrite Ore: A Critical Review2018年9月1日 To improve the flotation separation efficiency of smithsonite from quartz using N,N′dilauroyl ethylenediamine dipropionate (DNET) as a collector, sodium carbonate was used as a regulator Singlemineral flotation results indicated that more than 9736% of smithsonite was floated when DNET was used as a collector at a concentration of 200 Sodium carbonate effects on the flotation separation of
Critical importance of pH and collector type on the flotation
2021年2月4日 Collector type and pulp pH play an important role in the lead–zinc ore flotation process In the current study, the effect of pulp pH and the collector type parameters on the galena and 2021年6月22日 Abstract and Figures Talc is a naturally hydrophobic gangue mineral in most sulfide ores However, talc has vast applications in the cosmetics, paper, and paint industries due to its high (PDF) Talc FlotationAn Overview ResearchGate2017年8月1日 The flotation experiments and contact angle measurements indicated that the selective depression effect of sodium carbonate on the calcite mineral is more than that of calcium chloride As evidenced by zeta potential and FTIR analysis, sodium carbonate decreases the negative charges on the surface of calcite mineral and subsequently Effects of sodium carbonate and calcium chloride on calcite depression
Flotation study of fine grained carbonaceous ScienceDirect
2018年6月1日 The flotation beneficiation of apatite for phosphate production is challenging for finely disseminated sedimentary ores rich in carbonates Similarities in surface properties of the semisoluble salttype carbonate and phosphate calcium minerals combined with fine intergrowth are the main reasons for poor grade and low recoveries Imperfect The first flotation separation for the rejection of magnesite was reported by Doerner and Dwigh (1930s) []Flotation of Mg carbonates is typically carried out by using fatty acids, since these collectors give insoluble complexes with all divalent cations []Determination of the appropriate depressing reagents for sinking valuable minerals in the presence of Minerals Free FullText A Review of Flotation Separation of Provided by the Springer Nature SharedIt contentsharing initiative This paper presents both the fundamentals of sulphide mineral flotation and the practical aspects of sulphide ore flotation The fundamental aspects of the flotation of sulphide minerals both in the absence and presence of thiol collectors are discussed in relationPrinciples and practice of sulphide mineral flotation
Study on the depression mechanism of calcium on the flotation
2021年1月1日 The presence of Ca 2+ / Mg 2+ could affect the surface potential of minerals during the flotation process Still, the adsorption mechanism of these ions on specific crystal planes has yet to be fully understood The surface potential of the scheelite (112) and (001) surfaces, under the effect of Ca 2+ /Mg 2+ at pH 8 and 11, were determined by fitting 2019年4月25日 The depression of apatite can be achieved by adjusting the pH of pulp because the flotation behavior barely occurred at pH below 45 in an an io nic flotation of apatite without the addition of (PDF) Review on Beneficiation Techniques and 2022年7月28日 As an important strategic nonmetallic mineral resource, fluorite has been widely used in various industrial fields, such as metallurgy, optics and semiconductor manufacturing, as well as fluorinerelated chemical engineering Since the major gangue minerals of fluorite ore are silicate and carbonate ones, flotation is the main beneficiation Difficulties and Recent Achievements in Flotation Separation
Optimal Depressants and Collector Dosage in
Alternative processes have been proposed for selective separation of fluorite and gangue minerals (carbonates and silicates) present in fluorspar ores Calcination and gravity separation processes are methods that have low As carbonate minerals, smithsonite and calcite have similar surface properties, and unavoidable ions will further narrow the difference in their floatability The results showed that CBC exhibited selective depression effect on calcite flotation and was beneficial to improve the recovery efficiency of smithsonite 313 Effect of Zn(II Enhanced flotation of smithsonite from calcite based on the 2022年8月13日 the direct flotation method, carbonate minerals can be depressed by aromatic sulfonate polymers, hydrofluoric acid, citric acid, gum Arabic, sodium silicate and so on [12,15,17–18] In the reverse flotation system, apatite can be flotation, its selective depression of dolomite in apatite flotation system is rarely studied The purpose Mechanism of calcium lignosulfonate in apatite and
Use of ZnSO4 and SDD mixture as sphalerite depressant in copper flotation
2018年6月1日 The optimum conditions for flotation separation of chalcopyrite from the CuZn sulfide were as follows: combined depressant dosage of 10⁻⁴ mol/L (ZnSO4: SDD = 3:1), BX dosage of 10⁻⁵ mol/L 2015年7月28日 This study provides an up to date review of tannins, specifically quebracho, in mineral processing and metallurgical processes Quebracho is a highly useful reagent in many flotation applications, acting as both a depressant and a dispersant Three different types of quebracho are mentioned in this study; quebracho “S” or Tupasol ATO, Tannins in Mineral Processing and Extractive Metallurgy2022年6月30日 In coal flotation, increased concentration of hydroxide forming cations, such as Ca 2+, Fe 2+, Fe 3+, and Al 3+, that form a passive film on particle surfaces can lead to depression of coal (Celik Somasundaran, 1986) Similar effects can be expected in the flotation of flake graphite which could be extrapolated to anode graphiteJoint recovery of graphite and lithium metal oxides from
Study on the depression mechanism of zinc sulfate on talc in
2021年6月20日 Zinc sulfate is a commonly used selective depressant for zinc sulfide minerals, and a mixture of ZnSO 4 and Na 2 CO 3 is an effective combined inhibitor for talc This study indicated that only using ZnSO 4 could inhibit talc in chalcopyrite flotation and its depression mechanism was investigated Microflotation tests indicated that ZnSO 4 could 2019年7月1日 The flotation of sulphides and sulphidised oxides must be done separately as reagents used for sulphidisation of the oxide minerals will cause depression of sulphide minerals (Lee et al, 2009) Sulphidisation consists of activation of the oxidised surface using a sulphidising agent which releases sulphur ions in the solution by hydrolysisFlotation of mixed oxide sulphide coppercobalt2023年5月1日 In this study, the innovative use of ethylenediamine tetramethylene phosphonic sodium (EDTMPS) as a calcite depressant in scheelite flotation was investigated by flotation experiments, and its selective depression mechanism was revealed by contact angle measurement, FTIR analysis, Zeta potential test and XPS analysisApplication of EDTMPS as a novel calcite depressant in scheelite flotation
Impact of Sodium Hexametaphosphate on the
2021年5月8日 The depletion of ore deposits, the increasing demand for raw materials, the need to process lowgrade, complex and finely disseminated ores, and the reprocessing of tailings are challenges 2017年10月10日 The flotation results and contact angle measurements show that sodium carbonate depresses the calcite flotation more effectively than calcium chloride • By carrying out the froth flotation on the tabling preconcentrate using DDA collector and sodium carbonate as a depressant agent, a favorite pyrolusite concentrate can be parative studies of two cationic collectors in the flotation 2021年3月18日 Separation effects of sodium polyacrylate (PAAS) and gum Arabic (GA) on flotation of chalcopyrite and magnesium silicate minerals using potassium butyl xanthate (PBX) as collector were Enhancing flotation separation of chalcopyrite and
Flotation separation depressants for scheelite and calcium
2022年11月22日 Flotation separation depressants for scheelite and calciumbearing minerals: A review Ziming Wang 1, 2 , Bo Feng 1, 2 , , and Yuangan Chen 1, 2 + Author Affiliations Bo Feng is a youth editorial board member for this journal and was not involved in the editorial review or the decision to publish this article2018年8月15日 The effect of dissolution pretreatment of spodumene using NaOH and Na 2 CO 3 was investigated by microflotation test, contact angle measurement, XPS, ICP and AFM imaging The results showed that NaOH treatment activated the spodumene flotation whilst Na 2 CO 3 showed little depression effect NaOH had more significant activating Surface dissolution of spodumene and its role in the flotation 2021年3月1日 The depression of apatitic minerals and the flotation of carbonate minerals in the reverse anionic flotation method at acidic pH values are certainly due to the selective surface passivation of these apatitic minerals by a newly formed layer calcium phosphate or carbonate species which may prevent apatite dissolution and adsorption of Insitu study of the kinetics of phosphoric acid interaction
Minerals Free FullText Talc Flotation—An Overview MDPI
The literature analysis showed that while talc depression through flotation is extensively studied, insufficient attention is paid to its flotation kinetics and application of column flotation The role of calcium and carbonate ions in the separation of pyrite and talc Miner Eng 2018, 119, 205–211 [Google Scholar] Fuerstenau, MC 2014年1月1日 The depression impacts of HEDP on the flotation behaviors of the two minerals were investigated through microflotation tests The flotation results indicated that, when sodium oleate (NaOl) was used as the collector, HEDP displayed an outstanding depression effect on the dolomite flotation, whereas it had only a slight influence on the A novel method to improve depressants actions on calcite flotation 2017年8月1日 The maximum depression of calcite flotation occurs using 10×10−4 mol/L sodium carbonate at a pH of 75 where the flotation recovery of calcite decreases from 572% to 137% An important point that should be noted is that the sodium carbonate acts as an activator agent and improves the flotation recovery of pyrolusite in all pH Effects of sodium carbonate and calcium chloride on calcite depression