xanthates for zinc flotation

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Effect of Copper Sulfate on Zinc Sphalerite Flotation - 911 Metallurgist

Mar 18, 2017 ... As an example of the beneficial effect of copper sulfate in the activation of zinc sphalerite toward flotation, the series of results shown in Fig. ... contained about 5.6% zinc as marmatite; and was treated in a circuit made alkaline with lime, using pine oil as a frother and, potassium amyl xanthate as a collector.

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Galena - Sphalerite Flotation & Separation Method - 911 Metallurgist

If a pyrite concentrate is required, this can usually be obtained by sending the tailing of the zinc flotation section direct to a third stage, where the iron sulphides are floated with the addition of 0.05-0.15 lb. per ton of pine oil and 0.1-0.2 lb. of ethyl and/or amyl xanthates, the latter reagent being...

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lead and zinc ores: flotation - Semantic Scholar

tween sulfurized and oxidized minerals as regards their separation by flotation. It is easy to recover Zn from sphalerite and Pb from galena even using xanthate collectors but it is not the same for Zn from smithsonite (Zn CO3) and Pb from cerussite. (PbCO3). Flotation of Zn and Pb oxidized minerals is dif- ficult because there...

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The role of zinc-xanthate precipitation in sphalerite flotation ...

Flotation of sphalerite with ethyl, propyl, butyl, amyl, and hexyl xanthate is presented as a function of pH and concentration. Surface species have been identified with infrared spectroscopy and correlated with flotation and electrophoretic results. Flotation is postulated to be controlled by the formation and adsorption of bulk...

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THE ROLE OF ZINC-XANTHATE PRECIPITATION IN SPHALERITE ...

Flotation of sphalerite with ethyl, propyl, butyl, amyl, and hexyl xanthate is presented as a function of pH and concentration. Surface species have been identified with infrared spectroscopy and correlated with flotation and electrophoretic results. Flotation is postu- lated to be controlled by the formation and adsorption of bulk...

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Use of AEROPHINE® 3418A Promoter in the Flotation of Complex ...

of Complex Lead, Copper and Zinc Minerals with High ... When AEROPHINE 3418A promoter replaces xanthate, use ... Zinc Flotation. Zinc is floated after the lead-copper minerals have been recovered through selective collectors. If a xanthate is used as the primary collector instead of AEROPHINE 3418A promoter, the iron...

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Froth Flotation - Department of Chemical Engineering

A classic example of an activator is copper sulfate as an activator for sphalerite (ZnS) flotation with xanthate collectors (Fuerstenau et al., 1985). When untreated, xanthate cannot attach to the sphalerite surface because it forms a zinc-xanthate compound that quickly dissolves: ZnS(s) + Xanthate. - → S(s) + ZnXanthate (aq).

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Copper-Lead-Zinc ores - Danafloat

As described in the lead-zinc ore processing section, zinc sulphate and metabisulphide sphalerite and pyrite depressants, respectively, are typically added to grinding. Then a Cu-Pb bulk concentrate is recovered with xanthate, dithiophosphate and flotation reagent blends. Collector selection in the bulk flotation step must...

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Lead-Zinc ores - Danafloat

Lead-Zinc ores. Flotation separation and recovery of lead and zinc concentrates from ores containing galena (PbS) and sphalerite (ZnS) is well established and generally achieved quite ... Optimum lead concentrate metallurgy and recoveries are usually achieved using a combination of a xanthate and dithiophosphates.

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Bulk Flotation of Low Grade Refractory Sulfide Lead-Zinc Ore

to the problems involving sequential flotation of finely disseminated lead-zinc sulfide ore, the production of bulk lead-zinc concentrate was practiced. Flotation parameters such as activator (CuSO4) dosage, collector type [potassium amyl xanthate, sodium isopropyl xanthate] and dosage, flotation time, particle size and pH...

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Flotation Reagents - suppliers, manufacturers, exporters

AMULGUM-P-10-D is used as a selective frother which increase grades & recovery of lead, zinc, copper, gold, iron of Sulphide (pyrites) ores in froth flotation ... Application:Potassium ethyl xanthate is a collector with better selectivity, widely applied in flotation of Cu/Zn/Ne and pyrite, especially for the gold floatation in gold...

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The Desulfurization of Magnetite Ore by Flotation with a ... - MDPI

Jul 8, 2016 ... (sodium xanthate) was also reported to be effective for the flotation of zinc oxide at pH 11 [14]. In this study, attempts were made to enhance the selective separation of pyrrhotite from magnetite. Flotation experiments were conducted with different collector suits (xanthate, dixanthogen, and their mixture).

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Electrochemistry of Copper Activation of Sphalerite and Potassium ...

the critical pH values for galena flotation with amyl xanthate but not with ethyl xanthate. There are several explanations for the relatively weak interaction between galena and short chain xanthate. Some suggested that zinc xanthate is so soluble that it would dissolve from the mineral surface, while others suggested that.

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Kinetic Studies of Sulfide Mineral Oxidation and Xanthate Adsorption

Sulfide minerals are a major source of metals; however, certain sulfide minerals, such as pyrite and pyrrhotite, are less desirable. Froth flotation is a commonly used separation technique, which requires the use of several reagents to float and depress different sulfide minerals. Xanthate, a thiol collector, has gained immense...

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Collectors - Moly-Cop

Product Range. Sodium Isopropyl Xanthate (MC-CIPXS). It is one of the most commonly used products in the flotation of sulfide minerals such as copper, molybdenum and zinc. Presents good behavior between recovery/selectivity and cost. Sodium Isopropyl Ethyl Thionocarbamate (MC-CIET). Is an extremely selective and...

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Physicochemical studies of oxide zinc mineral flotation - DiVA portal

Adsorption Studies of Smithsonite Flotation Using Dodecylamine and Oleic acid. S. Hamid Hosseini and Eric Forssberg. Minerals and Metallurgical Processing, SME, Vol.23, No.2, 2006, 87-96. Paper II. Smithsonite Flotation Using Potassium Amyl Xanthate and Hexylmercaptan. S. Hamid Hosseini and Eric Forssberg.

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Chemical optimisation and sustainability in flotation - InfoMine

Aug 2, 2009 ... conventional flowsheet of copper flotation followed by copper sulphate activation and zinc flotation. After successful laboratory tests,. AEROPHINE 3418A was introduced for a full- scale, ten-day, plant trial. The standard mill promoter and frother were sodium amyl xanthate and MIBC, respectively. Figure 3...

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What is the importance of froth flotation in relation to the ...

In froth flotation process, powdered ore is mixed with water; followed by the addition of substances called collectors and froth stabilizers. The objective of adding collectors (Pine oil, fatty acids, xanthates, etc.) is to enhance the property of...

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Studies of activation of Galena by copper and xanthate (PIPX)

measure the critical pH values for galena flotation with amyl xanthate but not with ethyl xanthate. There are several explanations for the relatively weak interaction between galena and short chain xanthate. Klassen and Mokrousov [4] suggested that zinc xanthate is so soluble that they would dissolve from the mineral...

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Surface stoichiometry of zinc sulfide and its effect on the adsorption ...

Nov 24, 2011 ... The surface complexation of zinc sulfide in relation to mineral flotation was studied [24-27] and some surface reaction constants were reported. Xanthate having the structure ROC(= S)S-M+ (R = alkyl; M+ = Na+, K+) is a type of collector widely used in sulfide mineral floatation. The uses of xanthate as...

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studies on the synthesis and characterisation of zinc alkyl xanthates

such as gold, copper, lead. Also, they are used for separating zinc minerals. (often referred to as “values”), from non-valuable minerals, such as lime stone or quartz.252-257 To extract values, conditioned ores are mixed in a solution of water and xanthates and then agitated in flotation cells. Xanthates may be added...

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Enhanced sulfidation xanthate flotation of malachite using ... - Nature

May 18, 2017 ... Therefore, the two characteristics can be used in the sulfidation xanthate flotation of malachite, and a small amount of ammonium ion can be added to expose the malachite flotation surface to ..... Keqing, F. A., Miller, J. D. & Li, G. H. Sulphidization flotation for recovery of lead and zinc from oxide-sulfide ores.

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FLOMIN: Mining Reagents - SNF Holding Company

Zinc dithiophosphate. Collectors and Promoters. Xanthates. SNF Flomin C products are widely used for the flotation of. Xanthates provide a wide range of collection power, copper, lead, zinc, gold, nickel, platinum group elements enabling the flotation metallurgist to cope with practically and others. Although the base line of...

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The effect of mode of occurrence of galena and sphalerite on the ...

sample. The Rosh Pinah composite sample is processed by selective flotation, in which galena is floated first with sodium propyl xanthate (SNPX) as collector, while sphalerite and pyrite are depressed with cyanide. The sphalerite is floated further with xanthate in the zinc flotation circuit after activation with copper sulphate.

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Action selectivity of consecutive use of collectors during flotation of ...

Abstract: Today selective flotation of copper-zinc-pyrite ores at deterioration of the technological properties of raw material is one of the most important problem. The solution of this problem involves the use of more selective collectors combined with the main reagent-collector - xanthate. The article presents the study results...

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Oxidized zinc ore, Dodecylamine, Oleic acid, KAX, Mercaptan ...

Abstract In this study, the flotation of oxidized zinc ore from Angooran ore in the presence of cationic collector such as dodecylamine (DDA), anionic collectors such as oleic acid (OA), potassium amyl xanthate (KAX), hexyl mercaptan (HM) and mixed collector (cationic/anionic) was investigated. The parameters of the...

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FROTH FLOTATION- SWAPNIL NIGAM - SlideShare

Oct 28, 2011 ... The reaction proceeds as, </li></ul></ul></ul>ZnS(s) CuSO 4 Cu S(s) Zn SO 4 <ul><ul><ul><li>The Copper Sulphide film on the mineral surface now allows a stable and easy flotation of the Sphalerite ore by the Xanthate collector, as the Copper Xanthate compound so formed is insoluble in water.

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Dissolved-Air Flotation of Metal Ions - CiteSeerX

Abstract. Metal ions (copper, nickel, zinc, and ferric ions) were separated from dilute aqueous solutions by dissolved-air flotation. The ions were either precipitated as sulfides or floated (as ions) by xanthates. Copper and nickel were selectively sep- arated; promising results were obtained with single, binary, and ternary...

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optimisation of the selective flotation of galena and sphalerite at rosh ...

Feb 18, 2005 ... A study was carried out to improve the flotation selectivity between galena and sphalerite during the flotation of a Cu-Pb-Zn sulphide composite ore from the Rosh. Pinah Mine (Namibia). Xanthate collectors were found to be unselective for the flotation of the Rosh Pinah composite sample. It was observed...

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selective flotation of galena and sphalerite at rosh pinah mine

activate the sphalerite in the zinc flotation circuit. Thus, an understanding of the ... In Cu-Pb-Zn flotation plant practice cyanide is usually added to depress the flotation of copper-activated sphalerite prior to copper ... combines with surface metal ions to prevent the formation of metal-xanthates;. • Cyanide reduces the redox...

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Flotation of Sulphide Ores - HZL Experience - Eprints@NML

day lead-zinc mine at Zawar, HZL has expanded its mining capacity to .... integration of different beneficiation techniques besides conventional flotation. FLOTATION PROCESS. Flotation is a method of separating an ore species froth another, based .... activated sphalerite and can react with iron and zinc xanthate to form.

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surface analytical studies of oxidation and collector ... - eCM Journal

molecules (e.g., xanthate, dithiophosphinates) have been identified in ... In this review, we will focus on the use of scanning and imaging surface analytical techniques applied to the study of sulfide surfaces in flotation. In this context, it is useful to identify some of ..... dissolution of zinc occurs with the formation of a metal-.

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Copper-Zinc-Lead Separation Process | Evita Lee | Pulse | LinkedIn

Jan 4, 2017 ... As described in the lead-zinc ore processing section, zinc sulphate and metabisulphide sphalerite and pyrite depressants, respectively, are typically added to grinding. Then a Cu-Pb bulk concentrate is recovered with xanthate, dithiophosphate and flotation reagent blends. Collector selection in the bulk...

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Review on environmental risk assessment of mining chemicals used ...

Sodium xanthates have both a hydrocarbon chain and a polar group, and their selectivity to ore type decreases with increasing length of the hydrocarbon chain. Of the sodium xanthates, sodium ethyl xanthate has the shortest chain, which makes it highly selective to copper, nickel, lead, gold and zinc ores. In the flotation...

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Amruta Industries | Xanthate | Mining | Froth Floatation |

Amruta Industries is the largest Indian Manufacturer and Exporter of Xanthates. Sodium Potassium and Zinc salts of Ethyl, IsoPropyl, IsoButyl and Amyl Xanthates. Xanthates are used in the Froth Flotation for Extraction and Purification of Ferrous / Non Ferrous and Precious / Semi Precious Metals. Froth Flotation is a process...

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Flotation of zinc oxide ore using cationic and cationic-anionic mixed ...

EN, Flotation of smithsonite coming from a cerussite flotation circuit was investigated using Armac C and Armac T as cationic collectors and their mixtures with potassium amyl xanthate (KAX) as an anionic collector. Under optimum condition using Armac T with sodium hexamethaphosphate as a de-pressant, a smithsonite...

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Use of nitrogen in flotation for iron sulphide rejection Ignacio ...

was eval uated at Brunswick Mining ahead of zinc flotation (using the minicells) ... electrostatic interaction with xanthate ion in the Hodgson/Agar model ..... (zinc reverse flotation tests). Effect of flotation gas. FIGURE 6.7 Recovery-Yield curves for chalcopyri te in the float product (Zn reverse flotation tests). Effect of flotation.

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Depressants,Qixia Tongda Flotation Reagent Company,Mining ...

Collectors. Our Collector range is supplied via our partner Qixia TongDa Flotation Reagent Company who is the largest xanthate manufacturer in the world. ... Sodium diisobutyl dithiophosphate; Sodium diisoamyl dithiophosphate; Sodium dicresyl dithiophosphate; Ammonium dicresyl dithiophosphate; Zinc dithiophosphate...

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Ditiophosphates - RENASA

These reagents are mostly used to float silver-bearing sulfides, as well as some other kinds of minerals in alkaline circuits. ... The unique property of this collector is use in zinc flotation in replacement of Sodium Isopropyl Xanthate, its main characteristic being its selectivity opposite to the pyrite. This reagent is a secondary...

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Determination of collector chemicals from flotation process ... - Doria

decomposition products from xanthates are detrimental to the flotation process, but ... xanthates as collectors in froth flotation is from the year 1925 [18]. Since then ..... Table 3: Solubilities of xanthate metal complexes in water, at 20 ◦C [23]. Metal complex Solubility, [mol/L]. Zn(EX)2. 9.0 × 10-4. Ni(EX)2. 6.3 × 10-5. As(EX)2.

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