froth flotation depressant

Froth flotation process and its application

collectors, frothers, froth stabilizers, depressants and activators, pH regulators etc. The sulfide ore flotation process can be studied by both chemical and electrochemical phenomena considering the interfacial energies.

US4657669A - Depressants for froth flotation - Google Patents

The invention concerns the use of 5-hydroxy-3-thiazolidine-2-thiones of the structure I ##STR1## where R 1 =(CHOH) m, R 2 =(CHOH) n where (m+n)=0 to 6, and R 3 is alkyl or hydroxy-alkyl as depressants in the flotation of mixtures of base metal minerals, particularly those containing molybdenum, copper, lead, zinc; and to flotation processes using these compounds.

FROTH FLOTATION : RECENT TRENDS Flotation of Sulphide …

FROTH FLOTATION : RECENT TRENDS @IIME, JAMSHEDPUR, 1998; pp. 18-41 Flotation of Sulphide Ores - HZL Experience V.P. KOHAD Hindustan Zinc Ltd., Zawar Mines, Udaipur - 313 901 ABSTRACT Flotation process, patented in the year 1906, was originally developed for mineral industry to recover values from high grade tailings of gravity separation plants.

(PDF) Apatite flotation using sorghum as depressant.

Key words: Apatite, Froth Flotation, Depressants, Starch. INTRODUCTION . Agriculture has had a major participation in Brazil's trade balance on the last decades, being one of the .

What is the role of depressant in froth floatation process ...

What is the role of depressant in froth floatation process?

CA1328512C - Flotation depressants - Google Patents

CA1328512C CA000582253A CA582253A CA1328512C CA 1328512 C CA1328512 C CA 1328512C CA 000582253 A CA000582253 A CA 000582253A CA 582253 A CA582253 A CA 582253A CA 1328512 C CA1328512 C CA 1328512C Authority CA Canada Prior art keywords flotation mineral iron depressant gangue Prior art date Legal status (The legal status is an assumption and is …

Froth flotation 2 - slideshare.net

Jun 23, 2013· Froth flotation 2 presentation includes collection in the froth layer and reagents. ... is a particularly useful depressant insufide mineral flotation. Its activity is believed to bedue to its ability to complex with, and in some casesdissolve, a number of metal ions, preventing them fromattaching to the xanthate molecules. In particular, it ...

Flotation - SlideShare

Aug 14, 2017· Flotation Reagents Three types of chemical reagents used during the froth flotation process •Collectors •Frothers •Modifiers 19. Collectors These are surface active agents that are added to the flotation pulp where they adsorbs selectively on the surface of …

「floatation process ore mine com bot」

Froth flotation . Froth flotation is a process for separating minerals from gangue by taking advantage of differences in their hydrophobicity.Hydrophobicity differences between valuable minerals and waste gangue are increased through the use of surfactants and wetting agents.

Mitigation of environmental hazards of sulfide mineral ...

In the second project, an attempt was made to replace toxic sodium cyanide (NaCN) with the biodegradable chitosan polymer as pyrite depressant. To achieve an optimum flotation performance and froth stability, the third project utilized two types of …

Recovery of phosphate minerals from plant tailings using ...

flotation cell in the presence of different reagents. These reagents include sodium silicate which is a commercially-used gangue dispersant and in-house synthesized novel gangue depressant, Hy-PAM. Moreover, several influencing parameters such as solid contents of the flotation pulp, pulp pH and pulp residence time were investigated to optimize the

Pyrrhotite Depressant in Polymetallic Flotation - Froth ...

The number two depressant is lime. In general, flotation of pyrrhotite is depressed in the range of about pH 9.3 and above. Note that this is not just a pH effect - sodium hydroxide and sodium carbonate are not particularly effective. The third depressant is redox (eH). When the redox is low, pyrrhotite is depressed.

Flotation Conditioners -Modifiers -Activators -Depressants

Aug 10, 2015· Flotation Conditioners -Modifiers -Activators -Depressants. This branch of chemicals will prepare the mineral surface so other reagents will be able to collect the metal. For Conditioners and Modifiers, it may be simply cleaning the surface of the particles, as in the case of removing oxidization, or it may be a chemical that these are the ...

Depressants for froth flotation - Sentrachem Limited

The partial selective depression of copper sulphides and resultant improvements in molybdenum grade is demonstrated. EXAMPLE 3. A sample of a complex sulphide ore assaying 0,53% copper, 9,5% lead, and 2,6% zinc was wet-milled with a depressant reagent at pH8 and subjected to batch flotation using as collector "Senkol" 50 (a composition containing sodium mercaptobenzthiazole and marketed by ...

Pyrite Depressant - Froth Flotation (Sulphide & Oxide ...

Froth Flotation (Sulphide & Oxide) ... For instance, Cytec's S-7261A depressant, napthalene sulfonates, lignosulfonates, dextrin, quebracho, etc or synergistic blend combinations of the above (and some suppliers do sell them) are a good starting point, because unlike SMBS or lime which have high dosage requirements or cyanide which has a ...

(PDF) Identification of sodium silicate species used as ...

Sodium silicate (water glass) is a modifier reagent widely used in flotation with the function of a depressant or dispersant. The interaction between sodium silicate and mineral surfaces is still ...

Flotation Depressants - Mineral Processing & Metallurgy

Aug 12, 2015· First let's change the amount of the Flotation Depressants used. The valuable mineral that isn't liberated from the unwanted mineral will begin to be depressed along with the waste. For the floatation operator, the change that will become most apparent is, that the color of the froth will begin to reflect more of the wanted mineral's color.

v118n1a8 Effect of frother and depressant interaction on ...

interactive effect of frother and depressant had significant negative effect on all responses except concentrate grade. The optimum levels for recovery and grade were analysed assuming equal importance of grade and recovery as well as double importance for grade.:6% 45)2 froth flotation, PGMs, flotation reagents, frother, depressant ...

Best flotation depressant, depressant in froth floatation ...

Flotation depressant is mainly Y&X Company special reagents, which has very good effect for oxidized ores, mines with high mud content, etc. Our depressant have a significant effect on the separation of copper and molybdenum, reducing the amount of sodium sulfide …

Minimalization of Ash from Iranian Gilsonite by Froth ...

For these tests, common industrial flotation reagents of coal froth flotation were applied including Gasoil as a collector, MIBC as a frother from Chinese producer with 99% purity, and sodium silicate made in china with 99% purity as a depressant due to the composition of ash content as shown in Table 1. 4. Results and Discussion

Froth Flotation of Iron Ores

Jan 02, 2012· With the depleting reserves of high-grade iron ore in the world, froth flotation has become increasingly important to process intermediate- and low-grade iron ore in an attempt to meet the rapidly growing demand on the international market. In over half a century's practice in the iron ore industry, froth flotation has been established as an efficient method to remove impurities from iron ore.

US4514292A - Froth flotation process - Google Patents

The froth flotation of ore and coal is significantly improved in recovery and grade of valuable minerals and coal when a depressant combination of an inorganic sulfite and the salts of certain sulfonated compounds are employed.

Iron ore；froth flotation；floatability；_

：This study focus on the upgrading of SLon concentrates, of a complex African iron ore, with the aid of flotation.Mineralogical studies indicated that the +38µm material was not liberated and required milling prior to flotation.The -38µm material was well liberated and was close to the required product specification, with a Fe content of 99.7% of the target grade.

What is the froth flotation process? Are there any ...

Froth flotation is a process used for mineral recovery that takes advantage of the hidrophobicity of different materials, that means that there are materials that will easily get attached to water while others will repel it. The ability of air bub...

University of Kentucky UKnowledge

Nov 08, 2013· DEPRESSANTS . Froth flotation is the most efficient method for phosphate separation, which is a physic-chemical separation process based on the difference of surface properties between the valuable minerals and unwanted gangue minerals. However, the presence of clay slimes in the slurry after grinding consumes a large amount of reagents ...

FROTH FLOTATION A CENTURY OF INNOVATION PDF

Apr 21, 2021· Fuerstenau depressant developed dixanthogen effect energy Equation ethyl xanthate fatty acid feed film floatability flotation cell flotation circuit flotation process flotation reagents flotation recovery froth flotation frother function galena gangue Gaudin gold grinding hematite hydrophilic hydrophobic surfaces hydroxamate increase industry ...

(PDF) The Effect of Sodium Silicate as pH Modifier and ...

High recoveries at 76–84% (Y + Nd + Ce)2O3 but still low (Y + Nd + Ce)2O3 grade at 2.1% in the froth were obtained at flotation conditions of 63 μm, 25 °C, pH 10.5, 1,875 g/ton sodium ...

ii What is the role of depressant in froth flotation ...

(ii) What is the role of depressant in froth flotation process? (iii) Write the name of reducing agent to obtain iron from Fe 2 O 3 at high temperature. R + U [CBSE Foreign Set-1 2017] Ans. (i) See LAT-I Q.1. (i) 1 (ii) It selectively prevents one of the sulphide ores from coming to the froth. 1 (iii) Coke. [CBSE Marking Scheme 2017] 1 (a) Mond process (b) van Arkel method Q. 10.

(PDF) Froth flotation process and its application

collectors, frothers, froth stabilizers, depressants a nd activators, pH regulators etc. T he sulfide ore flotation process can be studied by both chemical and electrochemical phe nomena ...

What is the role of depressant in froth floatation process?

For example, sodium cyanide is a depressant used for an ore containing Z n S and P b S. N a C N forms a layer of the complex N a 2 [Z n (C N) 4 ] on the surface of Z n S and prevents it from forming a froth. Thus, it acts as a depressant. However, N a C N does not prevent P b S from forming froth and allows it to come with froth.

Froth Flotation Process - Detailed Explanation With ...

Flotation is the process of separation of beneficial minerals from a mixture by creating froth on which minerals separate out. This method of froth floatation is a method of mineral processing in which different minerals are separated selectively. Such ores containing multiple metals such as lead, copper and zinc can be selectively extracted by ...

(PDF) Handbook of Flotation Reagents Chemistry, Theory and ...

Handbook of Flotation Reagents Chemistry, Theory and Practice: Flotation of Sulfide Ores. Serkan Gökçen. Download PDF. Download Full PDF Package. This paper. A short summary of this paper. 36 Full PDFs related to this paper. Read Paper.

Selective adsorption of a new depressant Na2ATP on ...

Nov 01, 2020· In this paper, Na 2 ATP was first applied as a depressant in the flotation separation of magnesite and dolomite with sodium oleate. The significant influence of Na 2 ATP on the flotation behavior of magnesite and dolomite was investigated via flotation tests. The selective adsorption behavior of Na 2 ATP on different mineral surfaces was studied through adsorption measurements, …

US5693692A - Depressant for flotation separation of ...

A new depressant for use in enhanced separation of polymetallic sulphides is described. The depressant agent is used in conjunction with conventional collector agents and frothing agents in the flotation separation of copper, nickel, lead, zinc sulphides by depressing iron sulphides such as pyrrhotite, pyrite and marcasite in the tailing.

1 Froth Flotation – Fundamental Principles

Froth flotation is a good example of an engineering "system", in that the various important parameters are highly inter-related, as shown in Figure 1. It is therefore important to take all of Chemistry Components Collectors Frothers Activators Depressants pH Equipment Components Cell Design Agitation Air Flow Cell Bank Configuration

froth flotation depressant

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