depression carbonate depression in flotation

how can i depress carbonates in flotation

Jun 30 2017 The effects of carbonate minerals (dolomite and siderite) on the flotation of hematite using sodium oleate as a collector were investigated through flotation tests supplemented by dissolution measurements solution chemistry calculations zeta-potential measurements Fourier transform infrared (FTIR) spectroscopic studies and X-ray photoelectron spectroscopy (XPS) analyses.

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How Can I Depress Carbonates In Flotation

Reverse flotation of carbonate minerals ... The flotation of carbonates can be ... The mixed depressant had no effect on the flotation of calcite, but it depressed ... chemistry of pyrite depression in flotation ... flotation circuit where pyrite is already depressed. Current. >>Learn More; Flotation ... can be obtained during pyrite flotation by ... carbonate calcium stearic ...

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Carbonate Depressants - Froth Flotation (Sulphide

2021-6-17  Generally I agree that reverse flotation would be the recommended choice. By the way, Oxalic acid depressed carbonates and hydrofluorosilicic acid depressed silicates, so 50% oxalic and 50% H2SiF6, and for the collector tries tallow diamine acetate.

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Investigation of the depressants involved in the

2019-6-15  Thus, sodium carbonate is commonly used in flotation as a pH modifier . 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 depressants.

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Flotation separation of carbonate from sulfide

2004-7-1  Reverse flotation of carbonate minerals from refractory gold-bearing sulfide ores requires the flotation of the carbonate minerals (calcite, dolomite, siderite, etc.) while depressing sulfide minerals and native gold. The flotation of carbonates can be achieved

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Understanding the depression mechanism of sodium

2020-3-5  The principle of reverse flotation is that valuable minerals are sunk [4,5]. Due to these minerals similar soluble properties and structures, direct flotation is inefficient. Therefore, reverse flotation of carbonate gangue and depression of apatite has been practiced by predecessors [4,6]. Thus, the understanding of depression mechanism of apatite and other calcicolous minerals flotation has

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Cellulase as a new phosphate depressant in dolomite ...

2017-5-10  The flotation experiments provide some indication about the nature of the phosphate depression reaction using cellulase enzyme but they are insufficient to completely identify the chemical nature of the reaction products. Fourier transform infrared spectroscopy (FTIR) is used for this purpose. The surface compounds, formed on the minerals surface (collophane and dolomite) after collector adsorption and subsequent a bio-treatment process, are examined through the FTIR spectroscopy technique. The assignments of the bands are made based on the reported values for the various functional groups (Herman, 1963; Socrates, 1980). Figure 5 represents FTIR spectra of collophane interacted with oleic acid and cellulase. It is clear from Fig. 5 that the peak at 1044 cm-1 due to P-O stretching of collophane interacted with oleic acid and cellulase enzyme, is broader, and its intensity is lower than that of oleate interacted with collophane. The peaks at 1634 cm-1 due to oleic acid, and at 1637 cm-1due to cellulase

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Flotation separation of fluorite from calcite using ...

2020-7-1  A depressant is a kind of regulator in the flotation that it is used to increase the hydrophilicity of gangue minerals. Depressants mainly include inorganic depressants and organic depressants,,. Water glass or modified water glass is the most widely applied inorganic depressant in fluorite flotation,,,.

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CHAPTER 7 FLOTATION OF SULPHIDE MINERALS

2015-10-19  Lecture 5 Flotation 4 3. Chromate as depressant (CrO 7 2-) Lead chromate (PbCrO 7) is a sparingly soluble compond. As a result, when chromate salts are added to a galena system, the formation of lead chromate on the galena surface will occur. Depression is ascribed to the strong hydration of chromate adsorbed on the surface. 4.

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Depressant - an overview ScienceDirect Topics

A depressant is any chemical which inhibits or prevents the adsorption of a collector by a mineral particle and thereby prevents its flotation. An activator prepares the mineral surface to enhance the adsorption of the collector. pH regulators adjust the pulp pH to give optimum performance for a

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How Can I Depress Carbonates In Flotation

Flotation separation of carbonate from sulfide minerals, I ... Reverse flotation of carbonate minerals ... The flotation of carbonates can be ... The mixed depressant had no effect on the flotation of calcite, but it depressed ... chemistry of pyrite depression in flotation ... flotation circuit where pyrite is

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Carbonate Depressants - Froth Flotation (Sulphide

2021-6-17  There is an interesting paper published in the Flotation'13 about apatite flotation with carbonate called: "Understanding the effect of CO2 on apatite flotation from Catalão´s siliceous carbonate phosphate ore" Sandeep Bisht. 5 years ago. Sandeep Bisht 5 years ago. Like.

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How Can I Depress Carbonates In Flotation

Handbook of Flotation Reagents6.16 Мб. It means that we have to learn how to interpret the interactive effects of flotation reagents in a plantused for flotation of oxidic minerals (silicates), carbonate materials, oxides and minerals containing sulfo group.under different conditions, can show either activating or depressing action in flotation.

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Use of depressants in the direct flotation of a silicate ...

In this study, conducted in a laboratory scale, eight different depressants, organic and inorganic, were tested in the direct flotation of a Brazilian silicate-carbonate phosphate ore. The best performance in the depression of calcite and silicates was achieved with cassava starch.

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Selective depression of sphalerite by combined

2019-7-26  The depression performance and mechanism of the combined depressant containing potassium ferricyanide (K3[Fe(CN)6]), zinc sulfate (ZnSO4), and sodium carbonate (Na2CO3) with potassium isobutyl xanthate (PPBX) as the collector in a mixed Pb–Zn sulfide flotation system were investigated using microflotation experiments, contact-angle experiments, adsorption capacity

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The depression of quartz in sulphide flotation

2020-10-13  hence depression of the gangue minerals in the flotation of sulphides from an artificial pyrite-quartz mixture. Flotation . of . any given mineral is intimately bound up with the degree of dispersion or flocculation of that mineral in the pulp and it may be aaid(l4) that flotation is not (14) Wark, I.i. Principles of Flotation.

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CHAPTER 7 FLOTATION OF SULPHIDE MINERALS

2015-10-19  Lecture 5 Flotation 4 3. Chromate as depressant (CrO 7 2-) Lead chromate (PbCrO 7) is a sparingly soluble compond. As a result, when chromate salts are added to a galena system, the formation of lead chromate on the galena surface will occur. Depression is ascribed to the strong hydration of chromate adsorbed on the surface. 4.

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Solution chemistry of carbonate minerals and its

2017-6-30  The effects of carbonate minerals (dolomite and siderite) on the flotation of hematite using sodium oleate as a collector were investigated through flotation tests, supplemented by dissolution measurements, solution chemistry calculations, zeta-potential measurements, Fourier transform infrared (FTIR) spectroscopic studies, and X-ray photoelectron spectroscopy (XPS) analyses.

More

2020-The synergistic depression phenomenon of an organic ...

2021-3-2  AbstractThe depression of pyrite (FeS2) through an organic depressant is not only ineffective but also nonselective whichcauses poor selectivity. In this research, the depression effect of an organic polymer ‘poly-γ-glutamic acid(γ-PGA, a widely available class of polysaccharides)’ on pyrite flotation was improved by the addition of lime(CaO).

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An Overview of Calcite Recovery by Flotation

2020-9-23  In general, precipitated calcium carbonate (PCC) is used as a mineral filler in paper industries; while natural calcite (CaCO3) ore is also suitable for industrial use if it is a finely ground high-grade material. Naturally, calcite is found in the form of high- or low-grade ores and it is one of the most widely distributed industrial minerals on the earth’s crust. However, it is rarely ...

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How Can I Depress Carbonates In Flotation

Handbook of Flotation Reagents6.16 Мб. It means that we have to learn how to interpret the interactive effects of flotation reagents in a plantused for flotation of oxidic minerals (silicates), carbonate materials, oxides and minerals containing sulfo group.under different conditions, can show either activating or depressing action in flotation.

More

Use of depressants in the direct flotation of a silicate ...

In this study, conducted in a laboratory scale, eight different depressants, organic and inorganic, were tested in the direct flotation of a Brazilian silicate-carbonate phosphate ore. The best performance in the depression of calcite and silicates was achieved with cassava starch.

More

CHAPTER 7 FLOTATION OF SULPHIDE MINERALS

2015-10-19  Lecture 5 Flotation 4 3. Chromate as depressant (CrO 7 2-) Lead chromate (PbCrO 7) is a sparingly soluble compond. As a result, when chromate salts are added to a galena system, the formation of lead chromate on the galena surface will occur. Depression is ascribed to the strong hydration of chromate adsorbed on the surface. 4.

More

Solution chemistry of carbonate minerals and its

2017-6-30  The effects of carbonate minerals (dolomite and siderite) on the flotation of hematite using sodium oleate as a collector were investigated through flotation tests, supplemented by dissolution measurements, solution chemistry calculations, zeta-potential measurements, Fourier transform infrared (FTIR) spectroscopic studies, and X-ray photoelectron spectroscopy (XPS) analyses.

More

MECHANISM OF SPHALERITE DEPRESSION IN AN OPEN

2021-1-15  MECHANISM OF SPHALERITE DEPRESSION IN AN OPEN CU/ZN FLOTATION SEPARATION CIRCUIT *L. Xia1, B. Hart1, M. Furlotte2, G. Gingras2, C. Olsen3 1Surface Science Western, University of Western Ontario 999 Collip Circle, LL31, London, Ontario, Canada, N6G 0J3

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Copper Molybdenum Flotation depressant - Barium

2021-6-3  Flotation is conducted at high pH levels often times greater than 11 using lime to ensure good depression of sulphide minerals, particularly iron sulphides and copper. Other depressants used include cyanide and Nokes reagent (thiophosphorous or thioarsenic compounds).

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2020-The synergistic depression phenomenon of an organic ...

2021-3-2  AbstractThe depression of pyrite (FeS2) through an organic depressant is not only ineffective but also nonselective whichcauses poor selectivity. In this research, the depression effect of an organic polymer ‘poly-γ-glutamic acid(γ-PGA, a widely available class of polysaccharides)’ on pyrite flotation was improved by the addition of lime(CaO).

More

A Review of Recent Advances in Depression

@inproceedings{Park2020ARO, title={A Review of Recent Advances in Depression Techniques for Flotation Separation of Cu–Mo Sulfides in Porphyry Copper Deposits}, author={Ilhwan Park and Seunggwan Hong and Sanghee Jeon and M. Ito and Naoki Hiroyoshi}, year={2020} } Ilhwan Park, Seunggwan Hong, +2 authors Naoki Hiroyoshi;

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Selective depression behavior of guar gum on talc

2017-7-29  The depression behavior and mechanism of guar gum on talc-type scheelite flotation were systematically investigated by flotation experiments, adsorption tests, zeta-potential measurements, and infrared spectroscopic analyses. The flotation results for monominerals, mixed minerals, and actual mineral samples indicated that guar gum exhibited much higher selective depression for talc than for ...

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An Overview of Calcite Recovery by Flotation

2020-9-23  In general, precipitated calcium carbonate (PCC) is used as a mineral filler in paper industries; while natural calcite (CaCO3) ore is also suitable for industrial use if it is a finely ground high-grade material. Naturally, calcite is found in the form of high- or low-grade ores and it is one of the most widely distributed industrial minerals on the earth’s crust. However, it is rarely ...

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