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what is the role of depressant in froth floatation process

What is the role of depressants in the froth floatation ...

Answer:-. ️Depressants prevent certain type of particles to form froth during froth flotation process, This helps to separate two sulphide ores. ️For example:- In case of an ore containing zinc sulphide (ZnS) and lead sulphide (PbS) , sodium cyanide ( NaCN) is use as depressant. NaCN (depressant) prevents ZnS to form froth.

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(Solved) - what is the role of depressant in froth floatation ...

In the froth flotation process we want some substances to settle down and some substances to float. Now naturally, the sulphide of the substance we want to extract will float and the "gangue" or useless material will sink. However, sometimes the ore we are using also has other sulphides present in it as impurities.

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Important Questions for Class 12 Chemistry Chapter 6 General ...

(ii) NaCN is used as a depressant to separate PbS ore from ZnS in froth flotation process. Question 56. Write the principle behind the froth floatation process. What is the role of collectors in this process? (All India 2014) Answer: Froth floatation method : This method is used for removing gangue from sulphide ores.

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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 chemicals that bind the mineral to the air bubble to be lifted away from the waste. Activators will attach itself ...

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Froth Flotation Process - Detailed Explanation With Diagrams ...

What is Froth Flotation Process? Froth flotation is one of the most popular operational processes for mineral beneficiation. In ore/mineral beneficiation, froth flotation is a method by which commercially important minerals are separated from impurities and other minerals by collecting them on the surface of a froth layer.

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ROLE OF DEPRESSENT IN FROTH FLOATATION PROCESS - Chemistry ...

Depressants prevent certain type of particles from forming froth during froth floatation process. A common depressant used in the froth floatation of lead sulphide is sodium cyanide. When the ore containing ZnS and PbS is subjected to froth floatation process in the presence of NaCN, then only PbS forms the froth.

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What is the role of depressant (NaCN) in Froth-Flotation ...

NaCN is added in the froth flotation process ZnS does not form the froth because asked Apr 10, 2019 in General principles and process of Isolation of metals by Simrank ( 72.0k points) general principles

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Handbook of Flotation Reagents | ScienceDirect

Flotation is a combination of chemical, physiochemical, and physical phenomena that govern the three-phase flotation system. The mineralwater, mineralair and waterair interfaces are considered to possess a surface energy that plays a decisive role in most of the aspects of the flotation phenomenon.

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Important Questions for Class 12 Chemistry Chapter 6 General ...

(ii) NaCN is used as a depressant to separate PbS ore from ZnS in froth flotation process. Question 56. Write the principle behind the froth floatation process. What is the role of collectors in this process? (All India 2014) Answer: Froth floatation method : This method is used for removing gangue from sulphide ores.

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What is the Role of Flotation Froth in the Flotation Process ...

The role of the reagent is to increase the stability of the mineralized froth during the flotation, and allow air dispersion and froth formation to proceed independently. Besides, it increases the hydrophobicity of the natural mineral surface and strengthens the separation of hydrophilic and hydrophobic particles.

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1 Froth Flotation Fundamental Principles

1 Froth Flotation Fundamental Principles Froth flotation is a highly versatile method for physically separating particles based on differences in the ability of air bubbles to selectively adhere to specific mineral surfaces in a mineral/water slurry. The particles with attached air bubbles are then carried to the surface and

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what is the role of Depressant in froth floatation method ...

Depressants prevent certain type of particles from forming froth during froth floatation process. A common depressant used in the froth floatation of lead sulphide is sodium cyanide. When the ore containing ZnS and PbS is subjected to froth floatation process in the presence of NaCN, then only PbS forms the froth.

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

Depressants prevent certain type of particles from forming froth during froth floatation process. A common depressant used in the froth floatation of lead sulphide is sodium cyanide. When the ore containing ZnS and PbS is subjected to froth floatation process in the presence of NaCN, then only PbS forms the froth.

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

Depressants prevent certain type of particles from forming froth during froth floatation process. A common depressant used in the froth floatation of lead sulphide is sodium cyanide. When the ore containing ZnS and PbS is subjected to froth floatation process in the presence of NaCN, then only PbS forms the froth.

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In the froth floatation process, the depressant used is

JIPMER 2015: In the froth floatation process, the depressant used is (A) sodium xanthate (B) sodium sulphide (C) sodium cyanide (D) all of these. Chec

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Composition for froth flotation of zinc sulfide - United ...

The present invention provides an improved process for removing undesirable calcium fluoride contaminant from zinc sulfide by use of a froth flotation procedure. According to the present process, an effective amount of a depressant for the calcium fluoride is added to the flotation feed prior to submitting the feed to froth flotation.

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ROLE OF DEPRESSENT IN FROTH FLOATATION PROCESS - Chemistry ...

Depressants prevent certain type of particles from forming froth during froth floatation process. A common depressant used in the froth floatation of lead sulphide is sodium cyanide. When the ore containing ZnS and PbS is subjected to froth floatation process in the presence of NaCN, then only PbS forms the froth.

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What is the role of depressant in froth floatation process?

Answer. Depressants prevent certain types of particles from forming froth with bubbles. Due to this, we can separate two sulphide ores. For example, sodium cyanide is a depressant used for an ore containing Z nS and P bS. N aC N forms a layer of the complex N a2. ] on the surface of Z nS and prevents it from forming a froth.

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what is the role of each of the following in froth floatation ...

what is the role of each of the following in froth floatation process i collectors ii froth stabilizers iii depressants - Chemistry - TopperLearning.com | y21t9dvxx

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Whats the Role of Flotation Froth in the Flotation Process ...

In the flotation process, there is one thing that plays a very important role in the whole processflotation froth. So what's the role of flotation froth in the flotation process? Motor triangular belt drives the impeller to rotate, and the centrifugal effect forms the negative pressure, then the flotation froth is formed under the ...

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Flotation Depressants - Mineral Processing & Metallurgy

First lets change the amount of the Flotation Depressants used. The valuable mineral that isnt 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 minerals color. This is because the froth is becoming purer as ...

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What is the role of a stabilizer in froth floatation process ...

>>The stabilizer plays an important role in the forth floatation process. >>During the froth floating process sulphide ore is purified. >>The gangue settled at the bottom is purified by Pine oil. >> Though we must know that the froth is not at all a stable one. >> in order to extract easily and completely we must make the forth stable.

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