Home Products role of depressant in froth flotation process

role of depressant in froth flotation process

What is the role of a depressant in froth flotation process ...

What is the Action of Hydrochloric Acid(HCL) on 0.1% Bromothymol Blue :- Answer all the questions.3 x 2 = 6MA mixture of oxygen and ethyne is burnt for welding ; can you tell why a mixture of ethyne and airis not used ?

Chat
(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.

Chat
The role of sodium sulfide in the flotation of pyrite ...

Despite the studies on sulfidization and collectorless flotation with sodium sulfide, few studies have been conducted to understand the role of sodium sulfide in the flotation of pyrite depressed in chalcopyrite flotation which was a subject of this paper. This study provides insights to improve the flotation of gold associated with pyrite. 2.

Chat
Role of Collectors and Depressants in Mineral Flotation: A ...

A theoretical analysis was conducted to study the role of collectors and depressants in flotation, based on the extended DerjaguinLandauVerweyOverbeek (DLVO) theory, where the hydrophobic force is considered. The collector-coated hydrophilic particle and the depressant-coated hydrophobic particle are simplified to a sphere uniformly covered with respectively hydrophobic and ...

Chat
ROLE OF STARCH AND METABISUPHITE ON PURE PYRITE AND PYRITIC ...

demands selective depression of pyrite from chalcopyrite. Conventionally sodium cyanide is used as a depressant in alkaline conditions for the selective depression of pyrite from chalcopyrite during the froth flotation process, leading to potentially disastrous environmental consequences (Ball and Rickards, 1976). Therefore,

Chat
1 Froth Flotation Fundamental Principles

After carrying out a froth flotation separation, there as shown in Table 1. Using this data, calculate: (a) Ratio of concentration (b) % Metal Recovery (c) % Metal Loss (d) % Weight Recovery, or % Yield (e) Enrichment Ratio Table 1: Grade/recovery performance of a hypothetical copper ore flotation process.

Chat
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 ...

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

Best answer (i) It prevents froth formation by one sulphide ore and allowing the other to come into froth. (ii) If the ore contains mixture of ZnS and PbS, NaCN allows PbS to come with froth and ZnS to sink. (iii) It helps to separate two sulphide ores in a mixture like ZnS and PbS.

Chat
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.

Chat
Role of Surfactants in Mineral Processing: An Overview ...

Hence, froth flotation is the single most important unit operation, which is the root solution to all these problems and used for the recovery and upgradation of valuable mineral, especially below 150. Froth flotation which uses the difference in physico-chemical surface properties of minerals is employed in several industries for fines processing.

Chat
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.

Chat
Exploration of a novel depressant polyepoxysuccinic acid for ...

The excessive quantity of carboxylic groups in the adsorbed PESA molecules then ionized in water to produce hydrogen ions, resulting in a negatively charged lizardite surface. Thus, PESA performed a dual role (as depressant and dispersant) in improving the separation flotation efficiency of pentlandite from lizardite slimes.

Chat
Froth Flotation Process - Detailed Explanation With Diagrams ...

They increase the Selectivity of flotation, by preventing one mineral from flotation while allowing another mineral to float unrestricted. Depressants can be classified into two categories. Inorganic depressants such as Sodium cyanide, Zinc sulphate etc. Organic depressants such as Starch, tannin, Quebracho, Dextrin etc. pH Modifiers

Chat
ROLE OF STARCH AND METABISUPHITE ON PURE PYRITE AND PYRITIC ...

demands selective depression of pyrite from chalcopyrite. Conventionally sodium cyanide is used as a depressant in alkaline conditions for the selective depression of pyrite from chalcopyrite during the froth flotation process, leading to potentially disastrous environmental consequences (Ball and Rickards, 1976). Therefore,

Chat
(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.

Chat
Froth flotation of Aljustrel sulphide complex ore

Froth flotation of Aljustrel sulphide complex ore 759 Froth flotation occurs in an aqueous medium which involves aggregation of air bubbles and mineral particles with subsequent levitation of aggregates to the surface and transfer to a froth phase. The degree of particle surface wettability determines attachment and aggregation.

Chat
US4214710A - Froth flotation of zinc sulfide - Google Patents

process according depressant froth flotation flotation Prior art date 1978-10-20 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US05/953,140 Inventor Martin Wilson

Chat
Froth floatation process used for the concentration of ...

During the flotation process of some ores, these substances are added which activate or depress the flotation property of the minerals and thus help in the separation of minerals present in the ore. For instance, galena (PbS) is usually associated with sphalerite (ZnS) and pyrites ,NaCN. Hence all options are correct.

Chat
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 ...

Chat
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

Chat
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.

Chat
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.

Chat
Froth Flotation Process

Metallurgical ContentFROTH FLOTATIONFroth Flotation HandbookBubble Contact Angle Froth FlotationHow Flotation Chemicals are UsedFunctions of Flotation ReagentsClassification of Flotation ReagentsFlotation Processing Costs The Froth Flotation Process is about taking advantage of the natural hydrophobicity of liberated (well ground) minerals/metals and making/playing on making them hydrophobic ...

Chat