The pyrrhotite is then sent to froth flotation cells, and produces a 3% nickel concentrate. The non magnetic ore is sent to a series of rougher, cleaner flotation cells, and produces a
By adding a suitable depressants such as NaCN in mixture ZnS and PbS, It prevents coming of ZnS to froth but allows PbS to the froth.In this way the two ores can be separated. Hope it helps you!! 1
In the froth floatation process, zinc sulphide and lead sulphide can be separated by (a) using collectors ... Question 33.How do we separate two sulphide ores by froth floatation method? Explain with an example. ... In the case of an ore containing ZnS and PbS, the depressant used is NaCN. It forms complex with ZnS and prevents it from coming ...
In the froth floatation process, the role of the depressants is to separate two sulphide ores ... For example, to separate two sulphide ores (ZnS and Pbs), NaCN is used as a depressant which selectively allows PbS to come with froth, but prevents ZnS from coming to froth. This happens because NaCN ... S and FeS. Copper matte is put in a silica ...
Investigation of Flotation Parameters for Copper Recovery from Enargite and Chalcopyrite Mixed Ore Kazutoshi Haga+, William Tongamp and Atsushi Shibayama Faculty of Engineering and Resource Science, Akita University, Akita 010-8502, Japan
- Froth floatation Leaching Isolation of Crude Metal from Concentrated Ore ... it is possible to separate two sulphide ores by adjusting proportion of oil to ... in case of an ore containing ZnS and PbS, the depressant used is NaCN. It selectively prevents ZnS from coming to the froth but allows PbS to come with the froth
Froth flotation is considered to be the most widely used method for ore beneficiation. A collector is a chemical that attaches to the mineral surface and produces a Gold, silver, copper, lead, zinc, molybdenum, iron, potash, phosphate, and even it is removed from the electrowinning tank, washed, and prepared for sale.
Froth Floatation Process: The principle of froth floatation process is ... it is possible to separate the two sulphide ... It selectively prevents ZnS from coming to froth but allows PbS to come with the froth. 11. Leaching (Chemical separation): It is a process in which ore is treated with suitable solvent which dissolves the ore but not the ...
Name the depressant which is used to separate ZnS and PbS ores in the froth floatation process Chemistry General Principles and Processes of Isolation of Elements. 011-40705070 or Call me UPGRADE. 12-Science . 12-Science; JEE (Live) JEE (Live) ...3.3/5(20)
Floatation Column Typical industrial column cell comprises a steel tank equipped with a feed inlet pipe near the top of the column, a system of internal and external launders to collect and remove froth and a slurry outlet near the bottom of the tank to remove non-floating material. Drain nozzle and a series of re- pulping nozzles are also ...
Froth flotation is a separation process ore from mineral impurities by way of float ore to the surface through binding ... Online service Lead-Zinc ores Danafloat Home
Froth floatation synonyms. Froth floatation is a process used to selectively separate hydrophobic minerals suspended in a . Froth floatation; froth flotation . Of Flotation Of Copper anandpackaging. Pyrite-Gold Recovery in . The method of recovering copper by froth flotation from an aqueous pulp of an ore containing both sulfide and oxidized minerals .
Froth Flotation (Sulphide & Oxide) Froth Flotation ... Since pyrite is FeS it can be floated. If Gold is in interlocked form with gold then it is natural flotation. Bulk word is used for two different separate (physically) minerals but not interlocked or in solid solution with each other.
In the froth floatation process, the role of the depressants is to separate two sulphide ... For example, to separate two sulphide ores (ZnS and Pbs), NaCN is used as a depressant which selectively allows PbS to come with froth, but prevents ZnS from coming to froth. This happens because NaCN ... Copper matte contains Cu2S and FeS.
Two sulphide ores can be separated by adjusting proportion of oil to water or by using depressants. For example in case of an ore cotaining ZnS and PbS , the depressant NaCl is used . It forms complex with ZnS and prevents its coming with forth , but PbS remains with forth and can be separated .
As we know froth floatation method makes use of the wetting properties of mineral particles. Mineral particles (sulphide) become wet with oils, while gangue particles get wet by water According to my textbook (NCERT Class 12), we can use the froth-flotation method to separate a mixture of sulphide ores also using depressants.
In the froth floatation process, the role of the depressants is to separate two sulphide ores by selectively preventing one ore from forming froth. Free Quote CHAPTER-9 FROTH FLOTATION AND ITS APPLICATION TO ...
Froth flotation process: i) The froth flotation process is based on the principle of difference in the wetting properties of the ore and gangue particles with water and oil. ii) It is used for the extraction of those metals in which the ore particles are preferentially wetted by oil and gangue particles by water.
In the froth floatation process, the role of the depressants is to separate two sulphide ... For example, to separate two sulphide ores (ZnS and Pbs), NaCN is used as a depressant which selectively allows PbS to come with froth, but prevents ZnS from coming to froth. This happens because NaCN ... remove the remaining FeO and FeS present in the ...
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.
Pine oil, soaps, cresols etc are froth stabilizers. Depressants: Some time two similar minerals are both found in the ore and both react to collectors similarly. This will mean that both will rise to the top of the foam. To separate such similar compounds we use depressants.
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 in3.5/5(55)
Froth Floatation Method: This method has been in use for removing gangue from suphide ores. In this process, a suspension of the powdered ore is made with water. To it, collectors and froth
A.6- It is possible to separate two sulphide ore by adjusting proportion of oil to water in froth flotation process by using a substance known as depressant. e.g. NaCN is used to separate ZnS and PbS.
In froth floatation process, depressant prevents the formation of froth. it is used to separate two sulphide ores by preventing the formation of froth of one sulphide ore and allowing the other to form the froth.
ground ore ( 150 mesh ) being used in the commercial flotation plant of Rajpura Dariba Mines. The feed ( zinc concentrate cleaned in the commercial plant of 3000 tons/day of ore ) has the following composition (Table 1). Flotation test : These were carried using a Dorr-Oliver laboratory flotation cell
Froth bubbles carrying suiphide ore particles Froth Floatation Process This method is emploved for the treatment of the minerals especially sulphides. The process is based on the difference in wetting characteristics of the gangue and the ore with water and oil. .
49 XII Chemistry AK 12. Which from of copper is called blister copper? 13. What are froth stabilizers? Give two examples. .14. A sample of galena is contaminated with zinc blend.
(ii)Depressants are used to prevent one type of sulphide ore particles from forming the froth with air bubbles, e.g. Sodium cyanide is used as a depressant to separate lead sulphide (PbS) ore from zinc sulphide (ZnS) ore.
Name the depressant which is used to separate ZnS and PbS ores in the froth floatation process
It is possible to separate two Sulphide ore by using Depressants Eg :-In ore containing ZnS and PbS , NaCN act as a Depressant & selectively prevents the ZnS from coming to the froth but allows PbS.
NaCN is used to separate two sulphide ores , PbS and ZnS. NaCN forms a complex, Na 2 , with zinc on the surface of zinc sulphide, thus selectively preventing ZnS from frothing. 4NaCN + ZnS Na 2 + Na 2 S
Jan 07, 2016· 13.Why froth floatation process is used for concentration sulphide ores Ans: It is based on the preferential wetting of the ore particles by oil and the gangue particles by water. SHORT ANSWER TYPE QUESTION (2 marks) 1. Describe the method of refining of nickel.
the metal galena(PbS)and zinc blende(ZnS) are concentrated..... by ranvir.....hi friends ...i am not sure about the ans...if wrong pls excuse me...
In froth floatation process,depressants helps to separate two sulphide ores by selective prevention of froth formation by one ore and allowing the other to come into froth. For example, in order to separate two sulphide ores (ZnS and Pbs), NaCN is used as a depressant.
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The depressants are used to prevent certain types of particles from forming the froth with bubbles in froth floatation process. This helps to separate two sulphides ores. For example:
Nov 04, 2017· NaCN used in the froth floatation method for the purification of ore is:- (A) ZnS which contain PbS (B) Cu 2 S which contain Fe 2 S 3 (C) PbS which contain ZnS (D) PbS which contain SiO 2
Ans. Since zinc lies above iron in electrochemical series, it is more reactive than iron. As result, if zinc scraps are used, the reduction will be fast. However, zinc is a costlier metal than on. Therefore, it will be advisable and advantageous to use iron scraps.
In the froth floatation process, the role of the depressants is to separate two sulphide ores by selectively preventing one ore from forming froth. Free Quote Froth flotation Wikipedia
Magnetic particles form a separate heap near the magnetic roller. ... Froth Floatation method: Principle: The mineral particles are wetted by oil while the gangue particles are wetted by water ... prevents ZnS from coming to the froth but allows PbS to come with the froth .
The ores used in making iron and steel are iron oxides, which are compounds These processes include crushing, screening, tumbling, floatation, and the form it takes in steel iron sulfide, FeS allows the steel to become brittle, Oxygen injected into the mix or furnace charge improves and speeds up
Froth Floatation Froth Floatation Presented By: Gulfam Hussain Introduction Floatation is an extractive process where various minerals can be selectively extracted. Flotation
There is no chemical reaction to separate ZnS and PbS. NaCN is used as depressant to suppress the froth floatation of ZnS by forming addition compound only.
14. A sample of galena is contaminated with zinc blend. Name one chemical which can be used to concentrate galena selectively by froth floatation
Copper Sulphate is universally used to activate sphalerite for subsequent recovery by Sub-A Flotation. This reagent is added to the conditioner along with the lime. An eight cell Sub-A Flotation Machine of the proper size as determined by test is recommended for zinc flotation.
Depressants are added to prevent certain type of particles from forming the froth with the air bubbles. For example to separate zinc sulphide(ZnS) ore from lead sulphide(PbS) ore,sodium cyanide is used as adepressant which acts as adepressant for ZnS but does not prevent PbS from the formation of froth.
For example, to separate two sulphide ores (ZnS and Pbs), NaCN is used as a depressant which selectively allows PbS to come with froth, but prevents ZnS from coming to froth. This happens because NaCN reacts with ZnS to form Na 2 .
Nov 17, 2008· The Grade of PbS and ZnS in the ore between 2-8% for PbS and 8-16 % for ZnS. Generally, to increase the concentration of the metal in sulfide mineral is used The Froth Flotation. Froth Flotation is Physical Chemistry methode to separate achieve mineral and impurities by use the mineral interface difference.