Answer
Verified
382.2k+ views
Hint: As we know that froth flotation is a technique or method for selectively separating hydrophobic materials from a hydrophilic substance. This process is especially used in mineral processing, paper recycling as well as in waste water treatment industries so as to use pure water in the next cycle.
Complete answer:
Let us discuss about froth floatation method as follows:-
-Froth floatation method: It is one of the most popular operational techniques used for mineral beneficiation or extraction. It is a method through which economically and commercially important minerals are separated from impurities by collecting them just on the surface of a froth layer. Generally sulphide ores containing multiple metals such as lead, copper and zinc can be separately extracted by using this process.
-The basic principle used is the difference in the wetting ability of the ore, important metals and other impurities as based on this we can separate hydrophobic materials from a hydrophilic substance.
-To maintain uniform quality of froth as well as optimize the adhesive quality of the minerals, various chemicals are required to be mixed in the slurry which are given below:-
Collector: These are the chemicals that enhance the non-wettability of the mineral particles. Some examples of collectors are pine oils, fatty acids, xanthates, etc.
Frother: These are also known as froth stabilizers as these are used to stabilize the froth during froth floatation method. Few frothers used in this process are cresols, aniline, etc.
Activator: These are the chemical reagents which activate the mineral surface towards the action of the collectors and this is achieved by enhancing their chemical properties.
Depressant: These are also known as deactivators as they used to deactivate the mineral surface towards the action of collectors and this is achieved through changes in their chemical properties.
From the above data it is clear that in the froth floatation method, collectors are added to the suspension of powdered ore which means the assertion is completely true but collectors do not stabilize froth. So the correct option is: (C) Assertion is correct but Reason is incorrect.
Note:
-Hydrophobic substances are those which do not attract water molecules due to which they are not miscible in water whereas hydrophilic .
-Also learn and understand various metallurgical processes used in the extraction of important metals and minerals.
Complete answer:
Let us discuss about froth floatation method as follows:-
-Froth floatation method: It is one of the most popular operational techniques used for mineral beneficiation or extraction. It is a method through which economically and commercially important minerals are separated from impurities by collecting them just on the surface of a froth layer. Generally sulphide ores containing multiple metals such as lead, copper and zinc can be separately extracted by using this process.
-The basic principle used is the difference in the wetting ability of the ore, important metals and other impurities as based on this we can separate hydrophobic materials from a hydrophilic substance.
-To maintain uniform quality of froth as well as optimize the adhesive quality of the minerals, various chemicals are required to be mixed in the slurry which are given below:-
Collector: These are the chemicals that enhance the non-wettability of the mineral particles. Some examples of collectors are pine oils, fatty acids, xanthates, etc.
Frother: These are also known as froth stabilizers as these are used to stabilize the froth during froth floatation method. Few frothers used in this process are cresols, aniline, etc.
Activator: These are the chemical reagents which activate the mineral surface towards the action of the collectors and this is achieved by enhancing their chemical properties.
Depressant: These are also known as deactivators as they used to deactivate the mineral surface towards the action of collectors and this is achieved through changes in their chemical properties.
From the above data it is clear that in the froth floatation method, collectors are added to the suspension of powdered ore which means the assertion is completely true but collectors do not stabilize froth. So the correct option is: (C) Assertion is correct but Reason is incorrect.
Note:
-Hydrophobic substances are those which do not attract water molecules due to which they are not miscible in water whereas hydrophilic .
-Also learn and understand various metallurgical processes used in the extraction of important metals and minerals.
Recently Updated Pages
Who among the following was the religious guru of class 7 social science CBSE
what is the correct chronological order of the following class 10 social science CBSE
Which of the following was not the actual cause for class 10 social science CBSE
Which of the following statements is not correct A class 10 social science CBSE
Which of the following leaders was not present in the class 10 social science CBSE
Garampani Sanctuary is located at A Diphu Assam B Gangtok class 10 social science CBSE
Trending doubts
Write the difference between order and molecularity class 11 maths CBSE
A rainbow has circular shape because A The earth is class 11 physics CBSE
Which are the Top 10 Largest Countries of the World?
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
How do you graph the function fx 4x class 9 maths CBSE
Give 10 examples for herbs , shrubs , climbers , creepers
What are noble gases Why are they also called inert class 11 chemistry CBSE
The Equation xxx + 2 is Satisfied when x is Equal to Class 10 Maths
Differentiate between calcination and roasting class 11 chemistry CBSE