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Sometimes it is possible to separate two sulphide ores by adju

Question

Sometimes it is possible to separate two sulphide ores by adjusting the proportion of oil to water by using depressants. When a depressant $N a CN$ is added to an ore containing $Z n S$ and $P b S$ , what is the correct observation?

N a CN

prevents

P b S

from coming to the froth but allows

Z n S

to come with froth

N a CN

prevents

Z n S

from coming to the froth but allows

P b S

to come with froth

N a CN

prevents frothing of both

Z n S

and

P b S

, hence no froth is formed

N a CN

does not act as depressant hence a mixture of

P b S

and

Z n S

is found in the froth

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Sometimes it is possible to separate two sulphide ores by adjusting the proportion of oil to water by using depressants. When a depressant

N a CN

is added to an ore containing

Z n S

and

P b S

, what is the correct observation?

11 mins ago

Discuss this question LIVE

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Text solutionVerified

Froth floatation method is used for removing gangue from sulphide ores. In this process, a suspension of the powdered ore is made with water.
It is possible to separate two sulphide ores by adjusting the proportion of oil to water or by using ‘depressants’.
In the case of an ore containing $Z n S$ and $P b S$ , the depressant used is $N a CN$ . It selectively prevents $Z n S$ from coming to the froth but allows $P b S$ to come with the froth.

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Question Text	Sometimes it is possible to separate two sulphide ores by adjusting the proportion of oil to water by using depressants. When a depressant $N a CN$ is added to an ore containing $Z n S$ and $P b S$ , what is the correct observation?
Answer Type	Text solution:1
Upvotes	150

Sometimes it is possible to separate two sulphide ores by adjusting the proportion of oil to water by using depressants. When a depressant NaCN is added to an ore containing ZnS and PbS, what is the correct observation?

Text solutionVerified

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Sometimes it is possible to separate two sulphide ores by adjusting the proportion of oil to water by using depressants. When a depressant $N a CN$ is added to an ore containing $Z n S$ and $P b S$ , what is the correct observation?