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Froth Flotation

Give the equa...

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Give the equation for the reaction of NaCN with ZnS and PbS for froth flotation method of concentration

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Q. ZnS is always contaminated with PbS. We add

N a C N + Z n S

to enrich PbS by froth flotation process. If true enter 1 else 0.

Choose the correct statement(s) for froth flotation process, which is used for the concentration of sulphide ore.

a) It is based on the difference in the ability of different minerals to become wet.

b) It uses sodium ethyl xanthate,

C_{2} H_{5} O C S_{2} N a

N a C N

as a depressant in the mixture of

Z n S

P b S

Z n S

forms soluble complex and

P b S

Q. NaCN is sometimes added in the froth flotation process as a depressant when ZnS and PbS minerals are expected because __________.

N a C N

is sometimes added in the froth flotation process as a depressant when

Z n S

P b S

minerals are expected because ______.

Z n S

P b S

minerals are present together, then

N a C N

is added to separate them in the froth flotation process as a depressant, because:

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