Which of the following ores is concentrated u | vedclass

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(A) The concentration of sulphide ores is often carried out by the froth flotation process.In this process,depressants are used to selectively prevent

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Sphalerite

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(A) The concentration of sulphide ores is often carried out by the froth flotation process.In this process,depressants are used to selectively prevent one sulphide ore from forming froth.For an ore containing $ZnS$ (Sphalerite) and $PbS$ (Galena),sodium cyanide $(NaCN)$,which is a group $1$ cyanide salt,is used as a depressant.$NaCN$ selectively prevents $ZnS$ from coming to the froth by forming a complex,$Na_{2}[Zn(CN)_{4}]$,while $PbS$ forms froth.Therefore,$ZnS$ (Sphalerite) is the ore associated with this process.

Which of the following ores is concentrated using a group $1$ cyanide salt?

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