Q18 of 52 Page 80

In the Froth Floatation process, zinc sulphide and lead sulphide can be separated by ______________.

By using depressants like NaCN, two ores can be separated. NaCN for example selectively prevents ZnS from coming to the froth and instead allow PbSto come with the froth.

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Which of the following ores are concentrated by froth floation?