Question

explain depressents in Metallurgy with
example ?​

Answer 1

Answer:

In froth floatation process,depressants helps to separate two sulphide ores by selective prevention of froth formation by one ore and allowing the other to come into froth. For example, in order to separate two sulphide ores (ZnS and Pbs), NaCN is used as a depressant.

Explanation:

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Answer 2

Answer:

In froth floatation process,depressants helps to separate two sulphide ores by selective prevention of froth formation by one ore and allowing the other to come into froth.

For example, in order to separate two sulphide ores (ZnS and Pbs), NaCN is used as a depressant. It selectively allows PbS form froth, but prevents ZnS from coming to froth. This happens due to the fact that NaCN reacts with ZnS to form Na2[Zn(CN)4].

4 NaCN + ZnS → Na2[Zn(CN)4] + Na2S

Answered on: 2016/08/18 by ExamFear