Q:

role of depressant in froth-floatation process

karamassaf
Save to bookmark
|
2022-07-14
|
  176 
Easy
0

What is the role of depressant in froth-floatation process?

Chemistry, quiz questions, Chemistry quiz-questions,
login and add your own answer to this question

All Answers

karamassaf
2022-07-14
need an explanation for this answer? contact us directly to get an explanation for this answer

The role of depressant is to prevent one type of sulphide ore particles from forming the froth with air bubbles. NaCN is used as a depressant to separate lead sulphide (PbS) ore from zinc sulphide (ZnS) ore. NaCN forms a zinc complex, Na2[Zn(CN)4] on the surface of ZnS thereby preventing it from the formation of the froth.
NCERT Solutions For Class 12 Chemistry Chapter 6 General Principles and Processes of Isolation of Elements Exercises Q2
In this condition, only lead sulphide forms froth and thus can be separated from zinc sulphide ore.

need an explanation for this answer? contact us directly to get an explanation for this answer

total answers (1)

Similar questions

need a help?

find thousands of online teachers now