Activators are those chemicals which help buoying up one mineral in preference to the other in the froth floatation process. Which of the following is an activator ?
Correct answer: D. Copper sulphate
- A. Cresylic acid
- B. Sodium carbonate
- C. Calcium carbonate
- D. Copper sulphate
Explanation
Copper sulphate is a classic activator in froth flotation, especially for activating sphalerite so it can respond to collectors. Cresylic acid is commonly a frother, while carbonate reagents mainly adjust alkalinity or pH.
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