10 Questions
What is the primary role of collectors in the froth floatation process?
To increase the contact angle so that bubbles will adhere to the surface
Why is it necessary to use different classes of collectors for different minerals?
Because of their different ionic charges
What are the three main categories of collectors based on their ionic charge?
Non-ionic, anionic, and cationic
What is the non-polar part of anionic and cationic collectors responsible for?
Making the surface hydrophobic
What are the two ways of adsorption of collectors?
Chemisorption and Physisorption
What is the key difference between chemisorption and physisorption?
Chemisorption is a highly specific and irreversible process, while physisorption is less selective and reversible
Why should collectors be used in very small concentrations?
Because high concentrations can lead to reduced recovery of valuables, increased cost, and reduced selectivity
What is the effect of multi-collector layers on the surface of minerals?
It reduces the proportion of hydrocarbon part oriented towards the bulk solutions, reducing hydrophobicity
What is the role of frothers in the mining industry?
They are widely used in froth floatation
What is the main advantage of chemisorption over physisorption?
It is a more selective process
Floatation is a crucial mineral separation technique used to treat low-grade and complex ore bodies. It has expanded to cover new areas and is now used to treat various minerals, including copper, lead, and zinc. This technique has made it possible to mine ore bodies that were previously considered uneconomic.
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