What are froth stabilizers ? Give two examples.

Answer

### Step-by-Step Solution:

1. **Definition of Froth Stabilizers**:
Froth stabilizers are chemical agents used in the froth flotation process, which is a method for separating hydrophobic materials from hydrophilic ones. They help to stabilize the froth formed during the flotation process, ensuring that valuable minerals are effectively separated from the ore.

2. **Function of Froth Stabilizers**:
The primary function of froth stabilizers is to maintain the stability of the froth layer that forms on the surface of the flotation cell. This stability is crucial because it allows for the efficient collection of the minerals that are being targeted for extraction.

3. **Examples of Froth Stabilizers**:
Two common examples of froth stabilizers are:
- **Cresol**: A chemical compound that helps in stabilizing the froth during the flotation process.
- **Aniline**: Another chemical agent that serves the same purpose of stabilizing the froth in the flotation process.

4. **Importance of Froth Stabilizers**:
The use of froth stabilizers is important in the mining and mineral processing industries as they enhance the efficiency of the flotation process, leading to better recovery rates of valuable minerals.