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Separation of tungsten and tin by flotation

2023-05-15 Xinhai (225)

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The separation of tungsten and tin by flotation is a complex process due to the similarities in their chemical and physical properties. However, with the right conditions and flotation reagents, it is possible to separate the two minerals.

The flotation process involves adding a collector agent to the slurry, which selectively binds to the mineral particles of interest. In the case of tungsten and tin, the collector agent typically used is a fatty acid or a derivative of it. This agent will bind to the tungsten minerals and allow for their separation from the tin minerals.

Next, a depressant agent is added to the slurry, which will prevent the collector agent from binding to the unwanted minerals. In the case of tungsten and tin, the depressant agent typically used is sodium silicate. This agent will prevent the collector agent from binding to the tin minerals and allow for their separation from the tungsten minerals.

After the collector and depressant agents have been added, the slurry is agitated to create a froth. The froth is then skimmed off, and the minerals of interest are separated from the rest of the slurry.

It is important to note that the conditions of the flotation process can greatly affect the separation of tungsten and tin. Factors such as pH, temperature, and agitation speed can all have an impact on the effectiveness of the separation. Therefore, it is essential to optimize these conditions to achieve the desired separation efficiency.

In conclusion, the separation of tungsten and tin by flotation is a challenging process due to the similarities in their properties. However, with the use of appropriate collector and depressant agents, along with optimized flotation conditions, it is possible to achieve an effective separation.


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