Froth Depth Solid Separation

The froth level maintained within the column is highly variable depending on the application. Some vessels may be operated with no froth, such as oil-water separators, or mineral columns operating on very large particles. In other cases, like molybdenite flotation, a froth as deep as 1.5 m may be run to ensure minimal entrainment and high selectivity. In general, a deep froth gives more opportunities for grade/recovery control and compensates for poor washwater distribution. Froth depth in mineral (solid-solid separation) column Sotation typically varies from 15 to 300 cm. The gas hold-up in froth gradually increases upwards due to froth sineresis and drainage along plateau canals. The entrained Rne particles return back to the lower (collection) section of the column by net downward liquid Sow in the froth (in the case of positive bias). Experimental data conRrm that, in some cases, upgrading of the product occurs mainly in the froth zone, and not at the collection stage.

It is important to note that an increase in froth depth decreases the volume of the remainder of the column which may be detrimental to overall performance.

Solar Panel Basics

Solar Panel Basics

Global warming is a huge problem which will significantly affect every country in the world. Many people all over the world are trying to do whatever they can to help combat the effects of global warming. One of the ways that people can fight global warming is to reduce their dependence on non-renewable energy sources like oil and petroleum based products.

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