Tuesday 14 November 2017

Selecting an assortment of flotation reagents depends on the equipment!

On Plant A realized a modern technology of ore flotation (Cu, Mo, Au). The technology provides the classification of the original feed in hydrocyclones and separate flotation of underflow product (coarse) and overflow product (fine fractions).

In the hydrocyclone, a separation occurs not only by particle size, but also by density.
Porphyry ores contain approximately 90% silicates. Silicates have a density  (from 2000 to 4700
kg/m3). In the hydrocyclone, separation of silicates occurs by density. Also, the gold particles can accumulate in the underflow product (coarse).

As a result, when coarse and fine fractions coming to flotation, they are differ in composition and have their own flotation properties. This means that the flotation of coarse must use one type of conditioners and the flotation of fine fractions need to use another type of conditioners (and promoters).


Using optimal conditioners (and promoters) for each of the products can significantly improve the recovery of gold, copper and molybdenum, while maintaining the quality of concentrates.



CONCENTRATION OF MINERALS

Ph.D. Natalia Petrovskaya

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