mineral processing technology and mineral processing equipment

In mineral processing plant ,a number of organic and inorganic reagents are used in flotation and auxiliary processes to achieve separation, including collectors, frothers, extenders, activators, depressants, deactivators, flocculants, and dispersants. Collectors, frothers, and extenders are surfactants added to impart hydrophobicity to the minerals and to make selective adsorption of the collector possible or to eliminate interference to flotation by various dissolved or colloidal species. We discuss collectors this time. Collectors The primary role of the collector is to adsorb selectively, which imparts hydrophobicity to particles of the mineral to be floated. If it is to have the dual ability to adsorb and to impart hydrophobicity, the collector molecule must contain at least two functional parts, a nonpolar group of sufficient hydrophobicity and a polar or ionic group that will be electrostatically or chemically reactive toward species on the mineral surface. The nonpolar pa...

Sinonine deeply know that in a beaker of water, if air is introduced from the bottom, air bubbles are produced  and rise to the surface of the water as the density of an air bubble is much less than that of water (Figure.1 A). Similarly air bubbles also rise if air is introduced in a pulp containing mineral particles. If a mineral particle of high density adheres to the air bubble, the air bubble along with the mineral particle rises to the surface because the apparent density of the air bubble and the adhered mineral particle is less than that of water. If many mineral particles are adhered to the air bubble, still the air bubble rises to the surface as the apparent density of the air bubble and adhered mineral particles is less than that of water due to the relatively large volume of the air bubble Figure 1 B). This concept is the basis for froth flotation operation. To use this concept or phenomenon, the following are required: 1 Met...