Direct flotation of low-grade Moroccan phosphate ores: a,
Moroccan high-grade phosphate has so far always been upgraded by reverse flotation. Within a major project to go back to the deposits considered as sterile or low grade, this preliminary study was conducted in a micro-flotation cell to find new routes for their beneficiation by direct flotation. Three collectors, alone and combined to modifiers, were evaluated for a potential direct flotation,Introduction of Phosphate Ore Flotation Equipment - Xinhai,Generally, low-grade phosphate ore often contains high gangue minerals content in China, and the phosphate ores are closely associated with gangue minerals, so flotation process is the most effective separating method, which can be divided into six kinds of flotation processes: direct positive flotation, single reverse flotation, reverse-direct flotation, direct-reverse flotation, double,A New Approach for Reverse Flotation of Magnesite From,,It was found that sodium silicate selectively depressed magnesite at pH 4.5 – 7.5. The separation of magnesite from dolomite was achieved in a reverse flotation which resulted in a 76.1 per cent yield of magnesite with a grade of 47.3 per cent at 100 ppm dodecyl phosphate and 75 ppm sodium silicate.