A study has been conducted on the flotation concentration of sedimentary phosphorite from Sierra Espuna,in the province of Murcia (Spain),using a Denver D-12 mechanical subaeration cell.First,the mineral was pretreated through grinding,sorting and discarding slimes.The effect on flotation of pH,collector concentration,particle size and flotation time was then analyzed.The results achieved show that a neutral or slightly alkaline pH and short flotation times promote the concentration of sedimentary phosphorite.
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