The most used method for the disposal of phosphates tailings is through of tailing dams conventional. The tailing disposal in the form of mineral paste has advantages compared with the disposal conventional. The objective of this work is the production and characterization of mineral pastes from phosphates sludges using a thickener in laboratory scale. The main results were: a) the specific gravity of solid material: 2.61 g/cm3; b) sludge 100% < 30 µm; c) the chemical analysis indicated the principals presence of magnesium, calcium, phosphorus and oxygen; d) the mineralogy detected the presence calcite and dolomite as main phases; e) sample showed high value of the superficial specific area through Blaine method was 0.976 m2/g; f) the thickening tests time required for maximum compression point of phosphate mud without the use of flocculant was 7,200 s; g) the tests continuous sedimentation using recirculation and the use of flocculant selected increased by approximately 6% solids in the underflow; h) a transition stage of high slurry density to mineral paste in the range between 55% and 58% solids was observed; i) concerning to generations of flocs, the FGR system presented a discharge more dense of solids concentration in all operational range; j) an increase of around 7% solids in the underflow was noted using rake system; k) with the best operational conditions in the equipment were obtained paste minerals of 70% solids; l) the yield stress of phosphate sludge showed values greater than 80 Pa from 65% solids characteristic of mineral paste.