Improved process of separation of coal and sterile in a carbonifera extraction.

摘要

Improved process coal separation and sterile in a coal extraction. The consisteesencialmente procedure in making a densimetric all-one ore mined in so in a flotation basin, containing a controlled density dense medium (between 1.35 to 1.60 g / cm {sup, 3), the material is poured tratarproduciéndose the coal flotation, with an average density of 1.25 g / cm {sup, 3, and sedimentation of sterile, with an average density of 2.5 g / cm {sup ,3 . Coal floated portion is collected on the surface of the raft with a mechanical means, washed with water and drained, obteniéndoseel salable coal. The sedimented portion (sterile) were mechanically removed continuously, taking lasescombreras.El product used for forming the dense medium in the flotation basin is a clay loam obtained together with coal in the extracted material in mina.El procedure is used to treat coal fields materialesextraídosen Segre low.