Extraction equipment

　　Drag chain leacher said again dragged chain scraper leacher, look from the structural form and crawler leacher was similar, also can be regarded as a circular leacher derivatives, equivalent to cancel the bending section,

　　to the lower level of separation of ring structure merged into a box structure. Its leaching principle with annular leacher similar, although cancelled the bending section,

　　but the material from the upper left, lower in turn institution can make the material under the action of turning completely, so also can guarantee good permeability and permeability, oil residue can reach 0.6% ~ 0.8% in practice.

　　Because there is no bending section, drag chain leacher overall height than circular leacher reduce many.