| 摘要 |
A dry bulk cement storage and mixing system comprises one or more generally cylindrical storage tanks or bins having somewhat wedge shaped bottom discharge sections with tapered flight conveyor screws extending across the diameter of the bin at the convergence of opposed sloping sidewalls of the bottom section. The conveyor screw is connected to a pneumatic fluidizing plenum wherein compressed air is introduced into the plenum for conveying material to a mixer or recirculating the material back into a selected storage tank through a distributor device mounted on top of the tank which distributes the material to minimize segregation of smaller or less dense particles during discharge of the material into the storage tank. One embodiment of the storage tank is mounted for rotation about a generally horizontal axis and includes a transversely extending cement unloading and vent conduit extending within the tank chamber. Cement stored within a tank may be sampled by a device which includes an elongated tube extending through a sealable fitting for withdrawing samples of material for analysis of the material mixture within the tank.
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