LINE FOR PROCESSING HEN DUNG Russian patent published in 1994 - IPC

FIELD: fertilizers production. SUBSTANCE: line has units for preparing, pressing and drying the stock. They are placed in series with the first unit having tanks located in a coaxial relation to each other, the pressing unit being a screw press and the drying unit accommodating three fluidized bed driers. The unit for preparing the stock has inner vessel provided with perforations on its walls. The screw press body has inner perforated cylinder with a screw positioned inside it. The screw is provided with blades mounted on it with their variable pitch diminishing towards the press head the latter being a cone provided with variable-sized slots. The fluidized bed drier has a chamber which outlying section is in the form of a conic shell having a perforated bottom in it. EFFECT: top-quality fertilizer, increased productivity, low energy consumption.