technical and economic study of drying and granulation of ... - Helcom

( 100 Wn
) mn
mcn
, kg
100 Wcn
( 100 70)
2000
m cn
681,
81 kg,
100 12
where W n is raw manure moisture, W n = 70 %
Wcn is dried manure moisture, W cn = 12 %.
m is raw manure mass.
n
The output of every drying cylinder is 0.682 t/h of manure with 12 % moisture content. The total
output of two cylinders is 1,36 t/h.
After having been dried the chicken manure is taken to the mixer hopper (pos. 5), where other
necessary mineral or biological components are simultaneously supplied by the screw feeder УКП-106 (pos.
6). The components are added to produce the complex organic and mineral fertilizers with different
nutrients and microelements content required by particular crops.
No. Type of operation Model
5
Uniform mixing of dry
manure with other
required components
No. Type of operation Model
6
Dosed supply of
required components to
the mixer hopper
Table 9. Specifications of mixer hopper
Number
of units
Throughput, t/h
Installed power,
kW
1 3 2.2
Table 10. Specifications of a screw feeder of additives
Number of
units
Throughput, t/h
Installed power,
kW
УКП-106 1 0,2-3 2.2
In the mixer hopper (pos. 5) the homogeneous substance is produced, which is taken by LM/LG-60
conveyor (pos. 7) to the bin of ОГМ-6 press-granulator (pos. 8). The substance is pressed through the holes
of the press-granulator matrix and then cut off by the shear mechanism. As a result granules with required
physical and granulometric parameters (density, length, diameter, etc.) are formed. It is possible to produce
granules with the diameter of 6, 8 and 10 mm.
No. Type of operation Model
7
Supply of
material from the
mixer hopper to
the pressgranulator
bin
Table 11. Specifications of granulator loading conveyor
Number
of units
Productivity,
t/h
Installed power, kW
ЛМ/ЛГ-60 2 6 3