Pipe Conveyors
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Pipe Conveyors
An
extension to the use of Belt Conveyor System has resulted in the development
of pipe conveyors to transfer material from one point to the other which
are not possible with conventional conveyor systems.
Pipe Conveyor offers several advantages over conventional
conveyors:
Unlimited capability
for direct transfer of
materials between two points which is not
possible with conventional means.
Enclosed, clean and
environment friendly transportation eliminating all spillage, scattering
and return dropping of materials.
Elimination of transfer
points and non-exposure to atmosphere results in retention of material
properties while conveying.
Curvature possible
in both horizontal and vertical planes associated with steeper angle
of inclination.
Possibility of transporting
second material through the return side pipe of the system, thereby
reducing capital and operating cost.
Overall savings in
space requirement, structural and foundation cost, thereby making the
investment decisions easier.
Even a horizontal
angle of 90 degree possible with the current technology.
The tail end, material receiving area and discharge area of the pipe conveyor
is similar to that of a conventional belt conveyor. The flat belt after
the tail pulley is slowly shaped to the trough belt through 10 & 20
degree transition and 30 degree carrying idlers. At the end of loading zone,
the process of pipe formation is gradually achieved sequentially in steps
from the trough shape with 45 degree idlers, variable off set rollers, finger
rollers and pipe forming idlers.
In the straight portion of a pipe conveyor, without any vertical or horizontal
curves, the bottom three rollers at the carrying side support the belt and
material load whereas the top three rollers maintain the belt in its pipe
shape. At the horizontal and vertical curved sections, the other rollers
of the pipe forming idlers surrounding the belt support the load depending
on the direction of the resultant force at the curved portion while the
remaining rollers maintain the belt in pipe shape. The same applies to the
bottom or return belt side of the pipe conveyor.
Macmet has supplied several pipe conveyor systems to various customers in
India.
Macmet supplied a 2.4 km long Pipe Conveyor for the Chaibasa Unit of ACC
Ltd. The Pipe Conveyor is partly laid out on the existing railway tracks
leading from the mines to the plant. It is the longest Pipe Conveyor using
EP Belting. It conveys 1000 Tons of Limestone from mines to the plant.
Macmet is presently executing Order from Jindal Power Limited to design,
engineer, install and commission a 7 km Pipe Conveyor for their O. P. Jindal
Super Thermal Power Plant (4 x 250 MW) in Chhattisgarh. Once commissioned,
this will be the biggest capacity Pipe Conveyor in the world.
The Pipe Conveyor will transport 1500 tons of coal per hour to the power
plant from Jindal’s captive mine. The pipe belt used for carrying this load
will have a diameter of 500 mm, and will be made from the highest rated
steelcord belting (ST1800) when compared to the ones used till date for
pipe conveyors worldwide (having a maximum rating of ST 1250).
The Pipe Conveyor will supply the total coal requirement for the 1000 MW
Power Plant in the most environmentally friendly way. The Pipe Conveyor
will travel through four villages and span a river and pass over agricultural
land without any spillage or pollution of the environment.
| 1 |
ACC Ltd (Madukkarai) |
Carrying Coal |
| 2 |
ACC Ltd. (Chaibasa) |
Carrying Limestone |
| 3 |
ACC Ltd. (Gagal) |
Carrying Flyash |
| 4 |
Jindal (Bellary) |
Carrying Iron OreConc. |
| 5 |
ACC Ltd. (Sindhri) |
Carrying Cement |
| 6 |
Jindal (Bellary) |
Carrying Sinter |
| 7 |
Jindal (Raigarh) |
Carrying Coal |
| 8 |
TISCO (Jamshedpur) |
Carrying BF Dust |
