News
& Information
March
25, 2000 Houston, Texas USA |
Contact: Trans-Global Solutions,
Inc.
Jim
Hartley - 713 466 0426
Trans-Global
Solutions Leads
Curved-Belt Conveyor Technology
Trans-Global
Solutions, Inc. (TGS) of Houston, Texas has commissioned a new
horizontal-curve conveyor for Abitibi-Consolidated Inc. newsprint mill in
Sheldon, Texas. The system was designed, engineered, fabricated and erected by
TGS in joint venture with Continental Conveyor & Machine Works
of Thetford Mines, Canada.

The
curved conveyor system solves several problems for Abitibi Paper. The system
connects the de-inking plant with the newsprint mill, a distance of
approximately 2,000 feet. The use of a traditional straight conveying system
would have required three or four transfer stations in order to align correctly
with the required termination point while avoiding existing structures. By
curving the conveyor through five horizontal curves TGS/Continental
was able to eliminate all transfer points.
The
elimination of transfer points resulted in several benefits:
-
Reduced
fabrication costs
-
Reduced
fabrication time
-
Reduced construction time
-
Reduced construction costs
-
More efficient
transportation of a wet, sticky product
-
Reduced spillage
of product
-
Improved safety
-
Reduced
maintenance costs
The material transported by the
covered, curved conveyor is de-inked paper pulp from the de-inking plant. The
material ranges from 30 to 60 pounds per cubic foot.
The conveyor is described as Continental/
TGS "CurveBelt". It is a 42 inch wide curved belt conveyor with a
length of nearly 2,000 feet and a maximum lift of 35 feet. It is capable of
handling 170 tons/hour of de-watered pulp at a temperature of no more than 125
degrees F. While the "CurveBelt" system is ideal for this application, it is
also very adaptable to other materials. It should be noted that the system is
particularly suited to dry, dusty products. The elimination of transfer points
is especially useful in controlling fugitive dust emissions and noise from
transfer points.
The curved sections of the
conveyor system include one horizontal left hand curve on a 394 foot radius at
230, one horizontal left hand curve on a 492 foot radius at 260, one horizontal
right hand curve on a 590 foot radius at 260, one horizontal right hand curve
on a 722 foot radius at 220 and one horizontal right hand curve on a 984 foot
radius at 100. A 60 HP motor drives the system with a belt speed of
approximately 300 feet per minute.
The conveyor system is covered
and equipped with belt wipers and a belt wash system with spray nozzles at both
the head and tail end.
Continental Conveyor and Machine
Works of Canada supplied all idlers for the system including 280 special
tilting style troughing idlers for curved areas and 140 special tilting style
return idlers, also for curved portions of the conveyor. All idlers meet CEMA
C5 classification. The conveyor belt, supplied from France, is a 42 inch wide
SFBT/Semperit MultiTrans EP500/3 molded edge fabric belt with a modulus of
elasticity specifically suited to the horizontal and vertical curve
requirements of the system.
System design, and engineering
was performed by TGS/Engineering & Conveying Systems, a
division of TGS, located in Houston, Texas. The design was
done in cooperation with Continental Conveyor & Machine Works. The conveyor
system was fabricated at the TGS/Engineering & Conveying Systems
facility in Houston.
Construction, erection, and
testing of the system were accomplished by TGS/Construction & Erection,
also a division of TGS. The construction and erection of the
system was complicated by the fact that the system crosses several railroad
tracks, including a Union Pacific mainline, several roadways and is elevated
over 35 feet for its entire length. The system was also required to integrate
with existing structures and operations.
The system is part of a $102
million dollar (US) expansion and modernization of Abitibi-Consolidated's
newsprint mill near Houston, Texas. The project includes a 265,000 ton per year
expansion of the mill's existing de-inking/recycling facility, enabling Abitibi
to divert over one-half million tons of paper per year from municipal solid
waste streams. In addition, the expansion will eliminate the Sheldon mill's
groundwood and kraft pulping mills, resulting in a significant reduction in air
and wastewater emissions.
The de-inking expansion will more
than double the supply of de-inked pulp available to the newsprint mill.
Abitibi-Consolidated's improvements to the mill's paper machines will result in
a higher quality sheet of paper and will accommodate the increased use of
recycled pulp. Upon completion, the recycled content of the mill's newsprint
will average 85 percent. The expansion project will increase the overall
paper-recycling rate in Texas from an estimated 50 percent to 65 percent.
The de-inking expansion will more
than double the supply of de-inked pulp available to the newsprint mill.
Abitibi's improvements to the mill's paper machines will result in a higher
quality sheet of paper and will accommodate the increased use of recycled pulp.
Upon completion, the recycled content of the mill's newsprint will average 85
percent. The expansion project will increase the overall paper-recycling rate
in Texas from an estimated 50 percent to 65 percent.
TGS, together
with Continental Conveyor & Machine Works and Abitibi Consolidated, is
proud to have been a part of the team that has brought this new technology to
such an important project. The success of this system is helping bring cleaner
air and water to the community near the plant, improved competitiveness of the
Abitibi newsprint mill, and the recycling of over one-half million tons of
waste paper that would have otherwise consumed critical and expensive landfill
space.
Trans-Global Solutions is a
Direct Solutions Provider to industry worldwide. The company specializes in
total bulk material services, railroad and port systems. More information about
this project and other TGS projects and operations can be
found at the company's website: www.tgsgroup.com
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