Alumina and Bauxite System
Efficiency Improvements
for
Bauxilum’s Alumina Plant
|
=
Client<=
/p>
Han-Padr=
on
Associates, LLP
22 Cortland Street
New York, New York 10007
|
for
|
=
&nb=
sp;
CVG Baux=
ilum
Zona Industrial Materials
PTO Ordaz, Bolivar Venezuela
|
=
&nb=
sp;
Global M=
aterials
Services Venezuela
C.C. Torre Loreto II, Piso 3
Oficina 3, Puerto Ordaz
Estado Bolivar, Venezuela
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![3D"Text](3D"CVGBauxilumVenezuela_files/image004.gif")
Completion
Date
May,
2004
Project Description
As
part of CVG-Bauxilum’s initiative to improve plant efficiency and
production, the alumina and bauxite handling systems were examined. Working with the operating and
maintenance departments, system impediments were identified and investigate=
d. These were presented and examined =
by
CVG-Bauxilum in a series of meetings.
CVG-Bauxilum provided the necessary input and direction to focus the
investigation on those specific improvements that will best benefit plant
operations.
CVG
Bauxilum’s process improvement programs require a dependable and
continuous feed of raw material. A
continuous flow of bauxite and sufficient quantities of dry stockpiles are =
key
elements needed by the red side processing system, which is the raw material
feed system to the plant. In
addition, system interface bottlenecks had developed as plant production
increased and the source of raw material changed. As plant production and capabiliti=
es
increased, the interfaces within the material handling system became more
important. Equipment and syst=
em
components that were adequate for their original production level and
functional requirements had become bottlenecks at current the operating
tonnages. A variety of materi=
al handling
system improvements were examined to correct those bottlenecks that most ha=
mper
production.
Bauxite
system improvements included a bypass conveyor that would alleviate conflic=
ts
experienced for dual purpose system components, silo filling system improve=
ments
to eliminate system starts/stops during normal plant operations, and convey=
or
horsepower upgrades to alleviate overload conditions that were causing
emergency conveyor stop conditions.
Alumina
system improvements examined technologies that would increase the amount of
alumina that can be exported, reduce the amount of spillage and dust emissi=
on,
and eliminate a major cause of product contamination, which was a key conce=
rn
for customers. As part of this
investigation, both pipe belt conveyors and an air slide conveyor system we=
re
examined for the alumina improvements.
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