In May 2006, global steel producer Tata
awarded a contract to Tenova Pyromet for the Tata KZN Project. The plant is
located in Richardsbay Kwa Zulu Natal South Africa
The project was for design, supply,
installation and commissioning of 2 x 36-MVA closed submerged arc furnaces. A
submerged arc furnace is a type of electric arc furnace (EAF) in which the
electrodes are buried deep inside the furnace burden or load. In a normal EAF,
the electrodes hover slightly above the load to induce the arc.
Scope: A complete furnace technology
package for 2x submerged arc furnaces including the plant control system, with
electrical and mechanical equipment. The scope also included the entire
gas-cleaning scrubber system for the furnace off gas, as well as the tap hole
fume extraction system.
Commissioning of both furnaces was
successful as the first furnace was commissioned in April 2008, and the second furnace in May 2008.
The smelter incorporates the following
technology:
· Pyromet submerged arc closed
furnace technology
· Pyromet patented electrode
columns
· Complete plant automation
system designed by Pyromet
· Pyromet designed furnace
off-gas scrubbers, two per furnace
Challenges Overcome
One of the major challenges was the correct
process design of the furnaces with the design requiring that the furnaces
treat chrome ore briquettes. The ore used to prepare the briquettes would be
sourced from India
The logistical challenge of doing a project
in Richards Bay
The quality of the off gas cleaning system
complies with a very strict environmental requirement due to the location of
the plant in close proximity to a residential area as well as the strict
environmental bylaws governing the area which is an ecological preserved area.
The furnace building structure was supplied
from India
The site team had to endure coastal
conditions where wind, rain and sandy terrain complicated planning and
execution of certain tasks.
Project Statistics
Concrete: 12
000 rn'
Steel structures: 4800 tons
Construction man-hours: > 1 million
Pyromet project team: 9 persons
Project site team: 25 persons
Furnace produces: 133 000 tons per annum
Furnace capacity: 142 857 tons per annum
Furnace type: Closed Furnace
Project duration: 24 Months - April 2006 to
April 2008
Tenova PYROMET
Tenova Pyromet (Pty) Ltd
Parktown, Johannesburg
2107 South Africa
Phone +27 11 480 2000
Fax +27 11 482 1942
E-mail: pyromet at za dot tenovagroup dot com
NOVA Analytical Systems
1-800-295-3771
sales at nova-gas dot com
websales at nova-gas dot com
1 comment:
As I think of the Mayville Iron Works, and its two blast furnaces and coke plant which were demolished not
long after that iron works closed in 1928, I'm grateful for this amazing site which still stands.
Here are the Carrie Furnaces outside of Pittsburgh, with two 200 feet high blast furnaces, hot blast stoves
and beautiful smokestack.
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