TPT July 2016

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July 2016 21
I NDUS T RY
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Primetals modernises twin electric arc furnace
PRIMETALS Technologies has won
an order from China’s Baoshan Iron &
Steel Co Ltd (Baosteel) to modernise a
more than 20-year-old DC twin electric
arc furnace at its Shanghai plant. The
project involves redesigning both the
upper and lower vessels and installing
new anodes in each case.
Improved power efficiency reduces
production costs, and raw materials can
be used more flexibly. It will therefore be
possible in future to operate the electric
arc furnace with a hot metal content of
up to 90 per cent. Modernisation work
is scheduled for completion by the end
of 2016.
In 2014, the Baosteel Group’s annual
steel production was more than 43
million metric tons. The company
manufactures products for the domestic
and international markets.
The twin electric arc furnace has a
tapping weight of 150 metric tons and is
part of a production line on which billets
and long products are manufactured for
use as structural steels.
Under the modernisation project,
Primetals Technologies will be
engineering, manufacturing and
supplying essential components.
The upper vessels with their water-
cooled wall panels will be completely
redesigned, and the lower sections
will each be equipped with a new, air-
cooled FIN anode. The guaranteed
anode durability is more than 1,500
melts. Primetals is also responsible
for monitoring the installation and
commissioning work.
Primetals Technologies Ltd – UK
Website:
The twin electric arc furnace at Baosteel in
Shanghai will be modernised by Primetals
Technologies by the end of 2016 Hobas GRP
manholes win
product test
IN a recent review of manhole
rehabilitation products and methods
by the IKT Institute (institute for
underground infrastructure, Stuttgart,
Germany), the Austrian company
Hobas came out on top.
13 different rehabilitation systems
were tested, which involved the
renovation of a 5m-high concrete
manhole, DN 1000. The providers were
asked to re-establish the manhole’s
leak-tightness and structural integrity.
The individual approaches were then
examined and the rehabilitated shafts
exposed to long- and short-term
groundwater pressure.
With an overall score of ‘Good’
(1.6, German grading system from 1
to 6, with 1 being best), Hobas GRP
manholes were the test winners.
Hobas Engineering GmbH – Austria
Website: