Steel Market 01 / 2020
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Industry & Technology<br />
News<br />
Hot metal desfurization and dedusting system successfully<br />
commissioned at ArcelorMittal Monlevade<br />
ArcelorMittal Monlevade has commenced operation<br />
of a 130-tonne-hot-metal desulfurization station<br />
(DeS) and a new dedusting system supplied by Primetals<br />
Technologies. The desulfurization station represents<br />
the first installation of Primetals Technologies<br />
combining a volumetric dosing device for Magnesium<br />
(Mg) and a pressure dispenser for Calcium Oxide<br />
(CaO). Low sulfur levels of lesser than 0.005%<br />
(50ppm) can be achieved. The consumption of desulfurization<br />
agents is significantly reduced and processing<br />
times are reduced to less than 30 minutes compared<br />
to treatment in a torpedo car. A handling system<br />
for 130-t-hot-metals ladles was also part of the<br />
project. The new equipment is part of an expansion<br />
and quality improvement program at ArcelorMittal<br />
Monlevade.<br />
Danieli to modernize the Algoma steel plate mill in Ontario<br />
Danieli, along with Danieli Automation<br />
and Danieli Taranis, are the<br />
supplier team chosen for a complete<br />
upgrade of the 166-in. wide plate<br />
mill of Algom a <strong>Steel</strong> in Sault Ste.<br />
Maire, Ontario. The project will allow<br />
Algoma to expand its product portfolio<br />
to include wider plate products,<br />
to better control shape and surface<br />
quality and to improve logistics –<br />
making it possible to offer enhanced<br />
ship on time performance. The plant<br />
will be completely re-automated by<br />
Danieli Automation from Level 0<br />
through to Level 2 systems. Along<br />
with new process equipment and new<br />
digital drives, this will allow Algoma to<br />
perform normalized – or controlled<br />
– rolling, so that it can supply new<br />
grades of plate to the shipbuilding,<br />
energy and bridge building sectors.<br />
Additionally, Danieli Taranis will provide<br />
engineering and post-commissioning<br />
support. Danieli’s scope of<br />
work will include an overhaul of the<br />
complete plant automation system<br />
and the installation of a new primary<br />
de-scaler, a new hot-leveler and a<br />
new cooling bed. A new dividing<br />
shear, piling system, ‚top-to-bottom‘<br />
automated inspection system and<br />
plate marking machine will upgrade<br />
the finishing area.<br />
New AOD converter torque retainer from SMS group<br />
For North American Stainless (NAS) in Ghent, Kentucky, SMS group has commissioned a torque retainer for<br />
the 160-tonne AOD converter no. 1. The aim of the revamp was to reduce the torque that had previously been<br />
causing uncontrolled vibrations and damage to the bull gear, bearings, and foundations of the converter drive<br />
during AOD converter operation. As a result, the uncontrolled vibrations in the gear unit and converter vessel<br />
were substantially reduced. The target values were achieved under production conditions shortly after commissioning.<br />
SMS group supplied the torque retainer as a compact electrohydraulic unit. The scope of supply also<br />
included the engineering, supervision of the erection and installation work, and technical assistance during<br />
commissioning. Both the cold and hot commissioning were completed jointly with the customer.<br />
First coil at Nucor <strong>Steel</strong> Gallatin‘s pickling and galvanizing line<br />
Pickling and galvanizing of the first coil in September<br />
2<strong>01</strong>9, marked the production start of the new »heatto-coat«<br />
process line at Nucor <strong>Steel</strong> Gallatin in Ghent,<br />
Kentucky. SMS group delivered the whole line, and<br />
notes that the »heat-to-coat« technology is characterized<br />
by the compact and operator-friendly U-shape<br />
design, the turbulence pickling system, the high-power<br />
inductive heating system, the FOEN galvanizing equipment<br />
and the Drever after-pot cooling system. The line<br />
is designed to produce 500,000 tonnes of galvanized<br />
hot strip per year with a maximum capacity of 180 tonnes<br />
per hour and a large strip cross section (up to 6.35<br />
millimeter thickness and up to 1,854 millimeter width),<br />
which sets a new standard in hot strip galvanizing. The<br />
»heat-to-coat« process based on SMS patented technology<br />
permits the production of galvanized steel strip<br />
with durable corrosion protection, an appealing visual<br />
appearance, as well as an increased mechanical<br />
load-capacity while still maintaining low production<br />
and investment costs, SMS group says.<br />
6 <strong>01</strong> | <strong>2020</strong>
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