Direct reduction ironmaking in North Africa
North Africa is emerging as a focal point of direct reduction-based ironmaking. Algeria and Egypt are transitioning from the blast furnace/basic oxygen furnace (BF/BOF) steel production route to take advantage of the economy of scale of EAF-based steelmaking and the operating cost advantages of producing and using direct reduced iron […]
How to prevent the blast furnace tuyere from burning through
The service life of the blast furnace tuyere directly affects production. Burning through of the tuyere, caused by leakage, can be one of the most serious safety incidents in blast furnace ironmaking, with serious consequences. Tuyere abrasion may also increase as blast furnace productivity increases. If tuyere protection is improperly […]
Operational assistance and process support: how to secure know-how and experience regarding special situations in blast furnace ironmaking
The highly dynamic economic climate of recent years has tightened the operating envelope for steel producers worldwide. Steel producers continue to experience immense pressure to respond quickly to changing circumstances and the focus has shifted towards efficiency improvement and maximizing flexibility in operations. The ability to safely stop, restart and […]
Arvedi ESP: reaching maturity in endless casting and rolling technology
Arvedi ESP, developed by Acciaieria Arvedi and designed, manufactured and sold by Primetals Technologies, has proven its capability to realize production of steel plates, with excellent properties at a minimum production cost, through continuous casting and rolling in endless mode operation. This paper describes the structure of the Arvedi ESP […]
Types, causes and prevention of breakouts during continuous casting
Breakouts on the continuous casting machine can be an unfortunate feature of operations and one which it can be difficult to avoid entirely. This paper gives an overview of the key features of the main types of breakout and describes measures that can be taken to reduce their incidence. Recommendations […]
Ruhrstahl-Heraeus process with mechanical vacuum pumps: absurdity or red-hot technology and money well spent?
After a hesitant start to the replacement of steam ejectors in steel degassing with mechanical vacuum pumps, the latter have become state of the art in vacuum degassing and increasingly in vacuum oxygen de-carburization installations. While there may have been early concerns about the mechanical vacuum pump’s suitability for production, […]
The new benchmark heavy-plate mill project at Nucor Steel Brandenburg
The Danieli 175in wide (4,450mm) heavy plate/Steckel allows for fl exible production of heavy and light plates, and jumbo coils. The consolidated global tendency toward green power generation investments, especially hydro power and wind power, offers new development opportunities for the steel plate market. Heavy plates of 3in to 14in […]
Long and awkward loads – handle them safely
Safe and cost effective materials handling is a crucial aspect of any business. This is especially true of the steel industry, where products are typically heavy, long, or oversized and therefore potentially dangerous if not handled correctly.
Sawing instead of groove turning: Ground breaking concept boosts material efficiency in ring rolling, with three machines in one
Dango & Dienenthal has developed an innovative ring cutting machine, RTM, which cuts rolled ring sleeves into individual rings by sawing. Thanks to this new process, material use and machining time in ring rolling can be dramatically reduced. The basic machine can be upgraded to a full line machining centre […]
Eco-friendly acid regeneration
As a leader in the acid regeneration market segment, John Cockerill offers a modular design that guarantees its clients the optimal solution for all their individual process requirements and applications, with acid recovery rates of virtually 100%.