Enhancing Direct Reduced Iron (DRI) for use in electric steelmaking
Direct Reduced Iron (DRI) is a valuable source of virgin iron for the electric steelmaking process. Its production is associated with less than half the CO2 emissions of blast furnace produced pig iron, but has a less favourable value in use and potential difficulties with transport and storage. Two concepts […]
AUMUND: Leading Technology Specialist in Hot Conveying and Cooling of Direct Reduction Products
As an international supplier of specialist conveying technology for metallurgical processes in the iron and non-iron smelting industry, AUMUND Fördertechnik GmbH is an established provider of solutions for handling hot, abrasive and chemically reactive bulk materials. Much of this innovative equipment has helped AUMUND to become a technological leader, with […]
MIDA Hybrid: a new milestone, solar-powered by Danieli
Digital controls for EAF melting and casting bring together efficiency, power, and flexibility for a new steelmaking scenario, that combines mini-mill technology, renewable energy and digital process control to achieve high yield, low emission steelmaking. Energy savings of up to 330kWh/t are possible with MIDA ECR and an additional 90kWh/t […]
Mitigating the emissions of acid pollutants from dry blast furnace gas cleaning plants
Given the improved operational economics and, in some areas, the physical or economic scarcity of water, steel producers are shifting towards the application of blast furnace gas cleaning systems, in which the wet scrubber has been replaced with a second, dry gas treatment stage. While in traditional systems, acid pollutants […]
Hydrogen flameless oxyfuel for CO2 free heating
To meet the challenge of CO2 emissions from burners and furnaces, such as during reheating, Linde has worked with Ovako to develop and demonstrate a green hydrogen oxyfuel combustion system. This system was tested in the laboratory and at a rolling mill and found to work safely and effectively, without […]
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 […]