鉄鋼生産には、世界で最もエネルギー集約的なプロセスが含まれます。 したがって、エネルギー効率の高い技術を適用し、廃熱を効果的に放散することが重要です。 そのため、鉄鋼メーカーは、専門知識、実証済みの機器とサービスの幅広いポートフォリオ、最適化された熱効率と運用効率、総運用コストの削減、生産性の向上をアルファラバルに依存しています。
On the pulse of steel production
Rising costs, greater energy efficiency, and more stringent environmental regulations are prompting steel producers to look for new ways to save money, increase uptime, and raise yields. Alfa Laval has a broad range of smart, energy-saving solutions to improve overall efficiency of your steel mill operations.
Closed loop cooling systems
Well-designed cooling systems are vital given the complex processes and operating conditions encountered in blast, basic oxygen and electric arc furnaces, direct reduction plants and continuous casting machinery.
In a closed-loop cooling system, high-quality water is cooled in a secondary cooling system, which consists of plate heat exchangers cooled by seawater, river water or a water from a nearby cooling tower, which:
- Reduces maintenance due to the use of easy-to-maintain Alfa Laval plate heat exchangers
- Lowers pumping costs because pumps only need to overcome the static head of the process equipment rather than the full cooling tower
An effective alternative to cooling towers, Alfa Laval air coolers combine high efficiency with low electricity consumption and noise levels. Closed-loop air cooling systems eliminate both the problems and costs associated with water treatment.
Alfa Laval plate heat exchangers are an efficient and compact alternative to traditional shell-and-tube heat exchangers used in cooling transformer oil, morg oil, lubricating oil and gear oil. What’s more, our specially developed double-wall plate heat exchanger eliminates the risk of cross mixing of any lubricating fluids and cooling media during the process, thereby preventing costly consequences.
Dust and sludge removal
Dust and sludge recovered throughout various steel processes by means of centrifugal separation can be highly corrosive and abrasive. Alfa Laval separation technologies are designed with corrosion- and wear-resistant materials to ensure continuous operation in the harshest environments.
Outokumpu ferrochrome plant, Finland
The highly abrasive and sticky nature of the sludge from one of the gas scrubbers at Outokumpu makes it very challenging to dewater. The plant has used Alfa Laval decanters for this task for many years and since 2012 three Alfa Laval P2-600 decanter centrifuges dewater the sludge. The plant personnel are very satisfied with the high cake dryness.