The Submerged Arc Furnace (SAF) technology is continuously evolving toward the goal of bigger, safer, cleaner and more effective operations. Tenova Pyromet is supplying the industry with furnaces for ferroalloy smelting, base metal refining, slag cleaning, and waste product treatment.

Using a process control and optimization system first developed for EAFs, an advanced statistical methodology can predict end-point carbon from off-gas composition trends and process parameters.

The Energiron Process, based on the ZR scheme, is a major step in reducing the size and improving the efficiency of direct reduction plants.

Based in South Africa, Tenova Pyromet provides complete smelting plants for ferro-alloy production, as well as for base metal reduction, slag cleaning and alloy refining. The company has built many of the ferro-alloy furnaces operating in its home country – and notably 70% of the ferro-chrome furnaces built there in the last 20 years. Snapshots of the firm’s now international supply of equipment demonstrates the variety of plant now used by alloy producers around the world.

Article in Chinese - Tenova Goodfellow has developed its real-time off-gas measurement and control system - the Goodfellow expert furnace system optimization process (EFSOP®) - further and extended its use to BOFs. The system has already been proven in EAF steelmaking, with more than 300,000 heats analysed to date.

India is the world’s largest producer of DRI. However, 70% of this is produced via coal-based technologies which give inferior quality product and with more pollution than gas-based systems. An expansion of gas-based DRI production is envisaged as Indian steel output increases. Options for expansion include the ENERGIRON ZR process using both natural gas and coal gasification in modules ranging from 200kt/yr to 2Mt/yr, all of which provide a range of flexible process routes, including direct hot feeding to steel furnaces.

Like all areas of the steel industry, operators of submerged arc smelting plants are requiring higher productivity, safety and reliability, coupled with reductions in energy and pollution.Tenova Pyromet’s continuous improvement policy provides furnaces with a range of innovations addressing these requirements.

After more than 10 years of continuous operation, the Hytemp pneumatic transport system is considered by some in the industry to be the only proven hot transport system for DRI. Here, Tenova HYL presents the system’s main features and operating characteristics.

Article in Russian - The ‘intelligent electric arc furnace’, trademarked iEAF™ is an innovative automation system, based on continuous, real-time process measurements and online process models, developed for the dynamic control and optimisation of the electric arc furnace (EAF).

Article in Chinese - The ‘intelligent electric arc furnace’, trademarked iEAF™ is an innovative automation system, based on continuous, real-time process measurements and online process models, developed for the dynamic control and optimisation of the electric arc furnace (EAF).