FASTMET© & FASTMELT©

FASTMET© is a DRI production process and uses a rotary hearth furnace (RHF). Nowadays, this technology found its niche in recovering valuable products out of steel mill byproducts. In the FASTMET© process, carbon contained in the wastes or added as coal, charcoal, or coke is used as the reductant. The iron-bearing materials, reductant, and a binder are mixed and either pelletized or briquetted (www.midrex.com). The pellets/briquettes are fed into a RHF in one or two layers. They are heated rapidly to maximum 1,350°C to be reduced within 6 to 12 minutes of dwell time and are discharged outside the furnace. The CO gas generated from the pellets/ briquettes is used as the fuel of the RHF and significantly reduces the fuel burnt by the burner (Harada et al., 2005).

The FASTMELT® process utilizes the same basic flowsheet and equipment as FASTMET®, but includes a melter to produce hot metal. Hot DRI is discharged from the RHF and melted in an electric furnace or coal-based melter. Through such melting, the process separates the ash and sulphur content – which migrate from coal and waste materials to reduced iron – as slag, and produces desulphurized and purer hot metal.

Development Status Products
Commercial
DRI

FASTMET© & FASTMELT©Costs & Benefits

Parent Process: Direct Reduced Iron
Energy Savings Potential

Energy consumption of the technology is 12.3 GJ/t-HM (APP, 2010. p.53).

CO2 Emission Reduction Potential

Fastmet process reduces CO2 emissions by 1,24 t/t-HM (APP, 2010. p. 53). 

Costs

FASTMET© & FASTMELT©Schematic

FASTMET© & FASTMELT© Publications

The State–of-the-Art Clean Technologies (SOACT) for Steelmaking Handbook

 

The State–of-the-Art Clean Technologies (SOACT) for Steelmaking Handbook is developed as part of the Asia-Pacific Partnership on Clean Development and Climate program and seeks to catalog the best available technologies and practices to save energy and reduce environmental impacts in the steel industry. Its purpose is to share information about commercialized or emerging technologies and practices that are currently available to increase energy efficiency and environmental performance. 

Page Number: 

53

FASTMET© & FASTMELT© Presentations

Page Number: 

2-4

FASTMET© & FASTMELT© Resources