In a Japanese plant, hot charging has reduced specific fuel consumption in the heating furnace by 0.21 GJ/t-product (NEDO, 2008. p. 86)
http://www.epa.gov/nsr/ghgdocs/ironsteel.pdf
Hot Charging
Charging slabs at an elevated temperature into the reheating furnace of the hot rolling mill will save energy. In addition hot charging improves material quality, reduces material losses, enhances productivity (by up to 6%), and may reduce slab stocking.
The layout of the plant will affect the feasibility of hot charging because the caster and reheating furnace should be located in proximity to one another to avoid a long, hot connection between the two.
| Development Status | Products |
|---|---|
|
Commercial
|
Rolled steel
|
Hot ChargingCosts & Benefits
| Parent Process: Rolling Mills | |
|---|---|
| Energy Savings Potential |
Energy savings of 0.06 GJ/t-rolled steel are estimated (US EPA, 2010. p.27).
|
| CO2 Emission Reduction Potential |
Emissions reduction potential is estimated to be 30.2 Kg CO2/t-rolled steel. |
| Costs |
Retrofit capital costs and savings are estimated as $23.5/t-rolled steel and $1.15/t-hot charged steel with payback times of 5.9 years (US EPA, 2010. p.27).
|
Hot Charging Publications
Available and Emerging Technologies for Reducing Greenhouse Gas Emissions from the Iron and Steel Industry
Page Number:
10, 27
Hot Charge of Continuously Cast Slabs in Reheating Furnaces
Date:
May
2012
Format:
PDF
Type:
Publications
This publication provides information of hot charging of continuously cast steel.
http://www.google.com/url?sa=t&source=web&cd=2&ved=0CBgQFjAB&url=http%3A//issira...
Global Warming Countermeasures: Japanese Technologies for Energy Savings / GHG Emissions Reduction
Date:
2008
Source:
Format:
PDF
Type:
Publications
This revised 2008 version of the publication from New Energy and Industrial Technology Development of Japan includes information on innovative Japanese technologies for energy efficiency and for the reduction of CO2 emissions.
Page Number:
86-87