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ORGANIZER;CN=ESTAD 2023:mailto:info@metec-estad.com
LOCATION:Room 02
SUMMARY:Hybrid system hematite cold bonded pellet (h-CBP) performance at high temperature blast furnace zones
DESCRIPTION:Cold bonding pellet can turn into and important process in the ironmaking industry, eliminating carbon intensive process. However, this route presents high-temperature metallurgical challenges due the behavior in the blast furnace process. The ability of the material to maintain its strength and structure and resist degradation is crucial for producing high-quality h-CBP. In the last years, Champion Iron, a high-grade iron ore concentrate producer in Quebec, Canada have been developing a solution to supply to the ironmaking industry.
Previous technologies focused on either organic or inorganic binder systems. A hybrid inorganic-organic binder was formulated, to overcome the weaknesses of the other. Unlike cementitious binders, no thermal conversion is occurring around 750°C, leaving much more leeway to maintain cohesion up to the cohesive zone. Organic portion of the binder provides bonding with both the iron oxides and the inorganic binder, to give the required physical properties. Additionally, the organic content aids the manufacturing process and aids stability, when in the unhardened phase.
The 10 m drop test results of 86.9% -6.3 mm and 2.0 % -0.5 mm are slightly below the range of seaborne trade pellets values of 92.4 %-6.3mm and 1.5 %-0.5mm. The reducibility of 0.67 %O2/min is higher traded acid pellets value for BF (0.4-0.6 %O2/min). In this work a modified BRASS test is presented to better characterise the behavior of the h-CBP’s in the non-isothermal blast furnaces. Also, the test was interrupted in different zone to evaluate the progression of the reaction. The results presented also satisfactory reduction rate at the end of thermal reserve zone, and lower fine generation as compared with traded pellet. 
Champion Iron has been successfully designing a new concept that supports decarbonized hot metal production from a blast furnace with a stable contribution to the ferrous burden, like a traditional product. 

CLASS:PUBLIC
DTSTART:20230614T094000
DTEND:20230614T100000
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