1 results listed
Pig iron production costs are very high in blast furnaces
where conventional iron and steel production is carried out, and
therefore, iron and steel producers seek alternative methods, two of
which are the production of sponge iron and iron nuggets.
Depending on furnace temperature and waiting time, reduction of
magnetite to pure iron results in three products, one of which is
Direct Reduced Iron obtained from iron oxide ore in a reducing
atmosphere between temperatures of 900-1100 oC. The second
product is Transition Direct Reduced Iron (TDRI) obtained at
temperatures at which partial melting occurs. The third product is
iron nuggets in which complete melting occurs, and metal and slag
are separately obtained.
The aim of this study was to investigate the effect of biomass waste
on iron nugget production from magnetite ore using carbothermic
method. Biomass waste was carbonized at 800 °C for 1440 min to
obtain a 94.68% C and 0.03% S carbonized product with a thermal
value of 8823 cal/g.
Composite pellet samples with and an O/C of 0.5, 1
and 2 were treated in a high temperature furnace at 1300 and 1350
°C for 5, 10 and 15 min. Results showed that samples contained Fe
and C as well as FeO. Macro images showed that metal-slag
separation was not fully achieved and that the product exhibited
TDRI properties.
International Iron & Steel Symposium
UDCS
Bayram Bostancı
Elif ARANCI ÖZTÜRK
Mustafa BOYRAZLI
Engin ÇEVİK
Zeki Çizmecioğlu