Method for fusing reducing iron by employing iron ore hot pressing carbon-containing agglomerate
A technology of agglomerate and shaft furnace, which is applied in the direction of shaft furnace, furnace, furnace type, etc., and can solve the limitations of the application and development of cold-consolidated carbon-containing pellet smelting reduction technology, the increase of binder cost and slag volume, and high-temperature strength Poor and other problems, to achieve the effect of good controllability, strong adaptability of raw materials, and long furnace service life
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[0020] Main raw material is as follows in the technological process of the present invention:
[0021] 1) Iron-containing powder. Comprehensively considering the technical and economic indicators of the entire process, the smooth flow of shaft furnace production, and the connection between upstream and downstream processes, the selected iron-containing powder should have high grade, low gangue content, low phosphorus and sulfur content, good reducibility, and particle size. suitable. This process uses iron ore concentrate powder (Dashiqiao iron ore concentrate), the main components are shown in Table 1, and the place of origin is Dashiqiao, Liaoning.
[0022] Table 1 Dashiqiao iron concentrate composition (wt%)
[0023] project
TF
SiO 2
al 2 o 3
CaO
MgO
S
P
other
Dashiqiao Iron Concentrate
70.09
1.75
0.085
0.15
0.10
0.31
0.01
<0.021
[0024] 2) Coal for...
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