文档介绍：The thermodynamic analysis of hot metal
dephosphorization flux containing red mud
Jin Yan, Bi Xuegong
Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education
Wuhan University of science and technology
Wuhan, P. R. China
Jinyan203558@
Abstract—For the red mud is the main waste of aluminium works value of its leachate is in the range of 12~14. The high
which pollutes the water environment. In order to utilization the alkalinity of red mud leads to pollution of surround earth and
red mud, the CaO-Fe3O4-Al2O3 flux for hot metal pretreatment is ground water[9].
developed. The phase diagrams of the CaO-Fe3O4-Al2O3 system
℃℃ It is estimated that the tonnage per year of red mud
at 1350 and 1600 was calculated and analyzed with the 7
FactSage software, and verified by the experimental results. In produced in global aluminium industry is over 6×10 t[8].
Recently, China’s aluminium industry developes rapidly, in
the phase diagram of the CaO-Fe3O4-Al2O3 flux at 1350 ℃, it is
2007 the output of alumina is about 20 million t, and for
shown that when there is ferrous oxide in the flux and Al2O3
content less than 80%, the slag phase would be formed. After production of 1 ton alumina, ~ t red mud is also produced.
comparison of the phase diagram of the CaO-Fe3O4-Al2O3 flux at In 2007, 40 million tons r