Phase equilibria in high MgO ferro- and silico-manganese smelting slags

Zhao, B., Jak, E. and Hayes, P. C. (2004). Phase equilibria in high MgO ferro- and silico-manganese smelting slags. In: Proceedings: Tenth International Ferroalloys Congress. Tenth International Ferroalloys Congress (INFACON X), Cape Town, South Africa, (184-193). 1st - 4th February, 2004.


Author Zhao, B.
Jak, E.
Hayes, P. C.
Title of paper Phase equilibria in high MgO ferro- and silico-manganese smelting slags
Conference name Tenth International Ferroalloys Congress (INFACON X)
Conference location Cape Town, South Africa
Conference dates 1st - 4th February, 2004
Proceedings title Proceedings: Tenth International Ferroalloys Congress
Place of Publication South Africa
Publisher South African Institute of Mining and Metallurgy
Publication Year 2004
Sub-type Fully published paper
ISBN 0-9584663-5-1
Start page 184
End page 193
Total pages 10
Collection year 2004
Language eng
Abstract/Summary Phase equilibria have been determined experimentally for pseudo-ternary sections of the form “MnO”- (CaO+MgO)-(SiO2+Al2O3) with a fixed Al2O3/SiO2 weight ratio of 0.17 and MgO/CaO weight ratios of 0.25 and 0.17 respectively for temperatures in the range 1473-1673 K. The primary phase fields present for the MgO/CaO weight ratio of 0.17 include manganosite (Mn,Mg,Ca)O; dicalcium silicate α-2(Ca,Mg,Mn)O·SiO2; merwinite 3CaO⋅(Mg,Mn)O⋅2SiO2; wollastonite [(Ca,Mg,Mn)O·SiO2]; diopside [(CaO,MgO,MnO,Al2O3)·SiO2]; tridymite (SiO2); tephroite [2(Mn,Mg)O·SiO2]; rhodonite [(Mn,Mg)O·SiO2] and melilite [2CaO·(MgO,MnO,Al2O3)·2(SiO2,Al2O3)]. For the section with MgO/CaO weight ratio of 0.25 the anorthite phase (CaO⋅Al2O3⋅2SiO2) is also present. The liquidus temperatures of ferro- and silico-manganese smelting slags have been determined. The liquidus temperatures at low MnO concentrations are shown to be principally dependent on the modified basicity weight ratio (CaO+MgO)/(SiO2+Al2O3).
Subjects E1
291301 Process Metallurgy
640205 Other non-ferrous ores (e.g. copper, zinc)
0914 Resources Engineering and Extractive Metallurgy
Keyword Liquidus Temperatures
Metallurgy
Smelting Slags
Q-Index Code E1

 
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Created: Thu, 23 Aug 2007, 19:51:31 EST