射（ＸＲＤ）、扫描电子显微镜（ＳＥＭ）、维氏硬度计等研究了源于海砂矿的ＴｉＯ２含量对ＭｇＯ Ａｌ２Ｏ３ ＳｉＯ２微晶玻璃的结晶行为、主晶相、微观结构和性能的影响。结果表明：随着每 １００ｇ红土矿中ＴｉＯ２含量从０增加到２ｇ，微晶玻璃中逐渐析出堇青石相，其密度和维氏硬度逐渐提高；含２ｇＴｉＯ...
Belmonte, DonatoOttonello, GiulioZuccolini, Marino VetuschiAttene, MarcoElsevier B.V.Chemical GeologyBelmonte, D.; Ottonello, G.; Vetuschi Zuccolini, M.; Attene, M. The system MgO-Al2O3-SiO2 under pressure: A computational study of melting relations and phase diagrams. Chem. Geol. 2017, ...
CaO–SiO2–Al2O3–MgO is a basic system of ironmaking slag in which CaO and MgO are mainly come from the flux, SiO2 and Al2O3 are mainly from the raw materials. Effect of raw material composition on phase equilibrium of the slag can be described by a pseudo-ternary system (CaO?+?
A complete literature review, critical evaluation, and thermodynamic modeling of the phase diagrams and thermodynamic properties of all oxide phases in the MgO-Al2O3, CaO-MgO-Al2O3, and MgO-Al2O3-SiO2systems at 1 bar total pressure are presented. Optimized model equations for the thermodynamic...
Experimental Determination of the Phase Diagram of the CaO-SiO2-5 pctMgO-10 pctAl2O3-TiO2 System Ti-bearing CaO-SiO2-MgO-Al2O3-TiO2 slags are important for the smelting of vanadium-titanium bearing magnetite. In the current study, the pseudo-melting te... Junjie,Shi,Lifeng,... - 《Me...
Thermodynamic activity of Na2O in Na2O-CaO-SiO2, Na2O-MgO-SiO2, and Na2O-CaO-SiO2-Al2O3 melts at 1400°C A gas phase equilibration technique was used to generate Na 2 O isoactivity data at high-silica compositions in the systems Na 2 O-CaO-SiO 2 , Na 2 O-MgO-SiO 2 , and Na ...
Foster, W. R.: Synthetic sapphirine and its stability relations in the system MgO-Al 2 O-SiO 2 . J. Geol. 58 , 135–151 (1950).Foster, W. R. (1950) Synthetic sapphirine and its stability relations in the system MgO-Al2O3-SiO2. J. Am. Ceram. Soc. 3: pp. 73-84...
In this study, new experimental phase diagram data were also collected and a critical evaluation and optimization of the thermodynamic properties and phase diagrams of the CaO-MgO-AlO-SiO-ZrOsystem was performed. As an example, the optimized ZrO-SiObinary system and ZrO-CaO-MgO ternary system ...
The formation of Mg gas and SiO gas at such low oxygen potential would well explain the loss of both MgO at the surface and SiO2 in the slag. Fig. 5 SEM image of MS0 substrate in Zone D; MgO matrix marked as 1, liquid phase marked as 2, and 12CaO·7Al2O3 marked as 3 Full ...
Compressive creep of five commercially-available brands of CaO/SiO2-containing MgO refractories was measured over a temperature range of 1400-1550°C a