The Reaction Behavior of 2CaO·SiO2 with …
Hamano T., Fukagai S., Tsukihashi F. Reaction Mechanism between Solid CaO and FeO x –CaO–SiO 2 –P 2 O 5 Slag at 1 573 K. ISIJ Int. 2006; 46:490–495. doi: …
Phase equilibria in the system CaO-TiO2-SiO2
Abstract. Results of a study of phase equilibria in the system CaO–TiO2–SiO2 are presented. A prominent feature of the liquidus surface is a large two-liquid region which appears on the ...
Effect of CaO/SiO2 ratio on phase transformation and properties of
The effect of the CaO/SiO2 ratio (0.12–0.8) on the phase transitions was examined by adding steel slag to coal fly ash in the range of 10–50 wt%, and a temperature range of 900–1200 °C. The ...
(PDF) Phase compatibility in the system CaO-SiO 2 -Al 2 O …
The compatibility of phases within the CaO-SiO2-Al2O3-SO3-Fe2O3 system is revisited. The influence of the SO2 partial pressure on the formation of phases and the stability of phase assemblages is ...
Viscosity and desulphurisation behaviour of CaO–SiO 2
At a fixed CaO/SiO2(C/S) ratio of 1.20, 9 mass pct MgO, and 1 mass pct TiO2, the viscosity increases with an increase in Al2O3 content at a range of 16 to 24 mass pct due to the polymerization of ...
ACIDIC PROPERTIES OF CaO-SiO2 BINARY OXIDE …
Abstract- A series of CaO-SiO2 catalysts were prepared by coprecipitation from the mixed solution of calcium chlo- ride and sodium silicate. The addition of CaO to SiO2 caused the increase of acidity and the shift of O-H and Si-O stretching bands of the silanol group to a lower frequency in proportion to the CaO content. ...
(PDF) Thermodynamic assessment of the CaO-Al2O3-SiO2 …
The CaO–Al2O3–SiO2 system has been assessed with the CALPHAD technique, based on recent assessments of its binary systems. A new species AlO2−1 was introduced for modeling liquid Al2O3. The ...
Effect of CaO/SiO2 ratio on viscosity and structure of slag
At fixed CaO/SiO2 between 0.8 and 1.3, higher Al2O 3 content increased the slag viscosity due to the polymerization of the aluminate structures. At fixed Al2O3 of 15 and 20 mass pct, increasing ...
Effects of MnO and CaO/SiO2 Mass Ratio on Phase Formations of CaO …
The knowledge on distribution of mineralogical phase in slag is of vital importance to disposal and utilization of slag. Despite of certain amount (up to 5%) of MnO found in stainless steel slag, MnO distribution in phases of slag was not thoroughly investigated. In this work, phases of synthetic CaO–Al2O3–MgO–SiO2–CrOx–MnO slag …
(PDF) Effect of CaO on Phase Separation and Properties in Na 2 O-CaO
Density of CaO–Al2O3–SiO2 glasses with SiO2 ≥ 50 mol% and CaO/Al2O3 ≥ 1 has been analyzed. The basis of analysis is that the entire Al2O3 content forms AlO4 tetrahedra by association with ...
Viscosity and structure evolution of CaO–SiO2
Influence of BaO on viscosity and structure of CaO–SiO2–FetO–Al2O3–BaO steel slag. ABSTRACT The viscosity of steel slag has an important influence on …
Phase Relations of the CaO–SiO2–Sm2O3 System
The CaO–SiO2–Sm2O3 system is valuable for Sm2O3 recycling. However, the phase relations in this system have not been systematically studied previously. Therefore, the CaO–SiO2–Sm2O3 slag system was studied at T = 1773 K and T = 1873 K through thermodynamic equilibrium experiments in argon atmosphere. The equilibrated …
Phase diagram for the binary CaO-SiO2 system[13]
The design of the type and quantity of doping used in our experiments is based on the ternary Al2O3-CaO-SiO2 phase diagram presented in Figure 9, which exhibits the target area with lower liquidus ...
Phase Equilibria Studies in the SiO2-K2O-CaO System
Phase equilibria in the SiO2-K2O-CaO system have been experimentally investigated in the SiO2-rich area. High-temperature equilibration, rapid quenching, and electron probe X-ray microanalysis (EPMA) techniques have been used in this study. K2O may vaporize during EPMA measurements causing significant uncertainties. In the …
Reaction Behavior of SiC with CaO–SiO2–Al2O3 Slag
The existence of SiC particles leads to a large difficulty for slag-metal separation and thus a great increase of metal loss. In this paper, the reaction behavior between SiC and CaO–SiO2 ...
The effect of Al O, CaO and SiO on the phase relations …
, CaO and SiO 2 on the phase relations in vanadium containing slags at 1673 K. Synthetic slags, in which the contents of Al 2 O 3, CaO and SiO 2 were varied individually, were equilibrated at 1673 K in a vertical resistance furnace. Closed molybdenum crucibles were used to set the oxygen potential of the individual samples.
Effects of SiO2/CaO ratio on viscosity, structure, and …
Journal of the Australian Ceramic Society. 2022. The effect of CaO/SiO2 ratio on the crystallization behaviors, mechanical properties, and acid and alkali …
Phase equilibria and liquid phase behavior of the K2O-CaO-SiO2 …
1. Introduction. The most well-known and widely used phase equilibria of K 2 O-CaO-SiO 2 system is the diagram obtained by Morey et al. [1], [2] in 1930s as tabulated in Phase Diagram for Ceramists [3] and Slag Atlas compilations [4].These fundamental data of K 2 O-CaO-SiO 2 system are widely used in the glass and ceramics industries. For …
(PDF) Liquidus and phase equilibria in CaO−SiO2−5
The equilibrium phase relations of the CaO–SiO2–TiO2–Al2O3–MgO system were investigated experimentally in air at 1250–1400 °C using a high-temperature equilibration/quenching technique ...
Thermodynamics of Reactions Among Al2O3, CaO, …
The aluminium silicates mainly include Al2O32SiO2(AS2), Al2O3SiO2(AS,andalusite), AS(kyanite), AS(fibrolite), 3Al2O32SiO2(A3S2). …
(PDF) Phase Equilibrium Study of the CaO-SiO2-MgO …
The 1400 °C isothermal phase diagram of the CaO-SiO2-Ti3O5 system was constructed to demonstrate the areas of single liquid, as well as the two-phase and three-phase domains. Furthermore, a ...
Full article: Effect of CaO and SiO2 on the properties of Y2O3 …
Figure 5., SiO 2 content was 4 wt%, with the temperature increases from 50°C to 1400°C, the thermal expansion coefficient of Y 2 O 3 /CaO (12 wt%) ceramics varies from 6 × 10 −6 ·K −1 to 9 × 10 −6 ·K −1. This is close to the coefficient of thermal expansion of niobium alloy [ 25 ]. Figure 5.
Molecular Dynamics Simulation of the Structure and …
The effect of the binary basicity and addition of CaF2 on the structure and viscosity of CaO-SiO2-CaF2 slag were investigated using molecular dynamics …
Effect of Cooling Rate on Phase and Crystal Morphology …
2.1. Sample Preparation. A traditional CaO–SiO 2 –CaF 2-based mold flux and a nonreactive CaO–Al 2 O 3-based mold flux were synthesized.Reagent-grade powders of CaCO 3, Na 2 CO 3, H 3 BO 3, CaF 2, SiO 2, and Al 2 O 3 were used as the raw materials. In order to obtain CaO, CaCO 3 was calcined at 1373 K (1100 °C) in a muffle …
Phase Equilibria in the System CaO-SiO2-La2O3-Nb2O5 at …
CaO-SiO2-La2O3-Nb2O5 system is of great significance for the pyrometallurgical utilization of Bayan Obo tailing resources. In the present work, the phase equilibrium of this quaternary system at ...
Quantification of phosphorus structures in CaO–SiO2–P2O5 glasses …
The phosphorus structures in CaO–SiO 2 –P 2 O 5 glasses were analyzed by Raman spectroscopy and integral Raman intensities of [PO 4]-tetrahedrons were calibrated by 31 P MAS-NMR spectroscopy. Spectral results showed the presence of Q 0 (P) and Q 1 (P), and calculated values of Raman scattering coefficients of Q 0 (P), Q 1 …
Phase equilibria and liquid phase behavior of the …
Cite https://doi/10.1016/j.fuel.2019.116894Get rights and content Abstract Experimental data of solid-liquid phase equilibria in the K2O-CaO-SiO2systems vital for …
Viscosity and structure evolution of bearing‐BaO slag melt …
DOI: 10.1111/jace.18110 Corpus ID: 239417048; Viscosity and structure evolution of bearing‐BaO slag melt with the low CaO/SiO 2 mass ratio of 0.7 @article{Liu2021ViscosityAS, title={Viscosity and structure evolution of bearing‐BaO slag melt with the low CaO/SiO 2 mass ratio of 0.7}, author={Wen-guo Liu and Yanbiao Chen …
Structural Characteristics of CaO-SiO2-Al2O3-FeO Slag
The effect of the CaO/SiO2 molar ratio on the surface tension of calcium aluminosilicate melts containing magnesia (CaO–SiO2–Al2O3–MgO) has been explored using a ring method at 1723–1823 K ...
(PDF) Thermodynamic properties of melts of CaO2-SiO2 …
Mixtures of CaO-SiO2, MgO-SiO2, FeO-SiO2, CaO-Al2O3 and CaO-SiO2-Al2O3 have been brought into equilibrium, at temperatures between 1350 and 1650 degrees C, with gas phases made by mixing H2, CO2 ...
Effect of CaO/SiO2 ratio on the preparation and crystallization of
The melting was carried out by using the mixture of 85.6 wt% copper slag and 14.4 wt% additives with high-purity such as silica, limestone, alumina, sodium carbonate, fluorite and barium oxide.The ingredients of the batches with different CaO and SiO 2 content were listed in Table 2.As the reduction agent of iron ions, an excess amount of …
(PDF) Experimental investigation of the viscosities in CaO-SiO2 …
The viscosity of molten SiO2-CaO-MgO-Al2O3 Slag was measured using a rotating cylinder method at high CaO and Al2O3 concentration regions to search for a slag with low melting temperature and low ...
SiO2/hyaluronic acid nanoparticles carry CaO2, DOX and p53 …
Herein, mesoporous silica (MSN) with high loading rate was constructed by dilute sulfuric acid thermal etching as the framework. Hyaluronic acid (HA) was loaded with CaO 2, p53 and DOX to construct nanoparticle complexes—SiO 2 @CaO 2 @DOX@P53–HA. First, MSN was proved to be a porous sorbent with a mesoporous structure through BET …