Thermodynamic analysis and formula optimization of steel slag-based ceramic materials by FACTsage software

Ai, Xianbin; Bai, Hao; Zhao, Lihua; Cang, Daqiang; Tang, Qi

doi:10.1007/s12613-013-0739-y

Cited by 22 publications

(11 citation statements)

References 8 publications

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“…These pores are closed pores, that is, the pores are not connected to each other. The presence of closed pores played an important role in the low water absorption of the sintered samples [24]. This is consistent with the result of low water absorption of all of the samples, as shown in Table 3.…”

Section: Sem Analysissupporting

confidence: 90%

Effect of Fly Ash on the Properties of Ceramics Prepared from Steel Slag

et al. 2018

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Abstract:In this study, SiO 2 -Al 2 O 3 -CaO-MgO steel slag ceramics containing 5 wt % MgO were used for the preparation of ceramic bodies, with the replacement of 5-20 wt % quartz and feldspar by fly ash. The effect of the addition of fly ash on the sintering shrinkage, water absorption, sintering range, and flexural strength of the steel slag ceramic was studied. Furthermore, the crystalline phase transitions and microstructures of the sintered samples were investigated by XRD, Fourier transform infrared (FTIR), and SEM. The results showed that the addition of fly ash affected the crystalline phases of the sintered ceramic samples. The main crystal phases of the base steel slag ceramic sample without fly ash were quartz, diopside, and augite. With increasing fly ash content, the quartz diffraction peak decreased gradually, while the diffraction peak intensity of anorthite became stronger. The mechanical properties of the samples decreased with the increasing amount of fly ash. The addition of fly ash (0-20 wt %) affected the optimum sintering temperature (1130-1160 • C) and widened the sintering range. The maximum addition amount of fly ash should be 15 wt %, for which the optimum sintering temperature was 1145 • C, water absorption was 0.03%, and flexural strength was 43.37 MPa higher than the Chinese national standard GBT 4100-2015 requirements.

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Section: Sem Analysissupporting

confidence: 90%

Effect of Fly Ash on the Properties of Ceramics Prepared from Steel Slag

et al. 2018

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“…The Kissinger method [19,20], in which crystallization is treated as a first-order reaction, is the method most commonly used to analyze crystallization kinetics based on the JMA equation, which is shown as follows:…”

Section: Dsc Analysismentioning

confidence: 99%

“…Ec could be calculated from the slopes of the fitting lines listed in Table 4. The Ozawa [19] method is another method widely used to calculate Ec, the equation is as follows:…”

Section: Dsc Analysismentioning

confidence: 99%

Influence of Crystallization Behavior of Gas Quenching Blast Furnace Slag on the Preparation of Amorphous Slag Beads

et al. 2020

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Slag beads with different crystal content could be obtained through the gas quenching blast furnace slag (BFS) process. In order to increase the additional value of the slag beads as much as possible, it was necessary to restrain the crystallization of the slag beads as much as possible. In this paper, the mineral types and crystallization temperatures of BFS with different basicities and cooling rates were studied by using Factsage thermodynamic software, XRD, and differential scanning calorimeter (DSC) experiments, which obtained the gas quenching temperature and the cooling rate needed to restrain crystallization behavior in the gas quenching process; The crystallization mechanism was studied by calculating crystallization activation energy (Ec) using the DSC experiment, at the same time, the thermodynamic results were verified. The proper basicity and cooling rate of BFS were found to be conducive to the preparation of amorphous slag beads. The results showed that the initial crystallization temperature decreased with decreasing the basicity and increasing the cooling rate, which could increase the amorphous content of slag beads in the gas quenching process. The crystallization activation energy (Ec) increased with decreasing basicity, which increased the crystallization barrier.

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“…Figures 11, 12, and 13. The simulation was carried out using FactSage software [45]. Generally, the components show similar varying trends under all circumstances.…”

Section: Thermal Stability Of Carbon Blackmentioning

confidence: 99%

Thermodynamic Simulation and Experimental Investigation of Plasma Preparation of Nanosized Carbon Using Propane

Luo

Wang

et al. 2019

Journal of Nanomaterials

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Carbon black was prepared by pyrolysis of propane under different plasma conditions. The effects of the flow ratio of the carbon precursor, discharge current, and plasma gases (including argon, nitrogen, and hydrogen) on the morphology and structure of carbon black were investigated by a series of physical characterizations. The equilibrium components were computed based on the minimization of the Gibbs free energy. The theoretical analysis and experimental results confirmed that HCN is the inevitable byproduct in the tail gas from the nitrogen plasma process, indicating that nitrogen is inappropriate as the carrier gas for the preparation of carbon black. The effects of discharging current, discharging spacing, and proportions of propane were also symmetrically studied by the evaluation of HCN concentration. Moreover, the graphene was generated when using argon as the plasma gas mixed with a small amount of hydrogen.

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Thermodynamic analysis and formula optimization of steel slag-based ceramic materials by FACTsage software

Cited by 22 publications

References 8 publications

Effect of Fly Ash on the Properties of Ceramics Prepared from Steel Slag

Effect of Fly Ash on the Properties of Ceramics Prepared from Steel Slag

Influence of Crystallization Behavior of Gas Quenching Blast Furnace Slag on the Preparation of Amorphous Slag Beads

Thermodynamic Simulation and Experimental Investigation of Plasma Preparation of Nanosized Carbon Using Propane

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