Influence of Bottom Bubbling Rate on Formation of Metal Emulsion in Sn–Sb–Cu Alloy and Molten Salt System

Song, Dong-Yeul; Maruoka, Nobuhiro; Shibata, Hiroyuki; Kitamura, Shin-ya; Sasaki, Naoto

doi:10.2355/isijinternational.isijint-2016-528

Cited by 5 publications

(2 citation statements)

References 13 publications

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“…The influence of the physical properties and bubbling conditions on the generation of metal emulsions has been investigated by many researchers using cold models (water/oil 4,5) , Hg/water, etc. 6,7) ) or systems comprising low-melting-point metals and molten salts 6,7,[11][12][13][14][15][16] . The interfacial area between slag and metal largely increases, increasing the rate of decarburization and dephosphorization.…”

Section: Introductionmentioning

confidence: 99%

Influence of Droplet Size and Oil Viscosity on the Descending Velocity of Droplets Using Water Model With and Without Stirring

et al. 2023

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Metal emulsions have been studied for several decades as a method of increasing the efficiency of the steelmaking process. This study was performed using a water model, observable at room temperature, to compensate for the disadvantages of the high-temperature experiment, the results of which are difficult to observe visually. As a substitute for metal-in-slag emulsions, experiments were conducted by dropping distilled water into silicone oil and comparing the results with the results of a calculation by momentum balance equations. The descending velocity of the water droplet decreased as the diameter of the

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Section: Introductionmentioning

confidence: 99%

Influence of Droplet Size and Oil Viscosity on the Descending Velocity of Droplets Using Water Model With and Without Stirring

et al. 2023

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“…A typical example is steel droplets dispersed into the slag observed in the steelmaking process. This special emulsion plays an important role in controlling the rate of reaction between molten steel and slag, and in order to clarify its formation mechanism researchers have studied the bubbling-assisted emulsification of liquid metal with molten chloride salts as the slag phase [14][15][16]. These studies demonstrated that micro-sized emulsified metal liquid droplets can be extracted by cooling them and then dissolving the salts into water.…”

Section: Introductionmentioning

confidence: 99%

Metal Emulsion-Based Synthesis, Characterization, and Properties of Sn-Based Microsphere Phase Change Materials

Zheng

Luo

et al. 2021

Molecules

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A comparative study of the metal emulsion-based synthesis of Sn-based materials in two different types of molten salts (namely LiCl–KCl–CsCl and LiNO3-NaNO3-KNO3 eutectics) is presented, and the properties of Sn, Sn-Cu and Sn-Cu-Zn microsphere phase change materials prepared in chloride salts are evaluated by differential scanning calorimetry (DSC) to understand the effect of element doping. Despite a high ultrasonic power (e.g., 600 W or above) being required for dispersing liquid Sn in the chloride system, well-shaped Sn microspheres with a relatively narrow size range, e.g., about 1 to 15 µm or several micrometers to around 30 µm, can be prepared by adjusting the ultrasonic power (840–1080 W), sonication time (5–10 min) and the volume ratio of salts to metal (25:1–200:1). Such a method can be extended to the synthesis of Sn-based alloy microspheres, e.g., Sn-Cu and Sn-Cu-Zn microspheres. In the nitrate system, however, a very low ultrasonic power (e.g., 12 W) can be used to disperse liquid Sn, and the particles obtained are much smaller. At low ultrasonic power (e.g., 12 W), the particle size is generally less than 10 or 4 µm when the sonication time reaches 2 or 5 min, and at high ultrasonic power, it is typically in the range of hundreds of nanometers to 2 µm, regardless of the change in ultrasonic power (480–1080 W), irradiation time (5–10 min), or volume ratio of salts to metal (25:1–1000:1). In addition, the appearance of a SnO phase in the products prepared under different conditions hints at the occurrence of a reaction between Sn droplets and O2 in situ generated by the ultrasound-induced decomposition of nitrates, and such an interfacial reaction is believed to be responsible for these differences observed in two different molten salt systems. A DSC study of Sn, Sn-Cu, and Sn-Cu-Zn microspheres encapsulated in SiO2 reveals that Cu (0.3–0.9 wt.%) or Cu-Zn (0.9 wt.% Cu and 0.6% Zn) doping can raise the onset freezing temperature and thus suppress the undercooling of Sn, but a broad freezing peak observed in these doped microspheres, along with a still much higher undercooling compared to those of reported Sn-Cu or Sn-Cu-Zn solders, suggests the existence of a size effect, and that a low temperature is still needed for totally releasing latent heat. Since the chloride salts can be recycled by means of the evaporation of water and are stable at high temperature, our results indicate that the LiCl–KCl–CsCl salt-based metal emulsion method might also serve as an environmentally friendly method for the synthesis of other metals and their alloy microspheres.

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Solid carbon production and recovery from high temperature methane pyrolysis in bubble columns containing molten metals and molten salts

Rahimi

Kang

Gelinas

et al. 2019

Carbon

115

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Influence of Bottom Bubbling Rate on Formation of Metal Emulsion in Sn–Sb–Cu Alloy and Molten Salt System

Cited by 5 publications

References 13 publications

Influence of Droplet Size and Oil Viscosity on the Descending Velocity of Droplets Using Water Model With and Without Stirring

Influence of Droplet Size and Oil Viscosity on the Descending Velocity of Droplets Using Water Model With and Without Stirring

Metal Emulsion-Based Synthesis, Characterization, and Properties of Sn-Based Microsphere Phase Change Materials

Solid carbon production and recovery from high temperature methane pyrolysis in bubble columns containing molten metals and molten salts

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