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Ultrasonic depolymerization of Li2O-Na2O-SiO2 type silicate melt.

Yi Min1, Zhenxing Shi1, Chengjun Liu1

  • 1Key Laboratory for Ecological Metallurgy of Multimetallic Mineral (Ministry of Education), Shenyang 110819, China; School of Metallurgy, Northeastern University, Shenyang 110819, China.

Ultrasonics Sonochemistry
|July 23, 2017
PubMed
Summary

Ultrasound successfully depolymerizes silicate melts by breaking Si-O bonds, reducing viscosity. This effect is reversible upon ultrasound removal, with potential uses in steel and aluminum processing.

Keywords:
DepolymerizationSilicate meltUltrasoundViscosity

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Area of Science:

  • Materials Science
  • Physical Chemistry
  • Polymer Science

Background:

  • Organic polymers degrade via ultrasound-induced bond breakage.
  • Silicate melts, like organic polymers, are characterized by Si-O bonds.

Purpose of the Study:

  • To investigate the depolymerization of silicate melts using ultrasound.
  • To analyze the effect of ultrasound on silicate melt structure and properties.

Main Methods:

  • Application of ultrasound to a silicate melt using a specially designed experimental system.
  • Measurement of changes in polymerization degree and viscosity.

Main Results:

  • Ultrasound application breaks Si-O bonds in silicate melts, decreasing polymerization degree and viscosity.
  • Higher ultrasound power leads to further reduction in polymerization and viscosity.
  • Reversibility of depolymerization: viscosity and polymerization degree return to original states after ultrasound removal.

Conclusions:

  • Ultrasound can effectively depolymerize silicate melts.
  • The depolymerization process is reversible.
  • Potential applications exist in steel continuous casting and electrolytic aluminum processes.