U.S. Department of EnergyOffice of Scientific and Technical Information
Sonic resonator control and method for determining component concentration in multiple-component liquid
Abstract
This invention teaches a control to be used in smelting aluminum by the electrolysis breakdown of alumina (Al/sub 2/O/sub 3/) in a molten electrolyte heated to approximately 950 to 1000/sup 0/C. The invention provides a sonic resonator and control that can accurately detect the resonant frequency of the resonator in the molten electrolyte. The resonator preferably is made with tubular side wall 1/4 of the sonic wavelength, or is a quarter wave resonator. A wave generator inputs a signal having a range of frequencies that includes the resonant frequency, so that a peak resonant output at the resonant frequency can be detected on an oscilloscope or like detector. This instantaneous resonant frequency is then checked against an accurate data base correlating the resonant frequencies of the resonator in the electrolyte at specific alumina concentrations normally experienced throughout the electrolysis cycle. The electrolysis cycle can thus be controlled and recharged at any predetermined low alumina concentration greater than where the anode effect phase of the cycle normally might begin.
- Inventors:
- Publication Date:
- OSTI Identifier:
- 5704292
- Application Number:
- ON: DE83018004
- Assignee:
- ERA-08-054772; EDB-83-179031
- DOE Contract Number:
- W-31-109-ENG-38
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 47 OTHER INSTRUMENTATION; 36 MATERIALS SCIENCE; ALUMINIUM; SMELTING; ACOUSTIC TESTING; PROCESS CONTROL; ALUMINIUM OXIDES; ELECTROLYSIS; MIXTURES; RESONATORS; ALUMINIUM COMPOUNDS; CHALCOGENIDES; CONTROL; DISPERSIONS; ELECTRONIC EQUIPMENT; ELEMENTS; EQUIPMENT; LYSIS; MATERIALS TESTING; METALS; NONDESTRUCTIVE TESTING; OXIDES; OXYGEN COMPOUNDS; TESTING; 440300* - Miscellaneous Instruments- (-1989); 360101 - Metals & Alloys- Preparation & Fabrication
Citation Formats
Shen, S. Y. Sonic resonator control and method for determining component concentration in multiple-component liquid. United States: N. p., 1982.
Web.
Shen, S. Y. Sonic resonator control and method for determining component concentration in multiple-component liquid. United States.
Shen, S. Y. 1982.
"Sonic resonator control and method for determining component concentration in multiple-component liquid". United States. https://www.osti.gov/servlets/purl/5704292.
@article{osti_5704292,
title = {Sonic resonator control and method for determining component concentration in multiple-component liquid},
author = {Shen, S. Y.},
abstractNote = {This invention teaches a control to be used in smelting aluminum by the electrolysis breakdown of alumina (Al/sub 2/O/sub 3/) in a molten electrolyte heated to approximately 950 to 1000/sup 0/C. The invention provides a sonic resonator and control that can accurately detect the resonant frequency of the resonator in the molten electrolyte. The resonator preferably is made with tubular side wall 1/4 of the sonic wavelength, or is a quarter wave resonator. A wave generator inputs a signal having a range of frequencies that includes the resonant frequency, so that a peak resonant output at the resonant frequency can be detected on an oscilloscope or like detector. This instantaneous resonant frequency is then checked against an accurate data base correlating the resonant frequencies of the resonator in the electrolyte at specific alumina concentrations normally experienced throughout the electrolysis cycle. The electrolysis cycle can thus be controlled and recharged at any predetermined low alumina concentration greater than where the anode effect phase of the cycle normally might begin.},
doi = {},
url = {https://www.osti.gov/biblio/5704292},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Oct 29 00:00:00 EDT 1982},
month = {Fri Oct 29 00:00:00 EDT 1982}
}