Sonic resonator control and method for determining component concentration in multiple component molten liquids
Abstract
This invention teaches a control to be used in smelting aluminum by the electrolysis breakdown of alumina (A1.sub.2 O.sub.3) in a molten electrolyte heated to approximately 950.degree.-1000.degree. 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:
-
- Woodridge, IL
- Issue Date:
- Research Org.:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- OSTI Identifier:
- 864990
- Patent Number(s):
- 4447301
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES C25C - PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS
G - PHYSICS G01 - MEASURING G01H - MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- DOE Contract Number:
- W-31109-ENG-38
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- sonic; resonator; control; method; determining; component; concentration; multiple; molten; liquids; teaches; smelting; aluminum; electrolysis; breakdown; alumina; a1; electrolyte; heated; approximately; 950; degree; -1000; provides; accurately; detect; resonant; frequency; preferably; tubular; wall; wavelength; quarter; wave; generator; inputs; signal; range; frequencies; peak; output; detected; oscilloscope; detector; instantaneous; checked; accurate; data; base; correlating; specific; concentrations; normally; experienced; throughout; cycle; controlled; recharged; predetermined; anode; effect; phase; begin; wave resonator; data base; resonant frequency; molten electrolyte; wave generator; resonant frequencies; molten liquid; melting aluminum; multiple component; quarter wave; rate data; accurately detect; /205/73/204/436/702/
Citation Formats
Shen, Sin-Yan. Sonic resonator control and method for determining component concentration in multiple component molten liquids. United States: N. p., 1984.
Web.
Shen, Sin-Yan. Sonic resonator control and method for determining component concentration in multiple component molten liquids. United States.
Shen, Sin-Yan. Sun .
"Sonic resonator control and method for determining component concentration in multiple component molten liquids". United States. https://www.osti.gov/servlets/purl/864990.
@article{osti_864990,
title = {Sonic resonator control and method for determining component concentration in multiple component molten liquids},
author = {Shen, Sin-Yan},
abstractNote = {This invention teaches a control to be used in smelting aluminum by the electrolysis breakdown of alumina (A1.sub.2 O.sub.3) in a molten electrolyte heated to approximately 950.degree.-1000.degree. 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 = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 1984},
month = {Sun Jan 01 00:00:00 EST 1984}
}