Sonic resonator control and method for determining component concentration in multiple component molten liquids
- Woodridge, IL
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.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- DOE Contract Number:
- W-31109-ENG-38
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Number(s):
- US 4447301
- OSTI ID:
- 864990
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
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
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