Method and unit for regeneration of solution for cleaning glass, method and unit for cleaning silicate glass, and cathode-ray tube
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United States of America Patent
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Feb 18, 2003
Grant Date -
N/A
app pub date -
Apr 6, 2000
filing date -
Aug 26, 1998
priority date (Note) -
Expired
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Abstract
A treatment solution (2) containing fluoride is added to a cleaning solution (1) drained from a cleaning tank (11). Fluoride is allowed to react with fluorosilicic acid in the cleaning solution to settle a precipitate (4) containing fluorosilicate, and the precipitate (4) is removed. The cleaning solution regenerated in a regeneration apparatus (10) is again returned to the cleaning tank (11), and used as a cleaning solution for a CRT panel (20).
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