SLURRY FOR PREVENTION OF SEWER CORROSION USING MIXTURES OF MAGNESIUM HYDROXIDE AND/OR TITANIUM DIOXIDE AND SODIUM HYDROXIDE VIA THE CROWN SPRAY PROCESS

摘要

An improved sprayable aqueous slurry for inhibiting corrosion in sewer pipe lines comprising an aqueous mixture of about 100% by volume of a metal hydroxide and/or a metal dioxide selected from a class consisting of magnesium hydroxide and titanium dioxide and less than about 1% by volume of sodium hydroxide, the metal hydroxide and the metal dioxide having mixing rates of about 50 to 60% by volume with about 50 to 40% by volume of water and the sodium hydroxide having a mixing rate of about 50% by volume with about 50% of water and the slurry having a pH of 13.0 or more and a useful life of about 15 to about 24 months.