Water alkalinity control in the manufacture of hydrous silicate

Details Water alkalinity control in the manufacture of hydrous silicate Water alkalinity control in the manufacture of hydrous silicate

1978-09-21

1980-08-26

Pavelko, Thomas P.

Plastic and nonmetallic article shaping or treating: processes

Recycling of reclaimed or purified process material

Of gaseous process material

162190, 264 82, 264 86, B28B 300

Patent

active

042195152

ABSTRACT:
The water resulting from the filter press molding of slurries of hydrated lime and reactive silica in the manufacture of hydrous calcium silicate products is recycled to the process by treating it with carbon dioxide to precipitate dissolved calcium hydroxide, filtering, and returning the filtered water to the process step wherein the lime and silica are slurried in water.

REFERENCES:
patent: 2850786 (1958-09-01), Dubbs
patent: 3262877 (1966-07-01), Le Compte
patent: 3902913 (1975-09-01), Helser et al.

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