Production of periclase grain

Details Production of periclase grain Production of periclase grain

1977-10-17

1978-11-21

Poer, James

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106 59, C04B 3504

Patent

active

041264789

ABSTRACT:
A high purity periclase grain having less than 8 volume % porosity, less than 2% SiO.sub.2, and a CaO:SiO.sub.2 weight ratio not over 1.0 is produced in a single fire process by mixing from 0.5 to 1.5% finely divided SiO.sub.2 with a magnesium hydroxide containing (on the ignited basis) at least 98% MgO, not over 1.5% CaO, and not over 1.0% SiO.sub.2, drying the admixture, compacting it at a pressure of at least 10 tons/in.sup.2 (1400 kg/cm.sup.2), and firing the compacts at a temperature of at least 1700.degree. C.

REFERENCES:
patent: 3378383 (1968-04-01), Van Dreser

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