- a highly refractory, siliceous rock used to line furnaces.
- a synthetic product similar to this rock, made by mixing ground quartz with a bonding material.
Origin of ganister
First recorded in 1805–15; origin uncertain
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for ganister
For furnace linings, the quartzite or ganister must be exceptionally pure.
The principal uses of sandstone are for building stone, crushed stone, and ganister (for silica brick and furnace-linings).
These clays are highly silicious and in composition are intermediate between the Yorkshire fireclays and ganister.The Natural History of Clay
Alfred B. Searle
After covering all the exposed steel surfaces with ganister, the plates are put in a gas furnace and heated to a welding heat.
Lower: Flaggy hard sandstones (ganister), shales and thin coal seams.
- a highly refractory siliceous sedimentary rock occurring beneath coal seams: used for lining furnaces
- a similar material synthesized from ground quartz and fireclay
C19: of unknown origin