Refractories Flashcards
1
Q
What commodities are produced using refractories?
A
> iron, steel, aluminum, copper, glass, cement, gasoline, other commoditites
2
Q
What do refractories mainly fabricate?
A
> iron/steel (65-75%)
cement clinker (8-12%)
glass/non-ferrous alloys, etc.
3
Q
When did China exceed US and Japan in terms of steel production? How much of the world’s steel do they make today?
A
> 1996
50%
4
Q
What were refractories historically? Why did that change?
A
> fired clay bricks
increasing CAMPAIGN TIMES (lifetime of a furnace)
5
Q
What are the different forms of refractories?
A
- shaped fired bricks (shaped as cantenary arches)
- monolithics: applied on site as a cement (gunning mix)
–> used over bricks
–> must first be dried, then fired in-situ - fibers
–> cloth or board for high temp lab furnaces