Well you're right. In many crushing and grinding operation including mineral processing ceramics are used. To break a material you have to hit it with something harder and stronger than it. When material like alumina is pressed and fired at temperatures around 1400°C they are highly dense, super tough, very hard, and wear resistant. What better material is there to crush ore?
|Ball Mill: the yellow represents the ore while the grey ball represent the ceramic|
|Nice set of ceramic knives good for any kitchen|
I hope this post has shown that ceramics have many applications outside of armor and is very important to our lives. In truth I did not even cover their application in fields like electronics or renewable energy.