Clay bricks are the oldest, the most widely used refractory materials, to produce the raw material is clay mineral clay brick,

natural refractory clay generally can be divided into hard clay and soft clay, the refractory material in the manufacturing process,

the former is the most used after calcining clinker;The latter after adding water, plasticity is good, easy to sintering, used as a binder.

Refractory clay, clay clinker for orthopaedic binder made of Al2O3 content is 30-48% of refractory products.Clay bricks are the oldest, the most widely used refractory.In the 70 s China clay brick production accounts

for about 65% of the total output of refractory, countries such as America, Britain, Japan accounted for about 40 ~ 50%.

Raw material is clay mineral to make clay brick.Natural fire clay in general can be divided into hard clay and soft clay.

In refractory material in the manufacturing process, the former most used after calcining clinker;The latter after adding water,

plasticity is good, easy to sintering, used as a binder.China's shandong province and other places the chamotte (hard) and

suzhou clay (soft) is a famous high quality refractory clay.Clay minerals are mainly kaolinite (2 sio2, Al2O3 · 2 h2o),

dickite (composition and kaolinite and same, but different lattice constant), montmorillonite (4 sio2, Al2O3 · 6 h2o) and mica mineral.