Kaolin, code KN-133, is one of the products currently being exploited in Niusht mine. This code, with a relatively high percentage of aluminum, is currently used in Varamin brick factories to produce light yellow to chamotte-colored refractory bricks.

In addition to the use of single or combined soil in the production of refractory bricks, this soil is used as a filler in brick factories due to its technical properties.

What is a general wing?
Balkali is a type of clay, similar to kaolin, and it differs from kaolin in having high plasticity and less resistance to heat. The general composition of calculi often includes 20-80% kaolinite, 10-25% mica and 6-65% silica (quartz). Also, the second most important material with high plasticity in the ceramic industry, after kaolin, is balclay.

Acid test : no reaction 

coefficient of thermal expansion :65

Reset mesh230:N.A.

Soil hardness :soft

Color before baking :cream

Color after baking :yellow to chamotte

Furnace temperature :1155C

Furnace cycle :N.A.

Dry strenght:17.8

Dry shrinkage :0.23

Curing strenght :N.A.

Baking shrinkage :1.49

Heat wave :3.5

Water absorption :14.5

Slurry viscosity :19

Slurry density :1.63