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Application area Lignin
Bricks

Lignosulfonates can be added to the clay mixture during the manufacture of bricks and roof tiles. The dispersing effect of the lignosulfonate supports the mechanical homogenization of the clay mixture.

The formation of cracks in the finished product is thereby minimized through both the predrying and firing stage. This helps minimize the application of mechanical energy required during the production of the clay mass.

If greater concentrations of lignosulfonates are used, where necessary in combination with other organic materials, the decomposition gases expand the clay mass accordingly during the firing process. A homogenous pore structure is formed.

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