Mouldings for the foundry industry:
From the quartz sands in
conjunction with special binders,
the negative moulds are produced,
which are then later filled with liquid metal.
Low quality of locally available raw materials increases
the costs for high quality imported sand.
Locally available raw material containing: Al2O3 = 0,12%;
Fe2O3 = 0,06 %; SiO2 = 99,7 %.
Local supplier of high quality silica sand.