Perlit 92 Kft., Pálháza

The perlite is an acidic, glassy volcanic rock containing a certain amount of adherent water and a small amount of crystalline phase, too (feldspar, quartz etc.) By the effect of an abrupt warming up the perlite gets into a pyroplastic state and the pressure of the inner adherent water creates a spatial expansion. The extent of the thermal expansion changes depending on the quality of the raw material, the expansion temperature and time between 1:10 and 1:20. Hungarys only one perlite quarry is to be found in Pálháza. The quarry has been in operation since 1959. The milling, drying and grading of perlite is made in a dressing plant near-by the quarry, according to the demand of the customers. Besides supplying the domestic market the majority of the produced perlite is sold to foreign customers. We perform our work on the basis of the Declaration on Quality Policy of the ISO 9001 Quality Assurance System qualified by TÜV CERT. Major applications of the expanded perlite: