A process for the manufacture of antistatic ceramic tiles with low water absorption.

摘要

A process for the manufacture of antistatic ceramic tiles with a low water absorption comprises the step, effected prior to and separately from that of batching the raw materials required for the ceramic body of the tile, of mixing together at least two compounds having a certain electrical conductivity in relation to the raw materials, whereupon the blend of compounds obtained is ground and added to the raw materials; the compounds in question are metal oxides, one of which, in particular, an oxide of antimony. The effect of admixing the relatively conductive metal oxides is to modify the insulating properties of the raw materials, causing them to take on the characteristics of a semiconductor, in such a manner that electrostatic charges can be dispersed through the ceramic body of the tile.