Stone surface cleaning method - uses micron size spherical particles as blasting agent

摘要

The blasting method is for the cleaning of stone surfaces in partic., the blasting agent being accelerated towards the surface by compressed air. Spherical particles are used, having a max. dia. of 250 microns, and are sucked into the current of compressed air. They can consist mainly of glass pellets, being sucked by the air at variable pressure into an ejector head, which can also be supplied with water. ADVANTAGE - Gentle but effective, being partic. for statues and monuments.