**0 sets of them have been continuously used for three years or
five years, which are specially used to manufacture closed
perlites, surface melt hollow ball perlite . In order to ensure the
vitrification process with self-service management, our company
uses six microcomputers to full-automatically control the softening
of the mineral sand, the instantaneous gasification of crystallized
water, the size of hollow balling, case vitrification melt closed
waterproof, glass case hardening, etc., the expanding technology
curve production process of closed perlite . During the present
five years, in China, *0% of surface melt hollow ball perlite that
are used for wall thermal mortar are produced by perlite expanded
furnaces manufactured by our company. At present, many countries in
the world, such as America, Canada, Australia, Harland, Thailand,
Russia, Korea, increasingly began to adopt our perlite expanded
furnaces to produce newly wall insulating materials, the
surface melt hollow ball perlite .
