products > hollow ceramic sphere
(cenosphere)

The characteristics of hollow ceramic spheres,
and the distinctive features of our production.

DENSITY

The bulk density hollow ceramic spheres are 0.32 ÷ 0.37 g/cc.
The bulk density doesn't increasing with spheres dispersivity even up to 100 microns. It is 25 - 30% less than that of other manufacturers.
This is done by the cycle of combustion the coal is 35% more than the high-temperature phase of a lengthy, and the cooling speed increased by 60% from passing flue gases through a special refrigerator. After such process the sphere's wall thickness is reduced by almost 40 - 55%. However, the strength of the wall is not decreasing, as the wall itself has very few defects.


FRACTION SIZE AND COMPOSITION

However, the existence of microspheres composed of a mixture of less than 60 microns and more than 250 microns limited and does not exceed 10%. Dimensions range is the fact that the original mixture no pronounced peak distribution, it offers a wide range of powders microspheres with narrow factional composition.
Commodity fraction: 0 ÷ 100 microns; 0 ÷ 500 microns; 100 ÷ 500 microns;
The custom order may be has different fraction size in the range of 0 ÷ 500 microns.


THERMAL CONDUCTIVITY

Thermal Micro-0.08 W/mx°K. at 20°C.
It is features the best, 25 - 30% resistance to the heat. This is because the fact that the comparable hollow ceramic sphere size of our production is a thin shell, and a inside greater degree of dilution gas.


STRENGTH

Limit strength of crushing - 3000÷4800 psi.
Hollow ceramic sphere after flotation process are receiving special heat treatment at a temperature of 1600°C. This helps to make the destruction of sealed, because of the fragile surface defects hollow ceramic sphere, as they isolate and remove debris from the mixture. This achieved permanency physical parameters hollow ceramic sphere with further work with it. Moreover, after such a heat hollow ceramic sphere not destroyed when imposing even in highly environment.