Hollow Glass Microspheres (Cenosphere)

Hollow Glass Microspheres (Cenosphere) technical grades and source-listed specifications for customer review.

$Hollow glass microspheres (cenospheres) refractory raw material$

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Hollow Glass Microspheres (Cenosphere) is listed in GWECO’s Industrial & Refractory Materials Catalog, Revision 4 (October 2026), under Other Refractory Materials.

Source-listed technical profile: DY R-6.

Contact GWECO with the required grade, particle size, quantity and delivery destination to confirm current availability, packaging and shipment requirements.

Source-listed sizes

DY R-6: 0.45 mm–0.1 mm

Source-listed size options; current availability requires inquiry.

GWECO did not perform the original testing. Source-reported results do not certify any particular shipment or production lot. Confirm current availability and shipment requirements with GWECO.

Available grades and sizes

DY R-6: 0.45 mm–0.1 mm

Technical specifications

DY R-6

0.45 mm–0.1 mm

Source-listed sizes — DY R-6

Source-listed size / fraction
0.45 mm–0.1 mm

CHEMICAL COMPOSITION

Component	Reported range
SiO₂	70–75%
Fe₂O₃	0.5–1.1%
Al₂O₃	11–14%
MgO	0.5–1%
CaO	0.5–1%
K₂O	3–5%
NaO	3–5%
L.O.I.	4–8%

TECHNICAL SPECIFICATION

Property	Source value
Grain size	0.45 mm–0.1 mm
Bulk density	200–300 kg/m³
True density	≤1 g/cm³
Floating rate	≤10%
Heat-resistance temperature	1300°C

Property