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Cenosphere_edited.jpg

Cenosphere

A cenosphere is a lightweight, inert, hollow sphere made largely of silica and alumina and filled with air or inert gas, typically produced as a coal combustion byproduct at thermal power plants. The color of cenospheres varies from gray to almost white and their density is about 0.4–0.8 g/cm3, which gives them a great buoyancy.  Cenospheres are hard and rigid, light, waterproof and insulative. This makes them highly useful in a variety of products, notably as Cement Additives for Oil-well drilling, fillers etc

Specification
NM75
NM80
NM85
Passing through 50 microns
0-5%
0-5%
0-5%
Passing through 300 microns
98%
98%
98%
Alkalis
2% max
2% max
2% max
Fe2O3
1-3%
1-3%
1-3%
Al2O3
25-35%
25-35%
25-35%
SiO2
50-60%
50-60%
50-60%
Sinkers
3% max
3% max
3% max
Moisture
1% max
1% max
1% max
Appearance
Off White Powder
Off White Powder
Off White Powder
Hydraulic Crush Resistance (% of breakage at 3000 psi
25-30%
25-30%
25-30%
Specific Gravity (density)
0.75-0.80 g/cc
0.80-0.85 g/cc
0.85-0.95 g/cc
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