Cenospheres is a kind of fly ash hollow ball can float in the water, gray-white, thin-walled hollow, light weight, capacity of 720kg/m³ (heavy), 418.8kg/m³ (light), particle size of about 0.1mm, the surface of the closed and smooth, thermal conductivity is small, refractoriness ≥ 1610 ° C, it is an excellent heat preservation refractory, widely used in the production of lightweight castables and oil drilling aspects. The chemical composition of  Cenospheres is dominated by silica and aluminum trioxide, with fine particles, hollow, lightweight, high strength, wear-resistant, high temperature resistance, thermal insulation, insulation and flame retardant and other functions, is now widely used as one of the raw materials for refractory materials.

Specification:

20 mesh, 30 mesh, 40 mesh, 50 mesh, 60 mesh, 80 mesh, 100 mesh, 150 mesh, 200 mesh, can be processed according to customer requirements.

• High Refractoriness

Cenospheres of the main chemical composition of silicon, aluminum oxide, of which silica is about 50-65%, aluminum oxide is about 25-35%. Because the solubility point of silicon dioxide is as high as 1725 degrees Celsius, the solubility point of aluminum oxide is 2050 degrees Celsius, which is a high fire-resistant material. Therefore, Cenospheres have a very high refractoriness, generally up to 1600-1700 degrees Celsius, making it an excellent high-performance refractory materials.

• Light Weight Heat Insulation  

Cenospheres wall thin hollow, cavity for the semi-vacuum, only a very small amount of gas (N2, H2 and CO2, etc.), heat conduction is extremely slow and minimal. So the drift beads are not only light (capacity 250-450kg/m3), and excellent thermal insulation (thermal conductivity at room temperature 0.08-0.1), which lays the foundation for it to show its strength in the field of lightweight thermal insulation materials.

• Hardness High Strength

Due to the  Cenospheres is a silica-aluminum oxide mineral phase (quartz and mullite) formed by the hard vitreous body, the hardness can reach Moh's 6-7, static compressive strength of up to 70-140MPa, the true density of 2.10-2.20 g/cm3, so the  Cenospheres have high strength. High strength.

• Insulation Is Not Conductive

General insulator resistance are lower with the increase in temperature, Cenospheres on the contrary, with the increase in temperature resistance increases. This advantage is other insulating materials do not have. Therefore, it can be produced is an excellent insulating material.

• Fine Particle Size, Large Specific Surface Area

Cenospheres naturally formed particle size of 1-250 microns. Specific surface area is 300-360g/cm2, about the same as cement. Therefore,  Cenospheres do not need to be milled and can be used directly. The fineness can meet the needs of various products.

Applications:

• Refractory Thermal Insulation Materials

Such as lightweight sintered refractory bricks, lightweight no-burn refractory bricks, casting thermal insulation risers, pipe thermal insulation shell, fireproof thermal insulation coatings, thermal insulation paste, composite thermal insulation dry powder, lightweight thermal insulation wear-resistant glass fiber reinforced plastic,

• Construction Materials

Building decoration, advanced road pavement, roof waterproofing and thermal insulation coating, road engineering, modified bitumen, etc.

• Petroleum Industry 

Oilfield cementing, pipeline anticorrosion insulation, submarine oil fields, floating devices, oil well drilling mud reducer, oil and gas pipelines and other aspects.

• Insulating Materials

Plastic activation filler, high temperature and high voltage insulators, etc.,.

• Paint Industry

Paints, inks, adhesives, stealth coatings, insulating paints, anticorrosive paints, floor leveling paints, high-temperature fireproofing paints, interior and exterior wall paints, thermal insulation paints, floor paints, automotive putty, atomic ash, etc.,;

• Aerospace And Space Development

Satellites rockets, spaceships surface composite materials, satellite fireproof layer, marine equipment, ships, deep-sea submarines, etc.;

• Plastic Industry

Such as automobile trim, instrument panel, home appliance shells, fans, speakers, lamps and lanterns total bearing, castings, gears, structural parts, zippers, tubes, plates and so on.

• Fiberglass Reinforced Plastic Products

All kinds of fiberglass reinforced plastic products, man-made big polytechnic stone, fiberglass reinforced plastic ships, arts and crafts, etc..