MICROSPHERES or CENOSPHERES are spherical alumina-silicate particles filled with nitrogen and carbon dioxide originating as a result of hard coal burning in power stations.
The granules (microspheres) transported together with slag to a sedimentation pond flow out over the water surface.
Microspheres are scooped from the water surface and they are transferred into a dripping chamber made of tarpaulin to lose excessive water. White microspheres occur naturally less frequent and are mainly used in applications, where high temperature, extreme heat and mechanical resistance are demanded. Also the brightness of particles are important to reflect heat as typical refractory material. Particle size of MICROSPHERES is from 5 to 500 / 300 / 160 micrometers (microns, μm).
ADVANTAGES
- High melting point 1300 – 1710 °C
- High compressive strength in composite solution and materials
- Non-flammable
- Improves thermal insulation
- Improves impact resistance
- Increases stiffness and nail/screw grip
- Reduce weight in composite solution and materials
- Rheological stable
- Chemically inert and non-absorbent
Alumina-silica spheres in our Microspheres AG have very low reactivity. The chemical composition makes our Microspheres AG extremely resistant to acids and alkalis. Microspheres AG are pH neutral and do not interfere or react chemically inside and outside the other products they are used in.
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Chemical name
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MICROSPHERES, CENOSPHERES |
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CAS / EINECS
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93924-19-7 / 300-212-6 |
Photo
Specification
Application
- Refractories
- Oilwell Cements
- Geothermal Cements
- Tumbling Media
- Double Glazing Sealants
- Window Profile Cores
- Brake Linings
- Clutch Facings
DRYMORTAR & CONCRETE
Ceramic tile Adhesive
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antisliding
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increase layer thickness
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improve workability
Renders, stuccos and plasters
Cements boards and fiber cement boards
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reduce weight
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improve processability
Shotcreteand spray mortars
WATERBORNE PAINTS & COATINGS
Texuralpaints, textures ands Thick layer paints
Jointfillers for gypsum boards (drywall)
Elastomeric waterproofing coating
Specialflooring
ASPHALT – BITUMEN
Waterproofing emulsions
Waterproofing membranes
Sound dampening membranes
Masticand putties
RESINS & MOLDING (MOLDED ELEMENTS)
Unsaturated polyester resins
Decorative elements based in epoxi resins
Polymersfor flooring & automotive parts
Synthetic marble & artificial stones
OILFIELD & REFRACTORIES
Lowdensity cements slurries
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important improve of thelubricafication of the systems
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reduction of weight
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better flow characteristics (sphereshape)
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reduced water absorption
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improved insulation value
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shrinkage and warping reduction
Refrac – Precast shapes (Firebricks, Burner blocks, etc…)
Refrac – Plastic masses, Fettling mix, Mortars
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