White Cenosphere/Fly Ash Cenospheres /Microspheres Powder - 20, 30, 40~180meshes as per your request

white,grey, 20, 30, 40~180meshes, low density,chemical resistance, used in chemical,coating,print, direct factory - details see: http://www.sourcingmetals.com/white-cenosphere-fly-ash-cenospheres-microspheres-powder-10195423
Place of Origin: Hebei China (Mainland)Shape: PowderSiO2 Content (%): 56~62%Al2O3 Content (%): 33~38%
MgO Content (%): 0.8~1.2%CaO Content (%): 0.2~0.4%Refractoriness (Degree): Common (1580°< Refractoriness< 1770°)CrO Content (%): 0.1~0.3%
SiC Content (%): 0.1~1.4%Model Number: 20, 30, 40~180meshes as per your requestBrand Name: BanyueColor: white,gray
Feature: low density,chemical resistanceApplication: used in chemical,coating,print  
White Cenosphere/Fly Ash Cenospheres /Microspheres Powder
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White Cenosphere/Fly Ash Cenospheres /Microspheres Powder

Description

A cenosphere is a light weight, inert, hollow sphere made largely of silica and alumina and filled with air or inert gas, typically produced as a byproduct of coal combustion 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. Cf. glass microspheres.

Cenospheres are unique free flowing powders composed of hartd shelled, hollow, minute spheres.Cenospheres are hard and rigid, light, waterproof, innoxious, and insulative. This makes them highly useful in a variety of products, notablyfillers. Cenospheres are made up of silica, iron and alumina. Cenospheres have a size range from 1 to 500 microns with an average comprehesive strength of 3000+Psi.

Chemical composition

SiO2Al2O3Fe2O3SO3CaOMgOK2Na2O
56~6233~382~40.1~0.20.2~0.40.8~1.20.5~1.10.3~0.9

physical performance of hollow microsphere

itemTest Metric
shapehigh flow spherical powergrain diameter (um)10-400
colorshallow grayspecific resistance(Ω.CM)1010-1013
actual density0.5-0.8Moh’s hardness6-7
bulk density (g/cm3)0.3-0.5PH value6
refractoriness°C1750melting point (°C)≥1400
thermal diffusivity (m2/h)0.000903-0.0015thermal conductivity (w/m·k)0.054-0.095
compression strength (Mpa)≥350refractive index1.54
Burning loss rateoil absorption rate (g(oil)/g)
0.68-0.69

Packaging Detail:50kg/bag or as customers' requirement
Delivery Detail:After received deposit within two weeks

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