• Yangzhuang Industrial Zone, Zhenwu Town, Jiangdu District, Yangzhou, Jiangsu Province, P.R. China
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Microporous sintered alumina

Short Description:

By special  technology  and  through modeling and  simulation, micropored sintered alumina  has  been  developed  and  produced,  featured  by  reduced  bulk  density,

3.3-3.4g/cm3, and significantly increased closed pores with diameters in micron or

sub-microns, leading to reduced thermal conductivity, while other properties remain equivalent to those of conventional sintered alumina.


Product Detail

Product Tags

Data sheet of JGW-99 microporous sintered alumina

  Specification Typical value
Chemical composition% Al2O3( By
subtraction method)
≥98.50 99
Na2O ≤0.50 0.32
SiO2 ≤0.30 0.16
Fe2O3 ≤0.12 0.09
Bulk densityg/cm³ ≤3.40 3.35
Closed porosity% ≥8.00 9.8

For energy saving purpose, efforts of reducing heat loss through working lining refractories without deteriorating their service performances are receiving increased importance and attention. Lightening refractory linings by using appropriately micropored sintered material is meaningful in reducing thermal conductivity, releasing structural stress and improving thermal shock resistance, while maintaining other key properties, which is contributive to achieving higher durability while lower heat loss.

The following advantages can be offered by using micropored sintered alumina to partially or completely replace conventional sintered alumina aggregates in refractories:

•    Reduced thermal conductivity, contributive to insulating and energy saving

•    Reduced material consumption, helpful to lighten refractory linings

•    No  degradation  in  strength  and  resistance  to  corrosive  media  attack,  due  to enhanced grain-matrix bonding.

•    Significantly improved thermal shock resistance.

Size availability:

Different sizes including 8-5 mm, 5-3 mm, 3-1 mm, 1-0 mm or other specific sizes according to customers’ requirements can be provided.

Product package:

25kg/bag, 1000kg/bag or other specific packages as per users’ requirements are available.


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