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Expanded perlite powder

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EASTM EXPANDED PERLITE POWDER apply to low temperature air separation and super low temperature filling apparatus of Hydraulic Oxygen, Hydraulic Nitrogen, Hydraulic Argon Freezing Petroleum Hydraulic Gas. It is an ideal freezer and super low temperature keeping and heat insulation material. It has been used in wet-keeping for equipment throughout the country and oxygen manufacturing trade. We have become the main manufacturer and supplier of low temperature equipments both home and abroad. The packages of the products have inner plastic sealing bag, outer weaving bag and temperature keeping & pressure adding packing.

Melting point (burnable): Experimental temperature is over 1000℃. No clear melting phenomenon. The Product must be placed in dry places. Moist, stepping and pressing are forbidden.

Technical Data Sheet
Properties		Physical Index
Item	Unit	Data
Type		EASTM-50-80
Loose density	kg/m3	50~80
Compacted density	kg/m3	55~95
Use temperature	℃	-300~+800
Thermal conductivity at 0 deg C	w/m.k	0.023
Thermal conductivity at 70 deg C	w/m.k	0.049
Mean particle diameter	mm	0.2~0.5
The dimension (the diameter) of perlite particle/grain size	1.25-0.28 mm	90%
The dimension (the diameter) of perlite particle/grain size	< 0.28mm	< 10%
Small-scale fire test		No sparking or ignition
Combustibility (by test method E 136)		Noncombustible
Rest Angle	Degree	33～37
Capillarity	h[mm/h]	<200
Organic material content	%	<0.1
Co-efficient of water repellent, Min.	%	98
Moisture absorption, weight %/14 days, max	%	0.50
Chemical composition: %	SiO2	73-80
	Al2O3	11-17
	Fe2O3, CaO	0.2-1.5
	MgO2	1-3
	K2O	3.5-5.5
	Na2O	2-4.5

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Expanded perlite powder

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