Introduction

The appearance of Si-Al silica is slightly yellow or white transparent with chemical molecular formula mSiO₂·nAl₂O₃·x H₂O Stable chemical properties, no combustion, insoluble in any solvent except strong alkali and hydrofluoric acid, has stronger surface polarity than fine pored silica gel, better adsorption and separation performance than fine hole silica gel, good thermal stability.

Application

This product has the characteristics of high specific surface, strong drying ability, it is a kind of widely used adsorbent, because of its high compressive strength, low wear, it has longer service life than ordinary fine bead silica gel, better performance and price ratio.This product is mainly used for: dry compressed air, dry natural gas,dry gas, dry liquefied gas.

If liquid water exist in the system, it is recommended to add about 20%(weight ratio) of water-resistant silica and aluminum adhesive as the protective layer.

Technical Specifications

Items			Specifications
Al₂O₃	%		2-3.5
Specific surface area	m²/g		700-800
25℃ Adsorption capacity %wt	RH=10%	≥	6.0
	RH=20%	≥	10.0
	RH=40%	≥	20.0
	RH=60%	≥	32.0
	RH=80%	≥	40.0
Bulk density	g/L≥		700-850
Crushing strength	N≥		180
Pore volume	mL/g		0.35-0.5
Moisture	%≤		3.0