SILICA SAND
   HIGH PURITY SILICA   SAND
   SILICA SAND FOR   OPTICAL GLASS
  DELIBERATED SILICA   SAND
  CRYSTALLINE SILICA   POWDER
CRYSTALLINE SILICA   POWDER
 
 
 
 
Crystalline silica powder
  
  Crystalline silica powder is produced from white natural silica stone, it is refined through manmade selecting, ex-ion water dispose, grinding, filtrating drying and sieving etc. For its high content, pure white color, stable physical and chemical properties and reasonable controllable particle size distribution, it is widely used as material for epoxy potting compound, epoxy mould compound of electronic and electrical industries and engineering plastics, silicon rubber,
ceramic and investment casting, paint and ink, etc.
We also can supply active silica powder of every specification, sediment time not lower than 45 minutes.		  
 
Chemical AnalysisAnd Partica Size Distribution / Specification
QG300
QG400
 QG600
QG1000
QG2500
 QG6000

Chemical Analysis
　　SiO2     (%)
99.80
99.80
 99.80
99.80
99.80
 99.80
Fe2O3    (%)
0.01
0.01
 0.01
0.01
0.01
 0.015
Al2O3    (%)
0.015
0.015
 0.015
0.02
0.02
 0.02
K2O 　(%)
0.005
 0.005 0.005 0.008 0.008 0.008
Moisture  (%) 0.1 0.1 0.1 0.1 0.1 0.1
Loss of lgnition
0.15
0.15
 0.15
0.15
0.15
 0.15

Water extraction liquid

Na+ (ppm)
<2
<2
 <2
<3
<3
 <3
Cl - (ppm)
<5
<5
 <5
<5
<5
 <5
EC(us/cm)
<5
<5
 <5
<5
<10
 <10
PH
5.5-7.5
Medium Particle Size D50 (um) 20-25 17-20 15-17 9-12 3 - 5 1.5-2.5
 
     
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