Fused Silica Lumps/Sand/Grains/Powder/Flour with Sio2>99.9%

• Application: Rubber, Plastic, Chemical, Construction, Metallurgy, Ceramic, Casting, Glass, Refractory,Investment Casting
• Type: Fused Silica
• Sio2: >99.85%
• Fe2o3: <0.006%
• Xrd Test Result: Amorhous
• Transport Package: Plastic Woven Bag,Paper Bag,25kg Net Each,Pallet
• Model NO.: custom-made
• Origin: China Lianyungang
• HS Code: 32074000
• Production Capacity: 8000mt/Year

Product Description

Fused silica sand/grain/powder/flour introudce is as follows:

Fused Silica is made of high purity crystal silica from China Donghai-Xinyi by electrically fusing (fusing temperature 1800-2000ºC) to amorphous Silicon dioxide, then is specially engineered into lumps,cullet, ingots, sand,grain,granular and powder flour form designed for making PV fused silica crucible,thermal ceramic,refractory,EMC investment casting ceramic shell etc.

Fused Silica Specifications:
 

1.	Physical Properties
1.1	Composition		SiO2
1.2	Structure		Amorphous
1.3	Colour		Transparent or white
1.4	Melting Temperature		approx.1750ºC
1.5	Specific Gravity		2.21g/cm^3
1.6	Hardness		7 Mohs
1.7	Thermal Expansion		0.5*10^-6
2.	Chemical Properties
		Investment Casting Grade
2.1	SiO2	>99.85%
2.2	Al2O3	<100ppm
	The finer the power,the higher the Al2O3,as powder is produced by ball mill with Alumina ball.
2.3	Fe2O3	<60ppm for grains <100ppm for powder
2.4	CaO	<30ppm
2.5	Na2O	<30ppm
2.6	K2O	<30ppm

3.   Particle Size Distribution

		Standard
		10-20	30-50	50-100	-120	-200	-325
Mesh	Microns
+8	2360	<2
+12	1700	6-25
+16	1180	33-50
+20	850	25-45	<1
+30	600	13	25-40
+40	425		32-45
+50	300		15-30	<13
+70	212			30-60
+80	180		0-11			<1
+100	150			28-51	<10	<1
+140	106			4-16	7-13	<10
+200	75			<2	10-15	<10	<3
+325	45				14-20	15-30	4-11
Pan		<3	<2	<1	45-55	70-80	86-97

*Pan designates the percentage of fused silica passing the last reported screen for each size.

Fused Silica Pictures:









Package and Delivery:

Paper bags








Plastic Woven Bag of 25kg Net each,Then on Pallet:





Factory and Quality Control Pictures: