Overview
Product Description
Third Party Test Report
Production Process
Detailed Photos
Packaging & Shipping

Basic Info.

Model NO.

0-1mm, 1-3mm, 3-5mm, 5-8mm, 200mesh, 325mesh

Amorphous Sio2

>99%

Quartz Sio2

<0.1%

Cristobalite Sio2

<0.1%

Transport Package

Paper Bag, Plastic Bag, Jumbo Bag, Pallet

Specification

SiO2>99.9%

Trademark

Chemsize

Origin

China Lianyungang

HS Code

32074000

Production Capacity

10000mt/Year

Product Description

Lianyungang Chemsize International Trading Co., Ltd. specializes in manufacturing high-quality amorphous silica sand and powder for dental material production. We offer top-notch service and superior quality products.

Amorphous Silica Sand for Dental Material Production

Grade A Fused Silica sand & powder for dental material production. High purity silica for refractory materials and silicon dioxide supplier.

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/cm³
1.6	Hardness		7 Mohs
1.7	Thermal Expansion		0.5*10^-6
2.	Chemical Properties
		Grade A	Grade B	Grade C
2.1	SiO₂	>99.9%	>99.85%	>99.7%
2.2	Al₂O₃	<100ppm	<150ppm	<0.05%
2.2	The finer the power,the higher the Al2O3,as powder is produced by ball mill with Alumina ball.
2.3	Fe₂O₃	<30ppm for grain	<60ppm	<0.05%
2.4	CaO	<30ppm	<60ppm	<0.02%
2.5	Na₂O	<30ppm	<60ppm	<0.02%
2.6	K₂O	<30ppm	<60ppm	<0.02%

Discover our Amorphous Silica Sand for Dental Material Production, ideal for dental ceramics, implants, and prosthetics. High purity and quality guaranteed.

		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

Fused Silica Products

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

Fused Silica Special Feature:

Fused Silica features an extremely low coefficient of thermal expansion, consistent chemistry, and carefully controlled particle size distribution.

Fused Silica Applications:

Fused Silica is used in industries such as thermal ceramic, refractory, investment casting, EMC, solar crucible, quartz marble, powder coating, etc.

Available Sizes:

0-1mm, 1-3mm, 3-5mm, 0.2-0.5mm, 0.1-0.5mm, 0.212-0.425mm, 0.125-0.212mm, -0.044mm, -0.045mm, 10mesh, 10-20mesh, 30-50mesh, 50-100mesh, -100mesh, -150mesh, -270mesh, 30-60mesh, 60-120mesh, 40-70mesh, 70-140mesh, 100-200mesh, 120F, 200mesh, 325mesh, 400mesh, 600mesh, 800mesh, 1250mesh, etc.

The particle size can be produced according to the customer's special requirements.

For more information, contact Lianyungang Chemsize International Trading Co., Ltd.

Fused Silica Production Process

Fused silica is high purity quartz sand that has been melted to form glass. Its high volume stability, low volumetric expansion, and high purity make fused silica a versatile material for refractory applications.

Raw Material

We strictly choose high purity silica sand (SiO2 > 99%) from Donghai/Xinyi as our raw material.

Manufacturing Process

The silica sand is melted at high temperatures (2000-2300 ºC) to form amorphous silicon dioxide glassy ingot, which is then cooled. The products are further processed into fused silica lump, sand, and powder according to customer requirements.

Fused Silica Making Process

Fused Silica is produced using high purity crystal silica from China Donghai-Xinyi. It is electrically fused at temperatures ranging from 1800-2000ºC to create amorphous Silicon dioxide. The resulting material is then engineered into various forms such as lumps, cullet, ingots, sand, grain, granular, and powder flour. These forms are specifically designed for manufacturing PV fused silica crucibles, thermal ceramics, refractories, EMC investment casting ceramic shells, and more.

Fused Silica Sand Appearance and Specifications:

Must not contain any unfused parts.

Should not have any foreign materials like string, plastic, carbon, wood, metal, or other contaminants.

Only conditional black dots are allowed; all other color dots are prohibited.

Black spot diameter should not exceed 2mm.

Total black dots quantity should be less than 10 per square meter when opening the big bag.

For any inquiries, please contact Lianyungang Chemsize International Trading Co., Ltd.

Chemsize Fused Silica

Welcome to Chemsize Fused Silica

Chemsize, a leading manufacturer of Fused Silica, offers high-quality grains and powders for various industries such as Refractory, Investment Casting, Technical Ceramic, and EMC filler. Our Fused Silica materials are renowned for their exceptional purity, low iron content, and minimal impurities, resulting in low thermal expansion, high thermal shock resistance, and low electrical conductivity.

Key Features:

Amorphous SiO2 up to 99.9% purity

Low iron content (30ppm max)

Low thermal expansion coefficient

High resistance to thermal shock

Extremely low electrical conductivity

Our proprietary electric-arc fusion technique ensures the production of Fused Silica with over 99.9% SiO2 purity, meeting ISO-certified standards. Chemsize Fused Silica is chemically stable, inert, and meticulously engineered for consistent quality and particle size distribution.

Applications:

Solar cell crucibles in the photo-voltaic industry

Rollers, castables, and mortars in the glass industry

Technical ceramic in the thermal resistance industry

Ceramic slurry in investment casting

Specialty Products:

We offer a range of specialty Fused Silica products tailored for specific applications, including resin fillers, EMC fillers, powder coating, and more. Our products are ideal for foundry, investment casting, and high-temperature applications in various industries.

Standard Packaging:

Our standard package includes 25kg bags, 48 bags per pallet, or jumbo bags with a net weight of 1200kgs. Customized bulk bag shipments are available upon request to meet specific customer needs.

Investment Casting Grade:

Our Fused Silica is widely used in investment casting processes, producing precision components for automotive, aerospace, medical, and other industries. The exceptional thermal properties and low thermal expansion coefficient of our Fused Silica ensure high-quality castings with tight tolerances and easy shell removal.

Contact us at Lianyungang Chemsize International Trading Co., Ltd. for more information on our premium Fused Silica products.

Introducing Chemsize Fused Silica

Chemsize Fused Silica is a leading supplier of raw materials and machinery for investment casting foundries. With over 30 years of experience, we offer Fused Silica flour as an alternative to Zircon Flour for primary slurry production, providing numerous advantages:

Improved particle shape for better primary slurry performance

Reduced material consumption due to lower density

Enhanced permeability and porosity for better shell quality

Easier knock-out and shell removal process

Consistent quality and sustainable sourcing from the world's largest Fused Silica production area in China

Competitive pricing at US$0.56/kg FOB LIANYUNGANG PORT

Application Areas:

Our Fused Silica products are ideal for use in induction furnace lining ramming materials, offering high purity and efficient performance for various metal melting applications.