Controlled Expansion Fused Silica Grains 3-5mm

• Customization: Available
• Certification: ISO
• Application: Rubber, Ceramic, Casting
• Model NO.: 0-1mm,1-3mm,3-5mm,5-8mm, 200mesh,325mesh,400mesh
• Fused Silica Sand: 0-1mm,1-3mm,3-5mm,4-10mesh,10-20,20-50,50-100mesh
• Fused Silica Powder: -100,-120f,-150L,200f,270f,325mesh
• Fe2o3: <0.003%
• Al2O3: <0.03%
• 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. offers high-quality Controlled Expansion Fused Silica Grains (3-5mm) for various industrial applications. Customize your silica needs with our precision-engineered products.

Product Description

Discover our Grade A Fused Silica sand & powder, including Controlled Expansion Fused Silica Grains 3-5mm. Perfect for industrial, optical, and aerospace applications.

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
		Grade A	Grade B	Grade C
2.1	SiO2	>99.9%	>99.85%	>99.7%
2.2	Al2O3	<100ppm	<150ppm	<0.05%
	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 Controlled Expansion Fused Silica Grains 3-5mm for high-quality industrial applications. Customizable and top-grade silica for various industries.

		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.

Third Party Test Report

Production Process

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, such as aluminum launders.

At Lianyungang Chemsize International Trading Co., Ltd., we carefully select high purity silica sand (SiO2 > 99%) from local Donghai/Xinyi as our raw material. The silica sand is melted at high temperatures (2000-2300 ºC) to form amorphous silicon dioxide glassy ingots, which are then processed into fused silica lumps, sand, and powder according to customer requirements.

Detailed Photos

Discover our top-grade Controlled Expansion Fused Silica Grains (3-5mm) for industrial applications. Precision engineered for quality and performance.

Packaging & Shipping

High-quality 3-5mm Controlled Expansion Fused Silica Grains in 25kg plastic woven bags on pallets. Ideal for various industrial applications.

Fused Silica Factory and Quality Control Pictures

Explore images of our Controlled Expansion Fused Silica Grains 3-5mm production at Lianyungang Chemsize International Trading Co., Ltd.

Fused Silica Product Description

Welcome to Lianyungang Chemsize International Trading Co., Ltd.

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 engineered into various forms such as lumps, cullet, ingots, sand, grain, granular, and powder flour. These forms are ideal 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 be free of foreign materials like strings, plastic lines, 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 feel free to contact us!

Chemsize Fused Silica

Lianyungang Chemsize International Trading Co., Ltd. is a leading manufacturer of Fused Silica grains and powders. Our Fused Silica materials are used in various industries such as Refractory, Investment Casting, Technical Ceramic, and EMC filler. With a fusion ratio of up to 99.9% Amorphous SiO2, low iron content (30ppm max), and minimal impurities, our Fused Silica offers low thermal expansion, high thermal shock resistance, and low electrical conductivity.

Our unique electric-arc fusion technique ensures the production of pure Fused Silica with over 99.9% SiO2 content. This amorphous material has a low coefficient of thermal expansion, excellent thermal shock resistance, and meets ISO-certified standards. Chemsize Fused Silica is chemically stable, inert, and has extremely low conductivity.

Our Fused Silica products are engineered for foundry, refractory, investment casting, and other specialized applications. They feature an extremely low thermal expansion coefficient, consistent chemistry, and precise particle size distribution. The material is highly insulative with low thermal conductivity, making it ideal for applications like steelmaking and glass rolls.

We offer standard packaging in 25kg bags, 48 bags per pallet, or jumbo bags with a net weight of 1200kgs. Customized bulk bag shipments are available upon request.

Applications of Fused Silica:

• Crucibles for solar cell production in the photo-voltaic industry


• Rollers, castables, mortars, and forming tools in the glass industry


• Technical ceramics in the thermal resistance industry


• Ceramic slurry in the investment casting industry

Our Fused Silica is also used in various applications such as acidic refractory, precast shapes, ramming mixes, resin fillers, EMC fillers, powder coating, and more.

Investment Casting Grade:

Our Fused Silica is ideal for investment casting, also known as Precision casting or the lost-wax process, catering to industries like automotive, military, aerospace, medical, commercial, and recreational markets.

Introducing Chemsize Fused Silica

Discover the advantages of using Chemsize Fused Silica in your investment casting process:

• Particle Shape: Our quality offers better particle shape for your primary slurry.


• Decreased Material Consumption: Replace Zircon with Fused Silica to reduce material usage.


• Increased Permeability and Porosity: Fused Silica enhances shell permeability.


• Easier Knock-Out: Fused Silica facilitates easier shell removal post-casting.


• Faster Leaching and Shell Removal: Simplify the leaching process with Fused Silica.


• Consistency and Sustainability: Our Fused Silica from China ensures consistent supply.


• Affordable Pricing: Get Fused Silica at US$0.56/kg FOB LIANYUNGANG PORT.

Fused Silica Applications:

Used in coreless medium frequency furnaces and core induction furnaces for various metal melting processes.

FAQ:

Sample Order: Request free samples for testing.

Lead Time: Samples sent within 3-5 days; orders delivered within 15 days for quantities up to 100mt.

MOQ: No minimum order quantity, but lower quantities may incur higher costs.

Shipping: Samples shipped via ***/FEDEX/DHL.