Fused Silica Flour with Controlled Particle Size

• Certification: ISO
• Application: Rubber, Ceramic, Casting
• 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%
• Model NO.: 325mesh 400mesh 600mesh 800mesh 1250mesh 2000mesh
• Amorphous Sio2: >99%
• Quartz Sio2: <0.1%
• Cristobalite Sio2: <0.1%
• Thermal Conductivity: 1.3W/M*K
• Dielectric Constant: 3.8(1MHz,20 )
• Electrical Conductivity: 3us/Cm
• 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 top-quality fused silica flour with controlled particle size. Specializing in high-purity fused silica, we provide customized silica powder for various applications.

Product Description

Discover our Grade A Fused Silica sand & powder with controlled particle size for high purity and top quality performance. Tailored to meet your specific needs.

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%

Fused Silica Flour with Controlled Particle Size: Thermal conductivity of 1.3 W/m*K at 20 ºC, dielectric constant of 3.8 at 1MHz, electrical conductivity of 3 μs/cm, and tailored 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

Fused Silica by Lianyungang Chemsize International Trading Co., Ltd.

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

Fused Silica Special Features:

• High purity amorphous powder


• Lowest coefficient of thermal expansion


• High resistance to thermal shock


• Low thermal conductivity


• Excellent electrical insulation and lower radiation

Fused Silica Applications:

• Thermal ceramic industry


• Refractory industry


• Investment casting


• EMC applications


• Solar crucible manufacturing


• Quartz marble production


• Powder coating

Other 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 as per customer's special requirement.

Third Party Test Report

Production Process

Fused Silica Production Process

Fused silica is a 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 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 based on customer requirements.

Detailed Photos

Discover our premium Fused Silica Flour with controlled particle size for high clarity pictures. Tailored to meet your specific needs.

Packaging & Shipping

Our Fused Silica Flour is delicately packaged in 25kg plastic woven bags, placed on pallets for secure delivery.

Lianyungang Chemsize International Trading Co., Ltd. offers high purity Fused Silica Flour with controlled particle size. Premium quality quartz sand for tailored applications.

Fused Silica Product Description

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 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 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 contact Lianyungang Chemsize International Trading Co., Ltd.

Chemsize Fused Silica

Chemsize is a leading manufacturer of Fused Silica grains and powders, essential raw materials for industries such as Refractory, Investment Casting, Technical Ceramic, and EMC fillers. Our Fused Silica materials have received excellent feedback from all our customers.

Key Features:

• Amorphous SiO2 up to 99.9% minimum


• Low iron content (30ppm max)


• Low impurities


• Very low coefficient of thermal expansion


• High resistance to thermal shock


• Extremely low electrical conductivity

Our unique electric-arc fusion technique ensures the production of Fused Silica with over 99.9% SiO2 purity, low thermal expansion coefficient, and high resistance to thermal shock. Our products are ISO-certified, chemically stable, and have extremely low conductivity.

Applications:

• Solar cell crucibles 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

Chemsize Fused Silica is ideal for various applications, including investment casting, foundry, refractory, and more. Our products are engineered for high performance and consistency.

Product Range:

• Fused Silica precast shapes


• Fused Silica ramming mix for coreless induction furnace


• Fused Silica for powder coating


• And many more specialized products

For tailored shipments or bulk orders, we offer flexible packaging options to meet our customers' needs.

Investment Casting Grade:

Our Fused Silica is widely used in investment casting processes for precision manufacturing in various industries such as automotive, aerospace, medical, and more.

Choose Chemsize Fused Silica for superior quality, performance, and reliability in your industrial applications.

Introducing Chemsize Fused Silica

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

• Improved particle shape for better primary slurry


• Reduced material consumption due to lower density


• Enhanced permeability and porosity for better shell quality


• Easier knock-out and shell removal


• Consistent quality and sustainable sourcing


• Cost-effective pricing at US$0.56/kg FOB LIANYUNGANG PORT

Fused Silica Applications:

Perfect for induction furnace lining ramming material, our Fused Silica is ideal for various applications in the metal casting industry.

Summary:

Our Fused Silica is sourced from the world's largest area of production, ensuring consistent quality and supply. Experience the benefits of using Fused Silica in your investment casting process today!

FAQ:

Q1. Can I request a sample order for Fused Silica products?

A: Yes, we offer free samples shipped via ***/FEDEX/DHL. Mixed samples are also available.

Q2. What is the lead time for samples and bulk orders?

A: Samples can be sent within 3-5 days. Bulk orders typically ship within 15 days for quantities up to 100mt.

Q3. Is there a minimum order quantity for Fused Silica sand?

A: No, there is no MOQ, but lower quantities may incur higher average costs.

Q4. How are the goods shipped and what is the estimated delivery time?

A: Goods are shipped promptly, and delivery times vary based on location.