Low Alkali Fused Silica Powder

• 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 Low Alkali Fused Silica Powder. Your trusted source for premium silica products!

Product Description

Discover our Grade A Fused Silica sand & powder with low alkali content for high purity and top quality performance. Trust the expertise of Lianyungang Chemsize International Trading Co., Ltd., your reliable supplier for premium silica products.

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 Low Alkali Fused Silica Powder with a thermal conductivity of 1.3w/m*k (20 ºC) and a dielectric constant of 3.8 (1MHz, 20 ºC). It also boasts an electrical conductivity of 3 μs/cm and precise 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

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:

• Epoxy molding compound, epoxy potting compound


• Electrical insulation


• Refractories, ceramic


• Filler for liquid type sealants, various types of resin fillers


• Resin substrates


• Precision casting


• Coating, painting


• Artificial marble

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.

Company name: Lianyungang Chemsize International Trading Co., Ltd.

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 in aluminum launders or other highly cyclical applications.

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 ingot, which is then processed into fused silica lump, sand, and powder based on customer requirements.

Detailed Photos

Discover our Low Alkali Fused Silica Powder for high clarity pictures. Top-quality quartz grains for superior performance. Trust the best at Lianyungang Chemsize.

Packaging & Shipping

Our Low Alkali Fused Silica Powder is packaged in 25kg plastic woven bags and placed on pallets for delivery. Trust us, Lianyungang Chemsize, for top-quality fused quartz products.

Lianyungang Chemsize International Trading Co., Ltd. offers top-quality Low Alkali Fused Silica Powder. Choose our premium product for industrial applications.

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 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:

1. Must not contain any unfused parts.


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


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


4. Black spot diameter should not exceed 2mm.


5. 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 Products

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 applications.

Key Features:

• Amorphous SiO2 content up to 99.9%


• Low iron (max 30ppm) and low impurities


• Low coefficient of thermal expansion


• High resistance to thermal shock


• Extremely low electrical conductivity

Production Process:

Our Fused Silica is manufactured using a proprietary electric-arc fusion technique, resulting in pure silica with over 99.9% SiO2 content. It meets ISO-certified standards, ensuring quality and consistency.

Applications:

Chemsize Fused Silica is used in various industries for applications such as crucibles for solar cell production, rollers in the glass industry, technical ceramics, investment casting, and more.

Specialty Products:

We offer specialty products tailored for specific applications and can provide homogeneously-blended products upon request.

Packaging Options:

Our standard packaging includes 25kg bags, 48 bags per pallet, or jumbo bags with a net weight of 1200kgs. Customized packaging options are available for bulk orders.

Investment Casting Grade:

Our Fused Silica is ideal for investment casting processes, providing volume stability and tight tolerance castings with easy shell removal.

Contact Us:

For more information on our Fused Silica products, please contact Lianyungang Chemsize International Trading Co., Ltd.

Introducing Chemsize Fused Silica

As a leading supplier of raw materials and machinery for investment casting for over 30 years, Chemsize offers Fused Silica as an alternative to Zircon Flour in the primary slurry. Here are the advantages:

• Particle shape: Chemsize Fused Silica boasts superior particle shape for optimal primary slurry performance.


• Decreased material consumption: With half the density of Zircon, Fused Silica allows for reduced material usage.


• Increased permeability and porosity: Fused Silica enhances shell permeability and porosity compared to Zircon.


• Easier knock-out: Fused Silica facilitates easier shell removal post-casting.


• Faster leaching and shell removal: Fused Silica aids in the leaching process and simplifies shell material removal.


• Consistency and sustainability: Chemsize Fused Silica from the world's largest production area ensures consistent supply and quality.


• Cost-effective: Chemsize Fused Silica is priced at US$0.56/kg FOB LIANYUNGANG PORT.

Application Areas:

Chemsize Fused Silica is widely used in coreless medium frequency furnaces and core induction furnaces for melting various metals and alloys.

FAQ:

Q1. Can I request a sample order for fused silica products?

A: Yes, we offer free samples shipped by ***/FEDEX/DHL.

Q2. What is the lead time?

A: Sample delivery takes 3-5 days, while bulk orders under 100mt are delivered within 15 days.

Q3. Is there a minimum order quantity for fused silica sand?

A: No, but lower quantities may result in higher average costs.

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

A: Goods are shipped promptly, with delivery times varying based on location.