Ultra-Fine Fused Silica Powder Supplier Al2O3 Content <0.03%

• Certification: ISO
• Application: Rubber, Ceramic, Casting
• Type: Quartz
• 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%
• Model NO.: 200 mesh 325mesh D50 3-5,6-9,10-14,15-18 microns
• 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. is a leading supplier of high-quality fused silica sand and powder for precision casting and molding applications. Trust us for superior service and top-notch quality!

Product Description

High purity fused silica sand & powder for precision casting, investment casting, and refractory applications. Supplier of quality silica-based 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%

Particle Size Distribution

Discover high purity silica powder for epoxy molding compounds from Lianyungang Chemsize International Trading Co., Ltd. Supplier of precision casting materials and quartz-based products.

		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 Product Description

Fused Silica

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

Special Features:

• Extremely low coefficient of thermal expansion


• Consistent chemistry


• Carefully controlled particle size distribution

Applications:

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, 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.

Particle size can be produced according to customer's special requirements.

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

Third Party Test Report

Production Process

Product Description:

Lianyungang Chemsize International Trading Co., Ltd. specializes in the production of fused silica, a high-purity quartz sand that is melted to form glass. Fused silica offers high volume stability, low volumetric expansion, and exceptional purity, making it ideal for various refractory applications, including aluminum launders.

We meticulously select high-purity silica sand (SiO2>99%) from Donghai/Xinyi as our raw material. Through a process of melting at high temperatures (2000-2300 ºC) and subsequent cooling, the silica sand transforms into amorphous silicon dioxide glassy ingot. Our products are further refined into fused silica lumps, sand, and powder to meet the specific requirements of our customers.

Detailed Photos

Discover our high-quality Fused Silica for precision casting and molding applications. Trust Lianyungang Chemsize for superior silica products.

Packaging & Shipping

Fused Silica Package and Delivery: 25kg Net Plastic Woven Bags on Pallets. Supplier: Lianyungang Chemsize International Trading Co., Ltd.

Fused Silica Factory and Quality Control Pictures:

Explore our state-of-the-art facility and rigorous quality control measures at Lianyungang Chemsize International Trading Co., Ltd., a leading supplier of high-quality silica-based products.

Fused Silica Making Process

Fused Silica is produced from high purity crystal silica sourced from China Donghai-Xinyi. It is electrically fused at temperatures ranging from 1800-2000ºC to form 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:

• No unfused parts are allowed.


• No foreign materials such as string, plastic, carbon, wood, metal, or other contaminants are permitted.


• Only conditional black dots are acceptable.


• Black spot diameter should not exceed 2mm.


• Total black dots quantity should be less than 10 per square meter.

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?

A: Samples are typically sent within 3-5 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 delivery time?

A: We ship via DHL, UPS, FedEx, or *** with an average delivery time of 3-5 working days. Sea shipments may take 7-40 days depending on the distance.

Q5. What is the process for ordering fused silica powder products?

A:

1. Provide your requirements or application details.


2. We will quote based on your needs or offer suggestions.


3. Confirm samples and pay a deposit for the formal order.


4. We will proceed with production.

Q6. Can my logo be printed on the packages?

A: Yes, please inform us before production and confirm the design based on our sample.

Q7. How are faulty products handled?

A: Our products undergo strict quality control, with a defective rate of less than 0.2%. In case of any issues, we will replace the products and cover any losses.

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