Reliable Supplier of Fused Silica Flour, Sand, and Powder Grades

• Customization: Available
• Certification: ISO
• Application: Rubber, Ceramic, Casting
• Model NO.: 200 mesh 325mesh D50 3-5,6-9,10-14,15-18 microns
• 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%
• 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 Crucible Grade Fused Silica Flour, a superior alternative to silica sand. Specializing in industrial silica powder for various applications.

Product Description

Grade A Fused Silica sand & powder for crucible applications. High purity industrial silica powder for investment casting and high-temperature use.

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-grade Crucible Grade Fused Silica Flour from Lianyungang Chemsize International Trading Co., Ltd. Ideal for various industrial applications.

		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.

Special Features:

• Extremely low coefficient of thermal expansion


• Consistent chemistry


• Carefully controlled particle size distribution

Applications:

• Thermal ceramic industry


• Refractory industry


• Investment casting industry


• EMC industry


• Solar crucible industry


• Quartz marble industry


• Powder coating industry

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


• Custom sizes available upon request

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

Company: 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.

Our company, Lianyungang Chemsize International Trading Co., Ltd., strictly selects 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 ingot, which is then processed into fused silica lump, sand, and powder according to customer requirements.

Detailed Photos

Discover our Crucible Grade Fused Silica Flour, a high-quality industrial silica powder perfect for investment casting and high-temperature applications.

Packaging & Shipping

Fused Silica Package and Delivery: 25kg net plastic woven bags on pallets. Supplier of Crucible Grade Fused Silica Flour.

Explore our Fused Silica Factory and Quality Control Pictures at Lianyungang Chemsize International Trading Co., Ltd. We are a leading supplier of Crucible Grade Fused Silica Flour, offering high-grade industrial silica powder alternatives for various applications.

Fused Silica Products

Fused Silica Making Process

Fused Silica is produced from high purity crystal silica through electric fusion at temperatures ranging from 1800-2000ºC. It is then specially engineered into various forms such as lumps, cullet, ingots, sand, grain, granular, and powder flour. These forms are ideal for creating 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


• No foreign materials allowed, such as string, plastic, carbon, wood, metal, or other contaminants


• Only conditional black dots are permitted


• 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 acceptable.

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 delivery times 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?

1. Provide your requirements or application details


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


3. Confirm samples and pay deposit for formal order


4. We will arrange 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 have a low defective rate (<0.2%). If any issues arise, we will send replacements and cover any losses.

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