High Thermal Expansion Fused Quartz Sand

• 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. specializes in manufacturing high-quality fused silica sand and powder. We offer the best service and top-notch quality products!

Product Description

Grade A Fused Silica sand & powder Specifications:

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

Product Name: High Thermal Expansion Fused Quartz Sand

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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%

High Thermal Expansion Fused Quartz Sand with thermal conductivity of 1.3 W/m*K, dielectric constant of 3.8, and electrical conductivity of 3 μs/cm. Ideal for various 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:

• High purity amorphous powder


• Lowest coefficient of thermal expansion


• High resistance to thermal shock


• Low thermal conductivity


• Excellent electrical insulation and lower radiation

Applications:

• Thermal ceramic industry


• Refractory industry


• Investment casting


• EMC


• Solar crucible


• Quartz marble


• Powder coating


• Epoxy molding compound


• Epoxy potting compound


• Electrical insulation


• Refactories and ceramics


• Filler for liquid type sealants


• Various types of resin fillers


• Resin substrates


• Precision casting


• Coating and 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. Particle size can be produced as per customer's special requirement.

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.

Raw Material

We source high purity silica sand (SiO2 > 99%) from Donghai/Xinyi for our production process.

Manufacturing Process

The silica sand is melted at high temperatures (2000-2300 ºC) to form amorphous silicon dioxide glassy ingot, which is then cooled and processed into fused silica lump, sand, and powder based on customer requirements.

Company Information

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

Detailed Photos

Fused Silica high clear Pictures for various applications. High Thermal Expansion Fused Quartz Sand from Lianyungang Chemsize International Trading Co., Ltd.

Packaging & Shipping

High Thermal Expansion Fused Quartz Sand in 25kg plastic woven bags on pallets for easy handling and delivery.

Explore our Fused Silica Factory and Quality Control Pictures at Lianyungang Chemsize International Trading Co., Ltd. for High Thermal Expansion Fused Quartz Sand.

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 specially engineered into various forms such as lumps, cullet, ingots, sand, grain, granular, and powder flour. These forms are designed for making 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 not have any foreign materials like string, plastic, carbon, wood, metal, or other contaminants.


• Only conditional black dots are allowed; all other color dots are forbidden.


• 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 Products

Chemsize, a leading manufacturer of Fused Silica grains and powders, offers high-quality materials for various industries. Our Fused Silica boasts a fusion ratio of up to 99.9% Amorphous SiO2, low iron content (max 30ppm), and minimal impurities, resulting in low thermal expansion, excellent thermal shock resistance, and low electrical conductivity.

Our proprietary electric-arc fusion technique ensures the purity of our Fused Silica, exceeding 99.9% SiO2. With ISO-certified standards, our Fused Silica is inert, chemically stable, and has extremely low conductivity. The carefully controlled particle size distribution and consistent chemistry make our products ideal for foundry, refractory, investment casting, and specialized applications.

Chemsize Fused Silica is widely used in various industries, including solar cell production, glass manufacturing, thermal resistance applications, investment casting, and more. Our products range from crucibles and rollers to ramming mixes and ceramic welding materials, all designed for high-performance and reliability.

Whether you need Fused Silica for EMC fillers, powder coating, or hot repair in glass furnaces, Chemsize has a solution for your specific requirements. Our products are tailored for precision casting, offering tight tolerance castings and easy shell removal.

Choose Chemsize for top-quality Fused Silica products that meet the demands of modern industries with exceptional thermal properties, chemical stability, and performance.

Introducing Chemsize Fused Silica

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

• Enhanced particle shape for better primary slurry performance


• Decreased material consumption due to lower density


• Improved permeability and porosity for superior shell quality


• Easier knock-out and faster leaching process


• Consistent quality and sustainable sourcing from China


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

Fused Silica Applications:

Perfect for induction furnace lining ramming material, Chemsize Fused Silica offers high purity and reliability.

Summary:

Choose from acidic, neutral, or alkaline ramming materials for various furnace applications.

FAQ:

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

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

Q2. What is the lead time?

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

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

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