Dielectric Constant 3.8 Fused Quartz Flour

• 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 high-quality Dielectric Constant 3.8 Fused Quartz Flour for precision applications.

Product Description

Discover our Grade A Fused Silica sand & powder with a Dielectric Constant of 3.8. Perfect for various applications requiring high purity and low dielectric loss.

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 Dielectric Constant 3.8 Fused Quartz Flour with high purity and low dielectric loss for electrical insulation 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.

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


• Solar crucible


• Quartz marble


• Powder coating


• Epoxy molding compound


• Epoxy potting compound


• Electrical insulation


• Refactories


• Filler for liquid type sealants


• Various types of resin fillers


• Resin substrates


• Precision casting


• Coating and painting


• Artificial marble

Fused Silica 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.

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 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 according to customer specifications.

Detailed Photos

Discover our premium Fused Silica for high clarity pictures. Ideal for various applications requiring exceptional purity and dielectric properties.

Packaging & Shipping

Discover our premium Fused Silica Package: 25kg Net Plastic Woven Bags on Pallets for safe delivery. Perfect for Dielectric Constant 3.8 Fused Quartz Flour.

Discover our high-quality Dielectric Constant 3.8 Fused Quartz Flour, ideal for electrical insulation with low dielectric loss and ultrafine particles.

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 material is then specially engineered into various forms such as lumps, cullet, ingots, sand, grain, granular, and powder flour. These forms are 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 not have any 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 Products

Welcome to Chemsize Fused Silica Products

Chemsize, a leading manufacturer of Fused Silica grains and powders, offers high-quality materials for various industries such as Refractory, Investment Casting, Technical Ceramic, and EMC fillers. Our Fused Silica materials are known for their exceptional purity, low iron content, and minimal impurities, resulting in low thermal expansion, high thermal shock resistance, and low electrical conductivity.

Our proprietary electric-arc fusion technique ensures that our Fused Silica is over 99.9% SiO2, meeting ISO-certified standards. With consistent chemistry, controlled particle size distribution, and extremely low thermal expansion coefficient, our products are ideal for foundry, refractory, investment casting, and other specialized applications.

Key Applications of Chemsize Fused Silica:

• Crucibles for solar cell production 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 investment casting

Our Fused Silica products are available in various forms, including precast shapes, big blocks, ramming mixes, resin fillers, EMC fillers, powder coatings, and more. Whether you need materials for high-temperature applications, flow control in steelmaking, or precision investment casting, Chemsize has the solution for you.

Contact us today to learn more about our Fused Silica products and tailored shipment options!

Introducing Chemsize Fused Silica

Chemsize Fused Silica is a leading supplier of raw materials and machinery for investment casting, with over 30 years of experience in the industry. Our Fused Silica flour offers numerous advantages over traditional Zircon Flour:

• Particle Shape: Our Fused Silica boasts superior particle shape, crucial for primary slurry formation.


• Decreased Material Consumption: With half the density of Zircon, Fused Silica allows for reduced material usage while maintaining viscosity and flow properties.


• Enhanced Permeability and Porosity: Fused Silica's lighter composition improves shell permeability and porosity compared to Zircon.


• Easier Knock-Out: Fused Silica facilitates easier shell removal post-casting due to its unique Cristobalite formation.


• Efficient Leaching and Shell Removal: Fused Silica aids in the leaching process and simplifies the removal of shell materials from cavities and holes.


• Consistency and Sustainability: Our Fused Silica, sourced from the world's largest producer in China, offers consistent quality and availability.


• Cost-Effective: Priced at US$0.56/kg FOB LIANYUNGANG PORT, Fused Silica provides a cost-effective alternative to Zircon.

Fused Silica Applications:

Our Fused Silica is ideal for induction furnace lining ramming material, offering superior performance in various applications.

FAQ:

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

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

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

A: Samples can be sent within 3-5 days, while 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 delivery time?

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

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