High Purity Fused Silica for Investment Casting

• Customization: Available
• Certification: ISO
• Application: Rubber, Ceramic, Casting
• Model NO.: 10-20mesh, 20-50, 30-50, 50-100, 200mesh 325mesh
• 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

Discover high purity fused silica for investment casting by Lianyungang Chemsize International Trading Co., Ltd. - your top-quality fused quartz supplier!

Product Description

Discover our Grade A Fused Silica sand & powder for Investment Casting applications. High purity, low iron content, and thermal shock resistance make it ideal for various industrial uses.

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 High Purity Fused Silica for Investment Casting, ideal for various applications requiring low iron content and high thermal stability.

		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:

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...

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

Company name: 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, 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 based on customer requirements.

Detailed Photos

Discover our High Purity Fused Silica for Investment Casting, ideal for various applications requiring low iron content and high thermal stability.

Packaging & Shipping

High Purity Fused Silica in 25kg plastic woven bags on pallets for Investment Casting applications. Supplier: Lianyungang Chemsize International Trading Co., Ltd.

High Purity Fused Silica for Investment Casting

Explore our top-quality fused silica for investment casting applications. Ideal for refractory materials, resin fillers, and more. Contact us for customized solutions!

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 processed into lumps, cullet, ingots, sand, grain, granular, and powder flour forms. These 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:

• Must not contain any unfused parts.


• Should be free of foreign materials such as strings, plastic lines, carbon, wood, metals, 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

Chemsize is a leading manufacturer of Fused Silica grains and powders, essential raw materials for various industries such as Refractory, Investment Casting, Technical Ceramic, and EMC fillers. Our Fused Silica materials are highly acclaimed by our customers for their exceptional quality.

Key Features:

• Amorphous SiO2 content up to 99.9% minimum


• Low iron content (maximum 30ppm) and low impurities


• Very low coefficient of thermal expansion


• High resistance to thermal shock


• Extremely low electrical conductivity

Our unique electric-arc fusion technique ensures the production of Fused Silica with over 99.9% SiO2 purity, low thermal expansion coefficient, and excellent thermal shock resistance. Our products are ISO-certified, inert, chemically stable, and have extremely low conductivity.

Applications:

• Crucibles for solar cell production in the photo-voltaic industry


• Rollers, castables, mortars, and forming tools in the glass industry


• Technical ceramic in the thermal resistance industry


• Ceramic slurry in the investment casting industry

Chemsize Fused Silica is ideal for various applications, including investment casting, flow control in steelmaking, glass rolls, and more. Our products are available in standard 25kg bags, bulk bags, and tailored shipments to meet customer preferences.

Experience the superior quality and performance of Chemsize Fused Silica for your specialized industrial needs.

Introducing Chemsize Fused Silica

Chemsize Fused Silica is a leading supplier of raw materials and machinery for investment casting processes, with over 30 years of experience. We recommend using Fused Silica flour in your primary slurry due to its numerous advantages:

• Better particle shape for improved primary slurry quality.


• Reduced material consumption due to lower density compared to Zircon.


• Increased permeability and porosity for better shell quality.


• Easier knock-out and shell removal for enhanced efficiency.


• Consistent and sustainable sourcing from the world's largest Fused Silica production area.


• Competitive pricing at US0.56/kg FOB LIANYUNGANG PORT.

Fused Silica Applications:

Our Fused Silica is ideal for induction furnace lining ramming material, offering high purity and reliable performance. It is suitable for various applications in medium frequency furnaces, including melting different types of metals and alloys.

FAQ:

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

A: Yes, we provide free samples via ***/FEDEX/DHL, with mixed samples accepted.

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, but lower quantities may result in higher average costs.

Q4: How are the goods shipped and what is the estimated delivery time?

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

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