Ultra-Fine Investment Casting Silica Flour for Foundries

• 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. offers high-quality Ultra-Fine Investment Casting Silica Flour for foundries, ensuring top-notch service and quality.

Product Description

Discover our Ultra-Fine Investment Casting Silica Flour for Foundries, offering high purity quartz sand for premium fused silica applications.

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 our Ultra-Fine Investment Casting Silica Flour for Foundries, offering high purity quartz materials ideal for investment casting 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 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.

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

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.

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 Ultra-Fine Investment Casting Silica Flour, perfect for foundries requiring high purity quartz materials. Ideal for investment casting applications.

Packaging & Shipping

Our Fused Silica is packaged in 25kg plastic woven bags and placed on pallets for delivery, ensuring safe transportation.

Explore our gallery showcasing the production process and quality control of our Ultra-Fine Investment Casting Silica Flour for Foundries at Lianyungang Chemsize International Trading Co., Ltd.

Fused Silica Product Description

Fused Silica Product Description

Fused Silica is a high purity crystal silica product made through an electric fusion process in China Donghai-Xinyi. It is engineered into various forms such as lumps, cullet, ingots, sand, grain, granular, and powder flour for applications like PV fused silica crucible, thermal ceramic, refractory, EMC investment casting ceramic shell, and more.

Specifications:

• Must not contain any unfused parts


• No foreign materials allowed


• Only conditional black dots permitted


• Black spot diameter should not exceed 2mm


• Total black dots quantity limited to 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 by ***/FEDEX/DHL. Mixed samples are acceptable.

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

A: Samples are sent within 3-5 days. Bulk orders are typically delivered 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 delivery time?

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

Q5: What is the order process for fused silica powder products?

A: Provide requirements, receive a quote, confirm samples, pay deposit, and we arrange production.

Q6: Can my logo be printed on the packages?

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

Q7: How are faulty products handled?

A: Products have a low defective rate. If issues arise, we will send replacements and cover losses.

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