Investment Casting Refractory Ramming Mass with Low Thermal Expansion Rate

• 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

Lianyungang Chemsize International Trading Co., Ltd. offers high-quality Investment Casting Refractory Ramming Mass with Low Thermal Expansion Rate. Our fused silica material ensures superior performance and durability for various applications.

Product Description

Grade A Fused Silica sand & powder for Investment Casting Refractory Ramming Mass with Low Thermal Expansion Rate. Ideal for high-temperature 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%

Discover our Investment Casting Refractory Ramming Mass with a Low Thermal Expansion Rate, perfect for various applications. Made with high purity fused silica, this ramming material offers exceptional thermal shock resistance and a very low coefficient of thermal expansion.

		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 Feature:

Fused Silica features an extremely low coefficient of thermal expansion, consistent chemistry, and carefully controlled particle size distribution.

Applications:

Fused Silica is 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 as per the customer's special requirement.

For more information, contact Lianyungang Chemsize International Trading Co., Ltd.

Third Party Test Report

Production Process

Product Description:

Lianyungang Chemsize International Trading Co., Ltd. specializes in the production of fused silica, a high-purity quartz sand that is melted to form glass. Fused silica offers high volume stability, low volumetric expansion, and exceptional purity, making it ideal for various refractory applications, including aluminum launders.

Our raw material is carefully selected high-purity silica sand (SiO2>99%) sourced from Donghai/Xinyi. Through a meticulous process of melting the silica sand at high temperatures (2000-2300 ºC) and subsequent cooling, we produce amorphous silicon dioxide glassy ingots. These ingots are further processed into fused silica lumps, sand, and powder to meet the specific requirements of our customers.

Detailed Photos

Discover our Investment Casting Refractory Ramming Mass with Low Thermal Expansion Rate, ideal for high purity applications. Made from Fused Silica, it offers exceptional thermal shock resistance.

Packaging & Shipping

Fused Silica Package and Delivery: 25kg Net Plastic Woven Bags on Pallets. Supplier: Lianyungang Chemsize International Trading Co., Ltd.

Fused Silica Refractory Ramming Mass

Our Investment Casting Grade Ramming Mass offers low thermal expansion, high purity, and exceptional thermal shock resistance. Ideal for induction furnace linings and ceramic welding repairs.

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 resulting material is engineered into various forms such as lumps, cullet, ingots, sand, grain, granular, and powder flour. These forms are ideal 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 like string, plastic line, carbon, wood, metal, or other contaminants


• Only conditional black dots are allowed, no other color dots


• Black spot diameter should not exceed 2mm


• Total black dots quantity should be less than 10 per square meter

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 has a fusion ratio of up to 99.9% Amorphous SiO2, low iron content (30ppm max), and minimal impurities, resulting in low thermal expansion, high thermal shock resistance, and low electrical conductivity.

Our unique electric-arc fusion technique ensures the purity of our Fused Silica, exceeding 99.9% SiO2. It has a low thermal expansion coefficient, excellent chemical stability, and ISO-certified standards. Chemsize Fused Silica is ideal for foundry, refractory, investment casting, and other specialized applications.

Key Features:

• Low thermal expansion coefficient


• Consistent chemistry


• Controlled particle size distribution


• Extremely insulative with low thermal conductivity


• Excellent thermal shock resistance

Applications:

• Solar cell crucibles in the photo-voltaic industry


• Rollers, castables, mortars in the glass industry


• Technical ceramics in the thermal resistance industry


• Ceramic slurry in investment casting

Our standard packaging includes 25kg bags, 48 bags per pallet, or jumbo bags with a net weight of 1200kgs. We offer tailored shipments for bulk bag preferences.

Choose Chemsize Fused Silica for superior performance in your industry applications!

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. Our Fused Silica flour offers numerous advantages over traditional Zircon Flour:

• Better particle shape for improved primary slurry quality


• Reduced material consumption due to lower density


• Increased permeability and porosity for better shell quality


• Easier knock-out and shell removal process


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


• Competitive pricing at US$0.56/kg FOB LIANYUNGANG PORT

Application Areas:

Our Fused Silica is ideal for use in induction furnace lining ramming material, offering high purity and efficient performance in various applications.

FAQ:

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

A: Yes, we provide samples free of charge 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 goods shipped and what is the expected delivery time?

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

For more information, contact Lianyungang Chemsize International Trading Co., Ltd.