Trial Order Available Fused Silica Sand 80 120 Mesh Low Gas Generation for Casting

• Customization: Available
• Feature: Good Acid Resistance, Good Mechanical Strength, High Refractoriness, Low Thermal Conductivity, Permeability, Thermal Shock Resistance, Volume Stability
• Production Process: High Temperature Melting Sintering
• Model NO.: 80-120 mesh/300 Mesh
• Refractoriness (℃): 1600℃-1750℃
• Shape: Powder
• Low Thermal Expansion Coefficient: Ultra-Low Linear Expansion, Anti-Cracking Under Ra
• Alkali Resistance: Weak Alkali Resistance, Avoid Long-Term Contact Wi
• Softening Point: Softening Temperature at 1730℃, Melting Point 1713
• Bulk Density: Granule Bulk Density 1.7 2.3 G/Cm³; Dense Block Bu
• Chemical Stability: Insoluble in All Common Acids, Slight Reaction Wit
• Transport Package: Wooden Pallet + Waterproof Plastic Film / Woven Ba
• Specification: SiO2 ≥99.9%, Particle size: 0-1mm/1-3mm/200mesh/32
• Trademark: OEM / Customized
• Origin: China
• Production Capacity: 10000tons/Month
• Package Size: 50.00cm * 50.00cm * 50.00cm
• Package Gross Weight: 1000.000kg

Product Description

Product Description

Fused Silica

Fused silica, also known as fused quartz, is manufactured by melting high-purity natural quartz sand at ultra-high temperature above 1700℃, followed by crushing, grinding and grading to form granular or powdery refractory raw materials. 

Our fused silica products feature ultra-high SiO2 purity, extremely low linear thermal expansion, outstanding thermal shock resistance and superior acid resistance, which make it a core refractory raw material widely used in precision investment casting, high-temperature industrial kilns, glass production, photovoltaic industry and advanced ceramic manufacturing.
 
Unlike ordinary silica sand, fused silica eliminates the crystal phase transformation of quartz during heating, avoiding volume expansion, cracking and spalling under frequent cold-hot cycles. It maintains stable physical and chemical properties under long-term high-temperature service, becoming the preferred material for high-end heat-resistant components.

Ultra-Low Thermal Expansion Coefficient 
Linear expansion coefficient is only 0.55×10/℃ (20~1000℃), far lower than alumina refractory materials. It will not crack under drastic temperature rise and drop, with excellent thermal cycle stability.

Excellent Thermal Shock Resistance Withstand repeated rapid heating and cooling without peeling or cracking, ideal for frequent temperature fluctuation working conditions such as casting shell molds and industrial furnace linings.

Item	Standard Value
SiO2	≥99.90%
Fe2O3	≤0.01%
Al2O3	≤0.03%
Na2O + K2O	≤0.005%
CaO + MgO	≤0.008%
Total Impurities	≤0.10%