3-1mm Grain Size Calcined Flint Clay Calcined Kaolin 45% For Precision Casting Sand

1. Calcined Flint Clay Introduction

Calcined kaolin flint clay clinker is a mixture of various aluminosilicates. The main chemical composition is Al2O3 and SiO2 two oxides, impurities are mainly alkali, alkaline earth and iron, titanium and other oxides, and some organic matter. These oxides play the role of help melting, will reduce the refractoriness of raw materials. Therefore, the lower content of impurity in calcined kaolin flint clay clinker, especially the lower Na2O + K2O, the higher the refractoriness. And the ratio of Al2O3 / SiO2 is closer to the theoretical value (A / S = 0.85), then the higher purity of calcined kaolin flint clay clinker. Larger A / S, higher the refractoriness, and wider the sintering melting range. High quality calcined kaolin flint clay clinker refractoriness can up to 1750 ℃ or more.

2. Calcined Flint Clay Specifications

3. Calcined Flint Clay General advantages

• High refractoriness.
• Stable physical characteristics.
• High bulk density.
• Low porosity.
• Low water absorption.
• Completely calcined evenly.
• Low impurity contents.

4. Calcined Flint Clay Characteristics

• High refractoriness.
• Physicochemical stability.
• Bulk density high.
• Low porosity.
• Low water absorption.
• Fully calcined
• Low impurity content.
• Pure white.

5. Calcined Flint Clay Particle sizes Available

• Size of sand: 8-16,16-30,30-60,30-80,60-80,80-120 (mesh):Used for investment casting.
• Size of powder: -200mesh,-270mesh,-325mesh: Used for investment casting and refractories.
• Size of particle: 0-1mm,1-3mm,3-5mm,5-8mm,8-15mm,0-5mm,0-50mm:Used for refractories.