Spherical Ceramic Sand for Foundry

Short Description:

Foundry Ceramic Sand, technically named as “Sintered Ceramic Sand for Foundry”, also named as ceramsite, cerabeads, ceramcast, is good artificial spherical grain shape which is made from calcined bauxite . Its main content is aluminum oxide and Silicon oxide. Ceramic sand, has much better properties than that of silica sand to gain a better performance in foundry. It has high refractoriness, little thermal expansion, good angular coefficient, excellent flowability, High resistance to wear, crush and thermal shock, high reclamation rate.


Product Detail

Product Tags

Ceramic Sand Property

Main Chemical Component Al₂O₃≥53%, Fe₂O₃<4%, TiO₂<3%, SiO₂≤37%
Grain Shape Spherical
Angular Coefficient ≤1.1
Partical Size 45μm -2000μm
Refractoriness ≥1800℃
Bulk Density 1.5-1.6 g/cm3
Thermal Expansion(RT-1200℃) 4.5-6.5x10-6/k
Color Sand
PH 6.6-7.3
Mineralogical Composition Mullite + Corundum
Acid Cost <1 ml/50g
L.O.I. <0.1%
Spherical Ceramic Sand for Foundry (1)
Spherical Ceramic Sand for Foundry (3)
Spherical Ceramic Sand for Foundry (2)
Spherical Ceramic Sand for Foundry (4)

Advantage

● Green Sand. SAFE to environment compared with silica (silicosis) and zircon sand
● High refractoriness (>1800°C),can be used for casting various materials. There is also no need to use different sand type according to material.
● High reclamation rate. Both Thermal and mechanical reclamation. Offers longer work life and reduction of sand usage.
● High collapsibility. Sintered Ceramic sand spherical shape compared with angular shaped grains allows for easier separation from cast parts and improved collapsibility resulting in lower scrap and casting efficiency.
● Excellent fluidity and filling efficiency owing to being spherical.
● Lower Thermal expansion and Thermal Conductivity. Casting dimensions are more accurate and lower conductivity provides better mold performance.
● Lower bulk density. As artificial ceramic sand is about half as light as fused ceramic sand(black ball sand), zircon and chromite, it can turn out about twice the number of molds per unit weight. It can also be handled very easily, saving labor and transfer power costs. However, attention should be given to the amount of binder addition.
● Requires 40-50% less resin.
● Castings are coated with little or no coating.
● Can be used as a single sand.
● Stable supply. Annual capacity 200,000 MT to keep the fast and stable supply.

Application

As a neutral material, KAIST ceramic sand is applicable to acid and alkali resins.

It can be widely used for cast iron, cast steel and nonferrous metals casting, such as lost foam casting, coated sand, resin sand, cold core box, precision casting, and 3D printing.

Parts of Particle size Distribution

The particle size distribution can be customized according your requirement.

Mesh

20 30 40 50 70 100 140 200 270 Pan AFS

μm

850 600 425 300 212 150 106 75 53 Pan  
Code 20/40 15-40 30-55 15-35 ≤5             20±5
30/50 ≤1 25-35 35-50 15-25 ≤10 ≤1         30±5
40/70   ≤5 20-30 40-50 15-25 ≤8 ≤1       43±3
70/40   ≤5 15-25 40-50 20-30 ≤10 ≤2       46±3
50/100     ≤5 25-35 35-50 15-25 ≤6 ≤1     50±3
100/50     ≤5 15-25 35-50 25-35 ≤10 ≤1     55±3
70/140       ≤5 25-35 35-50 8-15 ≤5 ≤1   65±4
140/70       ≤5 15-35 35-50 20-25 ≤8 ≤2   70±5
100/200         ≤10 20-35 35-50 15-20 ≤10 ≤2 110±5

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