mullite sand chamotte sand as refractory material for investment precision casting
Production Description
Mullite sand, a aluminate-silicate refractory, is commonly used in precision casting. Refractoriness is around 1750 degrees.
The higher the aluminum content in Molai sand, the lower the iron content.
The smaller the dust, the better the quality of Molai sand products.
Mullite sand is produced by sintering kaolin at high temperature.
Chemical Specification
Item | Al2O3 | Fe2O3 ≤
| SiO2 | K2O+Na2O ≤
| CaO+Mg2O ≤
| Ti02 | Bulk density g/cm3(min)≥ | Refractoriness °C (min)≥ | LOI % ≥
| |
A Grade | 46-47 | 1.0 | 51-53 | 0.2 | 0.6 | 0.08 | 2.6 | 1750 | 0.3 | |
Mesh Size | Sand---(4-8,8-16,16-30,30-60,60-80,80-140) | Powder---(0-140,0-150,0-200,0-280,0-300) | ||||||||
Dust-containing Amount ≤ | 4-8mesh---0.1; 8-16mesh---0.1 16-30mesh---0.5; 30-60mesh---0.7
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♦ Used in precision casting.
♦ Refractories and optical glass manufacturing.
♦ Why choose FSK?
Cost-effective, fast development efficiency, professional operation with integrity.
Product quality assurance, delivery guarantee, good after-sales service.
♦ When can I get the quotation?
We usually quote within 24 hours after we get your inquiry. If you are very urgent to get the price, please call us or tell me by email so that we will reply to you in time.
♦ How can I get samples to check the quality?
After price confirmation, you can require samples to check the quality of our product. We could send you samples for free while you bear the freight cost.
♦ Can you do the special packing for us?
Yes, we could pack our product according to the requirement of our customers.
♦ How long is your delivery time?
We usually deliver the goods within 10 days after the payment.
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