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Product Description
Alumina Hollow Spheres produced by Kaifeng Gaoda Refractories Co., Ltd. are hollow spherical thermal insulation materials made through fused process. It is characterized by light weight, closed pores and excellent high temperature resistance. This product possesses excellent properties including high purity, pure white color, thin ball wall, high strength, low bulk density and low breakage rate. It serves as an ideal thermal insulating filler for high-temperature kilns, and also an excellent refractory material with high temperature resistance, thermal insulation and energy-saving performance.
Particle size: 0.2–0.5 mm, 0.5–1 mm, 1–3 mm, 3–5 mm
Product Name/Properties | Alumina hollow spheres | |
Chemical composition (%) | Al 2 O 3 | ≥99 |
SiO 2 | ≤0.8 | |
Fe 2 O 3 | ≤0.1 | |
Na 2 O | ≤0.2 | |
Bulk density (g/cm³) | 0.4-1.0 | |
Refractoriness (°C) | 1800 | |
Breakage rate (%) | ≤12 | |
Particle size (mm) | 0.2-0.5, 0.5-1, 1-3, 3-5 | |
Keywords:
Alumina Hollow Spheres
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Refractory Raw Materials Series
Why Choose Us
A full range of products
We supply a full series of refractory raw materials including Activated α-alumina Micropowder,Fused Calcium Aluminate Cement,Fused Alumina-Magnesia Spinel, as well as various unshaped refractories such as ladle castables and gunning mixes.
Wide range of product applications
Our products are widely applied in refractories, metallurgy, ceramics, chemical engineering and other sectors due to their stable performance and reliable quality.
Sold in multiple regions
Our products sell well in more than twenty provinces and municipalities nationwide, featuring premium raw materials, scientific formulations, precise manufacturing, stable performance and on-time delivery; we also export to many overseas countries.
Continuous Innovation
Quality is the core foundation of our company. We keep upgrading our products and technologies, committed to delivering reliable products and thoughtful services to all clients.
Kaifeng Gaoda Refractories Co., Ltd
Gaoda Refractories, specializing in refractory raw materials and unshaped refractories.
Our main products are Reactive αAl₂O₃ Micropowder, Fused Calcium Aluminate Cement, Fused AluminaMagnesia Spinel, Fused Mullite, White Fused Alumina, Alumina Hollow Spheres and other refractory raw materials, as well as monolithic refractories including castables for ladles, castables for iron runners and gunning mixes. Thanks to their excellent performance and high quality, products are widely applied in refractory materials, metallurgy, ceramics, chemical and other industries.
Honors
FAQ
Q
What is the regular packaging for products?
A
Regular packaging is available in 1-ton jumbo bags or 25kg small bags. Customized packaging and LOGO printing are supported.
Q
How to select reactive alumina micropowder?
A
Our reactive alumina micropowder is available in three grades including GD370, Type A, Type B as classified by varying fineness degree. Grades can be selected according to usage requirement.
Q
What are the differences among different grades of fused calcium aluminate cement?
A
Cement grades are classified by alumina content and are AL-71, AL-75, AL-80, AL-85 and AL-90. Appropriate grades can be selected according to operating conditions.
Q
Besides reactive alumina micropowder and fused calcium aluminate cement, what other refractory products are available? Can technical support be provided?
A
We also supply full-series refractory raw materials including fused alumina-magnesia spinel, white fused alumina, alumina hollow spheres, and mullite, as well as various monolithic refractories such as ladle castables, castables for iron runners and gunning mix. Grade suggestions, indicator adjustments and supporting technical schemes can be offered according to your operating conditions.
Q
Can products be customized according to indicators?
A
All full-series refractory raw materials of our company can be customized by adjusting indicators in response to clients' actual operating conditions.
Q
Can samples be provided?
A
Yes
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