Alumina Balls

Short Description:

Model: Alumina Balls/Wear-resistant Ceramics/Composite Pipe/Composite Ceramic Lining
Materials: Alumina Ceramic
Theoretical Density: 3.45-3.92g/cm3
Bending Strength: 300-390Mpa
Purity: 92%-99.7%
Compressive Strength: 2800-3900Mpa
Elastic Modulus: 350-390Gpa
Weibull Coefficient: 10-12m
Thermal Conductivity: 18-30(W/mk)
Thermal Shock Stability: 220-280
Dielectric Strength: 20-30(kv/mm)
Sample: Available

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Product Information

Alumina ceramic, also known as aluminum oxide or Al2O3, is an oxide ceramic widely used in industry. Alumina ceramic materials are known for their extremely high hardness and high thermal conductivity. The properties of alumina ceramics make it one of the most widely used ceramics in structural, wear and corrosive environments.

Aluminum oxide is characterized by high hardness, corrosion resistance, thermal stability, good dielectric properties (for conversion from DC to GHz frequencies), low loss tangent and stiffness.

Alumina ceramics are divided according to the Al2O3 content in the material. Common ones are: 75%, 95%, 99%, 99.5%, 99.7% alumina ceramics, etc. Usually, we choose the purity of alumina ceramics based on the performance requirements of the products we make.

Product Categories

1. Alumina Ball

Alumina balls are non-spherical aluminum oxide particles that are widely used in the petrochemical, agricultural and coatings industries.

Alumina balls can directly enter the reaction, greatly reducing the impact on the catalyst, thereby extending the service life of the catalyst. In addition, alumina balls can also be used to make surface protective coatings. After spraying on metal, plastic and other surfaces, it can improve surface hardness, corrosion resistance, wear resistance and flame retardancy.

In the electronics industry, spherical alumina balls are of great significance in the field of electronic packaging because of their excellent electrical, thermal and mechanical properties.

Particle size range: 0.3-0.4, 0.4-0.6, 0.6-0.8, 0.8-1.0, 1.0-1.2, 1.2-1.4, 1.4-1.6, 1.8-2.0, 2.0-2.2, 2.2-2.4, 2.8-3.0, 3.0-3.2, 3.2-3.5, 4.5-5.0, 5.0-5.5, 6.0-6.5, 6.5-7.0, 8, 10, 12, 15, 20.

Alumina Grinding Balls

Alumina grinding balls are spherical particles made of high-purity alumina and are commonly used as abrasives or grinding media. Due to its high hardness and good wear resistance, it is also widely used in industries with high requirements for grinding and wear resistance.

Alumina Ceramic Balls

Alumina ceramic balls are a multifunctional ceramic material made of alumina. They have various excellent physical and chemical properties, such as high hardness, wear resistance, corrosion resistance and electrical insulation properties.

They are usually widely used in grinding, polishing, metallurgy, ceramic product production and other fields.

2. 92%, 95% alumina wear-resistant ceramics(conventional, special-shaped, customized products)

Features: high hardness, low wear, corrosion resistance, impact resistance, smooth surface, easy to install. Widely used in steel, chemical industry, power plants, coal and other mining equipment. Extend the service life of equipment and reduce the frequency of equipment maintenance.

3. Composite Pipe

Features: wear-resistant, corrosion-resistant, integrated design, flat and smooth inner wall to facilitate the passage of materials, no sticking or clogging. Widely used in thermal power, steel, smelting, machinery, coal, mining, chemical industry, cement, quartz, lithium battery conveying systems, pulverizing systems, ash discharge systems, dust removal systems, etc. Different types of products can be selected according to different needs.

4. Composite Ceramic Lining

Features: Ceramics have the characteristics of high strength, wear resistance, corrosion resistance, and smooth outer wall, but ceramics are relatively brittle. Rubber has good impact resistance and is combined with ceramic to form a strong wear-resistant layer, which can buffer the impact during the transportation of larger materials and better protect equipment. Used in anti-wear of troughs, hoppers and other equipment.

Product Index

Item	Al2O3 ＞92%	＞95%	＞99%	＞99.5%	＞99.7%
Color	White	White	White	Cream Color	Cream Color
Theoretical Density(g/cm3)	3.45	3.50	3.75	3.90	3.92
Bending Strength(Mpa)	340	300	330	390	390
Compressive Strength(Mpa)	3600	3400	2800	3900	3900
Elastic Modulus(Gpa)	350	350	370	390	390
Impact Resistance(Mpam1/2)	4.2	4	4.4	5.2	5.5
Weibull Coefficient(m)	11	10	10	12	12
Vickers Hardness(HV 0.5)	1700	1800	1800	2000	2000
Thermal Expansion Coefficient	5.0-8.3	5.0-8.3	5.1-8.3	5.5-8.4	5.5-8.5
Thermal Conductivity(W/mk)	18	24	25	28	30
Thermal Shock Stability	220	250	250	280	280
Maximum Operating Temperature℃	1500	1600	1600	1700	1700
20℃ Volume Resistance	＞10^14	＞10^14	＞10^14	＞10^15	＞10^15
Dielectric Strength(kv/mm)	20	20	20	30	30
Dielectric Constant	10	10	10	10	10

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Company Profile

Shandong Robert New Material Co., Ltd. is located in Zibo City, Shandong Province, China, which is a refractory material production base. We are a modern enterprise that integrates the research and development, production, sales, kiln design and construction, technology, and export refractory materials. We have complete equipment, advanced technology, strong technical strength, excellent product quality, and good reputation. Our factory covers over 200 acres and an annual output of shaped refractory materials is approximately 30000 tons and unshaped refractory materials is 12000 tons.

Our main products of refractory materials include: alkaline refractory materials; aluminum silicon refractory materials; unshaped refractory materials; insulation thermal refractory materials; special refractory materials; functional refractory materials for continuous casting systems.

Robert`s products are widely used in high-temperature kilns such as non-ferrous metals, steel, building materials and construction, chemical, electric power, waste incineration, and hazardous waste treatment. They are also used in steel and iron systems such as ladles, EAF, blast furnaces, converters, coke ovens, hot blast furnaces; non-ferrous metallurgical kilns such as reverberators, reduction furnaces, blast furnaces, and rotary kilns; building materials industrial kilns such as glass kilns, cement kilns, and ceramic kilns; other kilns such as boilers, waste incinerators, roasting furnace, which have achieved good results in using. Our products are exported to Southeast Asia, Central Asia, Middle East, Africa, Europe, Americas and other countries, and has established a good cooperation foundation with multiple well-known steel enterprises. All employees of Robert sincerely look forward to working with you for a win-win situation.

Frequently Asked Questions

Need help? Be sure to visit our support forums for answers to your questions!

Are you a manufacturer or a trader?

We are a real manufacturer, our factory is specialized in producing refractory materials for more than 30 years. We promise to provide the best price, the best pre-sale and after-sale service.

How do you control your quality?

For each production process, RBT has a complete QC system for chemical composition and physical properties. And we will test the goods, and the quality certificate will be shipped with the goods. If you have special requirements, we will try our best to accommodate them.

What is your delivery time?

Depending on the quantity, our delivery time is different. But we promise to ship as soon as possible with guaranteed quality.

Do you provide free samples?

Of course, we provide free samples.

Can we visit your company?

Yes, of course, you are welcome to visit RBT company and our products.

What is the MOQ for trial order?

There is no limit, we can provide the best suggestion and solution according to your situation.

Why choose us?

We have been making refractory materials for more than 30 years, we have strong technical support and rich experience, we can help customers design different kilns and provide one-stop service.

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92 Alumina Ball