Your Professional Calcined Alumina Supplier
Our goal is to be your reliable partner for calcined alumina in China. Zibo Yuanyu New Materials Co.,Ltd manufacture and supply aluminum series product. We have a skilled engineering team dedicated to refining every stage, from product development and process improvement to production oversight, ensuring every product delivered meets rigorous quality and performance standards. The price is competitive and the product is quality-assured, which is a good choice for your long-term cooperation.
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![Calcined Alumina for Polishing Grade]()
Calcined Alumina for Polishing GradeThe main component of Calcined Alumina for Polishing Grade is α-Al₂O₃, which is obtained by high-temperature calcination of γ-Al₂O₃,Polishing-grade calcined alumina is a high-performance material -
![Refractory Grade Calcined Alumina]()
Refractory Grade Calcined AluminaChemical Formula: AI2O3. CAS No.: 1344-28- 1. Refractory grade calcined alumina is a product of alumina (Al₂O₃) that has undergone high-temperature calcination treatment. It is usually white or
Why Choose Us
Our production capacity:
Our company has built and operated four state-of-the-art fast-deoxidation alumina production lines, with an annual production capacity exceeding 30,000 tons.
Our factory:
Our factory covers an area of 30,000 square meters, with over 10,000 square meters of production space and a 5,000 square meter research and development building.
Quality control:
Our company has a comprehensive production process and is ISO9001 certified, ensuring that our products meet quality standards.
Our services:
Our team of experts will recommend the most suitable products according to customer needs and provide detailed consultation, we ensure timely delivery, and we provide long-term service support.
Maintain its size and shape over time: One of the key advantages of calcined alumina is its ability to maintain its size and shape over time, ensuring that it delivers consistent performance throughout the grinding process. This is thanks to its highly uniform particle size distribution and low impurity levels, which help to minimize surface defects and enhance product quality.
Wide range of applications: Calcined alumina can be used in a wide range of applications, including surface finishing of metals, ceramics, and glasses, as well as precision machining of hard and brittle materials. Its versatility and exceptional performance have made it a top choice for manufacturers looking to improve product quality and increase efficiency.
Specification of Calcined Alumina
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Chemical components |
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|
Model |
α-Al₂O₃ %≥ |
Al2O3(%)≥ |
SiO2(%)≦ |
Fe2O3(%)≦ |
Na2O(%)≦ |
L.O.I(%)≦ |
Primary crystal size(D50) |
Median particle diameter(D50) µm |
Surface area(m2/g) |
|
Y-DS-6µm |
97.8 |
99.9 |
0.019 |
0.01 |
0.03 |
0.05 |
4-5 |
6-7 |
3-4 |
|
Y-DS-8µm |
97.8 |
99.9 |
0.019 |
0.01 |
0.03 |
0.05 |
8-9 |
3-4 |
|
|
Y-DS-50µm |
97.8 |
99.9 |
0.019 |
0.01 |
0.04 |
0.05 |
50 |
2 |
|
|
Y-DS-70µm |
97.8 |
99.9 |
0.019 |
0.01 |
0.04 |
0.05 |
70 |
2 |
|
|
Particle size could be adjusted according to customer requirements |
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Features of Calcined Alumina
High melting point:
The melting point is over 2050℃, capable of withstanding high-temperature environments. It is not prone to melting at high temperatures and can effectively resist various high-temperature industrial kilns and ovens.
01
High mechanical strength:
It has good compressive strength and flexural strength, capable of withstanding the pressure from the materials inside the kiln and mechanical impacts. It is not easily damaged by external forces.
02
Strong chemical stability:
It has good resistance to erosion by acids and alkalis. At high temperatures, it is not prone to chemical reactions with other substances and can be used for smelting different types of metals and resist erosion by slag, etc.
03
Good thermal shock stability:
After special processing, it has the ability to resist cracking due to sudden temperature changes and can adapt to frequent opening and closing of kilns in industrial production.
04
Uniform particle size:
The particle sizes are relatively consistent, with a narrow distribution range. This enables uniform dispersion in refractory materials, ensuring the consistency of material performance and facilitating the improvement of the overall quality of refractory materials.
05
In the field of ceramic industry, structural ceramics: Calcined alumina, with its high hardness,excellent wear resistance and corrosion resistance, is widely used in the manufacture of structural ceramic components, such as ceramic bearings, ceramic seals, ceramic cutting tools, etc.
Electronic ceramics:
In the electronics industry, calcined alumina is an important raw material for making electronic ceramics. For instance, it is used in the production of integrated circuit substrates, electron tube casings, high-frequency insulating porcelain, etc.
Insulating materials:
Calcined alumina can be made into various insulating parts, such as insulators and insulating sleeves, which are used in high-voltage electrical equipment to play the roles of insulation and support.
Thermal conductive materials:
In some electronic devices, good thermal conductivity is required for heat dissipation. Refractory grade calcined alumina can be added as a thermal conductive filler to materials such as thermal conductive silicone and thermal conductive plastics to enhance their thermal conductivity.
Crushing and grinding: The bauxite ore is first crushed and ground into a fine powder.
Digestion: The powdered bauxite is mixed with a strong alkali, usually sodium hydroxide, and heated under pressure. This dissolves the aluminum hydroxides in the ore.
Clarification: The liquid containing dissolved alumina is separated from the insoluble residues.
Precipitation: Aluminum hydroxide is precipitated from the solution by cooling and seeding with fine alumina particles.
Calcination: The precipitated aluminum hydroxide is heated to high temperatures (usually above 1100°C) to remove water and other volatile substances, leaving behind pure alumina.
Packing and Shipping of Calcined Alumina
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Packing |
Bags |
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Shipping |
Shipped by road, sea, rail |
FAQ
As one of the leading calcined alumina manufacturers and suppliers in China, we warmly welcome you to buy calcined alumina in stock here and get quotation from our factory. Good service and quality products are available.
calcined alumina, Calcined Alumina for Polishing Grade, Refractory Grade Calcined Alumina
