High Alumina Powder

High alumina fine powder is a refractory material mainly made of bauxite and calcined at high temperature. Its main component is alumina, which usually contains a certain proportion of impurities such as iron oxide and titanium dioxide, and is widely used in the production of refractory materials.

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Product Feature

(1) High mechanical strength

(2) Good resistance to wear, strong compression and bending resistance

(3) Excellent chemical stability and good corrosion resistance

(4) Good thermal stability and superior high temperature resistance

(5) Low thermal conductivity, minimal heat loss, and high energy utilization efficiency

(6) Good durability and long service life

Product Application

(1) Refractory products: can be used to prepare refractory bricks, castables, lightweight refractory materials, bonded clay bricks, etc.

(2) Steel industry: the inner walls, insulation layers, furnace throats, kiln doors, feeding ports, exhaust ports, etc. of smelting equipment such as steel furnaces, converters, and electric arc furnaces.

(3) Metallurgical industry: Bauxite is used to manufacture high-temperature furnace linings, furnace liners, and casting sand.

(4) Chemical industry: lining of high-temperature reactors, catalyst carriers, and lining of various corrosion-resistant equipment.

Product Property

Type		Compressive Strength(MPa）				Bending Strength（MPa）
		6h	1d	3d	28d	6h	1d	3d	28d
CA50	Ⅰ	≥20a	≥40	≥50	-	≥3a	≥5.5	≥6.5	-
	Ⅱ		≥50	≥60	-		≥6.5	≥7.5	-
	Ⅲ‌		≥60	≥70	-		≥7.5	≥8.5	-
	Ⅳ‌		≥70	≥80	-		≥8.5	≥9.5	-
CA60	Ⅰ	-	≥65	≥85	-	-	≥7.0	≥100	-
	Ⅱ	-	≥20	≥45	≥85	-	≥2.5	≥5.0	≥10.0
CA70		-	≥30	≥40	-	-	≥5.0	≥6.0	-
CA80		-	≥25	≥30	-	-	≥4.0	≥5.0	-

What Types of High Alumina Powders Are There?

Highland Refractory classifies High Alumina Powder primarily based on alumina (Al₂O₃) content to cater to diverse industrial needs, including Low-Grade High Alumina Powder (Al₂O₃: 55-70%, suitable for general refractory bonding and low-temperature ceramic additives), Medium-Grade High Alumina Powder (Al₂O₃: 70-85%, ideal for high-alumina refractory castables and advanced ceramic raw materials), and High-Grade High Alumina Powder (Al₂O₃: ≥85%, designed for ultra-high-temperature applications like kiln linings and precision electronic ceramics); additionally, it can be categorized by particle size (e.g., 100-mesh, 325-mesh, 1000-mesh) to match different mixing and molding requirements, ensuring each type of High Alumina Powder aligns with specific production processes.

Advantages of High Alumina Powders

Highland’s High Alumina Powder stands out in industrial applications with core strengths: it has high alumina content, which significantly enhances the thermal stability and mechanical strength of end products (such as refractory bricks or ceramics), allowing them to withstand extreme temperatures without deformation; it features uniform particle size distribution, enabling smooth blending with other raw materials and reducing defects in finished goods; it also has low impurity levels (e.g., low SiO₂ and Fe₂O₃), preventing unwanted chemical reactions in high-temperature environments and ensuring consistent performance—these advantages make High Alumina Powder a reliable raw material for upgrading the quality of high-temperature-resistant products.

Applications of High Alumina Powders in Different Industries

High Alumina Powder is widely used across sectors that demand high-temperature resistance and material stability: in the refractory industry, it serves as a key component in high-alumina refractory bricks, castables, and ramming mixes, boosting the refractory’s ability to endure furnace heat; in the ceramic industry, it is added to ceramic bodies and glazes to improve hardness, thermal shock resistance, and corrosion resistance, suitable for making high-performance ceramic parts; in the metallurgical industry, it acts as a flux in steelmaking to remove impurities and protect ladle linings; in the electronics industry, high-grade High Alumina Powder is processed into insulating ceramics for electronic components—each application leverages the powder’s unique properties to meet industry-specific demands.

Difference Between High Alumina Powders and Clay Powders

High Alumina Powder (Highland) excels in high-temperature performance and structural strength, with high alumina content enabling it to withstand ultra-high temperatures (up to 1700℃ or higher) and enhance the durability of end products, making it ideal for high-temperature industrial scenarios like refractory manufacturing and advanced ceramics; Clay Powder, by contrast, is valued for its excellent plasticity and cost-effectiveness—its rich clay minerals (e.g., kaolinite) allow it to be easily shaped into various forms when mixed with water, and it is more affordable, suiting traditional ceramics, construction materials, and low-temperature binding applications; each powder targets distinct needs, with High Alumina Powder dominating high-temperature and high-strength requirements while Clay Powder leads in moldability and cost-sensitive projects.

Highland Refractory: Your Best High Alumina Powder Manufacturer

Highland Refractory is a trusted producer of high-quality High Alumina Powder, backed by 30+ years of refractory expertise—we source high-purity bauxite ore, adopt advanced crushing, grinding, and purification technologies to control alumina content and particle size, and implement strict quality testing (measuring alumina concentration, particle distribution, and impurity levels for every batch), ensuring each High Alumina Powder meets global industrial standards; we also hold ISO 9001/CE certifications, maintain an annual production capacity of 60,000 tons (covering various refractory materials including High Alumina Powder), and serve 1,500+ clients across Asia, Africa, Europe, and Australia, making us a reliable partner for all High Alumina Powder needs.

Choose Highland Refractory as Your High Alumina Powder Manufacturer

Choosing Highland Refractory for your High Alumina Powder requirements means accessing tailored solutions and comprehensive support: we offer customization (adjusting alumina content and particle size of High Alumina Powder to match your production process, such as 325-mesh powder for refractory castables or 1000-mesh powder for fine ceramics), fast delivery (3–7 days for standard grades in stock, 10–15 days for customized grades), and bulk discounts (5–10% off orders ≥ 10 tons); we also provide free samples, detailed quality inspection reports, and 24/7 technical guidance on powder application—our commitment ensures your High Alumina Powder integrates seamlessly into your production, enhancing the performance and competitiveness of your end products.

01.高铝粉

Q: Do you have free samples of High Alumina Powder?

A: Of course. We can provide a few free samples of High Alumina Powder. You only need to pay for the shipping cost to your address. Can you give me your shipping address?

Q: What is the price of High Alumina Powder?

A: For High Alumina Powder, we offer you the factory price (EXW price) as well as the cost required for transportation to your country. Different grades and particle - sized High Alumina Powder have different prices. Please tell me the specific requirements like the alumina content and particle size you need.

Q: How long does it take to receive High Alumina Powder after placing an order?

A: If we have the standard High Alumina Powder in stock, it usually takes 3 - 7 days for delivery. If you order customized High Alumina Powder with specific alumina content or particle size, it will take about 10 - 15 days as we may need extra time for production and quality checks.

Q: What's the packaging of High Alumina Powder like?

A: High Alumina Powder is first sealed in high - quality moisture - proof plastic bags to prevent moisture absorption. Then these bags are placed inside sturdy cardboard drums or steel drums depending on the quantity. The drums are clearly labeled with product details and handling instructions such as "Keep Dry" and "Handle with Care".

Q: Do you provide a quality inspection report for High Alumina Powder?

A: Yes, we do. Every batch of High Alumina Powder produced by us undergoes strict quality control. Let me send you the detailed quality inspection report which includes information about the alumina content, particle size distribution, and impurity levels.

Q: What are the payment methods for High Alumina Powder?

A: We can accept T/T and PayPal as payment methods. Similar to our other products, the customer is required to settle the remaining balance before the High Alumina Powder is dispatched.