What is Calcined Bauxite CAS 1318-16-7?

Calcined bauxite is a high-alumina mineral product made by heating selected bauxite ore to remove moisture and improve density, strength, and refractoriness. The 85% rotary-kiln grade contains at least 85% Al2O3 and is supplied for refractory and abrasive applications.

Is this bauxite intended for aluminum metal smelting?

No. This is refractory-grade or abrasive-grade calcined bauxite, not metallurgical-grade ore for the Hall-Heroult aluminum process. Its high-temperature calcination makes it dense and stable for furnace linings, castables, abrasives, and high-friction aggregates rather than alumina dissolution.

How does rotary-kiln calcined bauxite compare with shaft-kiln material?

Rotary-kiln material is usually more homogeneous and has higher bulk density, which suits demanding refractory bricks and castables. Shaft-kiln bauxite is often used for general refractory mortars or less critical applications where lower cost and standard performance are acceptable.

What are the key specifications of the 85% rotary-kiln grade?

Typical values include at least 85.0% Al2O3, not more than 1.8% Fe2O3, not more than 4.0% TiO2, and CaO plus MgO not more than 0.5%. Bulk density is at least 3.15 g/cm3, moisture is not more than 0.3%, and refractoriness is at least 1780 degrees C.

Calcined Bauxite CAS 1318-16-7

Calcined Bauxite, also called calcined aluminum ore or refractory bauxite, CAS 1318-16-7, is a high-alumina mineral aggregate supplied for refractory and abrasive applications. Confirm the required grade and specification, then request a quotation with COA/TDS/SDS for bulk supply.

CAS: 1318-16-7
Synonyms: Calcined Aluminum Ore, Refractory Bauxite, High Alumina Bauxite, Rotary Kiln Bauxite, Calcined Bauxite Aggregate.
Einecs: 603-521-7
Molecular Formula: Al₂O₃
Grade: Refractory Grade / Abrasive Grade
Package: 25kg/bag, 1MT/1.2MT Jumbo bag, or bulk vessel shipment

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Product Description

Calcined Bauxite CAS 1318-16-7 is a high-alumina mineral product made by heating selected bauxite ore, with the main component alumina (Al₂O₃) and EINECS 603-521-7.

Synonyms: Calcined Aluminum Ore; Refractory Bauxite; High Alumina Bauxite; Rotary Kiln Bauxite; Calcined Bauxite Aggregate.

CAS: 1318-16-7.

Molecular formula: Al₂O₃.

It is a dense, stable aggregate supplied for furnace linings, castables, abrasives and high-friction aggregates.

The 85% rotary-kiln grade contains at least 85.0% Al₂O₃.

Rotary-kiln material is usually more homogeneous and has higher bulk density than shaft-kiln material.

It is used to make high-alumina firebricks, castables and gunning mixes for high-temperature furnace linings.

It also serves as feedstock for brown fused alumina, as an anti-skid high-friction surfacing aggregate, and as molding sand in precision casting.

Typical values include not more than 1.8% Fe₂O₃, not more than 4.0% TiO₂, and CaO plus MgO not more than 0.5%.

The bulk density is at least 3.15 g/cm³, moisture not more than 0.3%, and refractoriness at least 1780 °C.

It is available in sizes such as 0-1mm, 1-3mm, 3-5mm and 200 mesh, and can be customized.

Store in a dry area protected from environmental moisture to prevent clumping in fine mesh grades.

Protect from moisture and keep containers closed when not in use.

Confirm appearance, Al₂O₃ content, Fe₂O₃, TiO₂, bulk density, moisture, particle size and grade as required.

Use suitable eye and skin protection during handling, and wash skin contact with soap and water.

Confirm packaging with the requested quantity and destination requirements.

The page is an RFQ entry point and does not state stock, price, MOQ or fixed lead time.

For an RFQ, state the intended application, required grade, quantity, packaging, destination and document needs.

FAQ - Technical & Supply Chain

Q:
What is Calcined Bauxite CAS 1318-16-7?

A: Calcined bauxite is a high-alumina mineral product made by heating selected bauxite ore to remove moisture and improve density, strength, and refractoriness. The 85% rotary-kiln grade contains at least 85% Al2O3 and is supplied for refractory and abrasive applications.
Q:
Is this bauxite intended for aluminum metal smelting?

A: No. This is refractory-grade or abrasive-grade calcined bauxite, not metallurgical-grade ore for the Hall-Heroult aluminum process. Its high-temperature calcination makes it dense and stable for furnace linings, castables, abrasives, and high-friction aggregates rather than alumina dissolution.
Q:
How does rotary-kiln calcined bauxite compare with shaft-kiln material?

A: Rotary-kiln material is usually more homogeneous and has higher bulk density, which suits demanding refractory bricks and castables. Shaft-kiln bauxite is often used for general refractory mortars or less critical applications where lower cost and standard performance are acceptable.
Q:
What are the main applications of this refractory/abrasive-grade calcined bauxite?

A: It is used to make high-alumina firebricks, castables, and gunning mixes for high-temperature furnace linings. It also serves as feedstock for brown fused alumina, as an anti-skid high-friction surfacing aggregate, and as molding sand or coating material in precision casting.
Q:
What are the key specifications of the 85% rotary-kiln grade?

A: Typical values include at least 85.0% Al2O3, not more than 1.8% Fe2O3, not more than 4.0% TiO2, and CaO plus MgO not more than 0.5%. Bulk density is at least 3.15 g/cm3, moisture is not more than 0.3%, and refractoriness is at least 1780 degrees C.

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