Choosing Bauxite: Application Fit and Specification Checks

What the product is

According to the published description, the ore is a collective term for industrially usable minerals mainly composed of gibbsite, boehmite or diaspore. It is a non-renewable resource. The pure mineral is white. Impurities can make it look light gray, light green or light red, so color is not a reliable grade indicator on its own.

Step 1: Define your application

The description lists two broad groups of uses:

• Alumina and aluminum production. The ore is the main raw material for alumina, which is then used to produce aluminum.
• Industrial raw material uses. These include refractory materials, fused corundum, grinding materials, ceramic products, chemical products and high alumina slurry.

Write down which of these applies to you before you compare offers. The grade you need, the particle size and the impurity limits all depend on the end use. The published material does not say which size or grade fits which application, so ask the supplier to match a grade to your process.

Step 2: Decide whether you need calcined material

The supplier describes the calcined grade as high-quality ore calcined at high temperature in a rotary kiln. Calcining removes moisture. According to the published description, this raises alumina content from about 57%–58% in the original ore to 84%–88% after calcination.

If your process needs higher alumina content, the calcined grade is the relevant option. Confirm the calcination conditions and the moisture content of the batch you are being offered in writing. The temperature range given in the description should be checked with the supplier and not relied on as a specification.

Step 3: Check the published indicators

The product indicator table includes:

From this, buyers can confirm three published size ranges and an alumina figure of around 88%. Silica, calcium oxide, iron oxide and moisture values are not given in the confirmed material. If these impurities matter to your refractory, abrasive or ceramic application, request a full chemical analysis for the specific grade and lot before ordering.

Step 4: List what you need to confirm in writing

The published material does not cover price, lead time, packaging, minimum order quantity, certifications or test reports. Treat all of these as open questions. Get answers in writing, including a specification sheet and a lot analysis, before you place an order.

When this guide does not apply

If your process needs guaranteed limits for SiO2, CaO, Fe2O3 or moisture, a particle size outside 0-1, 1-3 or 3-5 mm, or a specific mineral phase (gibbsite, boehmite or diaspore), the published information alone is not enough to make a selection. Contact Xingtai Luxi Environmental Protection Technology Co., Ltd. with your requirements and ask for documented specifications first.