Acid-grade vs metallurgical-grade fluorspar

Why this matters

The words acid-grade and metallurgical-grade describe more than a marketing label. They point to different purity targets, impurity tolerances, and end-use expectations.

Use the grade label as a starting point, then check the actual impurity numbers that matter to your plant, not just the headline CaF2 band.

Buyer checklist

If you are using this article for RFQ prep, these are the details that should be explicit before a supplier quote is meaningful.

• Ask what CaF2 range the supplier publishes for each grade.
• Check whether the buyer process is chemical or metallurgical.
• Verify which impurity limits are tied to the grade and which are quoted separately.

Common mistakes

These mistakes slow down procurement or create quality surprises after the cargo lands.

• Using grade names as if they were globally standardized.
• Assuming metallurgical grade is always low-spec or unusable for chemicals.
• Skipping the impurity table because the CaF2 number looked good.

Practical takeaway

Grade names are useful shorthand, but the COA is the real buying document.