Medium-Grade Phosphate Rock

P₂O₅ content: Usually between 24% and 30%. Characteristics: Contains a certain amount of impurities, which typically necessitates a beneficiation process (such as flotation, scrubbing, etc.) to meet the industrial usage standards. Usage: After the beneficiation process, it can be utilized in fertilizer production for common superphosphate (SSP), calcium magnesium phosphate fertilizer, and other mid-to-low-end phosphate fertilizers. Additionally, it can serve as a blending raw material for high-grade phosphate rock.

Primary Uses and Applications

Once the phosphate concentrate undergoes the beneficiation process, it can be utilized for the same applications as high-grade phosphate rock:

Fertilizer Production: The primary use of the beneficiated concentrate. It serves as a key raw material for:

- Di-ammonium Phosphate (DAP) and Mono-ammonium Phosphate (MAP)

- Triple Superphosphate (TSP)

Wet-Process Phosphoric Acid: The beneficiated concentrate is a standard feed material for acid production, which is subsequently utilized in fertilizer production and the creation of industrial phosphate salts.

Elemental Phosphorus Production: This concentrate can be used in electric arc furnaces, although it necessitates specific sizing (lump ore) and often a particular silica content.

Limited Direct Uses (Without Beneficiation):

Blending: The concentrate can be mixed with high-grade phosphate rock to reduce overall raw material costs.

Calcium Magnesium Phosphate Fertilizer: It can be directly utilized in this specific fertilizer process, which is more tolerant of impurities.

Direct Soil Application: The concentrate can be applied directly to acidic soils as a slow-release amendment, although this method is inefficient and uncommon.