700 Tons/Day Fluorite Beneficiation Project

Date: 2026-02-28 Categories: Client Cases Views: 13

The 700-ton-per-day fluorite beneficiation project adopts a mainstream process flow of "two-stage crushing - one-stage grinding - flotation - dewatering". Based on actual project cases, the technology is mature, the recovery rate is high, and the concentrate grade can reach more than 97% at this scale, which has good economic benefits and environmental feasibility.

日处理量700吨萤石选矿项目

Recommended Process Flow and Key Technologies

  1. Crushing and screening stage‌

    • ‌Coarse crushing: A jaw crusher is used to crush the raw ore (particle size ≤300mm) to 100–150mm.
    • Fine crushing: Cone crusher is used for further crushing to ≤15mm;
    • Screening: A circular vibrating screen is configured to form a closed-loop circulation to ensure uniform particle size entering the mill.

  2. Grinding and classification stage‌

    • A closed-circuit system combining a grate ball mill and a spiral classifier is used to control the grinding fineness to over 65% (-200 mesh), ensuring the liberation of fluorite monomers.
    • For ores with finer intercalated particle sizes, two-stage grinding can be considered to improve concentrate purity.

  3. Flotation separation stage‌

    • The mature flotation process of "one roughing, one scavenging, and seven cleaning" is adopted, with middlings returned sequentially to improve the recovery rate.
    • Flotation reagents: Sodium carbonate is used to adjust the pH to 8-9, oleic acid is used as a collector, and water glass is used to suppress gangue minerals such as quartz.
    • SF type mechanically agitated flotation machine is recommended for its stable operation and uniform bubble distribution.

  4. Concentrate dehydration and drying‌

    • Concentration: Preliminary dehydration is performed using a deep cone thickener.
    • Filtration: A chamber filter press is used to ensure the filter cake moisture content is below 20%.
    • Drying (optional): For long-term storage or transportation, an indirect rotary dryer is used to ensure the final product moisture content is <10%.
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