1. Physical Separation: Industrial minerals must meet strict quality standards to be usable across industries. The first step in refining is physical separation, where impurities like rocks, clay, and organic matter are removed.
This includes:
- Screening & Sieving: Minerals are passed through different mesh sizes to separate large particles and unwanted debris.
- Gravity Separation: Heavier minerals settle while lighter impurities are removed.
- Magnetic Separation: Applied to minerals with magnetic properties, such as iron, to eliminate metallic impurities.
2. Washing & Hydrocycloning: Water-based methods help remove soluble and fine impurities.
- Washing: High-pressure water jets break down mineral clumps and wash away residues.
- Hydrocycloning: Uses a cyclone effect to separate impurities by density, ensuring fine minerals remain intact.
3. Chemical Purification: Some minerals require chemical treatments to remove stubborn impurities.
- Acid Leaching: Removes iron, carbonates, and other unwanted elements from minerals like silica and kaolin.
- Flotation: Chemicals alter surface properties, allowing pure minerals to rise while impurities sink.
4. Calcination & Heat Treatment: High-temperature processes refine minerals further, burning off volatile compounds and strengthening structure.
- Calcination: Applied to kaolin and refractory clay, where heating removes moisture and enhances whiteness.
- Roasting: Used in some cases to oxidize and eliminate contaminants.
5. Advanced Quality Testing: Purified minerals undergo strict testing to ensure they meet industry requirements.
- Particle Size Analysis: Determines fineness and consistency.
- Spectroscopy & Chemical Analysis: Measures purity levels and chemical composition.
- Moisture Control: Ensures stability during storage and transport.
Puresil’s Commitment: At Puresil, we use these processes to deliver the highest-quality minerals. Through regular quality checks and precision refinement, we ensure every batch meets stringent standards, providing industries with the purest materials for their critical applications.