Silica Sand & High-Purity Quartz Plant

Specialized mineral processing lines removing iron and heavy impurities from silica sand to reach 99.5%+ SiO2 purity with <0.02% Fe2O3.

1. Process Overview & Flowchart Explanation

The Silica Sand & High-Purity Quartz Plant purifies raw quartz and silica sand deposits for photovoltaic glass, high-end optical glass, and foundry industries. Raw sand is scrubbed with attrition scrubbers where high-shear friction scrubs away clay coatings and iron oxide films from quartz grains.

The scrubbed pulp is classified by Hydrocyclone Separators and flows down Spiral Chute Concentrators to discard heavy mineral impurities (ilmenite, rutile, zircon). The sand slurry is then fed through High Gradient Magnetic Separators (1.2–1.5 Tesla) to remove paramagnetic iron-stained quartz and free iron grains. The purified silica sand is dewatered on High Frequency Dewatering Screens, delivering ultra-pure silica sand (SiO2 >= 99.5%, Fe2O3 <= 0.015%).

2. Technical Advantages & Features

• Ultra-Low Iron Content: Removes stubborn iron surface coatings and mineral inclusions, dropping Fe2O3 from 0.15% down to under 0.015%.
• Multi-Turn Heavy Mineral Separation: Spiral chutes cleanly reject heavy gangue minerals with zero power consumption.
• High-Gradient Magnetic Polish: SLon magnetic separators reliably trap weakly magnetic iron-bearing minerals.
• Direct Solar/Glass Grade Output: Meets strict chemical and particle size requirements for photovoltaic solar glass and foundry sand.