Silica Manufacturing Process

• Sand Excavation: This involves the use of dredgers or backhoe loaders to extract sand from the riverbed.
• Transport: The sand is moved to the processing plant through trucks or conveyor belts.
• Washing and Desliming: High-pressure water jets are used to wash the sand and remove fines and clay.
• Screening: Vibrating screens separate the sand into different size fractions.
• Attrition Scrubbing: The sand particles are scrubbed against each other to remove surface stains and impurities.
• Magnetic Separation: Magnetic drums or separators are used to remove magnetic minerals like iron.
• Gravity Separation: Spiral concentrators or shaking tables are used to further purify the sand by removing heavier minerals.
• Drying: Rotary or fluid bed dryers reduce the moisture content of the sand.
• Size Classification: Screens or air classifiers ensure the sand is sorted into various sizes as required by different applications.
• Storage and Packaging: The final product is stored in silos before being packaged in bags or bulk containers for delivery.