Filter Quartz Sand[2]
Overview
Filter Quartz Sand is a processed form of high-purity silica sand specifically graded for filtration applications. It is produced by crushing, washing, and precisely sizing quartz minerals to create uniform particles with optimal filtration characteristics. The material's natural hardness and chemical stability make it ideal for removing suspended solids in both municipal water treatment and industrial processes. Its consistent performance and long service life have established it as a standard filtration medium worldwide.
Physical and Chemical Properties
Filter Quartz Sand typically contains 98-99.8% SiO2, with iron oxide and other impurities carefully controlled. The particles exhibit high crush resistance (Mohs hardness 7) and maintain structural integrity under pressure. Its chemical inertness ensures no reaction with water or most chemicals across a wide pH range (2-12). The material's specific gravity of 2.65 provides ideal settling characteristics, while its rounded to sub-rounded particle shape optimizes flow rates and dirt-holding capacity.
Main Applications
In water treatment, Filter Quartz Sand serves as the primary medium in rapid gravity filters and pressure filters for municipal drinking water. It effectively removes particles down to 20-50 microns depending on grade selection. Industrial applications include pretreatment for reverse osmosis systems, swimming pool filtration, wastewater treatment plants, and process water clarification for food/beverage production. The oil/gas industry uses it for produced water filtration and frac sand operations.
Safety and Storage
While non-toxic, prolonged exposure to airborne dust may cause silicosis. Proper handling requires dust control measures and NIOSH-approved respirators for workers. Eye protection and gloves are recommended during loading/unloading operations. Storage should be in covered, dry areas to prevent moisture absorption and contamination. Bulk bags should be stacked no more than 3 high to maintain product integrity. Shelf life is essentially unlimited if stored correctly.
B2B Procurement Guide
Key specifications to define include: SiO2 content (typically 98-99.5%), mesh size (common grades are 12×20, 20×30, or 30×40), acid solubility (<5% is standard), and turbidity value (<50 NTU). For large-volume purchases, consider testing representative samples for conformance to ANSI/AWWA B100-09 standards. Bulk shipments by truck or rail typically offer better economics than bagged product for industrial-scale operations.
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