Overview
Maifan Stone Balls are a natural filtration medium derived from weathered granite rich in bioavailable minerals. Originating from volcanic deposits in East Asia, they contain over 50 trace elements, including silica, alumina, and iron oxides. Their unique honeycomb structure provides a surface area of 100–300 m²/g, enabling effective adsorption of heavy metals (e.g., lead, cadmium) and organic pollutants. Unlike synthetic resins, they simultaneously mineralize water with calcium and magnesium ions, creating alkaline water with pH 7.5–8.5.
Physical and Chemical Properties
The spherical form factor (3–10 mm) ensures low pressure drop in filtration systems, with a hardness of 6–7 Mohs for durability. X-ray diffraction studies confirm crystalline structures of feldspar and quartz as primary components. Electron microscopy reveals micron-scale pores (0.1–10 μm) that trap particulate matter while allowing ionic exchange. Laboratory tests demonstrate 85–95% removal efficiency for chlorine and 70% for fluoride at 25°C. The mineral release rate is temperature-dependent, increasing by 15% per 10°C rise.
Main Applications
In residential water filters, Maifan Stone Balls are layered with activated carbon for multi-stage purification. Aquaculture farms use them to stabilize pond water parameters, reducing fish mortality by 20–30%. Industrial applications include pretreatment for reverse osmosis systems, where they prevent membrane scaling. Emerging uses span hydroponic agriculture (nutrient supplementation) and cosmetic formulations (mineral-enriched toners). Japanese onsen baths incorporate them to recreate therapeutic hot spring conditions.
Safety and Storage
Though non-radioactive, prolonged use beyond 12 months may cause structural breakdown, releasing fine particulates. Regular backwashing (every 2–3 months) maintains porosity. Storage requires moisture control—relative humidity above 70% can trigger premature mineral leaching. UV sterilization between uses is recommended for medical-grade applications. Material Safety Data Sheets confirm no hazardous decomposition products below 300°C.
B2B Procurement Guide
For industrial buyers, request ICP-OES mineral analysis reports verifying <0.1 ppm arsenic/mercury content. Standard packaging is 25 kg woven PP bags with moisture barrier liners. Leading Chinese producers (e.g., Inner Mongolia suppliers) offer OEM customization for pellet size distribution. MOQs typically start at 500 kg, with FOB prices decreasing 8–12% for orders above 5 tons. Third-party SGS testing for heavy metal adsorption capacity is advisable.
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