Overview
Sea Milk Stone is a naturally occurring calcium carbonate deposit formed from marine organisms over geological timescales. Composed primarily of calcite, it is distinguished by its porous structure and high bioavailability of calcium. Mined from ancient seabeds, this material is valued for its environmental applications, particularly in neutralizing acidic soils and treating wastewater. Its formation process results in a unique microstructure that enhances its reactivity compared to other limestone varieties.
Physical and Chemical Properties
The material typically contains 85-95% calcium carbonate with trace minerals including magnesium and strontium compounds. Its porosity ranges from 30-50%, giving it exceptional surface area for chemical reactions. When dissolved in acidic solutions, it effectively buffers pH while releasing calcium ions. The particle size distribution significantly affects its performance, with finer grades (100-200 mesh) preferred for agricultural use and coarser grades (20-50 mesh) for construction applications.
Main Applications
In agriculture, Sea Milk Stone serves as a cost-effective soil amendment to correct acidity and supplement calcium. Its slow-release properties prevent nutrient leaching while improving soil structure. Environmental engineers utilize it in flue gas desulfurization and heavy metal precipitation systems. The construction industry incorporates it as an additive in cement and as a natural filler in composite materials. Emerging applications include aquaculture water conditioning and biogas production optimization.
Safety and Storage
While non-hazardous under normal conditions, the powder form requires dust control measures to prevent respiratory irritation. Storage silos should maintain relative humidity below 60% to prevent caking. Bulk shipments should be protected from acid contamination which can cause rapid decomposition. For industrial-scale users, automated handling systems with dust collection are recommended to maintain workplace safety standards.
B2B Procurement Guide
Industrial buyers should specify calcium carbonate content, acid-neutralizing value (typically 90-95%), and heavy metal limits when sourcing Sea Milk Stone. Bulk shipments by maritime transport often offer the best economics for quantities above 500 tons. Quality verification should include XRD analysis to confirm mineral composition and BET surface area testing for reactivity assessment. Leading production regions include Southeast Asia and the Mediterranean basin, where marine deposits are particularly pure.
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