Overview
Environmentally friendly block lime is a sustainable variant of traditional quicklime (calcium oxide), produced with reduced energy consumption and lower CO₂ emissions. It is favored in green construction due to its recyclability and minimal environmental impact. The material is manufactured using advanced kiln technologies that capture and repurpose CO₂, aligning with global sustainability goals. Its slow carbonation process further enhances its eco-friendly profile, making it ideal for long-term construction projects.
Physical and Chemical Properties
Block lime exhibits high alkalinity (pH ~12.4) and a porous structure, which improves its binding capacity in mortars and plasters. Its exothermic reaction with water requires careful handling to prevent thermal cracking in applications. The material’s low solubility and slow hydration rate make it suitable for gradual stabilization projects, such as soil remediation or historical building restorations. Its white-to-gray color can vary based on impurities like magnesium oxide.
Main Applications
In construction, block lime is used for masonry mortar, exterior plastering, and lime washing due to its breathability and mold resistance. It is also employed in agriculture to neutralize acidic soils and in wastewater treatment to precipitate heavy metals. Industrial applications include flue gas desulfurization and paper manufacturing. Its eco-friendly properties have led to adoption in LEED-certified projects, where materials with low embodied carbon are prioritized.
Safety and Storage
Block lime is corrosive and can cause skin burns or respiratory irritation. Workers should use PPE (gloves, masks, and goggles) and ensure adequate ventilation during handling. Storage requires airtight containers or covered pallets to prevent moisture absorption, which can lead to premature slaking. Facilities should avoid co-storage with acids or ammonium salts to prevent hazardous reactions.
B2B Procurement Guide
Buyers should prioritize suppliers with ISO 14001 certifications or similar environmental credentials. Bulk purchases (20+ tons) often qualify for discounts, while regional suppliers reduce transportation emissions. Key procurement considerations include testing reports for purity (≥90% CaO), particle size consistency, and compliance with local green building standards like BREEAM or LEED. Sample testing before large orders is recommended.
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