Production Process
Aluminum sulfate is synthesized through advanced methods including pressurized reactions of high-purity bauxite with sulfuric acid or via decomposition of silicon-rich minerals like alunite and kaolin. In the optimized sulfuric acid process, refined bauxite undergoes precise crushing, followed by controlled reactions in specialized reactors. Post-reaction, the solution is purified through sedimentation, adjusted to a neutral/slightly alkaline pH, and subjected to thermal concentration at 115°C. The resultant product is crystallized, solidified, and processed into uniform granules. Core reaction:
*Al₂O₃ + 3H₂SO₄ → Al₂(SO₄)₃ + 3H₂O*
Versatile Industrial Applications
Environmental Solutions
Water Purification: A premier coagulant for municipal and industrial wastewater treatment, effectively binding suspended particles into rapid-settling flocs. Ensures compliance with potable water standards by eliminating impurities and odor.
Soil Enhancement: Hydrolyzes to release trace sulfuric acid, improving clay soil structure for enhanced aeration and drainage.
Advanced Manufacturing
Paper Engineering: Iron-free grades serve as high-performance sizing agents, boosting paper’s water resistance and brightness while optimizing production efficiency.
Textile Innovation: Facilitates dye fixation on plant-based fibers by generating colloidal aluminum hydroxide, ensuring vibrant, long-lasting coloration.
Cement Acceleration: Critical component (40-70% concentration) in rapid-hardening formulations for modern construction needs.
Safety & Resource Management
Fire Suppression: Core ingredient in foam-based fire extinguishing systems when combined with sodium bicarbonate.
Mining Efficiency: Enhances metal recovery as a selective flotation agent in mineral extraction processes.
Specialty Chemical Applications
Leather Crafting: Protein-binding tanning agent producing durable, antimicrobial, and water-resistant hides.
Cosmetic Science: Key astringent in antiperspirant formulations for pH-controlled sweat reduction.
Petroleum Refining: Dual-function catalyst for hydrocarbon cracking and deodorization in fuel production.
Material Science & Beyond
Wood Preservation: Creates acidic protective layers to inhibit fungal growth in timber products.
Adhesive Technology: Accelerates curing in urea-formaldehyde resins (20% solution) and reinforces animal glue viscosity.
Precision Electroplating: Essential additive for aluminum/copper deposition baths.
Agricultural & Aesthetic Uses
Horticultural Enhancement: Soil additive for pH-modulated blue pigmentation in hydrangeas and select blooms.
Oil Clarification: Clarifying agent for edible and industrial oils.
Technical Advantages
Stability Control: Partners with surfactants to prevent particle sedimentation in suspensions.
Precision Synthesis: Foundation material for advanced aluminates, synthetic gemstones, and specialty alums.
This re-engineered aluminum sulfate delivers cross-industry performance, combining operational efficiency with environmental responsibility. Its adaptable chemical properties position it as a cornerstone material for 21st-century industrial challenges.
Contact Person: Jerry zhang
Tel: +86 18795688688
Fax: 86-510-8755-2528
