Zibo Dingqi Chemicals Co., Ltd. is one of the most experienced manufacturers and suppliers of aluminum sulfate crystals in China. Welcome to wholesale high quality aluminum sulfate crystals made in China here from our factory. For price consultation, contact us.
Product Overview
Aluminum Sulfate Crystals are a solid aluminum sulfate product supplied in crystalline form for industrial and water treatment applications.
The material is evaluated according to chemical composition, active aluminum content, controlled impurity thresholds, and crystal morphology to ensure stable performance across various chemical processing requirements.
Technical Specifications & Parameter Analysis
|
Parameter |
Specification Range |
Technical Significance |
|
Product Name |
Aluminum Sulfate Crystals |
Crystalline solid form |
|
Chemical Formula |
Al2(SO4)3 * xH2O |
Standard hydrate crystal structure |
|
Al2O3 Content |
>= 17.0% |
Determines the active chemical concentration and dosing efficiency |
|
Iron (Fe) Content |
<= 0.005% - 0.008% |
Controls discoloration risks in sensitive applications |
|
Insoluble Matter |
<= 0.15% |
Evaluates purity and minimizes residue buildup in dissolution tanks |
|
pH Value (5% Solution) |
3.0 - 4.0 |
Indicates acidity profile in aqueous preparation |
|
Crystal Size |
Granular / Customized sizing |
Influences dissolution rate and feeding system compatibility |
|
Packaging Options |
25 kg moisture-resistant bags / 1000 kg jumbo bags |
Designed for secure transport and storage stability |
Product Advantages & Manufacturing Capabilities
Controlled Iron Impurity Levels: Advanced purification and crystallization processes limit iron content to 0.005% - 0.008%, preventing discoloration and heavy metal interference in sensitive water treatment and paper manufacturing processes.
Optimized Dissolution Rate: Precision-controlled crystal sizing and multi-stage mechanical screening ensure rapid, uniform dissolution in preparation tanks, minimizing undissolved residue and clogging in automated dosing systems.
Traceable Batch Quality: Every production lot undergoes rigorous laboratory testing for active Al2O3 concentration, moisture, and insoluble matter, backed by comprehensive Certificates of Analysis (COA) for total supply chain transparency.
Reliable Bulk Supply Capacity: Large-scale crystallization lines and dedicated warehouse management guarantee stable, year-round delivery schedules for municipal contractors and international chemical distributors.
Industrial Applications
Water Treatment and Municipal Processing
Crystalline aluminum sulfate serves as an effective coagulant in municipal and industrial water purification processes.
Turbidity & Suspended Solids: Neutralizes colloidal charges to clarify raw water effectively.
Application Adaptation: Requires preliminary jar testing to determine optimal dosing rates based on raw water parameters, temperature, and pH fluctuations.
Industrial Wastewater Treatment
Applied in specialized wastewater systems to precipitate phosphorus, remove heavy metal complexes, and break stable oil-water emulsions. Selection depends on wastewater chemistry and downstream sludge generation limits.
Paper Manufacturing
Utilized in specific papermaking processes for internal sizing and retention control. Compatibility depends on wet-end chemistry and target sheet technical requirements.
Manufacturing Process & Quality Assurance
The production process involves controlled chemical reactions of aluminum-bearing feedstocks with sulfuric acid, followed by precise crystallization, temperature-regulated drying, and mechanical screening.
Reaction & Crystallization: Controlled temperature profiles during crystallization govern crystal growth and minimize soluble impurity inclusion.
Screening & Sizing: Multi-stage mechanical screening ensures a consistent particle size distribution, preventing caking and supporting smooth dissolution.
Batch Testing: Laboratory verification is conducted prior to packaging to confirm active content, iron levels, and moisture thresholds.
Packaging, Storage, and Logistics
Proper packaging protects crystalline products from atmospheric moisture absorption and caking during transport and warehousing.
Packaging Formats: Multi-layer paper-plastic composite bags or polyethylene-lined woven bags (25 kg / 50 lb). Bulk flexible intermediate bulk containers (1000 kg) are available for high-volume handling.
Storage Recommendations: Store in a cool, dry, well-ventilated area away from incompatible materials. Keep packaging tightly sealed to prevent moisture uptake.
Handling Precautions: Use appropriate personal protective equipment, including gloves and eye protection, during handling and preparation.
FAQ
Q: What factors distinguish different grades of aluminum sulfate crystals?
A: Grades are primarily distinguished by active Al2O3 concentration, iron impurity thresholds, insoluble matter levels, and crystal size distribution. High-purity grades are tailored for applications sensitive to trace metals or color interference.
Q: How should crystalline aluminum sulfate be stored to prevent caking?
A: Store the product in original sealed packaging inside a dry, covered warehouse. Avoid direct contact with damp floors and extreme temperature fluctuations to maintain free-flowing physical characteristics.
Q: What documentation accompanies each commercial shipment?
A: Each shipment is accompanied by a Certificate of Analysis detailing batch test results against agreed specifications, alongside the relevant Safety Data Sheet.
Q: What information is required to process a technical inquiry or quotation?
A: To receive accurate technical and commercial documentation, please provide the estimated order volume, destination port, target application, and required chemical specifications.
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