Product Introduct
Battery Grade Aluminum Sulfate (Al₂(SO₄)₃·xH₂O), Al₂O₃≥16–17%, Fe≤0.005%, water-insoluble matter≤0.05%, high purity and low impurities, easily soluble in water and acidic stable; as the source of aluminum ions and acidity regulator in the battery material system, it ensures the purity of the system and the controllability of the reaction.
Application
Lithium-ion battery cathode/precursor material preparation
Battery-grade alumina production support
Battery slurry system acidity adjustment
Energy storage material intermediate production
High-purity electronic chemical production support
Product Parameters
|
Index requirements for granular aluminum sulfate |
||
|
Indicators |
Standard value |
Test value |
|
Alumina (AL2O3) content, % |
≥16.00 |
16.20 |
|
Iron (Fe) content, % |
≤0.002 |
0.0015 |
|
(Water-insoluble matter) content, % |
≤ 0.1 |
0.08 |
|
PH (1% aqueous solution) content, % |
≥ 3.0 |
3.15 |
pH Range
pH 2.0–3.5: Al³⁺ is stable and suitable for precursor preparation.
pH 3.5–5.5: Controllable hydrolysis, beneficial for structure adjustment.
pH 5.5–6.5: Requires precise control to prevent precipitation fluctuations.
Coagulation Effect
High Charge Neutralization: Trivalent aluminum ions rapidly disrupt colloidal stability.
Rapid Nucleation: Generates polynuclear hydroxyl complexes, improving flocculation efficiency.
Rapid Settling: Forms dense flocs, reducing filtration load.
Low Metal Residue: Avoids the risk of secondary pollution.
Related Processes
Dissolution Process: Rapid dissolution at room temperature; deionized water is recommended.
Precise Dosing: Metering pump controls the proportion to ensure system stability.
Online pH Control: Ensures consistent hydrolysis reaction.
Precision Filtration: Controls residual impurities.
Batch Stability
① Raw Material Control: High-purity raw materials, with source control of Fe and heavy metals.
② Component Analysis: Full testing (ICP) of Al₂O₃, Fe, and heavy metals.
③ Performance Consistency: Comparative testing of dissolution rate and pH curve.
④ Deviation Control: Al₂O₃ fluctuation ≤ ±0.3%, Fe stable at the ppm level.
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