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Classified by appearance, aluminum sulfate can generally be divided into flake aluminum sulfate, granule aluminium sulfate, lump aluminium sulfate and powder aluminum sulfate. The production process of aluminum sulfate is to first react sulfuric acid, aluminum ore, and aluminum hydroxide with water to produce aluminum sulfate solution, while for the convenience of transportation, we make liquid aluminum sulfate in solid form. Usually, we send aluminum sulfate solution through pipelines to crystallization equipment and let it undergo physical crystallization through two methods: Air Cooling and Water Cooling, in order to obtain large solid aluminum sulfate.
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Of course, this is not over yet. To facilitate packaging, we transport these large solid aluminum sulfate solutions to a crusher through conveying equipment, and then crush them to obtain smaller and more suitable aluminum sulfate flakes.
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In fact, there is not much difference between aluminum sulfate flakes and aluminum sulfate granules, mainly based on the thickness of liquid aluminum sulfate dripping on the crystallization equipment. If the aluminum sulfate solution drips relatively thick on the crystallization steel strip, the final product can be called aluminum sulfate granules. Similarly, if the aluminum sulfate solution drips relatively thin on the steel strip, the final product is aluminum sulfate flakes, and they all have the same content.
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Due to the presence of crystalline water in aluminum sulfate, its texture is relatively brittle. Therefore, the sheet-like shape of aluminum sulfate flake is irregular crystalline, with a particle size generally ranging from 0-25mm.
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ITEM |
SPECIFICATION |
RESULT |
Aluminum sulfate flake |
flake |
Conformed |
Average Size Of Flakes, max |
0-25mm |
Conformed |
Aluminum oxide Al2O3 %, min |
15.80 |
15.95 |
Iron (Fe) content %, max |
0.50 |
0.28 |
Water insoluble matter %, max |
0.10 |
0.06 |
PH value 1% aqueous solution, min |
3.0 |
3.10 |
As %, max |
0.0005 |
0.00004 |
Heavy metals as Pb %, max |
0.002 |
NONE DETECTED |
Color |
Gray& buff |
Conformed |
Packing:25kg,50kgs or 1000kg/ bag, in lined with plastic bag, outer woven bag |
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