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Nonferric Aluminum sulfate is a white crystal with a specific gravity of 1.69. It is easy to absorb moisture and form lumps when stored in the air for a long time. The dehydration temperature is 86.5℃. It is soluble in water, acid and alkali. The aqueous solution is acidic and has a sour and astringent taste. Chemicalbook starts to decompose when heated to 530℃ and ends at 860℃. The final decomposition product is r-AL2O3. During the hydrolysis process of nonferric aluminum sulfate, the intermediate product basic salt is first generated, and then aluminum hydroxide is generated.
| Appearance: | Solid aluminum sulfate is white, gray-green or light yellow flakes or blocks, and liquid aluminum sulfate is light green or light yellow liquid. |
| Solubility: | Soluble in water, acid and alkali, insoluble in alcohol. |
| Aqueous solution: | The aqueous solution is acidic and generates aluminum hydroxide after hydrolysis. |
| Density: | The specific gravity is 1.69. |
| Thermal stability: | It starts to decompose when heated to 530℃ and ends at 860℃. The final decomposition product is aluminum oxide (Al2O3) |
Sizing Agent is a papermaking additive that can give paper and paperboard anti-ink, water, emulsion, corrosion resistance and other properties to improve its smoothness, strength and service life. Sizing agents can be divided into internal sizing agents and surface sizing agents.
Powdered aluminum sulfate is mainly used as a flocculant in industrial water treatment, and can be compounded with polyaluminum chloride and polyacrylamide to form a mixed agent. It can also be used in papermaking, petrochemical, cement accelerator industries, etc.
Aluminum sulfate is a commonly used inorganic flocculant. It is widely used in water treatment. It has the advantages of low price, easy use and good treatment effect. However, when using aluminum sulfate as a flocculant, it is necessary to pay attention to the control of parameters such as its dosage and pH value to ensure the treatment effect.
The application of aluminum sulfate powder in soil mainly focuses on its role as an amendment, especially the improvement of Aluminum Sulphate Powder Used In Soil. As a chemical amendment, aluminum sulfate has significant effects in improving saline-alkali soil, adjusting soil pH and improving soil physical properties. Through reasonable application, soil quality and crop yield can be significantly improved.
Index requirements for powdered aluminum sulfate used in industrial water treatment | ||
Indicators | Standard value | Detection value |
Alumina (AL2O3) content, % | ≥15.60 | 15.80 |
Iron (Fe) content, % | ≤0.5 | 0.45 |
(Water-insoluble matter) content, % | ≤ 0.2 | 0.15 |
PH (1% aqueous solution) content, % | ≥ 3.0 | 3.10 |
Sieve analysis | 10-20 mesh | 95% pass through 15 mesh sieve |
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