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China's Aluminum hydroxide: High performance Fillers

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Introduction of Aluminum hydroxide

Aluminum hydroxide, also known as alumina trihydrate (ATH), is a widely utilized inorganic compound in various industrial applications due to its multifunctional properties. Derived from bauxite ore during the Bayer process, Al(OH) serves as a precursor in the production of aluminum oxide and metallic aluminum, but its utility extends far beyond this.The versatility, availability, and safety profile of aluminum hydroxide make it an essential material in a broad spectrum of industrial applications, with ongoing research focusing on enhancing its performance through surface modification, particle size control, and composite formulations.


Aluminum hydroxide serves as an effective flame-retardant filler, primarily comprising Al (OH)3. This white micro powder exhibits no secondary pollution, rendering it an environmentally benign inorganic flame retardant. Aluminum hydroxide confers flame retardancy, smoke suppression, filling properties, antistatic characteristics, and more to products. Notably, it offers advantages such as cost-effectiveness, high performance, stability, non-volatility, non-corrosiveness to equipment, and a high decomposition temperature.

Aluminum hydroxide Type

1-100um Aluminum hydroxide has 3 grade size grade and 3 whiteness.

Aluminum hydroxide is a versatile material that comes in a wide range of particle sizes, typically ranging from 1 to 100 micrometers (µm). The particle size, or "granulometry," of aluminum hydroxide plays a crucial role in determining its suitability for various industrial applications. Different industries and applications require specific particle sizes to optimize performance, quality, and efficiency.

Size Grade

Superfine Powder of Aluminum hydroxide: 1-3um particle size

Fine Powder of Aluminum hydroxide :5-11um particle size

Coarse Powder of Aluminum hydroxide :13-105um particle size

Whiteness Grade:High whiteness,middle whiteness and low whiteness

High whiteness aluminum hydroxide is the highest grade of purity, characterized by its exceptionally bright and uniform white appearance. It is typically used in applications where the visual quality and purity of the material are of utmost importance.

Medium whiteness aluminum hydroxide has a slightly lower degree of whiteness compared to the high white grade. It still maintains a relatively bright appearance but may have slight variations in color due to the presence of minor impurities. This grade is commonly used in applications such as flame retardants, ceramics, and certain water treatment processes.

Low whiteness aluminum hydroxide, as the name suggests, has the lowest degree of whiteness among the three grades. This grade typically contains a higher level of impurities or organic matter, which affects its overall color and appearance.

The degree of whiteness in aluminum hydroxide is influenced by factors such as the source of the raw material, the processing methods used, and the presence of impurities like iron, calcium, or silica. The purification process, including washing, refining, and sometimes bleaching, can significantly affect the final whiteness of the product. The higher the purity of the material, the brighter and whiter it will appear, which is why high white aluminum hydroxide is often more expensive than the lower grades.

Activated Aluminum Hydroxide(Surface Treated grade)

Activated aluminum hydroxide can improve the combination and processability of aluminum hydroxide and resin, and make it have double functions of flame retardant and filler. Therefore, adding the activated aluminum hydroxide to plastics, rubber and other composite materials can not only make the product have flame retardant, smoke suppression and self extinguishing effect, but also enhance the anti leakage, arc resistance and wear resistance.

Normal Wet and Dry Grade Aluminum Hydroxide

Aluminum hydroxide plays a critical role in the production of aluminum sulfate and various other aluminum salts, making it an essential raw material in a wide range of industrial processes. Its versatile chemical properties, including its ability to easily react with acids, make it a key component in the synthesis of these compounds. Below, we expand on its significance and the processes involved in producing aluminum sulfate and other aluminum salts.

1.Role in the Production of Aluminum Sulfate

Aluminum hydroxide reacts with sulfuric acid to form aluminum sulfate:

2Al(OH)3+3H2SO4→Al2(SO4)3+6H2O2Al(OH)3 + 3H2SO4 → Al2(SO4)3 + 6H2O

Aluminum sulfate is is one of the most commonly produced aluminum salts, and it is widely used in applications such as water treatment, paper manufacturing, and in the textile industry

2.Production of Other Aluminum Salts

Aluminum hydroxide is used to produce aluminum chloride (catalysts and deodorants) and potassium aluminum sulfate (water purification, dyeing, cosmetics).

3.Acid Neutralization and pH Adjustment:

Its amphoteric nature allows controlled reactions with acids, producing high-quality aluminum salts while maintaining pH balance.

4.Flame Retardant Applications:

In combination with aluminum salts, it contributes to flame-retardant materials by releasing water and forming protective layers under heat.

Benefits:

Aluminum hydroxide is valued for its purity, versatility, and cost-effectiveness, making it indispensable in aluminum-based product industries.

Application of Auminum hydroxide

Aluminum Hydroxide 1-10um flame retardant powder can be used for:

1. Micro powder 1-5 micron series is used for wire, cable, paper, copper clad plate, silicone rubber, foam insulation materials, paper making, PVC, etc;

2. The 8-10 micron series is used for fiberglass, insulation boards, flame retardants, conveyor belts,carpets, BMC/SMC, plastics, epoxy resin sealing materials, etc;

Aluminum Hydroxide 11-90um flame retardant powder can be used for artificial stone,marble,and solid surface.Its unique properties make it an ideal additive to improve the fire safety, durability, and overall performance of these materials.

Aluminum Hydroxide in Cleaning Agents:

Aluminum hydroxide (Al(OH)) is a valuable ingredient in the formulation of cleaning agents due to its unique chemical properties. Its ability to regulate pH, enhance solubility, and improve overall cleaning effectiveness makes it a crucial component in various cleaning products.

  1. PH Regulation: Aluminum hydroxide adjusts the pH level of cleaning agents, making them more suitable for various cleaning requirements.
  2. Enhanced Solubility: It can improve the solubility of cleaning agents, aiding in the removal of grease and impurities.
  3. Improved Cleaning Effectiveness: By regulating the pH, aluminum hydroxide enhances the cleaning efficiency, making the cleaner more effective on different types of surfaces.

Conclusion

Aluminum hydroxide is a highly versatile compound with a wide range of industrial applications. Its role as a flame retardant, water treatment agent, precursor for aluminum salts, and additive in pharmaceuticals and cosmetics makes it an indispensable material in modern manufacturing and safety practices. The ability to regulate pH, enhance solubility, and improvematerial properties, combined with its environmental safety and cost-effectiveness, ensures that aluminum hydroxide will continue to play a key role in various industries for years to come.

As industries increasingly demand materials that are both effective and environmentally responsible, aluminum hydroxide remains a key player in developing safer, more durable, and sustainable products across numerous sectors.

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