Spray granulation is to spray polyaluminum chloride into tiny particles when it is dried. This type of granule has good application performance. Polyaluminum chloride is a water-soluble substance with good thermal stability and high solubility.

Product Introduction

Introduction of spray drying polyaluminium chloride

It is an inorganic polymer flocculant with the advantages of good spray drying stability, wide adaptability to water area, fast hydrolysis speed, strong adsorption capacity, large alum formation, fast dense sedimentation, low effluent turbidity, good dehydration performance, etc.

[Chinese name] spray drying polyaluminum chloride (polyaluminum for short)

Polyaluminium Chloride, abbreviated as PAC

[Molecular formula] [AL2 (OH) LnCL6-n] m

[Technical Standard] The product quality meets the GB15892-2009 standard

Product Features

Characteristics and mechanism of spray drying polyaluminum chloride:

The characteristics of pressure spray drying are mainly determined by the working principle of pressure atomizer, which makes this drying system have its own characteristics. Since the products obtained by pressure spray drying are porous particles or hollow particles, the purpose of pressure spray drying is to obtain granular products, and the granular products obtained have excellent dust prevention performance and flow performance. Due to the large contact area between the product and water, the wettability is better than that of powder products, and the speed of purified water is significantly higher than that of powder products. Products dried by pressure spray have their own characteristics, so they are well received by users.

   Spray granulation is to spray polyaluminum chloride into tiny particles when it is dried. This type of granule has good application performance. Polyaluminum chloride is a water-soluble substance with good thermal stability and high solubility. During the drying process, a 40% -50% solid content polyaluminum chloride solution is introduced into a high-pressure pump, and after being pressurized, it enters the atomizer in the dryer for atomization, dispersing into small droplets. After the droplets are dried, granular products are obtained, completing both drying and granulation simultaneously.

Physical and chemical properties of spray drying polyaluminum chloride

The spray drying polyaluminum chloride has a yellow powder appearance and is easily soluble in water. It is characterized by fine powder, uniform particles, easily soluble in water, good flocculation effect, high efficiency and stability of purification. It has low acidity and is suitable for a wide range of pH values (5.0-9.0).

Production process of spray drying polyaluminum chloride

Spray drying polyaluminum chloride is produced by spray drying method, which is divided into drinking water level, industrial level and food level. Drinking water grade is mainly used for drinking water treatment, industrial grade is used for industrial wastewater treatment, and food grade is used for food additives and medical applications.

In conclusion, spray drying polyaluminum chloride plays an important role in the field of water treatment due to its excellent physical and chemical properties and wide application fields.

Product Usage

Specific uses include:

Drinking water treatment: spray drying polyaluminum chloride can be used for drinking water treatment to remove bacteria, odor, fluorine, aluminum, chromium and other pollutants in water to ensure water quality safety.

Industrial water and wastewater treatment: suitable for the treatment of industrial water and industrial recycled water, as well as the treatment of various types of wastewater, such as coal mine flushing wastewater, porcelain industry wastewater, printing factory wastewater, etc.

Other applications: also used for wrinkle prevention treatment of leather and fabrics, cement solidification and molding casting, refining of pharmaceuticals and food, etc

Use method of spray drying polyaluminium chloride:

Prepare the solid product into a liquid product with a content of 10%, add 1.5-3.0% of the liquid product to the slurry to be coated, and stir until it is fully mixed with the slurry. Its usage is the same as aluminum sulfate, with a dosage of only one-third of aluminum sulfate, calculated as 2% -3% based on dry paper

1. It is an inorganic polymer compound that is easily soluble in water and has a certain degree of corrosiveness.

2. According to the different quality of raw water, a small test should be conducted before use to determine the optimal dosage (reference dosage range: 20-800ppm).

3. For ease of calculation, the experimental solution should be prepared in a weight to volume ratio (W/V), generally ranging from 2% to 5%. Prepare a 3% solution. Weigh PAC3g and add it to a 200ml graduated cylinder that has been washed. Add about 50ml of water and wait for it to dissolve. Then dilute with water to the 100ml mark and shake well.

4. When in use, liquid products should be mixed with 5-10% water, and solid products should be mixed with 3-5% water (calculated based on the weight of the product).

5. When preparing, mix and dissolve the solid to water mixture at a ratio of approximately 1:5 (W/V), then dilute with water to the above concentration.

技术参数

 Precautions for spray drying polyaluminium chloride:

1. This product is a slightly acidic product and should not be stored together with alkaline substances (such as bleach, lime, etc.), otherwise the product will become ineffective.

2. Solid products are prone to moisture absorption and should be stored in a dry place.

3. When the packaging bag is intact, the shelf life is one year.

Application of spray drying polyaluminium chloride