_{Activated Alumina Balls}

Also known as modern water purification activated alumina, its English name is Activated Alumina or Reactive alumina; activated alumin(I)um oxide. In catalysts, alumina (AL2O3) is commonly referred to as activated alumina. It is a porous, highly dispersed solid material with a large surface area. Its microporous surface possesses the characteristics required for catalysis, such as adsorption properties, fluoride removal properties, drying properties, surface activity, and excellent thermal稳定性。因此，它被广泛用作家庭用干燥剂，以及化学反应中的催化剂和催化剂载体。

Product Usage

In the petrochemical and fertilizer industries, it is widely used as a catalyst and catalyst carrier. Modern activated alumina for water purification also has adsorption properties, thus it is used as a desiccant for gases and liquids, an adsorbent for gas purification, a fluoride removal agent for drinking water, and a substance for eliminating color and odor in industrial wastewater.

Can be used in conjunction with household fluoride removal tanks, making it an ideal drinking water fluoride removal device for homes. This fluoride removal filter material can also be used in conjunction with fluoride removal devices used by water treatment plants or industrial fluoride removal systems. For the activation of the fluoride removal filter material in household devices: prepare an aluminum sulfate solution (3 liters of water, 0.3 kg of solid aluminum sulfate), place the alumina(AL2O3)氟化物去除过滤材料加入溶液中，浸泡5-10小时后，丢弃浸泡液（浸泡过程中应适当搅拌），然后用清水清洗三到五次，每次使用约2升水，或者采用pH值调节方法进行再生，控制pH值为7.5。活化氧化铝氟化物去除过滤材料可以连续使用6-8年。当表面出现黄褐色时，表示氟化物已经去除。The removal effect significantly decreases, which is due to contamination by impurities in the water. Therefore, it is best to treat it with 3% dilute hydrochloric acid every six months, using the same operation method as the regeneration method.

Technical parameters:

Physical Properties

, and it is also required that alumina dissolves quickly in the cryolite melt, resulting in a deeper bottom of the electrolytic cell; the coating on the electrolyte has good heat preservation properties; it does not absorb moisture in the air, resulting in less loss due to dust, good fluidity, and is convenient for transportation and automatic feeding of the electrolytic cell. All of these characteristics depend on the physical properties of alumina.

The indicators used to characterize the physical properties of alumina include: angle of repose, α-Al2O3 content, bulk density, particle size, specific surface area, and wear coefficient.

1. Antefix. The antefix of alumina refers to the angle at which materials naturally accumulate on a smooth surface. Alumina with a larger antefix is more easily dissolved in electrolytes, allowing it to cover the electrolyte crust well during the electrolysis process, resulting in less loss of material.

2. The content of a-Al2O3 in alumina reflects the degree of roasting of the alumina. The higher the degree of roasting, the greater the content of a-Al2O3. The hygroscopicity of alumina deteriorates as the content of a-Al2O3 increases. Therefore, alumina used for electrolysis requires a certain amount of a-Al2O3. However, the solubility of a-Al2O3 in electrolytes is inferior to that of Υ-Al2O3.

3. 堆积密度。氧化铝的堆积密度指的是单位体积材料在自然状态下的重量。通常，堆积密度较低的氧化铝更容易溶解在电解质中。

4. Particle size. The particle size of alumina refers to the degree of its thickness. The particle size of alumina must be appropriate. If it is too coarse, it will dissolve slowly in the electrolyte and may even precipitate; if it is too fine, it will easily fly away and be lost.

5. 比表面积。氧化铝的比表面积指的是材料的总表面积，包括外部表面积和每单位重量的内部孔隙表面积。这是衡量物质活性的重要指标。具有较大比表面积的氧化铝在电解质中具有良好的溶解性，活性较高，但同时也容易吸收水分。

6. 磨损系数。磨损系数指的是在一定的控制条件下，样品在流化床上经过磨损后，颗粒尺寸分布的变化百分比。磨损系数是一个物理指标，用于表征氧化铝的强度。

Based on the physical properties of alumina, it can be further divided into three types: granular, floury, and intermediate. These three types of alumina differ significantly in physical properties. Granular alumina has a lower bulk density, a larger specific surface area, a slightly smaller angle of repose, contains a smaller amount of α-Al2O3, has more coarse and uniform particles, and is stronger. Floury alumina has a higher bulk density, a smaller specific surface area, contains a larger amount of β-Al2O3, and has finer and more uniform particles. Intermediate alumina has a moderate bulk density, a moderate specific surface area, contains a moderate amount of both α- and β-Al2O3, and has a balance of coarse and fine particles.The amount of α-Al2O3 contains more fine particles and is weaker. The intermediate type of alumina has physical properties that fall between the two. The physical properties of various types of alumina are shown in Table 1-3.

Common specifications:1-3mm, 3-5mm, 4-6mm, 5-7mm, 6-8mm

Packaging and Storage

Plastic woven bags, with different specifications according to different manufacturers: 25kg/50kg/ton bags. The products should be stored in a dry indoor environment. Do not open the packaging before use to prevent moisture absorption, which may affect the performance of the products.

After-sales service:

Our factory has always adhered to the business philosophy of "everything for the requirements of customers, we pursue quality, create product quality, and grow in profitability." We earnestly provide pre-sales and after-sales services to our customers, ensuring they receive satisfactory service. Our service network reaches every place where our products are sold. As long as customers have any requests, our staff will provide a satisfactory response within 24 hours!

Pre-sales:
(1) Produce according to the customer's product specifications and models.
(2) Customize and produce products according to the special requirements of customers.

(3) The packaging industry can package products according to customer requirements.

After-sales service:
(1) Assign dedicated after-sales service personnel to arrive at the site to guide customers through the debugging process.
(2) On-site training for operators.

(3) If there are any product quality issues within one year, we will promptly cooperate with the customer to resolve them.