As of the current time in July 2025, there is a lack of specific and detailed data regarding the price trends of activated alumina in the provided search results. However, some relevant information can be to offer insights into the potential factors influencing its price.

Key Factors Influencing Activated Alumina Prices

• Product Specifications and Applications: Activated alumina comes in different specifications, such as the commonly mentioned 3-5mm spherical type in the search results. This type widely used in various fields. For example, it serves as a pressure swing adsorbent and applied in desiccation devices for petrochemical, refining, electronics, ethylene, propylene, and air industries. It also used as a defluorinating agent for drinking water and industrial wastewater treatment. Different application scenarios may have varying requirements for product performance, which can impact the price.
• Manufacturing Process and Raw Materials: Activated alumina belongs to the category of chemical alumina. Its production involves specific raw materials and preparation methods, which can affect the production cost and thus the final price. The complexity of the manufacturing process, such as scientific formulation and catalytic precision processing for high-purity alumina, may also contribute to price variations.  

• Market Supply and Demand: The supply and demand dynamics in the market play a crucial role in determining prices. If the demand for activated alumina in key application areas like water treatment, petrochemical, and air purification increases while the supply is relatively stable or limited, prices are likely to rise. Conversely, an oversupply may lead to price declines. Although specific supply and demand data is not provided in the search results, the wide range of applications mentioned indicates a potentially stable demand, which could support the price.

Considerations for Price Inquiry

In conclusion, while the search results do not provide explicit price trend data, understanding the key factors influencing activated alumina price and engaging with suppliers directly are essential steps in obtaining comprehensive and current pricing information.