Aluminum ash is rich in resources such as aluminum and alumina, and has high resource utilization value. Among them, the aluminum ash produced in the production of aluminum and recycled aluminum is called primary aluminum ash. The main components are aluminum and aluminum oxides, and the aluminum content can reach 15% to 70%.After the primary aluminum ash is treated with aluminum extraction, the secondary aluminum ash is produced. The aluminum content in the secondary aluminum ash is generally 3-12%, and the rest is alumina, aluminum nitride, salts and fluoride.

The treatment, recycling and utilization of aluminum ash are mainly divided into two parts: the primary aluminum ash extraction and the secondary aluminum ash treatment; the primary aluminum ash extraction includes fried ash recovery method, rotary kiln treatment method, pressing recovery method, and cold ash crushing and screening recovery, etc., while the secondary aluminum ash is mainly harmless and resource-based utilization.

1.As a water purifier: Aluminum ash is treated by acid-soluble method to prepare solid polyaluminum chloride.

2.Production of brown corundum: anthracite coal is used as a reducing agent, iron shavings are used as a precipitating agent, and aluminum ash is used as raw material to produce brown corundum.

3.Alumina for synthetic inks: aluminum ash and aluminum-containing waste sulfuric acid can be used as raw materials to produce alumina for inks.

4.Preparation of alumina: React with ammonium bicarbonate by sulfuric acid method to generate ammonium aluminate precipitation and ammonium sulfate solution, evaporate and concentrate the ammonium sulfate solution to precipitate ammonium aluminum sulfate, and burn ammonium aluminum sulfate to obtain alumina powder.

XKJ Group is committed to the research of process technology for the treatment of hazardous waste of aluminum ash and the research and development of complete process equipment. It has a complete solution for the harmless and resource-based treatment of aluminum ash. Welcome to consult.