In the aluminum recovery process, CFF ceramic foam filter aluminum filtration is the last purification process close to smelting and casting. Previously, the furnace was refining, lifting, and degassing outside the furnace. Although 60% to 80% of the inclusions and gases have been removed, the finer impurities are still dispersed in the melt, and new inclusions will be generated during the refining and flow process. Before casting, these fine phases must aggregate, grow, and separate.
Compared with other purification methods, the CFF filtration method has become the preferred process for terminal impurity removal due to its advantages of low energy consumption, simple operation, low labor intensity, high impurity removal efficiency, and low pollution.
In the current production process of some foundries, the content of aluminum in the waste slag is generally 40% to 80%. The aluminum recovery from the waste slag should be paid attention to, and the foundry can recycle aluminum.
Aluminum has excellent properties and is hardly corroded during use. It has a large amount of use in civil and military applications. It has strong recyclability and is of great significance in the recovery of secondary resources.
The fundamental role of aluminum in ecological transformation and environmental protection is a fact. The production of primary aluminum requires stable energy: in order to obtain aluminum from scrap/recycling, 5% of the energy required to produce primary aluminum is sufficient.
CFF aluminum filtration is important for aluminum scrap recycling. CFF aluminum melt filtration can reduce the impurities and inclusions in the melt before the melt is cast and rolled. The quality of aluminum melt treatment will affect the quality of cast-rolled products, and further, affect the quality of subsequent processed products. Commonly used aluminum melt filtering devices include plate ceramic foam filter equipment, deep bed filtering equipment, and tubular filtering equipment.