Facing the increasingly severe environmental situation, the disposal of aluminum ash has become the focus of the industry. Aluminum ash is rich in very valuable non-metallurgical grade alumina, which is a relatively good substitute for refractory materials, cement building materials, steel refining agents, and ceramic products. good material. Due to the low content of aluminum and aluminum in the secondary aluminum ash metal, complex impurity components, high processing costs, and difficulties in comprehensive utilization, the current disposal method has huge environmental risks, and standardized management, disposal and utilization are urgently needed. Controllable environment-friendly treatment technology expands its resource utilization.
In view of the fact that the current characteristics of regional concentrated development of aluminum processing in my country are becoming more and more obvious, a large-scale aluminum ash comprehensive treatment plant will be established in the future to centralize the processing of aluminum ash in the region, so as to realize the transformation from "low-efficiency and decentralized utilization" to "high-efficiency and large-scale utilization" in the past. It is the only way for the development of the industry. With the increasingly stringent environmental protection policies and regulations, enterprises urgently need economical, safe and environmentally friendly aluminum ash disposal technology.
Aiming at the feature that secondary aluminum ash is rich in a large amount of alumina resources and is accompanied by impurities such as active components, soluble salt and fluoride, ZK CORP adopts the process route of "multi-stage continuous enhanced hydrolysis leaching + high-value directional conversion" to dispose secondary aluminum ash, so as to promote the deep dissociation of active components and efficient leaching of salt components in secondary aluminum ash and realize the full quantitative utilization of gas, liquid and solid components.