Aluminum ash, as a by-product of the aluminum processing industry, has complex properties and potential environmental risks. Henan Zhengkuang Machinery Co., Ltd. is exploring the characteristics of aluminum ash and proposing scientific and reasonable disposal methods in order to achieve the harmlessness, reduction and resource utilization of aluminum ash and promote the sustainable development of the aluminum processing industry.
1. Analysis of the characteristics of aluminum ash
Although aluminum ash is not strongly acidic, the aluminum nitride inside it will react chemically when it meets water to generate ammonia (NH₃) and form an alkaline solution with a pH value of about 8 to 10. This pH range does not meet the definition standard of solid waste corrosiveness (pH≥12.5 or ≤2.0), so aluminum ash is not corrosive. However, the large amount of ammonia released by the reaction of aluminum ash with water not only poses a threat to the environment and human health, but may also cause damage to the ecosystem.
In addition to ammonia, aluminum ash also contains toxic substances such as fluoride and chloride. These substances can leach into the environment under certain conditions, exceeding the safety limit, showing the characteristics of leaching toxicity. Based on the above characteristics, aluminum ash is included in the "National List of Hazardous Wastes", and its reasonable disposal has become an important issue facing aluminum processing companies.
2.Environmental disposal strategy
In the face of the potential risks of aluminum ash, it is crucial to take effective harmless treatment measures. At present, the recycling technology of aluminum ash is constantly improving, aiming to improve resource utilization and reduce environmental pollution. For example, aluminum ash can be used as a slag-making agent for steel, a covering agent for electrolytic aluminum tanks, a cement additive, a grinding material, a fertilizer component, and a raw material for the printing industry, which not only reduces the cost of aluminum processing companies, but also creates new economic value.
However, my country's aluminum slag recycling and processing technology is still in its early stages, and most companies still use the traditional model of manual sorting and direct sales after cooling. This method is inefficient, wastes resources seriously, and poses a threat to workers' health. With the tightening of national environmental protection policies, this extensive treatment method will gradually be eliminated.
3.Technological innovation and future prospects
Henan Zhengkuang Machinery Co., Ltd., a high-tech enterprise, is committed to the research and development of advanced aluminum ash processing equipment and processes, such as aluminum ash ball mills, aluminum ash rotary kilns, etc. These equipment can effectively improve the recovery rate and utilization rate of aluminum ash and reduce environmental pollution. Against the backdrop of increasingly severe global energy shortages and environmental pollution problems, the aluminum processing industry is facing unprecedented challenges and opportunities. By following the principles of harmless, reduced, and resource-based disposal, aluminum ash can not only be transformed into valuable resources, but also promote the green transformation of the entire industry.
The proper disposal of aluminum ash is not only an urgent need for environmental protection, but also the key to the sustainable development of the aluminum processing industry. Through technological innovation and policy guidance, we are expected to achieve the effective utilization of aluminum ash, reduce its impact on the environment, and contribute to the construction of a green and low-carbon industrial system.
