[China Aluminum Industry Network] Aluminum ash is usually classified according to its morphology. For example, it is called aluminum slag or aluminum ash, especially secondary aluminum ash. After the metal aluminum is extracted from aluminum slag, it is ground by a ball mill and passed through. After sifting, the metal aluminum therein is sieved out to achieve metal aluminum extraction. The remaining aluminum ash has a small amount of metal aluminum. According to the refining method, two types of aluminum ash can be produced: one is the aluminum ash of the electrolytic aluminum liquid. The electrolytic aluminum liquid aluminum ash comes from pure aluminum liquid, and its composition is mostly aluminum oxide, aluminum nitride, and a small amount of fluoride. The second is aluminum alloy casting aluminum ash. Due to the presence of elements such as silicon, magnesium, copper, iron, and zinc in the aluminum alloy solution, the alloy aluminum ash contains various metal impurity elements and a small amount of fluoride.
For aluminum processing companies, aluminum ash is generally discarded directly or exported at a low price. However, as a dangerous solid waste, aluminum ash will be extremely polluted if it is discarded at will. In the past two years, the state has carried out strict supervision on this matter. Therefore, how to effectively use aluminum ash, reduce pollution, and increase the utilization rate have been the key research directions of many companies.
Zhengzhou Zhong Lv Environmental Protection New Material Co., Ltd. has devoted many years to specializing in research and management of aluminum ash treatment and comprehensive utilization technologies. The use of mineral processing, alumina smelting, chemical engineering, environmental protection and other multidisciplinary technologies to achieve the separation and use of aluminum and ash elements, first separate aluminum ash in ammonia, fluoride, slag agent, aluminum nitride and other substances, and then deal with the degree of activity is not The same alpha-alumina, beta-alumina, aluminum hydroxide and other substances, and then deep separation of aluminum, ash, magnesium, copper, iron, chromium, zinc and other elements, through the continuous R & D team in Zhengzhou Zhonglv company Efforts have finally been made to develop and develop aluminum ash treatment and comprehensive utilization technologies, and have obtained national invention patents (a kind of aluminum ash comprehensive utilization processing method, patent number:.X). Based on this technology, China National Green Materials Co., Ltd. will expand the test facility and join other companies in the construction of an industrial test production line that will perform key processes for the treatment and utilization of aluminum ash. According to the experimental results, through the harmless and comprehensive utilization of 200kg/h aluminum ash, and continuous and stable operation for 168 hours, the obtained aluminum ash treatment results meet the national environmental protection standards, and the recycled aluminum hydroxide and ammonia water meet non-ferrous metals. Industry raw material standards.
It is understood that the total investment of the project is 20 million yuan, and the aluminum ash processing capacity can reach 10,000 tons/year, and about 1,000 to 1,500 tons of metal aluminum scrap and 8,500 to 10,000 tons of aluminum hydroxide can be obtained, and nitrogen in aluminum ash can also be effectively recovered. . This separation method is not only applicable to the treatment and treatment of electrolytic aluminum ash, but also applicable to aluminum-processed aluminum ash and secondary aluminum ash with complicated composition and intractability.
At present, Zhengzhou Zhonglu Environmental Protection New Material Co., Ltd. has signed cooperation documents with electrolytic aluminum companies in Xinjiang, Shandong, and Gansu, and a regenerated aluminum company in Henan, etc., and has achieved a wide range of responses across the country to help harmlessly treat aluminum smelting waste slag. Recycling and recycling technologies have reached new heights.
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