[China Aluminum Industry Network] Zibo Haihui Engineering Design Consulting Co., Ltd. has achieved major breakthroughs in its treatment technology for aluminum ash “zero†emissions after nearly ten years of trials, research, and development, and has recently been fully launched on the market. Stainless Steel Angle Seat Valve Stainless Steel Angle Seat Valve,Sanitary Angle Seat Valve,Piston Angle Seat Valve,Steam Pneumatic Angle Seat Valve ZHEJIANG KINKO FLUID EQUIPMENT CO.,LTD , https://www.kinkoflow.com
Aluminum ash arises from the melting process of all aluminum, such as aluminum electrolysis and aluminum (including recycled aluminum) processing. The sources can be divided into aluminum ash produced during the aluminum electrolysis smelting process, aluminum ash during the aluminum smelting process, and aluminum ash during the processing of recycled aluminum. As the largest electrolytic aluminum country in the world with high capacity and output, China's electrolytic aluminum, aluminum processing, and recycled aluminum are estimated to have more than 3 million tons of aluminum ash per year, plus years of storage and burial. The quantity has become more and more ten million tons.
Aluminum ash is prone to produce high-risk chemicals such as ammonia, hydrogen fluoride, and cyanide during its production and disposal. Due to the lack of social, environmental, and economic benefits, China's aluminum ash processing is still at a relatively primitive stage. The reality is that a considerable part of aluminum ash is buried or thrown away without treatment. The useful components of aluminum ash have not been effectively utilized, but they have also seriously polluted the environment and are incompatible with the concept of green development today.
The new edition of the “National Hazardous Waste List,†issued on August 14, 2016 and jointly issued by the Ministry of Environmental Protection, the National Development and Reform Commission, and the Ministry of Public Security, lists aluminum ash discharged from non-ferrous metal aluminum smelting as a toxic hazard. Waste and flammable hazardous wastes. This certainty and orientation has pushed the handling and comprehensive utilization of aluminum ash to the cusp of the storm. The problem of aluminum ash, especially secondary aluminum ash (the remaining part after aluminum ash is extracted from aluminium) has reached the point where it cannot be handled, and its urgency is extremely imminent. .
Zibo Haihui Engineering Design Consulting Co., Ltd. is a private high-tech enterprise that is committed to aluminum industry and fluorine chemical technology research and development, investment consulting, engineering design, and production line transformation. On the basis of comprehensive, systematic and in-depth investigations, through experiments and research, and fully absorbing and drawing on the comprehensive utilization technology of aluminum ash in China and foreign countries, a new, new process for comprehensive utilization of aluminum ash with “zero†emissions has been introduced. Applied for a patent (a method of comprehensive utilization of aluminum ash, patent number:.5). The technology has been applied to an electrolytic aluminum plant in Shandong, which has significant economic and environmental benefits.
The technical characteristics of this project are: Firstly, the aluminum, fluorinated salt, and halogenated salt in the aluminum ash have been successfully recovered and the alumina has returned to the electrolytic cell; second, the fluoride generated during the aluminum ash treatment has been properly disposed of. , Chlorides, nitrides and other harmful gases; Third, the technology has been verified by factory experiments.
Due to its unique ideas, the project has a short process, investment, and high efficiency. A production line that handles 10,000 tons of aluminum ash twice a year, the project construction investment is less than 10 million yuan, and the annual profit can reach more than 8 million yuan, and investment in all projects can be recovered within more than one year of production.
Industry experts commented that this technology has a leading level at home and abroad. With the breakthrough of the "zero" emission technology of aluminum ash and its full launch on the market, this technology will surely help China and even the world aluminum industry achieve new heights in energy conservation, emission reduction and comprehensive utilization with its unique advantages. (Jiao Zhanzhong)
Aluminum ash "zero" emission treatment technology has achieved major breakthrough