Minerals_Recycling and processing methods of aluminum scrap

Renewable aluminum has become increasingly prominent in the production of aluminum in major developed countries. The ratio of primary aluminum to recycled aluminum in developed countries has approached or exceeded 1:1. For this reason, the recycling and recycling of discarded Al has become a very important task for all countries in the world and has become an important industry.
However, the recovery and regeneration of aluminum alloys is a very complex technical work. The wide range of use of various aluminum products, the use of decentralized, how to collect, sort, and regenerate processing are all very complicated projects. Secondly, there are hundreds of alloys with different alloy compositions and properties in the world, and many of them contain mutually incompatible and incompatible components. How to use the most simple method, the lowest cost, and the most effective process to make the recycled Al regenerated components meet the requirements of the ideal alloy and the properties are satisfied. The technology that can achieve or near the original raw material level is the target of the industry in the world. .
At present, developed countries have formed a complete waste aluminum collection, management, and inspection system to adapt to the ever-expanding market demand. Developed countries have continuously introduced new technological innovation measures in their production, such as low-cost continuous smelting and processing technologies, making them low. The quality upgrade of scrap aluminum, etc., can use scrap aluminum to manufacture a large number of aluminum ingots for casting, die casting, rolling and master alloys. The largest ingot weight is 13.5 tons, including remelted secondary alloy ingots ( RSI) is used to make special plates for cans. The quality of the plates has reduced the weight of each can to only about 14 grams. Some recycled aluminum is also used in the manufacture of computer floppy disk drives.
However, China’s recycling and recycling of waste miscellaneous aluminum is not deepened to the point of view of the United States, Japan, and other developed countries. China’s largest and largest aluminum recycling company in Asia is the Shanghai Xinge Nonferrous Metal Co., Ltd. located in the outskirts of Shanghai. The company, although the company has two 50-ton smelting and stationary furnaces, a group of 40-ton fuel smelting and standing furnaces, and a 12-ton fuel rotary kiln, these 50-ton furnaces are not only China's largest reclaimed aluminum smelting furnaces, but also It ranks among the largest reclaimed aluminum smelting furnaces in Asia. However, even at the level of some ring measures and technology, even if the level of Xinge Company is at the leading position in China, it still belongs to the level of the foreign countries in the 1980s. As for some enterprises with small scale, low output and weak environmental protection measures, they still account for Most of the technical renovation and environmental protection facilities can be said to be difficult to implement.