Regeneration and scrap processing methods

Recycled aluminum in the major developed countries in the production of aluminum increasing prominence . Developed countries, the possession of primary aluminum and aluminum recycling ratio is close to or exceeds 1:1 . For this reason, the Al scrap recycling has become the world attaches great importance to the work , and has become an important industry.

However , Aluminum Alloys recycling and regeneration is a very complex technical work , using a variety of wide range of aluminum products , the use of decentralized , how to recycle concentration, classification , again to achieve regeneration process and so is very complicated huge project . Second , around the world, alloy composition , hundreds of different properties of the alloy , wherein the alloy constituent elements of many mutually exclusive , are not compatible. How the easiest way , at the lowest cost , most efficient process the waste Al regenerating ingredients satisfactory or alloy requirements, performance meet the use, quality can reach or near native material levels of recycling technology is the world of the industry to pursue goals .

Developed countries has formed a sound mixed aluminum scrap collecting, managing , sorting systems, to adapt the expanding market demand, developed countries continue to introduce new production technology innovations , such as low-cost continuous smelting and processing technology, the low- miscellaneous scrap grade aluminum upgrade process, etc. , mixed with scrap aluminum has been able to mass-produce for casting, die casting , rolling and for the regeneration of the master alloy ingots with a maximum weight of 13.5 tons of ingots , including ingots remelted secondary ( RSI) for the manufacture of cans special sheets, each sheet quality has enabled the weight of cans down to only 14 grams, some recycled aluminum is also used to manufacture computer floppy disk drive frame.

But our country waste recycling aluminum complex concepts and knowledge in extent , but did not deepen into the United States, Japan and other developed countries to the point , China's largest and Asia's largest aluminum recycling business is located in the outskirts of Shanghai Shanghai Sigma Metals Limited company, which although there are two sets of 50 tons of smelting furnace , a group of 40 tonnes of fuel oil of smelting furnace ; 12 tons of fuel oil a rotary kiln , furnace not only these 50 tons of recycled China's largest aluminum melting furnace, and among the Asia's largest secondary aluminum melting furnace ranks. However, in some ring measures the level of technology , even the new grid company level in the domestic leading position, but it is still a foreign level of the eighties , as a number of small-scale, low yields, poor environmental practices of business or accounting most , technological innovation and environmental protection facilities in the implementation can be said to be difficult.