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.

Performance analysis of aluminum powder coating

1, the higher the purity, the better the corrosion resistance, it is known, aluminum with oxygen in the air role in the aluminum surface will produce a thin layer of dense natural oxide film, other than the metal oxide film generated fast and more thick, thereby preventing harmful gases in the air and moisture corrosion, play a protective role;

2, the corrosion resistance of aluminum is good, but poor mechanical strength, which to some extent, restricted the application of aluminum, so people in the aluminum adding an appropriate amount of magnesium, copper, zinc and other metals to produce various types of aluminum, high mechanical strength aluminum alloy, the mechanical strength of the aluminum greatly improved greatly expanded range of applications, although the mechanical strength aluminum alloy, but poor corrosion resistance than aluminum, so it is possible to corrosion due to oxidation. This need for powder coating on Aluminum Alloys to protect, aluminum for its proportion of small, easy processing, mechanical strength and other characteristics are widely used for many years building windows and doors, curtain wall and other products. ,

After powder coating, aluminum has a high corrosion resistance, color diversification, good surface texture and many other advantages, with different exterior house paint echoes to build a colorful buildings.