Electronic waste, English E-waste or WEEE (Waste Electrical and Electronic Equipment), meaning abandoned electrical or electronic equipment, is precisely because of the boom of high technology brought this almost nonexistent waste decades ago . However, the rubbish is not entirely useless, "contains about 5 grams of gold in a ton of gold ore," said Joachim Beyer of Currenta, Germany. "Of the 1 ton of e-waste, This figure is 50 to 500 grams. " E-waste, as the "gold" of the plan When the black and white CRT into a color LCD high-definition screen, when the Pentium into a Core Duo, when the tape into MP3 files, once the hands of the key phone, may already have become iphone6s, or soon after People "kidney deficiency" iphone 6se? In dazzling upgrades, these old guys get shorter cycles from our hands to the dumpster. According to the report of ABI Research, the United States, about 53 million tons of e-waste were generated around the world in 2009. The United Nations Environment Program (UNEP) estimates that by 2020 this figure will be 200 million tons. According to a 2008 report by the US Environmental Protection Agency Solid Waste Office, about 3 million pieces of e-waste were produced in the same year alone in the United States alone. What is hidden behind these huge numbers? From the perspective of material composition waste electrical appliances: a computer about 23% plastic, 15% glass, 32% steel, 18% non-ferrous metals (non-ferrous metals) and 12% of the circuit of precious metals (gold, silver, platinum , Palladium, etc.). A ton of old cell phone also contains about 340 grams of gold. Today, when the old gold mined is depleted, gold is being harvested by gold digging. It has been as hard-pressed as meat scraps to be collected from the teeth. Recycling E-waste From this perspective, the gold mine is in the rubbish dump. Golden Nirvana i? A sandpiper? / Strong> Although e-waste is more expensive than gold, it's not that easy to extract gold from e-waste: Open a worn-out computer case or cell phone and look at the circuit board packed with dense circuits and components . It is hard to imagine what the device will be able to throw the colorful guy from this end into the other side, and the golden one will come out. But Current Corp. thought so, Mr. Bell said very easily: "I burned e-waste, putting rubbish in the rotary kiln from the front, and behind it was gold." The actual process is much more complex. The waste in their entire set of waste [burning equipment, first in a 12 m long, 3.5 m diameter and slightly inclined rotary kiln (how to look like a cement kiln) 600-1 000 ℃ high temperature incineration. The organic components (such as those green substrates) are completely oxidized, and the molten metal forms a solution with the remainder of the organic combustion. The melt flows to the bottom of the rotary kiln and is water-cooled to solidify into precious metals up to 99% pure. After further processing, gold can only "come back." When it comes here, it is only one-third of the entire installation, followed by thermal energy units and key soot cleaning devices. Through these two components, the toxic waste gas and dust generated by combustion can be safely and effectively separated without causing excessive pollution to the environment, and the heat released by the combustion of organic matter can be utilized to save fossil fuels. As a result, waste e-waste brought in addition to precious metals, as well as energy. Release Agent,Stearic Acid Amide,Cas 124-26-5,Slip Agent For Rubber Pvc Jiangxi Zhilian New Materials Co., Ltd , https://www.zhilian163.com