SIM卡提炼20万元黄金？含金量极低 提炼需专业许可

Core Viewpoint - A viral video claims that gold can be extracted from old SIM cards and electronic chips, suggesting that each SIM card contains 0.02 grams of gold, which has sparked public interest and speculation about hidden wealth in electronic waste [1][4]. Group 1: Gold Extraction Claims - The video showcases a process where 191.73 grams of gold is extracted from 2 tons of electronic waste, including SIM cards and other electronic chips [1][4]. - Some social media claims exaggerate the gold content in SIM cards, stating that each card contains 0.02 grams, while experts clarify that the actual amount is closer to 0.02 milligrams, a difference of 1000 times [5][8]. Group 2: Industry Insights - The precious metal recovery industry is well-established, with various electronic devices containing gold-plated coatings, but the actual gold content in items like SIM cards is minimal [5][8]. - Experts explain that gold is used in electronics to prevent oxidation of copper circuits, as gold does not corrode under normal conditions, making it a practical choice for enhancing the longevity of electronic components [8][9]. Group 3: Challenges of Personal Extraction - The process of extracting gold from electronic waste involves hazardous chemicals, such as aqua regia, which require professional knowledge and legal permits to handle [9]. - The costs associated with extracting gold from SIM cards are high, and the yield is often not economically viable for individuals, as the expenses can exceed the value of the gold extracted [9].