Waste circuit board Waste ic chip refining gold Decomposition Waste ic chip refining gold , first on the circuit board waste ic chip refining gold aluminum, copper coilDisassemble it by hand, and then use a tin stove to remove the undamaged integrated blocks from the circuit board for sale. The circuit board is then pulverized, preferably to separate the metal from the non-metal. Put the separated metal in the acid-resistant bucket, pour 9ML dilute nitric acid, dilute nitric acid can be matched by itself, the method is to add concentrated nitric acid to water, the ratio of nitric acid to water is 5:2, at this time will produce a violent reaction.
Base metals are separated by concentrated hydrogen peroxide sulfate; Extraction of high purity gold by high efficiency extractant and reverse extractant.
Step 5: Acid bath: Various things on the circuit board have been removed, if there is a gold-plated part of the circuit board, it will bePut into a strong acid solution; Step 6: Reduction: the gold in the strong acid is reduced to low-purity gold; Step 7: Heating refining: the low-purity gold is further purified to make higher-purity gold; Direction and use: Sale for industrial gold. Process: Extraction of copper.
Refining gold with nitric acid: Wear protective gear. Always wear a face mask, goggles and industrial gloves. Chemicals and acids are irritating to the skin and can burn through the skin in severe cases. The acid fog from the burning can also burn the eyes and cause nausea if inhaled. Place the circuit board in a glass container. It's better to use Corning> Can gold be extracted from a circuit board?
1, yes, especially on the connector of the circuit board, it is better to gold-plate treatment to prevent oxidation in the air and cause poor contact, this thing is called "gold finger". But the total amount of gold is very low, making it difficult to recover. More heavy metals are copper and tin, the former is present in all the circuit board conductive objects, the latter on the welding points.
2, it is true that most electronic products contain gold-plated components, so a certain amount of gold can often be extracted from these waste circuit boards, and the purity is relatively high, which is goldExcellent materials for recycling.
3. It's true! I thought it was a gimmick at first, but I found a good company to work with, and it really worked out and now I'm doing this full-time.
4. Research on the process of wet chemical extraction of gold from circuit board metal using concentrated hydrogen sulfate to separate base metal; Extraction of high purity gold by high efficiency extractant and reverse extractant.
The circuit board chips of mobile phones, computers, televisions and other electronic products have gold, but the composition is only how much. goldIt is used in many places on computer motherboards: IDE ports, PCI Express slots, PCI, AGP, and ISA, as well as other ports, jumpers, processor sockets, and DIMMs on older motherboards, which are often covered with a gold layer a few microns thick.
The pins of waste computer cpus contain gold at most to make more backward chips than advanced ones, because the accuracy of the gold-plating process is different, but it seems basically the same now. Among household appliances, including daily appliances, the gold content of computers is the highest, and small appliances include the gold content of these mobile phonesThe highest.
Gold iphone Where is the gold mainly hidden in the mobile phone? Mainly the mobile phone motherboard, the motherboard is the most expensive part of the entire mobile phone, and the mobile phone contains the most metal elements, and the gold is hidden in this small motherboard.
The main place where the cpu contains gold is the pin, the cap, the gold sheet on the surface of the silicon wafer. At the earliest, the higher the price, the more backward the process of the cpu containing gold! Because the more advanced the process, the smaller the silicon crystal, the smaller the cpu volume! Several high gold content cpus IBM's early power series, the Gold Shell.
Beijing Junzheng (300223) : The company is committed to developing independent innovation CPU technology and products in China, and has developed into a leading embedded CPU chip and solution provider at home and abroad. 2 Zhuo Sheng Micro (300782) : the leading brand of RF switch and RF low noise amplifier for smart phones in China. The company's RF front-end chips are used in the products of Samsung, Xiaomi, Huawei, Lenovo, Meizu, TCL and other terminal manufacturers.
Let's take Huawei Kirin 990 5G chip for example. It has a chip area of 1,131 square millimeters, soUp to 10.3 billion transistors are packed into a small space. It can be seen that the chip is composed of large-scale transistors, so strictly speaking, a single IGBT cannot be classified as a chip, but a power semiconductor device. Now generally speaking, IGBT chips are composed of IGBT power devices and many other things. The main job of IGBT is to control and transmit electrical energy.
Recycling of waste circuit boards contributes to resource utilization
PCB circuit board is an important part of electronic products, its role can not be ignored. When designing a PCB board, factors such as circuit layout, connection and signal processing need to be taken into account. Reasonable design can make the circuit run more stable and improve the overall performance of electronic products. In addition, discarded PCB circuit boards have a wealth of value andThe application potential can be fully developed through recycling, artistic creation, educational research and other ways.
The recycling process for used circuit boards is carefully designed to maximize resource reuse. First, through heating, components such as chips, capacitors, and polar tubes are extracted and sorted, and then resold to appliance manufacturers. The solder is then melted by heat and recycled. The gold-plated part is reduced to gold through an acid bath, while the copper is smelted through a blast furnace and eventually converted into high-quality metal raw materials.
1, a catty sim card can refine 2 grams of gold. The chip on a catty SIM can extract 2 grams of gold, the unit price of gold is 4148 yuan, so the gold value of a catty chip can be 8296 yuan, because 500 bank card chips are a catty, so the gold value of a chip is 64 yuan.
2, yuan/jin. 1 catty mobile phone card can refine 0.25 grams of gold, depending on the region, the price will vary. The chip of the mobile phone card is not gold. The gold contained in the mobile phone is generally located on the motherboard and the chip. But the amount is very small, a ton of mobile phones canTo extract 150 grams.
3, can refine 32K gold. Specific steps: 5 min hydrochloric acid and 5 min nitric acid mixed into "aqua regia"; Then just throw the SIM card in and wait a day; Finally, you can dump the "aqua regia" and get gold. SIM card (Subscriber Identification Module), also known as user identification card, smart card, GSM digital mobile phone must be installed with this card to use.
4.06 g. One kilogram of currency 0.25 to 0.3 grams, but if you want to withdraw should pay attention to,Degold powder washing gold plating is only 0.06 grams, the main gold content is the back of the 5 gold wires. Lightly toast the card, take the heart out and you'll see the back.
5, if you feel that the short message harassment I can let your dirty heart get abnormal abnormal satisfaction, then you continue to send it, I sympathize with you! Here's the good news: After heating the SIM card to more than 500 degrees, your phone bill will be paid in half. Try it now!! Furniture is wood, understand poetry is the scholar, everyone is thinking of money, see the news is stupid.
6, 【 Samsung GT-i8250】 networkNetwork system: TD-SCDMA, GSM. SIM card Specifications: Standard SIM card. Operating system: Android 3. CPU model: Marvell PXA920H 0GHz. CPU frequency: 0GHz single-core. ROM capacity: 4GB. RAM capacity: 512MB. Launch date: 2012. Screen size: 0 inches. Rear camera: 5 million pixels. Home screen resolution: 480X800.