With the development of China's electronics industry, the phase-out of used electronic products, household appliances, etc. has become increasingly large. At the same time, a large number of waste circuit boards have been produced. At the same time, we can also see that some people recycle waste circuit boards. So what is the use of these old circuit boards? Follow the specific Xiao Bian together to find out. In today's electronic era, smart appliances are completely filled with our lives. Each smart appliance or non-intelligent appliance is controlled by a circuit board, and each circuit board has its own lifespan, that is, the retirement period, and some appliances are directly affected by external influences and directly become obsolete appliances. . This directly led to the production of waste circuit boards. Circuit board hazards In the world, every day, circuit board manufacturers have several billion circuit boards shipped. In everyday life every day, there are probably hundreds of millions of tons of waste circuit boards piled up. Once the circuit board has accumulated, it will endanger our ecological environment and human health. No matter which circuit board will cause organic pollution to society. There are PCBA board above the electronic components will also give pollution, the most important pollution is metal pollution, especially tin, lead, cadmium and other heavy metals, directly endanger human health. Professionally, waste printed circuit boards are a mixture of fiberglass-reinforced resin and various metals. They are typical electronic wastes. If they are not properly handled and disposed of, they will not only cause significant loss of useful resources, but also contain cadmium and A large number of teratogenic, mutagenic and carcinogenic substances, such as brominated flame retardants, will cause serious harm to the environment and human health. At present, waste iron recycling methods generally use direct burial, incineration, water washing, and pyrolysis. However, toxic substances are released, which can cause serious secondary pollution of the air or soil environment. The national environmental protection policy also does not allow it to do so. Or to limit these processing modes. The best method for recycling waste circuit boards in the world is the physical method. The most notable feature of this method is the advantages of small environmental pollution, high overall utilization rate, and large added value. It is the development trend of electronic waste disposal in the future; The disadvantage is that the treatment cost is slightly higher than the incineration or washing recovery. Due to the toughness of waste circuit boards, which are mostly plate-like, it is difficult to separate metals from non-metals through one-time crushing, and it contains many types of substances and the separation and decomposition process is complex. These characteristics determine that recycling of waste circuit boards has A certain degree of difficulty. In e-waste, although the recycling of circuit boards is difficult, it has a very high economic value. The taste of metal in the circuit board is equivalent to dozens of times to hundred times of the metal grade in ordinary minerals. The content of metal is as high as more than 40%. The most is copper, and gold, tin, nickel, lead, silicon, etc. There is no lack of rare metals, and the rich metal content in nature is usually only 3-5%. In addition, the non-metallic waste residue of used circuit boards can be used as building materials. At the same time, solder and plastics on waste circuit boards are important resources that can be recycled. Therefore, the establishment of more and more circuit board recycling plants provides the ultimate destination for a large number of waste circuit boards, and it can also better protect the environment and its own health. There are various chips, capacitors, and polar tubes on the circuit board that can be recycled. At the same time there are gold, tin solder, copper skeleton and other metals on the board. The main process of its recovery is as follows: 1. Process A: Recycle various kinds of chips, capacitors, and polar tubes. The first step: heating: Place the circuit board on the coal stove and heat it until it softens; Step 2: Extract: Extract various chips, as well as electronic components such as capacitors and polar tubes; The third step: classification: classification of various chips and electronic components; Flow direction and use: Responsive to electrical plants in Shenzhen and Dongguan, directly used to produce new products; 2. Process B: Extracting solder. Step 4: Heating: The circuit board, from which various chips and electronic components have been removed, is placed on a stove insulated with iron or pan to continue heating. The above solder such as tin melts and drops onto a pan or iron plate, which is collected, melted, and sold. 3. Process C: Extraction of gold: (mainly in the suburbs, currently this type of production is extremely subtle) Step 5: Acid Bath: Various things on the circuit board have been removed. If the circuit board has gold plating, put it into a strong acid solution. Step 6: Restore: Restore gold in strong acid to low purity gold; The seventh step: heating and refining: the low-purity gold further purification, made of a higher purity of gold; Flow Direction and Use: Sold as industrial gold. 4, Process D: Extract copper. Step 8: Collect: Collect all kinds of copper-containing circuit boards from which all accessories have been removed; Step 9: Transshipment and smelting: transfer to Qingyuan for blast furnace smelting and smelting into low-quality copper alloys; Flow direction and use: Sold to smelters in Zhuzhou and other places for separation, smelting and purification.
Function description
The socket is ordinary converter,with
two output 5V2A power USB power supply at the same time,can be very
convenient in use electrical appliances and recharge the equipment at
the same time,such as digital products like Iphone Ipad,MP3,MP4 etc.The
charge apply to full range of international AC output,no-load power
consumption less than 0.3W,with short circuit,overload,over-voltage
protection,can be convenient for your life and save more energy
Timer Control Time Adgustment
1.Press the power switch 1 time,the 1HOUR LED will light on.The Timer into ON mode,USB and control socket output ON .
2.Continuously press the power switch
the LED light on,the Countdown mode and LED light on will cycle change
from 1HR,2HR,4HR,6HR,8HR,10HR.
3.Choose you need countdown time
mode,the mode LED will lighto on,start countdown until countdown time
finish,the control output and USB change to OFF
4.Then the countdown is start,The Time indicate LED will from high to low auto change until Countdown finish off.
Failure analysis:
1.check whether the power supply connection is good
2.check whether the USB cable is loosen
Warning Note:
1.Use indoor and dry location ONLY
2.The load max does not exceed 15A 3600W
3.This product does not convert voltage please do not miss use DO NOT exceed the maximum loading of 3600 Watts 15A
4.Always have earth connection for safety reason
5.If in doubt please consult with a qualified electrician
USB Charger Socket, Fast Charge USB Wall Socket, USB Plug Socket, USB Socket Charger, Socket USB charger NINGBO COWELL ELECTRONICS & TECHNOLOGY CO., LTD , https://www.cowellsockets.com
