Feature news

Recycling of gold from electronics

 Recycling of gold from electronics

With over 300 tonnes of gold used in electronics each year, end-of-life electronic equipment offers an important recycling potential for the secondary supply of gold. With gold concentrations reaching 300-350 g/t for mobile phone handsets and 200-250 g/t for computer circuit boards, this “urban mine” is significantly richer than what is available in primary ores.

However, the “mineralogy” in scrap products is much different than in the conventional ores in a gold mine: Up to 60 different elements are closely interlinked in complex assemblies and sub-assemblies, and this requires specialised metallurgical processes with extensive offgas treatment to recover gold and a wide range of other metals cost effectively and in an environmentally sound way. Moreover, the logistics to “excavate” and “haul” the scrap products to the concentrator and further to the smelter are much more challenging than in the primary supply chain. Currently, only a small portion of old products is collected and directed into state-of-the art recycling chains. Significant improvements are needed here to fully utilise this secondary metal resource.

The importance of the gold content of scrap electronics to the economics of recovery of gold and many other valuable metals is not always appreciated and this impacts on the “design for recycling” approach in selecting materials for new products

Learn more »

Recovering Gold Finger from Computer SCRAP

Recovering Gold Fingers from Computer SCRAP Gold Fingers - How to Recover Gold from Electronic Scrap If you recall, when scrapping computers and other electronic equipment, we encounter a lot of peripheral cards which has Gold plated male slot contacts, i.e. the “fingers”


Computer Gold Fingers
When scrapping computers you will often come across wonderful gold encrusted components. (In reality, they are only gold plated.)

These gold components are, despite appearances, not “ripe” with gold. Yes, refining gold fingers is easier than refining ore, but that doesn’t mean it is “full” of gold. It will take hundreds of pounds of computers to get even close to an ounce of gold.
If you have the time and patience to collect about ten of pounds of these gold fingers, 
Each 1kg of gold fingers usually has 1-4 grams of gold.


Example video Recovery Gold Finger from Circuit board computer scrap
Learn more »

Gold recovery memory SD card adapter micro, miniSD, microSD scrap



 Rapid global technological development has led to the rising production of electronic waste that presents both challenges and opportunities in its recycling. In this review, we highlight the value of metal resources in the printed circuit boards memory SD card adapter micro, miniSD, microSD commonly found in end-of-life electronics, the differences between primary (ore) mining applications and secondary (‘urban’) mining, and the variety of metallurgical separations, in particular those that have the potential to selectively and sustainably recover gold from waste memory SD card adapter micro, miniSD, microSD scrap.




Is it profitable to recycle gold from electronic devices? Yes, Its profitable to recycle gold from electronic devices because it makes your outdated electronics so valuable even after they've reached the end of their life cycle. The best part is that extracting these latent valuable assets from recycled electronics



Learn more »

How to Extract Gold from Computer Parts & Electronics



Are you’re looking at opening a small yet profitable business that would start paying rich returns almost immediately? If yes, then I would suggest you try a business to extract gold from electronics and computer parts. As you would surely know, gold is a precious metal whose prices usually rise over a period of time.

Example demonstration video

Actually, recovering gold from computer parts isn’t a simple, home-based business. Nor should you even attempt doing so at home because it involves chemical processes. But if you can open a small workshop, it’s possible to extract gold from various computer parts and start making money.

Computer Parts with Gold

There’re quite a few computer parts that contain gold. I’ll list them for you. However, since these are different parts, you’ll also required different processes to recover gold.


Computer parts that contain gold include

 

Motherboard processors

Hard drives

CPU

RAM

CD & DVD drives

Additionally, computer parts also contain silver – which is another precious metal and of course, copper, which is commonly used for connectors and wiring.


As I mention earlier, since different parts of computers require different ways to recover gold, let’s see some of the processes you can use.


Extract Gold from Electronics & Computer Parts

Most of these processes are complex. Hence, you’ll need proper training to extract gold from computer parts. And of course, you’ll require a license too because it involves buying various chemicals that aren’t available off the shelves.


Gold Cyanidation

The most common way of recovering gold from computer parts is known as Gold Cyanidation. It’s also known as the CN process or the MacArthur-Forrest process. And since it involves the use of cyanide, a highly toxic chemical, the process can be done only at labs or workshops that have necessary permits and clearances from the government.


To extract gold with the CN process, you’ll first have to separate the metal items in a CPU, Motherboard and other computer parts that contain gold. Later, these scrap pieces have to be washed with a moderate strength acid solution to remove plastic, rubber, epoxy and composite.


When you have the metal part clean and exposed, follow the CN process at your workshop or lab. The gold comes in the form of an assay containing Potassium Cyanide. This assay has to be further purified using a mix of Nitric Acid, Hydrochloric Acid in the right proportions, to create a solution known as Aqua Regia.


Gold dissolves easily in Aqua Regia while the Potassium Cyanate assay separates swiftly. The process is a bit risky because it involves highly concentrated acids and cyanide fumes- both of which are potentially harmful to health, if you don’t take proper precautions.


Aqua Regia Process

It’s also possible to directly extract gold using the Aqua Regia process, provided you’re ready to settle for a little lesser quantity. The CN process allows you to recover up to 98 percent of the gold from computer parts.


In stark contrast, the Aqua Regia process enables you to recover  percent and 99.99 percent of the gold only. The acid mixture reacts quickly with gold and causes a small drop in its volume.


Clean the computer parts with golds, remove all outer covering and drop the pieces into a glass trough containing Aqua Regia.


These parts and the metal alloys with gold dissolves in the mixture. Upon neutralizing Aqua Regia, you’ll find the gold residue along with those of other metals. The gold residue can be purified to extract 99.9 percent 24-Carat gold.


Ordinary Burning

This isn’t exactly the way to recover gold. However, you can sell the char for a lot of money since it contains gold.


Remove all parts of a computer that contain gold and burn them in a large metal barrel. You’ll be able to recover only the charred pieces or chars from the ashes since they’re made of metal.


Usually, professional gold extractors will weigh the char volume, estimate the amount of gold and pay for completing half the process. However, they’ll buy the char only if it’s clean and free of residues of any other material. Hence, you may have to burn the pieces several times to get pure char.


Recovering Gold from Mobile Phones

The above processes are also useful to extract gold from mobile phones and other discarded electronics including remote controlled toys. 


License to Extract Gold

Here it’s important to bear in mind that recovering gold from computer parts and mobile phones can be done only by qualified metallurgists and other professionals. This isn’t a business for the unqualified.


Before you enter the business, make sure you have proper licenses for operating a gold recovery business and possession of hazardous chemicals.



In Conclusion

As you can see, there’s a lot of money in extracting gold from computer parts and electronics. However, this business is for qualified and experienced people only.

Learn more »

Gold price today

Gold price today






2





Learn more »

Copper wire recycling Bare bright copper cable scrap






Hello my friends Copper Wire Recycling
Important Things You Should Know About Copper Cable Recycling
Copper is a non-ferrous metal, meaning that it's a metal that is not derived from iron. It is commonly used in electrical wires and pipes for plumbing in its purest form, without any other metals or alloys. Demand for copper is increasing, commensurate with its usage today, thus, recycling copper can generate profit for you. The price you'll receive for copper will be based on what the copper was used for and its condition.

 Another common recycling equipment for copper is copper wire/cable stripping machine. Copper wire stripping machine is especially suitable for stripping thick wires and cables of single-strand or multi-strand. More labor-saving and less energy -consumption. The popular cable stripping machine can process wire/cable with diameter from 1-90mm. Copper wire recycling Bare bright copper cable scrap. scrap bare bright copper.


Copper facts you might not know
Did you know copper is nearly 100 percent recyclable? More than half of the copper consumed in the U.S. is from recycled scrap.

Almost 80 percent of copper produced in the world is still in use, and it can continue to be recycled without any changes to its properties. In fact, it retains 95 percent of its original value.

It’s also worth mentioning that copper should never be burned in an open fire. By processing the following scrap through a quality distributor, you minimize your impact on the environment for the betterment of the communities in which you live and work
Learn more »

How Much Gold is in Smartphones and Computers?



How Much Gold is in Smartphones and Computers?

Most people picture copper when they think about how electricity is conducted, probably because it’s the most common conductor. Silver is actually the best conductor, followed closely by gold. Copper is cheaper than precious metals, but it’s also much slower in transporting electrons than its glamorous siblings. In the world of computing and communications, speed is more important than cost, so copper remains relegated to construction and pennies.
And as fast a conductor as silver is, it corrodes or tarnishes easily whenever it comes in contact with water — even with humid air. Corrosion is to electrons what fresh road tar would be to Olympic runners.
Gold, on the other hand, is highly corrosion-resistant. So, while it’s not as fast as silver, it doesn’t fall apart like silver and is many times faster than copper.
There is intrigue brewing in the electronics industry, though. Some manufacturers are looking at how quickly people upgrade their electronic devices to learn whether using gold is necessary.
If consumers replace their devices faster than silver can break down, electronics companies may decide to depose gold as the ruler of conductors to fatten their margins. Why pay to install high-quality materials when so many buyers crave novelty more?
Were this trend to take hold, devices would have shorter life spans, which would stifle resale markets and, not coincidentally, increase the flow of unwanted goods to recyclers.

Uses of Gold in Computers

Gold is used in many places in the standard desktop or laptop computer. The rapid and accurate transmission of digital information through the computer and from one component to another requires an efficient and reliable conductor. Gold meets these requirements better than any other metal. The importance of high quality and reliable performance justifies the high cost.
Edge connectors used to mount microprocessor and memory chips onto the motherboard and the plug-and-socket connectors used to attach cables all contain gold. The gold in these components is generally electroplated onto other metals and alloyed with small amounts of nickel or cobalt to increase durability.

How much gold is in a smartphone?

To learn more about gold and how it is removed from discarded devices,

Uses of Gold in Electronics

The most important industrial use of gold is in the manufacture of electronics. Solid state electronic devices use very low voltages and currents which are easily interrupted by corrosion or tarnish at the contact points. Gold is the highly efficient conductor that can carry these tiny currents and remain free of corrosion. Electronic components made with gold are highly reliable. Gold is used in connectors, switch and relay contacts, soldered joints, connecting wires and connection strips.
A small amount of gold is used in almost every sophisticated electronic device. This includes cell phones, calculators, personal digital assistants, global positioning system (GPS) units, and other small electronic devices. Most large electronic appliances such as television sets also contain gold.

One challenge with the use of gold in very small quantities in very small devices is loss of the metal from society. Nearly one billion cell phones are produced each year, and most of them contain about fifty cents worth of gold. Their average lifetime is under two years, and very few are currently recycled. Although the amount of gold is small in each device, their enormous numbers translate into a lot of unrecycled gold.
Learn more »

Metal Melting Point Temperature

Metal Melting Point Temperature

We have the melting points in Fahrenheit and Celsius of most common metals listed here. We do not carry all of these metals, but provide them as reference information.
The melting point (or, rarely, liquefaction point) of a solid is the temperature at which a sustance changes state from solid to liquid at atmospheric pressure. At the melting point the solid and liquid phase exist in equilibrium. The melting point of a substance depends on pressure and is usually specified at standard pressure. When considered as the temperature of the reverse change from liquid to solid, it is referred to as the freezing point or crystallization point.

Metal Melting Point Temperature
Symbol
c° Celsius
F° Fahrenheit
Aluminum
Al
659
1218
Aluminum Alloy
463 - 671
865 - 1240
Aluminum Bronze
600 - 655
1190 - 1215
Antimony
630
1170
Beryllium
1280
2350
Beryllium Copper
865 - 955
1587 - 1750
Bismuth
271.0
520.0
Brass (85 Cu 15 Zn)
Cu+Zn
900-940
1652-1724
Brass, Red
1000
1832
Brass, Yellow
930
1710
Bronze (90 Cu 10 Sn)
Cu+Sn
850-1000
1562-832
Cadmium
321
610
Cast Iron
C+Si+Mn+Fe
1260
2300
Carbon
C
3600
6512
Chromium
Cr
1615 - 1860
3034 -3380
Cobalt
1495
2723
Copper
Cu
1083
1981
Cupronickel (Copper-Nickel Alloy)
1170 - 1240
2140 - 2260
Gold
Au
1063
1946
Hastelloy C
1320 - 1350
2410 - 2460
Hydrogen
H
-259
-434.2
Incoloy
1390 - 1425
2540 - 2600
Inconel
Ni+Cr+Fe
1393 - 1430
2540 - 2620
Iridium
2450
4440
Iron
Fe
1530
2786
Iron, Ductile
1149
2100
Iron, Gray Cast
1127 - 1204
2060 - 2200
Iron, Wrought
1482 - 1593
2700 - 2900
Iridium
2450
4440
Lead
Pb
327
621
Magnesium Alloy
349 - 649
660 - 1200
Magnesium
Mg
650 - 670
1200 - 1240
Manganese
1244 - 1260
2271 - 2300
Manganese bronze
865 - 890
1590 - 1630
Mercury
-38.86
-37.95
Molybdenum
2620
4750
Monel
1300 - 1350
2370 - 2460
Nickel
Ni
1452
2646
Niobium (Columbium)
2470
4473
Osmium
3025
5477
Palladium
1555
2831
Phosphorous
P
44
111
Platinum
1770
3220
Plutonium
640
1180
Potassium
63.3
146
Rhenium
3186
5767
Rhodium
1965
3569
Ruthenium
2482
4500
Selenium
217
423
Silicon
Si
1420
2588
Silver
Ag
961
1762
Silver, Sterling
893
1640
Sodium
97.83
208
Stainless Steel
Cr+Ni+Mn+C
1363
2550
Steel, High Carbon
Cr+Ni+Mn+C
1353
2500
Steel, Medium Carbon
Cr+Ni+Mn+C
1427
2600
Steel, Low Carbon
Cr+Ni+Mn+C
1464
2700
Tantalum
2980
5400
Tin
Sn
232
448 - 450
Thorium
1750
3180
Titanium
Ti
1795
3263
Tungsten
W
3000
5432
Uranium
1132
2070
Vanadium
1900
3450
Zinc
Zn
419
786
Zirconium
1854
3369
Learn more »

Gold from CPU Intel Pentium III Xeon





Hello, friends
Today I have an Intel Pentium III Xeon CPU.
The processors can boost multi-processing server performance by more than 30% versus existing systems using the Pentium III Xeon processor. Intel Pentium III Xeon family is a family of high-performance processors for high-end workstations and servers. introduced in March of 1999. I think the CPU will have a lot of gold when looking at the size and is High performance CPU Unfortunately, my Intel Pentium III Xeon CPU has a little gold at the connection point with the Gold Fingers cpu socket. And there is no gold wire inside the cip cpu. Work experience will teach us and do not despair.
Computer motherboard and other electronic circuit boards can also contain rich gold content made up of gold-plated circuit traces, edge fingers, connectors, Integrated Circuits, transistors, & memory chips. There is very little profit from extracting the gold content found in most computer chips and electronic components yourself unless you have significant quantities of them to be processed. Refining Gold & other precious metals (including silver, palladium & platinum) from CPU's & electronics is typically not profitable unless it's done professionally and in large quantities on a large scale; when processing just a few items the cost is often higher than the value of the gold that is reclaimed. More importantly, the process of refining gold involves working closely with hazardous materials including nitric and hydrochloric acids, as well as Mercury, and should only be performed safely by experienced Gold refiners.
Learn more »

gold recovery from cell phone




Hello friends, Today I am going to take a breakdown of the components of old mobile phones that have gold.

Socket Sim is a good piece of gold plated. You can use the clamp to separate this part. For a gold-plated keypad, you may need a gold stripping. For touch screen phones, you may not find a keypad. And do not get gold in this piece. You have to observe. The gold will be stacked on the back. In some cases, you may find gold chips in their electrical circuits. That's good For gold miners. In gold-rich ore deposits, there are concentrations of gold at one or two parts per million, That equates to 1g or 2g per tonne. And the idea that 41 handsets contain 1g of gold stems from a UN report on electronic waste. a tonne of old phones (weighed without their batteries) yields about 300g of gold. But the business case may not be as clear as the commissioner claims. At current gold prices, the amount in your handset is worth less than £1 ($1.67). Ic Chips are components that have gold wire inside. You may use a hot air gun to do it like me, or use pliers to separate it out. May have to use force And please be careful of safety Use various protective equipment. When you separate the devices Of mobile phones As the example I show You can extract gold. According to the methods I have presented in the last video. To learn more. #GoldRecoveryCellPhone #RecoveryCellPhone #GoldCellPhone
Learn more »

How to make pure gold easy from gold alloy


Hello, friends Today i have How to make pure gold easy from gold alloy. Gold recovery use nitric acid.
It is a method of making pure gold as in the past and is popularly used in ancient times Up until now. Extraction of gold by smelting is done with metallic mix gold. Scrap gold, jewelry gold, with gold components for more than 25%. Not suitable for metal gold plated surfaces. Ratio Gold alloy 1 Copper 1 Lead 2 1. Melt Metal all together. The copper melt first. put the gold and lead. homogeneous melt. 2. Pour the melted gold into the water. broken down into smaller ones. To make it easier to use nitric acid to dissolve the metal is not gold. Nitric acid mixed with water, ratio 1 to 1 Boil nitric acid with 80 Celsius Boil until no air bubbles. Clean the gold powder with hot water or bring to a boil. Dry gold powder In some cases. If gold is mixed evenly in the alloy and at a low enough concentration, you can use plain nitric acid to dissolve away impurities. However, if the gold is more pure (or is an external plating), what actually happens is that the nitric acid tries to dissolve everything, but the gold blocks it from coming through. In that case, you purify an outer layer, but the internal layers are not pure because they are protected by an insoluble layer of gold. To fix this, we can add hydrochloric acid to the nitric acid (so the gold is also dissolved) and then selectively precipitate out the gold. Thank you very much #GoldNitricAcid #GoldAlloy
Learn more »

โพสต์แนะนำ

How to recycle gold and silver from cpu computer scrap Old CPU Scrap Gold Value

How to recycle gold and silver from cpu computer scrap  Old CPU Scrap Gold Value youtube Subscribe to this ►►► https://goo.gl/9...