E-waste to extract gold technology

Gold extraction technology will explain in detail how to extract gold, how to extract gold, how to extract gold from mobile phone motherboards, how to extract gold from circuit boards, how to extract gold from circuit boards, how to extract gold from computer motherboards, how to extract gold from mobile phones, and how to extract gold from cpu.

1. E-waste is all kinds of discarded electronic products.

The update rate of home appliances such as mobile phones and computers is getting faster and faster, and many old home appliances are discarded casually. Experts say that these discarded e-wastes still have good use value. For example, some old mobile phones, computers and other parts can be picked out of gold-containing components to extract gold. In 1 ton of electronic boards, 130 kilograms of copper, 20 kilograms of tin, and 0.45 kilograms of gold can be separated. "E-waste" has become an industry that hides huge profits.

2. Recovery value and status in production:

The utilization value of precious metal secondary resources is increasing, mainly because:

(1) Humans have produced a large amount of precious metals (gold, silver, platinum, palladium, rhodium, iridium)

(2) The resources of precious metals are scarce, especially gold and silver industry reserves are less.

(3) The precious metal content is much higher than that of the original ore, generally several hundred times or more.

3. Gold production, consumption and main application areas:

Gold is the earliest metal developed and utilized by human beings. Because it mostly exists in natural metal condition, it is easy to pick, choose, and process. At the same time, it has a lovely golden yellow color, which can be preserved for a long time and remain unchanged for a long time. The jewelry industry has the largest demand for gold, accounting for about 85% of production and processing on average, followed by the electronics industry with about 6% and 6.5%, and the dental industry with about 2%, aerospace, aviation and other industries, and medals, medals, government currency, Gold is an important hard currency, and all countries have a large amount of reserves.

4. Sources of e-waste:

(1) Gold-containing electronic components, video recorders, record players, measuring instruments, analyzers, computers and other instruments and some contacts, leads and circuit boards also contain gold.

(2) All kinds of gold-containing alloys, the content of gold in the alloys is very high. There are also many low-gold alloys that are more easily forgotten after use for the gold in them, and are only recycled as general metals.

(3) The gold content of various types of waste gold plating solutions varies greatly.

(4) Jewelry waste, anode slime, batteries, solder alloys, dental alloys, gold-plated devices and all devices involving the use of gold, such as chemical, electronics, medicine, electroplating and jewelry, contain gold.

The gold content in e-waste is much higher than that of the original ore, generally hundreds of times more. The recovery from it is much lower than the extraction cost from the original ore, and the economic benefit is very obvious. The grade of electronic waste waste generally ranges from 800 to 2000 grams per ton, that is, 0.8 to 2 grams of gold can be extracted per kilogram of waste.