Electronic waste powder, asphalt mixture and its preparation method and conductive surface

Abstract

The invention belongs to the technical field of electronic waste powder and highway engineering asphalt pavement, and discloses electronic waste powder, asphalt mixture, a preparation method thereof and a conductive road surface. The electronic waste powder includes the following components by weight: 65% to 75% of polymer, 15% to 25% of conductive material, 2% to 4% of alumina, 1% to 2% of alkali metal, carbon dioxide Silicon 3% to 5%; in polymers, the weight ratio of plastic in electronic waste powder is 35% to 45%, and the weight ratio of rubber in electronic waste powder is 20% to 30%; Among the conductive materials, the weight ratio of copper in electronic waste powder is 5% to 8%, the weight ratio of silicon in electronic waste powder is 4% to 6%, and the weight ratio of iron in electronic waste powder is The weight ratio is 3%-5%, the weight ratio of aluminum in the electronic waste powder is 2%-4%, and the weight ratio of nickel in the electronic waste powder is 1%-3%.

Description

technical field [0001] The invention belongs to the technical field of electronic waste powder and highway engineering asphalt pavement, and in particular relates to electronic waste powder, asphalt mixture, a preparation method thereof and a conductive road surface. Background technique [0002] Electronic waste (WEEE) refers to electrical or electronic equipment that is discarded and no longer used, mainly including waste household appliances such as refrigerators, air conditioners, washing machines, and televisions, and obsolete products of electronic information products such as computers and mobile phones. Electronic waste has the characteristics of large quantity, high potential value, great harm, and difficult disposal. Electronic waste contains a large amount of common metals such as copper, iron and aluminum, plastics, rubber and trace amounts of rare and precious metals such as gold, silver and platinum that can be recycled, of which 65% to 75% are polymer material...

AI Technical Summary

Problems solved by technology

However, the above methods have their own shortcomings. For example, the chemical treatment method has a low leaching rate of precious metals inside the electronic components, and some metals and non-metals cannot be recovered. A large amount of waste liquid and toxic gas are emitted, causing serious harm to the environment; in addition to hydrogen halides, highly toxic dioxins and furan compounds are formed during the combustion process of the fire treatment method, which consumes a lot of energy and has a low recovery rate. Low, these methods are not suitable for promotion from the perspective of environmental protection and energy saving; while the mechanical treatment method is low in efficiency and expensive in manual operation, and is not suitable for large-scale promotion

[0004] In view of the early damage of asphalt pavement, rutting is still one of the main diseases of asphalt pavement. At the same time, in special areas (such as the alpine region of the Qinghai-Tibet Plateau) the temperature difference between day and night is large, resulting in the accumulation of temperature stress on the pavement and cracking of the pavement, which seriously affects the pavement. performance

Images