Method for separating metals and nonmetals in waste cables through supersonic waves

Abstract

Disclosed is a method for separating metals and nonmetals in waste cables through use of supersonic waves. The method includes the following steps: 1) cleaning collected waste cables; 2)classifying the cleaned cables; 3) straightening the classified cables and putting the classified cables in order and feeding the cables into a cutting machine so that the cables are cut into sections; 4) feeding the sectioned cables into a grinding device for grinding processing; 5) feeding the ground cable sections into a refrigerating device so that the cables are refrigerated for 6 hours; 6) casting the refrigerated cable sections into an ultrasonic device, adding 10-20-time amount of water, immersing the cables at the temperature of 40-60 DEG C for 0.5 to 2 hours and carrying out ultrasonic processing twice at the temperature of 40-50 DEG C, ultrasonic power of 500W and sound energy density of 0.3W/cm<2> for an acoustic processing time of 5s to 5min; 7)putting the ultrasonic-processed cable sections into a separation device for separation until the metals and nonmetals are acquired. The method for separating the metals and nonmetals in the waste cables through use of the supersonic waves reduces the possibility that metals may be ground to be power-shaped so that loss of metal resources is reduced; the method is high in adaptability to the diameters of cut cables so that sufficient separation of the metals and the nonmetals in the cables is ensured; and the quality of metal products is high.

Description

technical field [0001] The invention relates to the technical field of resource recovery, in particular to a method for separating metal and non-metal in waste cables by using ultrasonic waves. Background technique [0002] During my country's "Eleventh Five-Year Plan" period, industries such as electric power, railways, rail transit, energy, construction, communications, ships, and automobiles still maintained relatively large investment scales, and my country's wire and cable industry is in a period of rapid growth. With the rapid development of our country and the world's social economy, the production and consumption of cables has become the second largest industry in my country after the automobile industry. The rapid development of the wire and cable industry will inevitably bring about the elimination of a large number of waste wire and cables. The composition of the cable includes a conductor (valuable metal materials such as copper and aluminum), an insulator, and ...

AI Technical Summary

Problems solved by technology

Although the pyrolysis method has greatly improved air pollution compared with incineration technology, its metal quality is similar to that of incineration, and it belongs to high-temperature treatment technology, which has higher requirements for equipment sealing and tail gas treatment.

The chemical method is to dissolve the plastic, rubber and other substances on the outer layer of the wire and cable through a solvent, thereby exposing the metal substance, but this method will produce a high concentration of organic waste liquid, and it is currently difficult to harmlessly treat and safely discharge it.