Circuit board precious metal recycling
Circuit board precious metal recycling refers to the process of extracting gold, silver, palladium, platinum and other precious metals from waste circuit boards by using equipment or processes. The purpose of circuit board precious metal recycling is to use valuable resources in waste circuit boards, reduce environmental pollution, save energy, and improve economic benefits.
There are many methods for recycling precious metals from circuit boards, which are mainly divided into two categories: physical methods and chemical methods. The physical method refers to the method of crushing, pulverizing and sorting waste circuit boards by using mechanical equipment, and then separating metal and non-metal by using high-voltage electrostatic or gravity winnowing and other principles. The chemical method refers to the method of dissolving the metal in the waste circuit board by using chemical reagents such as acid, alkali or cyanide, and then using precipitation, electrolysis, extraction and other methods to purify the metal.
There are many kinds of equipment for recycling precious metals from circuit boards, mainly depending on the recycling method and process. Generally speaking, physical recovery equipment includes crushers, pulverizers, sorters, electrostatic sorters, etc. Chemical recovery equipment includes reaction tanks, dissolution tanks, precipitation tanks, electrolytic cells, extraction towers, etc.
The price of equipment for recycling precious metals from circuit boards varies according to the type, scale, performance, brand and other factors of the equipment. Generally speaking, the price of physical recycling equipment is relatively low, while the price of chemical recycling equipment is relatively high. According to some quotations on the Internet, the price of physical method recycling equipment is about tens of thousands to hundreds of thousands of yuan, and the price of chemical method recycling equipment is about hundreds of thousands of yuan to several million yuan.