Copper recovery _ East in mind renewable resources (certified) _ Long copper recovery by Dongguan Chang Ping Tung Kee provide renewable resource recycling. Dongguan Chang Ping Tung Kee renewable resource recycling (www.dongji8.com) is specialized in the "whole plant equipment for recycling, electronics recycling inventory, metals recycling, metal recycling, plastic recycling" of the enterprise, the company of "honesty, hard service "concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Xue Wendong. 50 to 60 years of the last century, in order to address the serious shortage of social goods, the Government has strongly advocated thrift, waste recycling, and establish a more comprehensive waste recycling systems. Since the 1990s, in order to achieve recycling, reduce environmental pollution, the state has launched a series of preferential policies, renewable resource recycling industry developed rapidly. At present, more than 5,000 renewable resource recycling business process engineering copper recovery, recycling outlets 160,000, recovered more than 3,000 plants, employing 140 people, the annual amount of renewable resource recycling more than 50 million tons of copper recycling companies, the total annual recycling values ??close to 50 billion yuan. After the board of old mobile phones, computers destroyed into small pieces, add concentration of 15% to 70% copper recovery of nitric acid solution, water bath and stir. After the waste material and the substrate surface foil off high copper recovery, heating was stopped, cooled, poured upper solution, Cu, Ag and Pd, etc. may be separated by the addition of sodium chloride extracted, oxalic acid, ammonia, etc. contained in the solution. A bottom container for a mixture of gold foil and the substrate after the peeling off the mixing body flush, flush stopped when visible foil substrate slower sedimentation rate than the matrix quickly settle to the bottom of the container, and the gold foil suspended gradually sinking in the water, this pouring water in the container, the gold flowing out, the substrate remaining in the container. Achieve the recovery of gold, gold from scrap purity of about 99.9%.