Comprehensive resources treatment method of waste circuit board

Abstract

The invention relates to a method to extract copper from abandoned breadboards and to use remain substance comprehensively recycling by combining techniques of microbe, metallurgy and materials. Based on principles of microbial wet-process metallurgy, Cu is extracted from abandoned breadboards by using iron protoxide thiobacillus. At the same time, the retained solid is recycled to realize the comprehensive treatment of abandoned breadboards. The entire recycled treatment of abandoned breadboards is realized, which guarantees the entirely clean produce without discharging waste water, waster residue and waste gas into the environment. This method has much strongpoint including little investment, low cost, high recovery rate of metal, non-pollution and green zoology etc. It benefits the society, economy and environment.

Description

technical field

[0001] The invention belongs to waste resource treatment technology, and relates to a method for extracting metal copper from waste circuit boards by combining technologies such as microorganisms, metallurgy, and materials, and comprehensively reusing other remaining materials. Background technique

[0002] Microbial hydrometallurgy is a method of leaching metals from ores or recovering (removing) metals from water by using certain microorganisms or their metabolites to oxidize, reduce, dissolve, absorb (adsorb) minerals and elements, etc. .

[0003] Use microbial leaching and oxidation to leach lean ore, waste ore, tailings and Daye slag containing dozens of precious and rare metals such as copper, gold, silver, manganese, nickel, chromium, etc., to prevent the loss of mineral resources .

[0004] In 1955, S.R.Zimmerley, D.G.Wilson and J.D.Prater applied for the patent of bioheap leaching for the first time, and entrusted this technology to Kennecott Coppe...

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