Interdigital electrode dielectrophoresis separation system for recovering precious metal

Abstract

The invention relates to an interdigital electrode dielectrophoresis separation system for recovering precious metal. The system comprises three working sections which refer to an input section, a separation section and an output section respectively, wherein the three working sections are coaxially and fixedly arranged in sequence through flanges in the vertical direction; a material input pipe and a water inlet pipe are arranged on the input section; an interdigital electrode is arranged in the separation section; and the output section is provided with a precious metal output pipe and an impurity output pipe respectively. According to the system, unseparated precious metal particles in precious metal wastes are acquired by unique high selectivity and high controllability of a dielectrophoresis principle in physical chemistry to fulfill the aims of recovering the precious metal to the maximum extent and reducing environmental pollution caused by the precious metal to the minimum; and the system belongs to a brand new environment-friendly, efficient and continuous separation process for separating and recovering the precious metal in tailings and garbage, is environment-friendly and energy-saving, and contributes to further separation of the precious metal in precious metal lean ores or precious metal tailings in China.

Description

technical field [0001] The invention belongs to the technical field of separation, and relates to the separation and extraction of precious metals such as gold, in particular to an interdigitated electrode dielectrophoresis separation system for recovering precious metals. Background technique [0002] Precious metals, such as gold, silver, platinum, etc., often remain in the tailings or waste (such as electronic waste) in the form of tiny (diameter micron or less than micron) particles in a free state, and their concentration is very low (often less than a few hundred milligrams per t), and exist as ultra-thin flakes with uneven geometric shape and unequal size distribution. This specific existence mode cannot be effectively separated by conventional separation methods. If the separation method of the original (rich) ore is used to extract the precious metals remaining in the tailings, due to the low particle concentration, the required investment is large, the separation e...

AI Technical Summary

Problems solved by technology

In order to obtain a sufficiently high electric field strength, under the premise of providing the same high voltage, the distance between the two electrodes limits the flow rate and the size of the DEP device, which greatly limits the application of DEP amplification.

[0009] Through the search, no relevant published patent documents have been found

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