A gold concentrate cyanide leaching tailings washing system

By adopting a combined washing mode of filtration followed by countercurrent in the tailings washing system of gold concentrate cyanide leaching, and utilizing a filter press and a two-stage thickener, the problems of large footprint and large washing water volume of thickener equipment in medium and large-sized cyanide plants are solved, thus achieving efficient tailings washing.

CN224530982UActive Publication Date: 2026-07-21SHANDONG GOLD SMELTING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANDONG GOLD SMELTING CO LTD
Filing Date
2025-08-06
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

In the countercurrent washing process of thickeners in medium and large-sized cyanide plants, there are problems such as high washing stages, large footprint, large washing water volume, large replacement operation volume, and frequent cabinet exit.

Method used

The system adopts a combined washing mode of "filtering first and then countercurrent". The filter press is used to fully separate the high-concentration precious liquid from the filter cake. The filter cake moisture content is reduced by backwashing and blowing through the filter press, which reduces the number of washing stages and the amount of washing water added in the thickener. The system is combined with two-stage thickener for countercurrent washing.

Benefits of technology

It significantly reduces the number of washing stages and water volume in the thickener, improves washing efficiency, reduces equipment footprint and operational complexity, while retaining the thickener's buffering capacity.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224530982U_ABST
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Abstract

The utility model discloses a kind of gold concentrate cyanidation leaching tailings washing systems, and the ore slot is connected with the ore pipe of filter press by feed pump;Backwash water tank is connected with backwash pump, and backwash pump is connected with gas-liquid inlet pipe by switch valve;Air compressor is connected with the gas-liquid inlet pipe by switch valve. The liquid outlet end of gas-liquid inlet pipe is connected with the washing water inlet of filter press. Water tank is connected with the squeezing pipe of filter press by water pump. Filter press is connected with precious liquid pool by liquid discharge pipe. Stirring tank is respectively connected with stirring tank barren liquid inlet pipe and slurry outlet pipe;Thickener is connected with slurry outlet pipe, and thickener is also connected with overflow pipe and thickener barren liquid inlet pipe. It solves the problems, such as high washing stage number, large floor area, large washing water volume, large replacement operation processing capacity, frequent cabinet output, etc. in countercurrent washing link of medium and large scale cyanidation plant. At the same time, the system retains the advantage of large buffer capacity of thickener washing process.
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