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Electrochemical gold dissolving device and method

A dissolving device and electrochemical technology, applied in the direction of electrolysis process, electrolysis components, electrodes, etc., can solve the problems of long production cycle, generation of nitrogen oxides, tedious nitrate removal steps, etc., and achieve great economic and social benefits, reduce Effect of equipment chemical corrosion and process simplification

Inactive Publication Date: 2015-01-21
CHANGZHOU YIJIN ENVIRONMENTAL PROTECTION TECH
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Problems solved by technology

There are two traditional production methods, one is aqua regia dissolved gold method, this method has cumbersome nitrate removal steps, and nitrogen oxides will be produced in the production process, there is a certain degree of environmental pollution
The second is the ceramic tank electrolysis method, which uses a bisque-fired ceramic tank as a barrier tank to prevent gold ions from being discharged and precipitated at the cathode and enriched in the electrolyte. However, this tank has the following disadvantages: high voltage, high resistance, and high liquid temperature. Long production cycle, low current efficiency, etc.

Method used

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  • Electrochemical gold dissolving device and method
  • Electrochemical gold dissolving device and method
  • Electrochemical gold dissolving device and method

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Embodiment Construction

[0023] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.

[0024] Any feature disclosed in this specification (including any appended claims, abstract and drawings), unless expressly stated otherwise, may be replaced by alternative features which are equivalent or serve a similar purpose. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

[0025] Such as figure 1 , figure 2 and image 3 As shown, the gold electrochemical dissolving device includes an electrolytic cell 4, a power supply, an anode 1, a negative electrode 2, a pump and an ion exchange membrane 6, and the electrolytic cell 4 is divided into a cathode chamber 8 and an anode chamber 9 by an ion exchange membrane 6, so The bottom of each electrode chamber is provided with an outlet 5, the outlet 5 is equipped with ...

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Abstract

The invention discloses an electrochemical gold dissolving device and method. An ion exchange membrane electrolytic process is taken as a core technology, the electrochemical gold dissolving method adopting double membranes and double cathode rooms is adopted, a ruthenium iridium titanium-coated basket is taken as an anode, a ruthenium iridium titanium-coated net is taken as a cathode, hydrochloric acid is taken as electrolyte and aqua regia is not used, so that a nitrate removing process is cancelled, process flow is greatly simplified, chemical corrosion on equipment is reduced and environmental pollution is lowered. Besides, an ion exchange membrane is adopted, so that gold dissolved out on the anode can be prevented from entering the cathode region and separating out again on the cathode, and thus, the production efficiency is improved, the energy conservation and emission reduction of production are realized, and great economic benefits and social benefits can be produced.

Description

technical field [0001] The invention relates to the technical field of gold regeneration, refining and deep processing, in particular to a gold electrochemical dissolution device and a method thereof. Background technique [0002] Gold electrolytic refining is an important production method for crude gold purification and has been most widely used. There are two traditional production methods. One is the aqua regia solution gold method. This method has cumbersome steps of removing nitrate, and nitrogen oxides will be produced during the production process, which will cause certain environmental pollution. The second is the ceramic tank electrolysis method, which uses a bisque-fired ceramic tank as a barrier tank to prevent gold ions from being discharged and precipitated at the cathode and enriched in the electrolyte. However, this tank has the following disadvantages: high voltage, high resistance, and high liquid temperature. Long production cycle, low current efficiency,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C1/20C25C7/04C25C7/02
CPCC25C1/20C25C7/02C25C7/04
Inventor 范义春王琪杨雨佳李久云
Owner CHANGZHOU YIJIN ENVIRONMENTAL PROTECTION TECH
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