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Rapid determination method for trace gold, palladium and platinum elements in copper anode slime leachate

A copper anode slime and rapid determination technology, which is applied in the field of metallurgy, can solve problems such as difficulty in ensuring the accuracy of analysis results, detection limits of analysis and detection methods and matrix interference with precious metal element analysis, and inability to meet the production control and metal balance needs of precious metal elements, etc. , to achieve the effect of improving the timeliness of analysis and simplifying the operation process

Pending Publication Date: 2022-07-29
JINCHUAN GROUP LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the coexistence of trace amounts of precious metal elements and a large amount of copper-nickel matrix (Cu≥40g / L) in the copper anode slime external liquid, the detection limit and matrix interference of the analysis and detection method have always been troubled by the precious metals in the copper anode slime external liquid The difficulty of element analysis, the accuracy of the analysis results is difficult to guarantee, and thus cannot meet the production control and metal balance needs of precious metal elements in the copper anode slime leaching solution in the precious metal smelting process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] (1) Sample treatment, mix 5.0 mL of copper anode slime leaching solution with 5.0 mL of aqua regia and put it into a beaker with a capacity of 200 mL and heat it with an electric hot plate to make it evaporate to a volume of about 2-3 mL. Gold, palladium, platinum and other coexisting elements are completely dissolved. The cooled solution is placed in a 100mL volumetric flask A, and the volume is adjusted with water. Then, 5.0mL of the solution is removed from the volumetric flask A and placed in a 100mL volumetric flask B. The beaker needs to be rinsed with hydrochloric acid before use to avoid contamination.

[0017] From the analysis of the whole analysis process, although the mass spectrometry is more suitable for the nitric acid medium, the precious metal elements are the most stable in the hydrochloric acid medium. The whole experimental process also confirms this, so the hydrochloric acid medium is determined.

[0018] (2) Select the standard solution, select 200...

Embodiment 2

[0023] (1) Sample treatment, mix 5.0 mL of copper anode slime leaching solution with 5.0 mL of aqua regia and put it into a beaker with a capacity of 200 mL and heat it with an electric hot plate to make it evaporate to a volume of about 2-3 mL. Gold, palladium, platinum and other coexisting elements are completely dissolved. The cooled solution is placed in a 100mL volumetric flask A, and the volume is adjusted with water. Then, 5.0mL of the solution is removed from the volumetric flask A and placed in a 100mL volumetric flask B. The beaker needs to be rinsed with hydrochloric acid before use to avoid contamination.

[0024] (2) Select the standard solution, select 200 mL of the reference solution, and the density of gold, palladium and platinum in the reference solution is 50 μg / L, respectively. In a 500 mL volumetric flask, dilute to volume with hydrochloric acid to obtain a first-level mixed solution, then pipette 10.0 mL of the first-level mixed solution into a 200-mL vol...

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Abstract

The invention provides a rapid determination method for gold, palladium and platinum in a copper anode slime leaching solution, and establishes an analysis method for determining three elements of gold, palladium and platinum in the copper anode slime leaching solution by inductively coupled plasma mass spectrometry. According to the method, the interference of high-copper and high-arsenic matrixes in the solution to be detected is overcome by utilizing the advantage of low detection limit of the mass spectrometer, and the method is high in analysis speed, high in accuracy, economical, environment-friendly and simple and convenient to operate, has very good application and popularization values, and completely meets the rapid and accurate analysis requirements of a copper anode slime production field. Meanwhile, successful use of ICP-MS is beneficial supplement and improvement of a precious metal analysis method, equipment, a method and technical support are provided for subsequently solving the bottleneck problem restricting precious metal micro and trace analysis, and the method has good application prospects and popularization value.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and relates to a rapid determination method for trace amounts of gold, palladium and platinum elements in a copper anode slime leaching solution. Background technique [0002] Copper anode slime leaching solution is a kind of external solution rich in Cu, As and other elements produced in the process of copper anode slime pressure leaching, which carries trace amounts of precious metal elements such as Au, Pd, Pt, etc., in order to control the production in time. Process parameters to reduce the loss of precious metals in the pressure leaching process, it is necessary to quickly and accurately analyze the Au, Pd, and Pt in the copper anode slime leaching solution. Due to the coexistence of trace amounts of precious metal elements in copper anode slime external dosing solution and a large amount of copper-nickel matrix (Cu≥40g / L), the detection limit and matrix interference of its analysis and ...

Claims

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Application Information

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IPC IPC(8): G01N27/626G01N1/28
CPCG01N27/626G01N1/28
Inventor 刘同银周文茜陈云峰张学欢吕刚
Owner JINCHUAN GROUP LIMITED
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