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A rapid analysis method for silver in copper anode slime

A copper anode slime and rapid analysis technology, applied in the direction of chemical analysis by titration method, can solve the problems of high labor intensity, environmental pollution, long analysis process, etc., to avoid high labor intensity, simple and fast method, and long analysis process Effect

Active Publication Date: 2017-12-01
大冶有色设计研究院有限公司
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Problems solved by technology

[0003] The purpose of the present invention is to provide an easy-to-operate rapid analysis method for silver in copper anode slime in view of the current silver analysis method with high labor intensity, long analysis process, and serious environmental pollution.

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  • A rapid analysis method for silver in copper anode slime
  • A rapid analysis method for silver in copper anode slime
  • A rapid analysis method for silver in copper anode slime

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Embodiment Construction

[0048] A rapid analysis method for silver in copper anode slime of this embodiment, after the copper anode slime sample is treated with saturated sodium hydroxide solution and potassium sodium tartrate solution, part of the coexisting elements in the sample enters the solution, and the filtrate is discarded after filtration. The precipitate was dissolved with nitric acid, and in the nitric acid medium, Ag + Than Fe 3+ to SCN - have greater affinity when Ag + After precipitation is complete, Fe 3+ with SCN - Combining the ferric thiocyanate complex that generates apricot red is the reaction end point, and the silver content can be calculated according to the volume of the standard potassium thiocyanate solution consumed; the method includes the following experimental conditions, sample processing, coexistence The accuracy experiment of element interference test and verification experiment result, in which:

[0049] 1. Experimental conditions

[0050] (1) Titration conditi...

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Abstract

The invention discloses a rapid analysis method for silver in copper anode slime. A copper anode slime sample is treated with a saturated sodium hydroxide solution and a sodium potassium tartrate solution, partial coexistence elements in the sample enter the solution, a filtrate is discarded after filtration, precipitates are dissolved in nitric acid, Ag<+> has larger affinity to SCN<-> than Fe<3+> in a nitric acid medium, after Ag<+> precipitates completely, Fe<3+> is combined with SCN<-> to produce an apricot pink ferric thiocyanate complex, a reaction endpoint is reached, and the content of the silver can be calculated according to the volume of a consumed standard potassium thiocyanate solution; the method comprises test conditions, sample treatment, a coexistence element interference test and an accuracy test for verifying a test result; the method is simple and convenient to operate, has the accurate and reliable test result and is applicable to analysis and detection of the sample in the electrolytic process.

Description

technical field [0001] The invention relates to the technical field of metal testing and analysis in the metallurgical industry, in particular to a rapid analysis method for silver in copper anode slime. Background technique [0002] With the continuous development of industry, the human demand for non-ferrous metals is increasing, and the world is facing the problem of scarcity of non-ferrous metal resources. Therefore, more and more people have begun to pay attention to the recycling of secondary resources. Copper anode slime is a high-value secondary resource containing a large amount of valuable metal elements, among which the effective recycling of valuable metal elements is of great significance to promote the utilization of renewable resources in the non-ferrous metal industry. Selenium steaming slag, anode slime, etc. are intermediate products of precious metal smelting. Currently, the methods for analyzing silver mainly include gravimetric method and titration metho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N31/16
CPCG01N31/16
Inventor 何梅胡军凯张征
Owner 大冶有色设计研究院有限公司
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