Method for rapidly measuring gold and silver in crude copper

Abstract

The invention discloses a method for rapidly measuring gold and silver in crude copper and relates to a precious metal testing analysis method, in particular to a method for rapidly measuring precious metals of gold and silver in the crude copper. The method is characterized by comprising the following steps in the measuring process: (1) dissolving a crude copper sample by acid to separate out copper to obtain filter residues; (2) then dissolving the filter residues by mixed acid of hydrochloric acid and nitric acid; (3) carrying out analytic determination of gold and silver by adopting an ICP-AES (inductively coupled plasma-atomic emission spectrometry). The method for rapidly measuring gold and silver in the crude copper, disclosed by the invention, is an analysis method of dissolving and separating a copper matrix by sulfuric acid, then directly dissolving the obtained filter residues by the mixed acid of hydrochloric acid and nitric acid and measuring gold and silver in the crude copper on the ICP-AES; the method does not adopt the fire assay enrichment and ash blowing operation, improves the working environment of workers and shortens the analysis process.

Description

technical field [0001] The invention discloses a rapid determination method for gold and silver in blister copper, relates to a precious metal testing and analysis method, in particular to a rapid determination method for precious metal gold and silver in blister copper. Background technique [0002] GB / T512.2-2009 stipulates that the analysis method of gold and silver in blister copper is: wet separation-fire test gold gravimetric method. Since this method uses fire test gold, the analysis results need to be added to pure copper with the sample The gold and silver with the same content in the furnace can be tracked and corrected in the whole process or the gold test slag of the first test can be corrected for the second test gold. The analysis process is long; The environment is tough. The gold and silver in blister copper is determined by using the lead-coated ashblowing method to filter the filter residue obtained after copper removal and direct ashblowing. Although this...

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Problems solved by technology

The gold and silver in blister copper is determined by using the lead-coated ash blowing method to filter the filter residue obtained after copper removal and direct ash blowing. Although this method omits the fire test gold smelting on the basis of GB / T512.2-2009 Steps, the result does not need to be corrected, but the operator still needs to perform ash blowing operation in front of the high temperature furnace

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