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Method for determining contents of gold, platinum and palladium in high-silver high-platinum-palladium chemical slag

A platinum, palladium and chemical technology, applied in the field of non-ferrous metallurgy, can solve the problems of shortening the detection process, platinum and palladium dissolution loss, inability to effectively separate gold, etc., and achieve the effect of shortening the analysis process and shortening the detection process

Active Publication Date: 2020-06-26
JILIN JIEN NICKEL IND
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is: provide a method for measuring the content of gold, platinum and palladium in high-silver and high-platinum-palladium chemical slag, and solve the problem of precious metals in chemical slag. If the silver content is too high, especially if the silver content reaches tens of thousands of grams, the surface of the alloy particles after ash blowing will be rough and frosty, and the ductility will be poor, and the gold cannot be separated effectively; Gold content; the loss of platinum and palladium dissolution during gold separation needs to be corrected; in addition, a large amount of nickel chloride precipitates after the combination of the gold separation solution and the aqua regia solution, which affects the determination of the subsequent solution; at the same time, the detection process is shortened to ensure accurate determination of the precious metal content in the sample technical issues

Method used

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  • Method for determining contents of gold, platinum and palladium in high-silver high-platinum-palladium chemical slag
  • Method for determining contents of gold, platinum and palladium in high-silver high-platinum-palladium chemical slag
  • Method for determining contents of gold, platinum and palladium in high-silver high-platinum-palladium chemical slag

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The standard addition recovery rate of sample 1 is 99.1~101.9%, as shown in Table 1,

[0030]

[0031]

[0032] Table 1

[0033] The relative standard deviation (RSD) of sample 1 is 0.56%~1.54%, as shown in table 2,

[0034] project Au(ug / g) Pt(ug / g) Pd(ug / g) 1 526.1 1001 1999 2 520.5 1036 2000 3 513.2 1031 2002 4 503.4 1043 2008 5 511.2 1048 2009 6 513.1 1018 2019 7 520.3 1040 2025 8 523.2 1045 2027 average value 516.4 1033 2011 Relative standard deviation RSD(%) 1.44 1.54 0.56

[0035] Table 2

Embodiment 2

[0037] The standard addition recovery rate of sample 2 is 96.5%~108.3%, as shown in Table 3,

[0038]

[0039] table 3

[0040] The relative standard deviation (RSD) of sample 2 is 0.48%~2.47%, as shown in table 4,

[0041]

[0042]

[0043] Table 4

Embodiment 3

[0045] The standard addition recovery rate of sample 3 is 100.4~102.5%, as shown in Table 5,

[0046]

[0047] table 5

[0048] The relative standard deviation (RSD) of sample 3 is 0.37%~0.43%, as shown in table 6,

[0049] project Au(ug / g) Pt(ug / g) Pd(ug / g) 1 995.9 1989 2986 2 997.5 1991 2987 3 1003 1993 2989 4 989.9 2002 2995 5 993.2 1997 2996 6 998.7 1995 3006 7 996.5 1989 3012 8 1002 2001 3014 average value 997.1 1995 2998 Relative standard deviation RSD(%) 0.43 0.25 0.37

[0050] Table 6.

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Abstract

The invention discloses a method for determining the contents of gold, platinum and palladium in high-silver high-platinum-palladium chemical slag, belongs to the technical field of nonferrous metallurgy, and can determine the contents of gold, platinum and palladium in the chemical slag only by once fire assay enrichment, thereby greatly shortening the analysis process. By means of the method, the problems that due to the fact that the precious metal content in the chemical slag is too high, especially the silver content reaches tens of thousands of grams per ton, the surfaces of alloy particles are rough and frosted after ash blowing, ductility is poor, and gold cannot be effectively separated are solved; if the platinum-palladium content is greater than the gold content, the gold content cannot be accurately obtained by adopting a gold separation weighing method; during gold separation, platinum and palladium are dissolved and lost and need to be corrected; in addition, a large amount of nickel chloride precipitates are generated after the gold separating solution and the aqua regia dissolving solution are combined, and post-solution determination is influenced; meanwhile, the detection process is shortened, and the precious metal content in the sample is accurately determined.

Description

technical field [0001] The invention belongs to the technical field of nonferrous metallurgy, in particular to a method for continuously measuring the contents of gold, platinum and palladium in high-silver, high-platinum and palladium chemical residues. Background technique [0002] In the smelting of non-ferrous metals, the raw materials will contain a certain amount of precious metals. With the progress of the conventional production process, the base metals will be leached out successively through acid leaching, and the precious metals will be gradually enriched in this process. After the second acid leaching enrichment The content of precious metals in chemical slag is relatively high, but in the prior art, the chemical analysis method of copper anode slime is directly used for analysis and measurement. There are many problems in the analysis process, and satisfactory measurement results cannot be obtained. The specific problems are as follows: [0003] 1. The high cont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/73G01N31/16G01N1/34G01N1/40G01N1/44
CPCG01N21/73G01N31/164G01N1/34G01N1/4077G01N1/4044G01N1/44G01N2001/4088Y02P10/20
Inventor 李鲜红王英凯朱艳峰毕雪吕宝凤朱丽娜赵萍宋楠刘菲菲杜娟
Owner JILIN JIEN NICKEL IND
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