Method and Application of Simultaneously Determination of Gold, Silver, Platinum and Palladium Content in Low Matte Nickel

A technology of matte nickel and content, applied in the field of precious metal determination, can solve the problems of inability to measure multiple elements at the same time, high lead oxide dosage, low accuracy rate, etc., and achieve low detection limit, wide detection range and convenient detection

Active Publication Date: 2021-12-10
北矿检测技术股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] ①Small precision and low accuracy;
[0004] ②The amount of lead oxide is high;
[0005] ③ Cannot measure multiple elements at the same time

Method used

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  • Method and Application of Simultaneously Determination of Gold, Silver, Platinum and Palladium Content in Low Matte Nickel
  • Method and Application of Simultaneously Determination of Gold, Silver, Platinum and Palladium Content in Low Matte Nickel
  • Method and Application of Simultaneously Determination of Gold, Silver, Platinum and Palladium Content in Low Matte Nickel

Examples

Experimental program
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Effect test

Embodiment 1

[0107] The present embodiment measures the content of gold, silver, platinum and palladium in low matte nickel, and concrete process is as follows:

[0108] (1) Take 15g of low-matte nickel powder and put it in a tall beaker, add 20mL of nitric acid (1+7), add 60mL of concentrated sulfuric acid after dark green copper nitrate appears, cover the watch glass, and place the beaker on a high-temperature electric furnace Steam until paste, remove and cool to room temperature, add water and sodium chloride solution, add filter pulp, boil, wash watch glass and cup wall with warm water, and filter with medium-speed quantitative filter paper after cooling slightly.

[0109] (2) Transfer all the sediment to the filter paper, wash the cup wall and the sediment with warm water. The wiped filter paper and the filter paper loaded with sediment were placed in a clay crucible, put into an assay furnace, and ashed from room temperature to 500°C to obtain the first ashed product.

[0110] (3) ...

Embodiment 2

[0116]This embodiment measures the content of gold, silver, platinum and palladium in low-matte nickel. The difference from Example 1 is that 10 g of low-matte nickel powder is taken in step (1), and the crucible is placed at 850 ° C in step (4). In the gold electric furnace, the temperature was raised to 1100°C within 50 minutes, the ash dish was preheated at 985°C for 20 minutes in step (5), and the temperature of the ash blower was 885°C; the solution 2 to be tested was obtained in step (7), and other steps were the same as in Example 1 , which will not be repeated here.

Embodiment 3

[0118] This embodiment measures the content of gold, silver, platinum and palladium in low-matte nickel. The difference from Example 1 is that 20 g of low-matte nickel powder is taken in step (1), and the crucible is placed at 950 °C in step (4). In the gold electric furnace, the temperature was raised to 1100°C within 60 minutes, the ash dish was preheated at 975°C for 20 minutes in step (5), and the temperature of the ash blower was 880°C; the solution 3 to be tested was obtained in step (7), and other steps were the same as in Example 1 , which will not be repeated here.

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Abstract

The invention provides a method and application for simultaneously measuring the contents of gold, silver, platinum and palladium in low-matte nickel, and particularly relates to the technical field of precious metal determination. A method for simultaneously measuring the content of gold, silver, platinum and palladium in nickel matte, comprising step A: sequentially adding nitric acid and sulfuric acid into nickel matte to dissolve to obtain a first solution; step B: adding soluble chlorine to the first solution After the salt is filtered, the first precipitate is obtained, and the first precipitate is ashed to obtain the first ashed product; step C: the first ashed product is uniformly mixed with lead oxide, flux and reducing agent to obtain the to-be-melted product, and the to-be-melted product is Melting, cooling and separation after melting to obtain lead buttons and slag; step D: ash-blowing the lead buttons to obtain granules, dissolving the granules to obtain the solution to be tested; step E: measuring the solution to be tested on an inductively coupled plasma emission spectrometer Gold, silver, platinum and palladium content. The method has the advantages of convenient detection, high sensitivity, low detection limit and good stability.

Description

technical field [0001] The invention relates to the technical field of precious metal determination, in particular to a method and application for simultaneously determining the contents of gold, silver, platinum and palladium in low-matte nickel. Background technique [0002] Existing methods for measuring the content of precious metals in low nickel matte, including fire assay gold method, gravimetric method or atomic absorption method, mainly have the following defects: [0003] ①Small precision and low accuracy; [0004] ②The amount of lead oxide is high; [0005] ③It cannot measure multiple elements at the same time. [0006] In view of this, the present invention is proposed. Contents of the invention [0007] One of the purposes of the present invention is to provide a method for simultaneously measuring the content of gold, silver, platinum and palladium in low ice nickel, so as to alleviate the problems of low precision, low accuracy, high amount of lead oxide ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/73G01N1/38
CPCG01N21/73G01N1/38
Inventor 史博洋王皓莹汤淑芳刘秋波
Owner 北矿检测技术股份有限公司
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