Method for measuring content of nickel in ferronickel

A technology of nickel content and nickel-iron, which is applied in the preparation of test samples, material analysis by observing the influence of chemical indicators, and analysis by making materials undergo chemical reactions, can solve the problems of long cycle time, inability to detect, Not suitable for factory production testing and other issues, to achieve accurate measurement results

Inactive Publication Date: 2013-01-16
PANGANG GROUP JIANGYOU CHANGCHENG SPECIAL STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This technology eliminates any unwanted element like iron from measuring how much Ni has been added by analyzing metallic materials containing it. It uses artificial standards instead of pure metal or some special chemicals for this analysis. By doing these techniques quickly and accurately we are able to determine whether certain components have high amounts of nitrogen (N) present within them without actually adding another material called cobaltose).

Problems solved by technology

The technical problem addressed by this patented technology relating to reducing smelters' cost while maintaining their ability to produce high quality metallic materials at competitive prices involves finding alternative solutions that can replace expensive raw material without compromising its performance or usability during manufacturing processes.

Method used

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  • Method for measuring content of nickel in ferronickel
  • Method for measuring content of nickel in ferronickel
  • Method for measuring content of nickel in ferronickel

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0045] First, weigh a certain amount of ferronickel sample (accurate to 0.00001g) for the test, and weigh the sample according to Table 1.

[0046] Table 1

[0047] Nickel content range (%)

Sample weight (g)

≥1.00～2.00

2.00

＞2.00～7.00

1.00

＞7.00～15.00

0.50

＞15.00～25.00

0.30

＞25.00～38.00

0.20

＞38.00～85.00

0.10

[0048] Place the weighed ferronickel sample for the test in a 600mL beaker, add 20mL of nitric acid with a concentration of 64% and hydrochloric acid with a concentration of 35% according to the volume ratio of 1:1 mixed nitrate mixed acid, heat at low temperature until the sample is completely Dissolve, add 10mL of perchloric acid with a concentration of 68%, heat until fumes of perchloric acid appear, remove the beaker from the heating device, add 100mL of water, keep warm to completely dissolve the salt in the mixture, then cool to room temperature, 2 g of citric ...

example 2

[0065] First, weigh a certain amount of ferronickel sample (accurate to 0.00001g) for the test, and weigh the sample according to Table 1.

[0066] Place the weighed ferronickel sample for the test in a 600mL beaker, add 20mL of nitric acid with a concentration of 60% and hydrochloric acid with a concentration of 30% according to the volume ratio of 1:2 mixed nitrate mixed acid, heat at low temperature until the sample is completely Dissolve, add 10mL of perchloric acid with a concentration of 65%, heat until fumes of perchloric acid appear, remove the beaker from the heating device, add 90mL of water, keep warm to completely dissolve the salt in the mixture, then cool to room temperature, 2 g of citric acid was added to the mixture, and then 20% ammonia water was added to neutralize the mixture until the pH value of the mixture was 8.5 with an excess of 18 mL, and diluted with water to 300 mL. If the ferronickel sample contains chromium, the chromium needs to be completely ox...

example 3

[0083] First, weigh a certain amount of ferronickel sample (accurate to 0.00001g) for the test, and weigh the sample according to Table 1.

[0084] Place the weighed ferronickel sample for the test in a 600mL beaker, add 20mL of nitric acid with a concentration of 68% and hydrochloric acid with a concentration of 38% according to the volume ratio of 1:4, and heat at low temperature until the sample is completely Dissolve, add 10mL of perchloric acid with a concentration of 72%, heat until fumes of perchloric acid appear, remove the beaker from the heating device, add 110mL of water, keep warm to completely dissolve the salt in the mixture, then cool to room temperature, 2 g of citric acid was added to the mixture, and then 28% ammonia water was added to neutralize the mixture until the pH value of the mixture was 9.5 with an excess of 12 mL, and diluted with water to 300 mL. If the ferronickel sample contains chromium, the chromium needs to be completely oxidized.

[0085] If...

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Abstract

The invention provides a method for measuring the content of nickel in ferronickel. The method mainly comprises the following steps of: dissolving the ferronickel by using acid; heating the ferronickel until steam is generated by using perchloric acid so as to damage carbide; depositing nickel in a citric acid ammoniacal solution by using dimethylglyoxime, separating the nickel from other elements, and then dissolving the dimethylglyoxime by using nitric acid; and adding murexide serving as an indicator into an ammonium chloride-ammonia water buffer solution, titrating by using an ethylene diamine tetraacetic acid (EDTA) standard titration solution, and then calculating the content of the nickel. If the ferronickel contains cobalt, the cobalt is oxidized into trivalent cobalt by using hydrogen peroxide in a thermal ammoniacal solution, then the nickel can be deposited by using the dimethylglyoxime, and coprecipitation interference of the cobalt can be eliminated. Interference of other elements such as the cobalt in the ferronickel with measurement of the content of the nickel can be eliminated, the problem that corresponding standard substances do not exist in parts of content segments is solved by using a synthetic standard sample, and the aim of simply, conveniently, rapidly and accurately measuring the content of the nickel in the ferronickel is fulfilled.

Description

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Claims

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Application Information

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Owner PANGANG GROUP JIANGYOU CHANGCHENG SPECIAL STEEL
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