Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for determining content of nickel in ferro-nickel alloy and sample preparation process thereof

A technology for the determination of nickel content and nickel-iron alloy, which is applied in the field of analysis and detection, can solve problems such as environmental pollution, and achieve the effects of avoiding pollution, high efficiency and no sample.

Inactive Publication Date: 2020-08-14
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
View PDF7 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are no effective environmental protection measures for the recovery and treatment of perchloric acid fumes, so this acid decomposition method causes serious environmental pollution.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for determining content of nickel in ferro-nickel alloy and sample preparation process thereof
  • Method for determining content of nickel in ferro-nickel alloy and sample preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Embodiment 1: iron crucible primary melting method measures the nickel content in the ferronickel alloy

[0046] 1. Sample melting is completed through the following steps:

[0047] A. Accurately weigh 0.400g (accurate to 0.1mg) nickel-iron standard sample (particle size ≤ 0.125mm) into a 50mL iron crucible pre-added with about 2g of sodium peroxide, then add about 2g of sodium peroxide to cover the surface of the sample.

[0048] B. Move the crucible into a high-temperature furnace at 600°C, heat it until it melts, then raise the temperature to 700°C, melt at this temperature for 10 minutes, and take out the crucible to cool to room temperature.

[0049] 2. The determination of nickel content is completed by the following steps

[0050] C. Put the crucible into a beaker filled with an appropriate amount of water in advance, cover it with a watch glass and leaching until the melt is completely leached; wash the crucible with water, take it out, and slowly add hydrochlo...

Embodiment 2

[0057] Embodiment 2: Determination of nickel content in nickel-iron alloy by corundum crucible secondary melting method

[0058] 1. Sample melting is completed through the following steps

[0059] A. Accurately weigh 0.300g (accurate to 0.1mg) nickel-iron sample (particle size ≤ 0.0.180mm, that is, all samples pass through 80 mesh sieve) in a 30mL corundum crucible pre-added with about 2g of sodium peroxide, and then Add about 2g of sodium peroxide to cover the surface of the sample.

[0060] B. Move the crucible into a high-temperature furnace at 680°C, melt sodium peroxide at this temperature, then heat up to 800°C for 20 minutes, and take out the crucible to cool to room temperature.

[0061] C. Put the crucible into a beaker filled with 50mL water in advance, cover it with a watch glass and leaching until the melt is completely leached; wash the crucible with water, take out the crucible, and slowly add hydrochloric acid dropwise to the test solution until the test soluti...

Embodiment 3

[0071] Embodiment 3: Determination of nickel content in nickel-iron alloy by high-alumina crucible once-melting method

[0072] A. Accurately weigh 0.200g (accurate to 0.1mg) nickel-iron sample (particle size ≤ 0.0.180mm, that is, all samples pass through 80 mesh sieve) in a 30mL high-alumina crucible pre-added with about 2g of sodium peroxide, Then add about 3g of sodium peroxide to cover the surface of the sample.

[0073] B. Move the crucible into a high-temperature furnace at 680°C, melt sodium peroxide at this temperature, then heat up to 820°C and melt for 25 minutes, and take out the crucible to cool to room temperature.

[0074] C. Put the crucible into a beaker filled with 50mL water in advance, cover with a watch glass and leaching until the molten material is leaching completely. Wash the crucible with water, take out the crucible, slowly add hydrochloric acid dropwise to the test solution until the test solution is clear (pH is about 2.5), transfer the test soluti...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for determining the content of nickel in a ferro-nickel alloy and a sample preparation process thereof, and belongs to the technical field of analysis and detection. In order to overcome the defects of the prior art, the invention provides a sample preparation process of the method for determining the content of nickel in the ferro-nickel alloy. The method comprises the steps of taking sodium peroxide as a flux, carrying out primary or secondary melting in a crucible at the temperature of 700-850 DEG C so as to guarantee the effect of complete melting of the sample, enabling the flux and the sample to be slowly subjected to a high-temperature metathesis reaction at the same time, and achieving sufficient oxidation of ferro-nickel alloy elements and combination with the flux, so that a melt is not splashed or lost, use of a large quantity of acid reagents is avoided, and the method is more environment-friendly and green; and the method has the advantagesof high efficiency, batch sample melting, no sample loss, satisfactory solving of the difficult melting problem of the ferro-nickel alloy, and accurate detection result.

Description

technical field [0001] The invention belongs to the technical field of analysis and detection, and in particular relates to a method for measuring nickel content in nickel-iron alloy and a sample preparation process thereof. Background technique [0002] Nickel-iron is a nickel-iron alloy containing nickel metal and iron. It can be used as an alloying element additive in the steelmaking industry to improve the bending strength and hardness of steel. In cast iron, it can make its structure uniform and its density increased. It can also be used as a nickel-containing Or nickel-chromium cast iron rolls and other casting alloy additives. According to the level of nickel metal content, it can be divided into high ferronickel, medium ferronickel and low ferronickel. [0003] The international standard for the determination of nickel content in ferronickel is ISO 6352-1985 "Dimethylglyoxime gravimetric analysis method", the national standard is GB / T 30072-2013 "EDTA titration meth...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/44G01N1/38G01N5/00G01N21/31G01N31/16
CPCG01N1/38G01N1/44G01N5/00G01N21/31G01N31/16G01N2001/386
Inventor 郑小敏汪雪梅苏洋王凤
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com