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Method for measuring sodium content in slagging agent

A technology of slag removal agent and sodium content, which is applied in the field of chemical detection, can solve the problems of slow reaction speed, low precision, troublesome detection steps, etc., and achieve the effect of fast analysis speed, high precision and wide dynamic linear range

Pending Publication Date: 2021-09-17
SHANDONG IRON & STEEL GRP YONGFENG LINGANG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the detection steps of the above detection method are cumbersome, the reaction speed is slow, and the accuracy is not high.

Method used

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  • Method for measuring sodium content in slagging agent
  • Method for measuring sodium content in slagging agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Weigh 0.1g sample of slag-removing agent in a 250ml beaker, add 20ml aqua regia, and add 0.01mg / mL potassium ion solution (it can avoid the high-concentration example peak covering the low-concentration ion peak and make it undetectable ), shake gently, and put it on a microwave heating device for heating. Compared with traditional heating plate heating, microwave heating has better decomposition ability, thereby improving the uniformity of decomposition and ensuring complete decomposition. The microwave temperature is controlled at 200 degrees Celsius, keep the volume unchanged, after boiling for about 15 minutes, take it out and cool it, dissolve it in a 500ml volumetric flask, shake it well, and filter the test solution into a 100ml volumetric flask with a medium-speed filter paper for later use. for the target solution.

[0025] Select five parts of 2mL coloring solution, and add 2~10mL of the target solution to the coloring solution in turn, dilute it with water to...

Embodiment 2

[0036] Weigh 0.1g sample of slag-removing agent into a 250ml beaker, add 20ml aqua regia, and add 0.01mg / mL potassium ion solution (can avoid high-concentration ion peaks covering low-concentration ion peaks and make them undetectable ), shake gently, and put it on a microwave heating device for heating. Compared with traditional heating plate heating, microwave heating has better decomposition ability, thereby improving the uniformity of decomposition and ensuring complete decomposition. The microwave temperature is controlled at 220 degrees Celsius, keep the volume constant, after boiling for about 15 minutes, take it off and cool it, dissolve it in a 500ml volumetric flask, shake it well, and filter the test solution into a 100ml volumetric flask with a medium-speed filter paper for later use. for the target solution.

[0037] Select five parts of 2mL coloring solution, and add 2~10mL of the target solution to the coloring solution in turn, dilute it with water to 200mL to ...

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Abstract

The invention provides a method for measuring the content of sodium in a slagging agent. The method comprises the following steps: a, decomposing a slag melting agent sample by using aqua regia under a microwave condition at the temperature of 200-220 DEG C, carrying out constant volume, filtering to remove insoluble substances to obtain a target solution, and adding a potassium ion solution with the content of 0.01 mg / mL into the target solution; b, selecting five parts of 2mL coloring liquid, sequentially adding 2-10mL of target solution into the coloring liquid, and adding water to dilute the coloring liquid to 200mL to obtain a to-be-detected solution; c, selecting an analysis element sodium with the spectral line wavelength of 589.5 as an analysis line; d, measuring the absorbance of the solution to be measured by adopting inductively coupled plasma atomic emission spectrometry, and making a curve graph; e, analyzing according to the curve graph to obtain the sodium concentration. The method is high in analysis speed, wide in dynamic linear range and higher in precision, and can be widely applied to modern metallurgical analysis.

Description

technical field [0001] The invention belongs to the field of chemical detection, and in particular relates to the determination of sodium content in a slag reducing agent. Background technique [0002] With the development of my country's steelmaking industry and the increasing shortage of international iron ore resources, the use of scrap steel in the steelmaking process continues to increase. Steel mills generally add different heating elements to the furnace in the early stage of smelting according to smelting needs. These heating agents are generally high-grade ferrosilicon and silicon-carbon synthetic balls, while conventional slagging agents include light-burned magnesia balls, light-burned dolomite and other slag-forming materials containing magnesium oxide. . This type of heating agent generally contains a certain amount of ferrosilicon, and the production of ferrosilicon is not only expensive, but also brings serious environmental load. The slagging agent is a materi...

Claims

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Application Information

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IPC IPC(8): G01N21/73G01N1/28
CPCG01N21/73G01N1/28
Inventor 李金花韩世国卞玉涵刘秀秀席云荣
Owner SHANDONG IRON & STEEL GRP YONGFENG LINGANG CO LTD
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