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Method for determining component content in high-efficiency reducing agent of ladle refining furnace

A ladle refining furnace and measurement method technology, which is applied in the field of determination of component content in high-efficiency reducing agents in ladle refining furnaces, can solve the problems of high cost and complicated operation, and achieve the effects of low cost, high analysis accuracy and less chemical reagents

Inactive Publication Date: 2019-03-01
HENGYANG VALIN STEEL TUBE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The main purpose of the present invention is to provide a method for measuring the content of components in the high-efficiency reducing agent of the ladle refining furnace, so as to solve the problems of complicated operation and high cost when the existing analysis method is used to measure the content of the components in the high-efficiency reducing agent of the ladle refining furnace

Method used

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  • Method for determining component content in high-efficiency reducing agent of ladle refining furnace
  • Method for determining component content in high-efficiency reducing agent of ladle refining furnace
  • Method for determining component content in high-efficiency reducing agent of ladle refining furnace

Examples

Experimental program
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Effect test

Embodiment 1

[0040] 1. Preparation of standard solution.

[0041] (1) Silica standard solution

[0042] Weigh 1.0000g of silicon dioxide (mass fraction greater than 99.9%, pre-burned at 1000°C for 1h, place in a desiccator, and cool to room temperature), place in a platinum crucible with 3g of anhydrous sodium carbonate, and stir evenly , and then covered with (1-2) g of anhydrous sodium carbonate, first heated the platinum crucible at a low temperature, then heated and melted at a high temperature of 950°C until transparent, continued to heat and melt for 3 minutes, took it out, and cooled. Transfer to a polytetrafluoroethylene beaker filled with cold water for leaching, and heat at low temperature until the frit is completely dissolved. Take out the crucible, wash it carefully, cool to room temperature, transfer the solution into a 1000mL volumetric flask, dilute to the mark with water, mix well, and store it in a polypropylene or polytetrafluoroethylene bottle. 1 mL of this solution c...

Embodiment 2

[0076] The difference from Example 1 is: the test sample is GBW01703, and the weight ratio of sodium carbonate and boric acid is 1:1.

[0077] Test result shows that aluminum oxide (Al 2 o 3 ), the concentrations of calcium oxide (CaO) and magnesium oxide (MgO) are 11.98wt%, 39.86wt%, and 6.85wt% in turn. Therefore, compared with Example 1, the error of the test result in this example is larger and the accuracy is lower.

Embodiment 3

[0079] The difference from Example 1 is: the test sample is GBW01703, and the weight ratio of high-efficiency reducing agent to flux in some ladle refining furnaces is 1:50.

[0080] The test results show that the aluminum oxide (Al 2 o 3 ), the concentrations of calcium oxide (CaO) and magnesium oxide (MgO) are 11.75wt%, 39.68wt%, and 6.81wt% in turn. Therefore, compared with Example 1, the error of the test result in this example is larger and the accuracy is lower.

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Abstract

The invention provides a method for determining the component content in a high-efficiency reducing agent of a ladle refining furnace. The high-efficiency reducing agent of the ladle refining furnaceincludes metal aluminum, aluminum oxide, calcium oxide, silicon dioxide and magnesium oxide. The method comprises melting a part of a mixture of the high-efficiency reducing agent of the ladle refining furnace and a flux in a ceramic crucible with graphite at the bottom to obtain a melt solution; conducting spectral analysis on the melt solution by using an inductively coupled plasma emission spectrometer to obtain the content of the aluminum oxide, the calcium oxide, the silicon dioxide and the magnesium oxide. The method is simple in operation, low in cost, low in chemical reagent used and high in analysis accuracy and meets the demand for fast-paced production.

Description

technical field [0001] The invention relates to the field of analytical chemistry, in particular to a method for determining the content of components in a high-efficiency reducing agent for a ladle refining furnace. Background technique [0002] LF high-efficiency reducing agent is one of the important auxiliary materials for deoxidation and desulfurization of molten steel in ladle refining furnace. It is mainly used for deoxidation and desulfurization in the process of steelmaking to improve the internal quality of steel, and to adjust the alkalinity of steel slag to facilitate slag formation and impurity removal. , refine grains, improve the strength and low temperature toughness of steel. Most of the commonly used LF high-efficiency reducing agents in steelmaking production are metallic aluminum, alumina (Al 2 o 3 ), calcium oxide (CaO), silicon dioxide (SiO 2 ) and magnesium oxide (MgO) are compounded with activator and flux in proportion. In order to meet the needs...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/73G01N1/44
CPCG01N1/44G01N21/73
Inventor 唐芳阳益军余洪信
Owner HENGYANG VALIN STEEL TUBE
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