Method for determination of silicon content in ferro-aluminum manganese

A determination method, Almanganese Ferrotechnology, applied in the field of inspection and testing, can solve the problems of many types of chemicals, cumbersome operation process, and long analysis time, and achieve the effects of less types and dosage, less environmental pollution, and faster analysis speed

Inactive Publication Date: 2012-07-11
ANGANG STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method is simple, fast and accurate, the equipment investment is relatively large, and the combination of two types of equipment is required, which directly limits the popularization and application of this method.
[0004] In 2010, the new corporate standard "Q/ASB111.1-2010 Determination of Al-Mn-Fe-Silicon Conte

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1. Reagent preparation:

[0023] Nitric acid with a bulk density of 1.42 g / ml;

[0024] Hydrochloric acid with a bulk density of 1.19 g / ml.

[0025] 2. Prepare a silicon standard solution with a concentration of 1mg / ml:

[0026] Weigh 1.0698g of silicon dioxide with a silicon weight percentage of 99.9% that has been burned at 1000°C for 1 hour in advance, cool it to room temperature in a desiccator, place it in a platinum crucible with 3 g of anhydrous sodium carbonate, and cover it with 1 g of anhydrous sodium carbonate. For sodium carbonate water, first heat at low temperature, then place at 950°C and heat until transparent, continue heating for 3 minutes, cool, use a plastic beaker filled with cold water to frit until completely dissolved, cool to room temperature, and transfer to a 500 ml volumetric flask Dilute to volume with water, mix well and store in plastic bottles.

[0027] 3. Draw the silicon standard working curve:

[0028] Prepare five 100ml volumetric...

Embodiment 2

[0034] 1. Reagent preparation:

[0035] Prepare nitric acid with a bulk density of 1.42g / ml and hydrochloric acid with a bulk density of 1.19g / ml for subsequent use.

[0036] 2. Prepare a silicon standard solution with a concentration of 1mg / ml:

[0037] Weigh 1.0698g of silicon dioxide with a silicon weight percentage of 99.9% that has been burned at 1000°C for 1.5h in advance, cool it to room temperature in a desiccator, place it in a platinum crucible with 4 g of anhydrous sodium carbonate, and cover it with 2 g For anhydrous sodium carbonate, first heat at a low temperature, then heat at a high temperature of 950°C until it becomes transparent, continue heating for 4 minutes, cool, melt the block in a plastic beaker filled with cold water until it is completely dissolved, cool to room temperature, and transfer to a 500 ml volumetric flask Dilute with water to volume, mix well and store in plastic bottles.

[0038] 3. Draw the silicon standard working curve:

[0039] Pre...

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Abstract

The invention provides a method for determination of silicon content in ferro-aluminum manganese, comprising the following steps: dissolving a sample to be tested with hydrochloric acid and nitric acid, introducing the solution into an inductively coupled plasma atomic emission spectrograph, and automatically calculating and displaying the concentration of silicon in the sample of ferro-aluminum manganese according to the standard working curve for silicon stored in the spectrograph. The method of the invention implements the working curves comparison and automatic analysis and verification with the inductively coupled plasma atomic emission spectrograph, so that the working process is greatly simplified with high analysis speed and high accuracy. The standard working curve for calibration of silicon solution is automatically drawn by an analysis software, and the linear correlation coefficient between the sample of ferro-aluminum manganese and the standard working curve is greater than 99.9% so as to provide reliable analytical data for manufacturing plants in a fast and accurate manner; moreover the reagents are less used in terms of category and dosage so as to relatively reduce the environmental pollution.

Description

technical field [0001] The invention belongs to the technical field of inspection and testing, and in particular relates to a method for measuring the silicon element content in Almanganese ferromanganese with an aluminum content of 50%. Background technique [0002] Almanganese ferroalloy is used as a new type of deoxidizer and alloying element additive in the steelmaking process. Because of its good deoxidizing effect and high recovery rate of alloying elements, it has partially replaced pure aluminum, silicon manganese, and ferromanganese alloys, especially in recent years. It is widely used in the production of metallurgical industry. [0003] The determination of the content of silicon in ferroalmanganese mostly uses a full-spectrum direct-reading plasma spectrometer composed of a charge array detector and a mid-order grating crossed two-dimensional spectroscopic system. Silicon content. Although this method is simple, fast and accurate, the equipment investment is re...

Claims

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Application Information

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IPC IPC(8): G01N21/73
Inventor 宋立伟单桂艳陈克仲董玲赵宇康宝军赵竟泽
Owner ANGANG STEEL CO LTD
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