Method for determining content of silicon in ferrotitanium

A determination method and technology for silicon content, which are applied in the preparation of test samples and the measurement of color/spectral properties, etc., can solve the problems of operator injury, environmental pollution, and time-consuming, saving time, reducing environmental pollution, and reducing drugs. The effect of consumption

Pending Publication Date: 2021-01-22
SHANDONG SHIHENG SPECIAL STEEL GROUP
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Problems solved by technology

The whole operation process takes a long time, and the continuous measurement takes more than 20 hours to complete
In addition, when the sulfuric acid is heated to fumes to dehydrate the silicic acid, the test solution is prone to splash, which is easy to injure the operator.
The use of more chemical reagents and sulfuric acid fumes will pollute the environment

Method used

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Examples

Experimental program
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Embodiment Construction

[0010] In order to make the purpose, content, and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with examples.

[0011] (1) Weigh 0.1000g of ferro-titanium sample into a platinum crucible with 4g of anhydrous sodium carbonate and boric acid mixed flux (2+1) added (weigh 5 standard samples with different contents along with the sample to make a line), stir well , put into a muffle furnace heated to 920°C in advance and melt for 20 minutes. Take it out, put it into hot hydrochloric acid with 75ml (1+3) after cooling, and heat it at low temperature for leaching. After the leaching solution is cooled, transfer it to a 250ml volumetric flask, and mix it with water to a constant volume. This mother liquor can be used to determine titanium and silicon in ferrotitanium.

[0012] (2) Put 5ml of the mother liquor in a 100ml volumetric flask. Add 25ml of water, 8ml of et...

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Abstract

The invention relates to a method for determining a content of silicon in ferrotitanium. The method comprises the following steps of preparing a mother liquor, adding an ammonium molybdate solution into the mother liquor, adding a complexing agent and a reducing agent, measuring absorbance by using a spectrophotometer, and finding out a mass fraction of silicon on a working regression curve. The whole operation process takes about 4-5 hours so that the time is saved, fewer chemicals are used, a sulfuric acid smoke emitting process is not needed, the chemical consumption is reduced, and the environmental pollution and the danger to operators are decreased.

Description

technical field [0001] The invention belongs to the technical field of chemical composition analysis, and relates to a method for measuring silicon content in ferrotitanium. Background technique [0002] Ferro-titanium alloy is an important alloying agent, deoxidizing agent, and desulfurizing agent in the metallurgical industry. The national standard method for determining the impurity component silicon in ferro-titanium is the sulfuric acid dehydration gravimetric method. The test method is to decompose the sample with sulfuric acid and hydrochloric acid, oxidize it with hydrogen peroxide, and heat it until the sulfuric acid fumes to dehydrate the silicic acid. Leach with hydrochloric acid, filter, burn, and weigh. The impure silicon dioxide is treated with hydrofluoric acid-sulfuric acid, burn and weigh again, and calculate the mass fraction of silicon based on the mass difference before and after hydrofluoric acid treatment. The whole operation process takes a long time,...

Claims

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Application Information

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IPC IPC(8): G01N21/31G01N1/28
CPCG01N21/31G01N1/28
Inventor 史玉奎王传芳于真巩道敏陈伟庞祥斌
Owner SHANDONG SHIHENG SPECIAL STEEL GROUP
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