Determination method of silicon content in silicomanganese

A determination method and technology of silicon content, applied in the direction of color/spectral property measurement, etc., can solve the problems of cumbersome detection method steps, reduce detection cost, and long detection cycle, so as to meet industrial production needs, reduce measurement cost, and shorten detection cycle. Effect

Inactive Publication Date: 2015-11-11
SHANDONG XIWANG SPECIAL STEEL
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for the determination of silicon content in silicomanganese, which can be simple, Efficient and accurate analysis of silicon content in silicomanganese to meet fast-paced production needs and reduce testing costs

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  • Determination method of silicon content in silicomanganese

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Embodiment Construction

[0022] The present invention will be described in detail below by way of examples.

[0023] A method for determining silicon content in silico-manganese, comprising the following steps: firstly melting a sample with sodium hydroxide, leaching it with hot water, adding sulfuric acid to acidify it, separating it at a constant volume, adjusting the pH, adding sulfuric acid nitric acid mixed acid and ammonium molybdate , Silicon in silicomanganese and ammonium molybdate generate silicomomolybdenum heteropolyacid, and finally add ferrous ammonium sulfate to reduce silicomomolybdenum heteropolyacid to silicomomolybdenum blue, and measure its absorbance with a spectrophotometer at a wavelength of 680nm.

[0024] The assay method of silicon content in described silicon manganese, concrete steps are as follows:

[0025] (1) Weigh 0.100g of a sample accurate to 0.0001g and place it in a nickel crucible, add 3g of sodium hydroxide, mix well, place the sample on an electric furnace and he...

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Abstract

The invention belongs to the technical field of element determination, and particularly relates to a determination method of silicon content in silicomanganese. The determination method of silicon content in silicomanganese comprises the following steps: firstly, after fusing a sample with sodium hydroxide, leaching with hot water; adding sulfuric acid for acidification; after carrying out constant volume sampling, adjusting the pH value; adding mixed acid of sulfuric acid and nitric acid and ammonium molybdate, silicon in silicomanganese and ammonium molybdate generate silicate molybdate acid; finally, adding ferrous sulfate for restoring silicate molybdate acid into silicomolybdenum blue, and determining the absorbance at the wave length of 680 nm with a spectrophotometer. The determination method can easily, conveniently, efficiently and accurately analyze silicon content in silicomanganese, so as to meet the fast-paced production demand and reduce the determination cost.

Description

technical field [0001] The invention belongs to the technical field of element determination, and in particular relates to a method for determining silicon content in silicomanganese. Background technique [0002] The national standard (GB / T5686.2-2008) uses the perchloric acid dehydration gravimetric method for the determination of silicon content in silicomanganese. The main steps are as follows: First, weigh 1g of the sample and add 5 to 8g of sodium peroxide in a nickel crucible and mix it at 700 Melt at ~750 degrees Celsius for 10 to 15 minutes, then use hot water to leach the melt and add 30ml of hydrochloric acid to acidify, concentrate the volume to 100ml, then add 100ml of perchloric acid to smoke and dehydrate the solution until the solution is viscous, then cool down and filter the precipitate with quantitative filter paper. They were washed with hydrochloric acid until free of iron ions, and washed with water until free of chloride ions. After collecting the con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/31
Inventor 王棣张灵通景振苏韩红英赵宁宁董晓
Owner SHANDONG XIWANG SPECIAL STEEL
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