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A kind of detection method of moisture, vanadium pentoxide and carbon content in vanadium hexamine

A vanadium pentoxide and detection method technology, applied in the detection of vanadium pentoxide and carbon content, and in the field of moisture in vanadium hexaamine, can solve the problem of inability to accurately measure component content, fail to meet production process, quality judgment, and business settlement and other problems, to achieve the effect of easy operation and accurate method

Active Publication Date: 2021-10-29
HEBEI IRON AND STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the air, heated to 105°C, in addition to the physical evaporation of water, hexaamine vanadium also undergoes different chemical changes, decomposes or oxidizes. Conventional methods cannot accurately determine its component content.
For example, when detecting vanadium pentoxide, the deviation reaches 2-5%, which cannot meet the needs of production technology, quality judgment, and business settlement

Method used

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  • A kind of detection method of moisture, vanadium pentoxide and carbon content in vanadium hexamine
  • A kind of detection method of moisture, vanadium pentoxide and carbon content in vanadium hexamine
  • A kind of detection method of moisture, vanadium pentoxide and carbon content in vanadium hexamine

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Embodiment 1

[0027] The detection method of moisture, vanadium pentoxide and carbon content in a kind of vanadium hexaamine of the present embodiment, described method comprises the following steps:

[0028] (1) Sample pretreatment and moisture determination: fully mix the hexaamine vanadium sample, weigh 30g sample, accurate to 0.0001g, put the sample in a weighing bottle, and put it into a nitrogen gas flow device In a drying oven at a constant temperature of 105±2°C, dry to constant weight, calculate the moisture content, and the moisture content is 17.79%.

[0029] (2) Determination of vanadium pentoxide content: weigh 0.2000g of dried hexaamine vanadium sample, add 20mL of hydrochloric acid (1+1) to dissolve the sample, then add 5mL of nitric acid (ρ1.42g / mL), add Sulfuric acid (1+1) 40mL, heat to dissolve, continue to heat until sulfuric acid fumes 1-2min, remove and cool, dilute to 100mL with water, then add ferrous ammonium sulfate solution (10%) 10mL, then add ammonium persulfate ...

Embodiment 2

[0035] The detection method of moisture, vanadium pentoxide and carbon content in a kind of vanadium hexamine of the present embodiment, described method comprises the following steps:

[0036] (1) Sample pretreatment and moisture determination: fully mix the hexaamine vanadium sample, weigh 30g sample, accurate to 0.0001g, put the sample in a weighing bottle, and put it into a nitrogen gas flow device In a drying oven at a constant temperature of 105±2°C, dry to constant weight, calculate the moisture content, and the moisture content is 32.33%.

[0037] (2) Determination of vanadium pentoxide content: weigh 0.2000g of dried hexaamine vanadium sample, add 20mL of hydrochloric acid (1+1) to dissolve the sample, then add 5mL of nitric acid (ρ1.42g / mL), add Sulfuric acid (1+1) 40mL, heat to dissolve, continue to heat until sulfuric acid fumes 1-2min, remove and cool, dilute to 100mL with water, then add ferrous ammonium sulfate solution (10%) 10mL, then add ammonium persulfate s...

Embodiment 3

[0043] The detection method of moisture, vanadium pentoxide and carbon content in a kind of vanadium hexaamine of the present embodiment, described method comprises the following steps:

[0044] (1) Sample pretreatment and moisture determination: fully mix the hexaamine vanadium sample, weigh 30g sample, accurate to 0.0001g, put the sample in a weighing bottle, and put it into a nitrogen gas flow device In a drying oven at a constant temperature of 105±2°C, dry to constant weight, calculate the moisture content, and the moisture content is 20.33%.

[0045] (2) Determination of vanadium pentoxide content: weigh 0.2000g of dried hexaamine vanadium sample, add 20mL of hydrochloric acid (1+1) to dissolve the sample, then add 5mL of nitric acid (ρ1.42g / mL), add Sulfuric acid (1+1) 40mL, heat to dissolve, continue to heat until sulfuric acid fumes 1-2min, remove and cool, dilute to 100mL with water, then add ferrous ammonium sulfate solution (10%) 10mL, then add ammonium persulfate ...

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Abstract

The invention discloses a method for detecting moisture, vanadium pentoxide and carbon content in vanadium hexamine. The method comprises the steps of using nitrogen protection to carry out sample pretreatment, and then carrying out moisture measurement, using ferrous ammonium sulfate standard solution drop method to detect vanadium pentoxide content, and infrared carbon-sulfur analyzer to measure carbon content. The invention establishes a drying method for the moisture determination of the hexaamine vanadium sample, a sample dissolution method for the determination of the vanadium pentoxide, and an equivalent correction method for the determination of carbon, and realizes accurate detection of the moisture content of the hexaamine vanadium, vanadium pentoxide and carbon. The method is easy to operate and can meet the needs of the hexamine vanadium production process, quality judgment and business settlement.

Description

technical field [0001] The invention belongs to the technical field of physical and chemical detection, and in particular relates to a method for detecting moisture, vanadium pentoxide and carbon content in vanadium hexamine. Background technique [0002] Vanadium pentoxide, vanadium iron, vanadium nitrogen alloy and other vanadium products are widely used in metallurgy and chemical production. In recent years, vanadium aluminum alloy, vanadium electrolyte, high-purity vanadium pentoxide and other high-end vanadium products have come out, and the application of vanadium products has been continuously expanded field. [0003] In the production and purification process of vanadium, ammonium salts are mostly used to precipitate vanadium for separation and purification. Common precipitants include ammonium chloride and ammonium sulfate. The use of hexamethylenetetramine as a precipitant for low-temperature vanadium precipitation production has been reported. The advantage of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N5/04G01N31/16G01N21/3563
CPCG01N5/045G01N21/3563G01N31/16
Inventor 章伟卢明亮张庆国刘超
Owner HEBEI IRON AND STEEL
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