Method for detecting moisture content, vanadium pentoxide content and carbon content in hexamine vanadium

A vanadium pentoxide and detection method technology, applied in the direction of weighing, measuring devices, and analyzing materials by removing certain components, can solve the problems that cannot meet the production process, quality judgment, business settlement, and cannot accurately determine the component content. and other problems, to achieve the effect of easy operation and accurate method

Active Publication Date: 2019-04-09
HEBEI IRON AND STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Method for detecting moisture content, vanadium pentoxide content and carbon content in hexamine vanadium
  • Method for detecting moisture content, vanadium pentoxide content and carbon content in hexamine vanadium
  • Method for detecting moisture content, vanadium pentoxide content and carbon content in hexamine vanadium

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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 hexaamine 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 ...

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 content, vanadium pentoxide content and carbon content in hexamine vanadium. The method comprises the following steps: sample pretreatment withnitrogen protection, moisture determination, determination of vanadium pentoxide content with ammonium ferrous sulfate standard solution drop method, and determination of carbon content with an infrared carbon-sulfur analyzer. A drying method for moisture determination of a hexamine vanadium sample, a sample dissolving method for vanadium pentoxide determination, and an equivalent correction method for carbon determination are established, thereby realizing accurate detection of the moisture content, the vanadium pentoxide content and the carbon content in hexaamine vanadium. The method is easy to operate and can meet the requirements of production process, quality judgment and business settlement of hexamine vanadium.

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 Applications(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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