Method for measuring content of aluminum powder in titanium tetrachloride suspension liquid

A technology of titanium tetrachloride and suspension, applied in the field of chemical analysis, to achieve good precision and recovery, and strong practical application value

Active Publication Date: 2016-03-23
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are still relatively few studies on the detection method of aluminum powder in crude titanium tetrachloride suspension, and for the determination of aluminum powder, most of the determination methods introduced in the literature are EDTA back titration, such as the journal literature "Determination by complexometric titration Aluminum Content in Aluminum Powder Slurry", "Determination of Aluminum Powder and Potassium Perchlorate in Aluminum Powder Pyrotechnic Powder", etc., cannot be applied to the analysis and determination of aluminum powder content in titanium tetrachloride suspension

Method used

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  • Method for measuring content of aluminum powder in titanium tetrachloride suspension liquid
  • Method for measuring content of aluminum powder in titanium tetrachloride suspension liquid
  • Method for measuring content of aluminum powder in titanium tetrachloride suspension liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Example 1 Copper Standard Solution Back Titration Determination of Aluminum Powder Content in the Thick Titanium Tetrachloride Suspension

[0053] a. Use a dry plastic graduated straw to accurately pipette 2.00mL of 1# suspension into a 100mL centrifuge tube filled with 50mL of ethanol, shake well, and filter it into a beaker with fast filter paper. Before filtering, filter the filter paper, funnel and beaker with ethanol respectively. After the solution is wetted and filtered dry, wash the centrifuge tube and precipitate with ethanol for 8-10 times;

[0054] b. Heat and dissolve the precipitate with 10mL hydrochloric acid (1+1), add 10mL nitric acid and 5mL perchloric acid, evaporate to dryness with perchloric acid fumes, remove and cool, add 10mL hydrochloric acid (1+1) and heat to dissolve, add water to 100mL ;

[0055] c. Add 2-3mL ferric chloride solution (100g / L), boil it down, adjust it with sodium hydroxide solution (400g / L) until the precipitation of ferric hy...

Embodiment 2

[0076] Example 2 Zinc Standard Solution Back Titration Determination of Aluminum Powder Content in the Thick Titanium Tetrachloride Suspension

[0077] a. Use a dry glass graduated dropper to accurately pipette 2.50mL of 1# suspension into a 100mL ordinary test tube filled with 60mL of ethanol, shake well, and filter it into a beaker with a fast filter paper. Before filtering, use the filter paper, funnel and beaker respectively Wet with ethanol solution, filter and dry, wash the test tube with ethanol and precipitate 8-10 times;

[0078] b. Heat and dissolve the precipitate with 10mL hydrochloric acid (1+1), add 10mL nitric acid and 5mL perchloric acid, evaporate to dryness with perchloric acid fumes, remove and cool, add 10mL hydrochloric acid (1+1) and heat to dissolve, add water to 100mL ;

[0079] c. Add 2-3mL ferric chloride solution (100g / L), boil it down, adjust it with sodium hydroxide solution (400g / L) until the precipitation of ferric hydroxide just appears (at thi...

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Abstract

The invention particularly relates to a method for measuring the content of aluminum powder in titanium tetrachloride suspension liquid. The method includes the following steps that 1, the titanium tetrachloride suspension liquid is picked, slowly transferred to the bottom of a container containing ethyl alcohol samples, shaken to be uniform and filtered, and first sediment is obtained; 2, hydrochloric acid is added to the first sediment, nitric acid and perchloric acid are added after dissolution, heating and drying by distillation are conducted, then dissolution is conducted through hydrochloric acid, and a first solution is obtained; 3, after ferric salt is added to the first solution, the pH value is adjusted to 3-4, a buffering solution is added to adjust the pH value to 6-6.5, filtering is conducted, and second sediment is obtained; 4, hydrochloric acid is added to the second sediment, the pH value is adjusted to 9-12 after dissolution, and a second solution is obtained; 5, the second solution is boiled, cooled to the room temperature, subjected to constant volume and filtered, filtrate is picked, an EDTA back titration method is adopted to measure the content of aluminum in the second solution, and the content of aluminum powder in the suspension liquid is obtained through calculation. The method is high in both accuracy and recovery rate and has quite high practical value.

Description

technical field [0001] The invention relates to the technical field of chemical analysis, in particular to a method for measuring the content of aluminum powder in titanium tetrachloride suspension. Background technique [0002] Titanium tetrachloride is an important intermediate product in the production process of titanium and its compounds, and an important raw material for the production of titanium industry. Crude titanium tetrachloride is a reddish-brown turbid liquid containing many impurities with complex components. Among them, important impurities are SiCl 4 , AlCl 3 , FeCl 3 , FeCl 2 、VOCl 3 , VCl 4 、TiOCl 2 , CrCl 3 , MnCl 2 , Cl 2 , HCl, etc. The content of these impurities in the titanium tetrachloride solution varies with the raw materials used for chlorination and the process conditions. Crude titanium tetrachloride must be refined, otherwise the processing performance of downstream titanium products will be greatly affected due to the influence of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N31/16
CPCG01N31/16
Inventor 於利慧郑小敏苏洋汪雪梅周礼仙王凤苗庆东
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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