Method for quickly determining quality of titanium powder for fireworks and crackers

Abstract

The invention discloses a method for quickly determining the quality of titanium powder for fireworks and crackers. The method comprises the following steps: preparing a sample, establishing a detecting method, measuring fluorescence intensity of a titanium element characteristic spectrum in a sample, directly comparing and determining the titanium content in two titanium powder samples accordingto the measured fluorescence intensity value. The method has the advantages that firstly, the method is simple to operate, and can be repeatedly used to test; a test method only needs to establish once before sample test, and the test method can be repeatedly used to detect at different times after the method is established while the test method does not need to reestablish for each test; the whole test process comprises three steps of sample preparation, adding of materials into a sample cup and computer test after the novel test method is established for the first time; secondly, the detection period is extremely short, and total consumed time of the whole test process is about 2 minutes after the sample is prepared; thirdly, the labor intensity is very low, and requirements on an operator are not high; and fourthly, the method is good in stability and repeatability, and is high in reliability.

Description

technical field [0001] The invention belongs to the technical field of analysis and testing, and in particular relates to a method for quickly comparing the quality of titanium powder for fireworks and firecrackers. Background technique [0002] The quality of titanium powder for fireworks and firecrackers is judged by the content of titanium in the titanium powder. According to the relevant provisions of the national standard "Titanium Powder for Fireworks and Firecrackers" (GB / T 20211-2006), titanium powder is divided into grades 1, 2, 3, and 4 according to its titanium content. The higher the content, the higher the grade. Taking metal titanium powder as an example, the titanium content of grade 1 metal titanium powder is ≥90%, the titanium content of grade 2 metal titanium powder is ≥80%, the titanium content of grade 3 metal titanium powder is ≥70%, and the titanium content of grade 4 metal titanium powder is Content ≥ 60%. [0003] In the prior art, no method based o...

AI Technical Summary

Problems solved by technology

The method described in this standard has the following deficiencies: (1) The detection cycle is long, and generally skilled technicians need 2 working days to complete a detection

In addition, in the specific test process, it is easy to introduce the uncertainty of the measurement result error due to the lack of proficiency of the test personnel.

(2) The operation steps are relatively cumbersome. After the sample is washed with absolute ethanol and acetone for many times, it is dissolved with dilute nitric acid, filtered, transferred, and the filter residue is collected. Titanium ions and constant volume, finally take a certain sample solution and add excess EDTA, back titrate the excess EDTA with ZnCl2, and calculate the amount of titanium

Although this method can accurately and quantitatively analyze the content of titanium element in titanium powder for fireworks and firecrackers, the whole test process needs to go through steps such as sample dissolution, filtration, transfer, constant volume, and computer testing, and the time required is also half a working day. Day or so, it is not conducive to quickly determine the quality of titanium powder for fireworks and firecrackers

So far, there is no public literature report on the method of quickly judging the quality of titanium powder for fireworks and firecrackers based on energy dispersive X-ray fluorescence spectroscopy

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