Method for measuring mercury element content of gangue or fly ash
A measurement method and element content technology, which is applied in the measurement of mercury element content in coal gangue or fly ash, and the measurement field of trace element content, can solve the problems of large error and low accuracy, and achieve good potential and value effects
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0055] S1: Digestion of test samples
[0056] S1-1: Weigh coal gangue (taken from Guizhou), then add acid hydrolysis solution, the acid hydrolysis solution is 65% nitric acid, 40% hydrofluoric acid and 85% mass percent concentration % mixture of phosphoric acid, the volume ratio of the three is 4:2:1, to obtain an acid hydrolyzate sample; wherein, the mass volume ratio of the test sample to the acid hydrolyzate is 1:15g / ml;
[0057] S1-2: The acid hydrolyzate sample is subjected to microwave digestion, and the specific digestion process is as follows:
[0058] (1) at a temperature of 140° C. and a pressure of 20 atm, the acid hydrolyzate sample was subjected to microwave digestion for 3 minutes;
[0059] (2) be heated to temperature 170 ℃ and pressurize to pressure 30atm, continue to carry out microwave digestion under this temperature and pressure for 3 minutes;
[0060] (3) be heated up to temperature 200 ℃ and pressurize to pressure 35atm, continue to carry out microwave ...
Embodiment 2
[0076] S1: Digestion of test samples
[0077] S1-1: Weigh fly ash (taken from Guizhou), then add acidolysis solution, the acidolysis solution is 60% nitric acid, 45% hydrofluoric acid and 45% mass percent concentration of A mixture of 90% phosphoric acid, the volume ratio of the three is 3:1.5:1, to obtain an acid hydrolysis solution sample; wherein, the mass volume ratio of the test sample to the acid hydrolysis solution is 1:20g / ml;
[0078] S1-2: The acid hydrolyzate sample is subjected to microwave digestion, and the specific digestion process is as follows:
[0079] (1) Under the temperature of 135 ° C and the pressure of 18 atm, the acid hydrolyzate sample was subjected to microwave digestion for 5 minutes;
[0080] (2) be heated up to temperature 165 ℃ and pressurize to pressure 31atm, continue to carry out microwave digestion 2 minutes under this temperature and pressure;
[0081] (3) be heated up to temperature 195 ℃ and pressurize to pressure 36atm, continue to car...
Embodiment 3
[0096] S1: Digestion of test samples
[0097] S1-1: Weigh coal gangue (taken from Shuozhou, Shanxi), then add acid hydrolysis solution, which is 70% nitric acid, 40% hydrofluoric acid and 40% mass percent concentration It is a mixture of 85% phosphoric acid, and the volume ratio of the three is 5:2:1, to obtain an acid hydrolyzate sample; wherein, the mass volume ratio of the test sample to the acid hydrolyzate is 1:25g / ml;
[0098] S1-2: The acid hydrolyzate sample is subjected to microwave digestion, and the specific digestion process is as follows:
[0099] (1) Under the temperature of 145 ° C and the pressure of 22 atm, the acid hydrolyzate sample was subjected to microwave digestion for 3 minutes;
[0100] (2) be heated up to temperature 175 ℃ and pressurize to pressure 29atm, continue to carry out microwave digestion 4 minutes under this temperature and pressure;
[0101] (3) be heated up to temperature 205 ℃ and pressurize to pressure 34atm, continue to carry out micr...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com