Method for analyzing content of selenium/tellurium in complex copper-based multi-metal solid waste metallurgical slag
An analysis method and metallurgical slag technology are applied in the field of analysis of selenium/tellurium content in complex copper-based polymetallic solid waste metallurgical slag, which can solve the problems of large amount of reagents, easy clogging of instruments, cumbersome operation, etc., and achieve a low detection limit , The effect of small matrix effect and simple operation
Pending Publication Date: 2020-11-20
江西华赣瑞林稀贵金属科技有限公司
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Problems solved by technology
[0004] The purpose of the present invention is to solve the shortcomings of the existing method that the reagent consumption is large, the operation is cumbersome, the speed is slow and the instrument is easy to be blocked, and to establish an accurate, simple and rapid method for measuring the content of selenium / tellurium in complex copper-based multi-metal solid waste metallurgical slags. Analytical method
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Embodiment
[0021] Embodiment: the specific practice of the present invention is as follows:
[0022] 1. Preparation of analytical test solution:
[0023] Accurately weigh 0.2~0.3g sample (accurate to 0.0001g) and place it in a 250mL triangular beaker (blank test with the sample), moisten it with water, add 20mL~30mL aqua regia, cover the watch glass, dissolve completely at low temperature, and steam until When the volume is small, take it out and cool it slightly, rinse the watch glass and the cup wall with water, boil to dissolve the salt, take it out and cool it, add 10mL~15mL aqua regia, transfer to a 100mL volumetric flask, dilute with water to the mark and mix well, and The determination was carried out under the selected working conditions of the instrument.
[0024] 2. Preparation of working standard solution:
[0025] Selenium and tellurium single element standard solution: selenium standard solution ρ(Se)=1000μg / mL; tellurium standard solution ρ(Te)=1000μg / mL;
[0026] Mixed ...
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The invention discloses a method for analyzing the content of selenium / tellurium in complex copper-based multi-metal solid waste metallurgical slag. The method comprises the steps of weighing a metallurgical slag sample, adding water into the sample for wetting, then adding an aqua regia solution to dissolve the sample, placing the sample on an electric heating plate for low-temperature heating reaction, washing the cup wall of a triangular beaker with distilled water, adding the aqua regia solution, placing the triangular beaker on the electric heating plate for low-temperature heating to slight boiling, taking down and cooling to room temperature; and analyzing and determining the contents of selenium and tellurium in the solution by adopting inductively coupled plasma emission spectrometry. According to the method, an aqua regia solution prepared from concentrated hydrochloric acid and concentrated nitric acid is used for dissolving the sample, ICP-AES is used for continuously determining the contents of selenium and tellurium in the metallurgical slag in an aqua regia medium, and method precision and accuracy tests are carried out under the determination conditions. The representativeness of the sample can be ensured, and the accuracy of selenium and tellurium analysis results is improved; and the method has the advantages of simplicity in operation, low detection limit, small matrix effect, wide linear range, accuracy, reliability and the like.
Description
technical field [0001] The invention belongs to metallurgical analysis technology, in particular to an analysis method for selenium / tellurium content in complex copper-based multi-metal solid waste metallurgical slag. Background technique [0002] With the improvement of living standards, in the field of urban mines and non-ferrous metal renewable resources, waste residues coexisting with polymetallic and harmful elements are produced in the metallurgical process of the industry, with many types and complex components. How to determine the content of rare elements such as selenium and tellurium in these metallurgical waste residues is an important part of determining the metallurgical process and method. Therefore, establishing an accurate, simple and rapid analytical method for the determination of selenium and tellurium has practical guiding significance. [0003] At present, selenium and tellurium are usually determined by extraction separation spectrophotometry, atomic f...
Claims
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IPC IPC(8): G01N1/28G01N21/73
CPCG01N1/28G01N21/73
Inventor 毛小晶王红军刘名红项建峰袁鹏程于乐
Owner 江西华赣瑞林稀贵金属科技有限公司