Detection method for conventional elements in limestone

A detection method, limestone technology, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problem in 1.5 hours, 1~2 hours for a single person to analyze SiO2, 1.5 hours for a single person to analyze Al2O3, consume chemicals, and timely Adjustment and control issues, to achieve the effects of timely adjustment, less time-consuming, and lower analysis costs

Active Publication Date: 2016-01-13
JIAOCHENG YIWANG FERROALLOY
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AI Technical Summary

Problems solved by technology

Laboratory technicians are required to carry out various tests separately, consuming a lot of chemicals, costing materials and labor. Calculated on the basis of 7 samples per day, it takes 1.5 hours for a single person to analyze CaO and MgO, and 1 to 2 hours for a single person to analyze SiO2. It takes 1.5 hours to analyze Al2O3, and 1 hour to analyze Fe2O3 by a single person, a total of 5~6 hours, which restricts the timely control of modern production data

Method used

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Embodiment 1

[0021] A method for detecting conventional elements in limestone, the specific steps and method are:

[0022] (1) Preparation of standard samples:

[0023] After crushing at least 5 limestones with different contents of CaO, MgO, SiO2, Al2O3 and Fe2O3, separate out 20g respectively, put them into a vibrating grinder and grind them for 1min to make a powder sample with particle size less than 200 mesh, take 1g of them and put them into PVC In the ring, use a press machine to press under a pressure of 25MPa for 60s to obtain a standard sample piece with a thickness of Φ40mm and a thickness of 5~6mm; the contents of CaO, MgO, SiO2, Al2O3, and Fe2O3 were detected in the remaining powder samples according to the national standard chemical analysis method. , as the comparison standard value to be used;

[0024] (2), the establishment of the standard working curve:

[0025] Put at least 5 standard sample pieces with different element contents into the X-ray fluorescence spectromete...

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Abstract

The invention relates to a detection method for conventional elements in limestone, in particular to a method for detecting the conventional elements in limestone by X ray fluorescence spectrometry analysis. The method includes: preparing limestone with different content of CaO, MgO, SiO2, Al2O3 and Fe2O3 into a series of standard samples, and establishing a CaO, MgO, SiO2, Al2O3 and Fe2O3 spectral line intensity and content analysis detection standard work curve on an X ray fluorescence spectrometer through the standard samples; and according to the spectral line intensity comparison result of CaO, MgO, SiO2, Al2O3 and Fe2O3 in limestone actually measured by the standard work curve and the X ray fluorescence spectrometer, calculating the content of CaO, MgO, SiO2, Al2O3 and Fe2O3 in the measured limestone automatically. The method provided by the invention employs a squash technique to perform analysis on the X-ray fluorescence instrument, not only saves manpower and material resources, reduces the analysis cost, but also consumes less time, and needs only 50 minutes for reporting the data of 7 samples, thus being convenient for production workshops to regulate limestone materials timely.

Description

technical field [0001] The invention discloses a method for detecting conventional elements in limestone, in particular to a method for detecting conventional elements in limestone by using X-ray fluorescence spectroscopy. Background technique [0002] The conventional elements CaO, MgO, SiO2, Al2O3, Fe2O3 in limestone are generally analyzed chemically, CaO and MgO are analyzed by EDTA titration, SiO2 is analyzed by silicon molybdenum blue spectrophotometry or gravimetric method, chrome azure S spectrophotometry or complexation Al2O3 was analyzed by titration method, and Fe2O3 was analyzed by o-phenanthroline spectrophotometry. Laboratory technicians are required to carry out various tests separately, consuming a lot of chemicals, costing materials and labor. Calculated on the basis of 7 samples per day, it takes 1.5 hours for a single person to analyze CaO and MgO, and 1 to 2 hours for a single person to analyze SiO2. It takes 1.5 hours to analyze Al2O3, and 1 hour to anal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N23/223
Inventor 原海贾慧荣马晓燕白佩莉
Owner JIAOCHENG YIWANG FERROALLOY
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