A rapid measurement method for coal caking index and colloidal layer index
A colloidal layer index and cohesive index technology, applied in the field of atomic emission spectrometry, can solve the problems of insufficient measurement accuracy, slow speed, and offline measurement only
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[0056] Implementation example: 40 parts of coal samples are carried out to measure the cohesive index and colloidal layer index:
[0057] 1) In this example, a total of 40 coal samples are used, 35 samples are selected as calibration samples, and the remaining 5 samples are used as samples to be tested; As a reference value, as shown in Table 1; due to the large amount of data, some sample data are omitted here;
[0058] Table 1. Calibration sample composition
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[0061] 2) Use the LIBS system to collect the spectral data of 35 calibration samples to obtain the spectral line intensity;
[0062] 3) Screen the spectral lines and use the PLS method to establish a calibration model:
[0063] a) According to the physical background, select the atomic wires and ionic wires of carbon, nitrogen, silicon, oxygen, and aluminum, as well as CN, C 2 Molecular line, get spectral line set 1;
[0064] b) Randomly remove 5 of the 35 calibration samples, and use the PL...
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