HD automatic microscope photometer coal rock analyzer characteristics

The HD Automated Microscope Luminometer also semi-automatically determines the percentage of 10 components and their reflectance.

For blended coal, the HD Automated Microscope Luminometer offers a variety of methods to determine blended coal ratios.

1. The vitrinite reflectance upper and lower limit method is used to determine the percentage of each single coal peak area by calculating the upper and lower limits of reflectivity of each single coal vitrinite group in the reflectance map. The method is suitable for the basic non-overlapping part of the reflectivity peak of each single coal in the mixed coal, or the peak height of the reflectivity of each single coal is basically the same.

2. The curve stripping peaking method is applicable to the case where there is an overlapping part of the reflectance peaks of each single coal in the blended coal, and the blended coal ratio is calculated from the area integral of the stripping curve.

3, the vitrinite reflectance of the upper and lower limit combination curve stripping peak method to overcome the use of curve stripping peak value method to calculate the mixed coal ratio, sometimes peeling out the single coal curve distribution is broad, you can use this method.

The HD Automated Microscope Photometer also gives the average result of repeated measurements, including the reflectance profile, making the reported results more reliable. This is particularly important for coal whose nature is at the border. For example, the maximum reflectance of a vitrinite group was 0.880 and 0.920, respectively, and the standard deviations were 0.18 and 0.21, respectively. The measurement results meet the national standards and are not out of tolerance. According to the results of the first measurement, the coal should be 1/3 coking coal and be a simple mixed coal. According to the results of the second determination, it should be fat coal and a complex blended coal. For the results of the second non-overshoot measurement, it is obviously best to give an average result to avoid the above conflict.

In view of the increasing diversification of coking coal companies, coal blending is inevitable. On the one hand, the coking enterprise should shut down the coal quality and avoid purchasing mixed coal. Starting from the reality, we must solve the problem of correctly evaluating the quality of coal blending and guiding the production of coking coal in the presence of mixed coal. Blended coal is different from single coal and cannot play the role of a single brand of coal in coking production. The coal reflectance distribution map is used to evaluate the quality of coal blending into the furnace in the presence of mixed coal. It is the only method to understand the percentage of each single brand in coal blending.

The data processing function of the HD automatic microscope photometer can be used to synthesize the coal reflectance distribution map from the reflectivity distribution map of single coal, and the percentages of the grades and actual percentages of coal coal reflectivity divided in the coking coal blending are given. , With coal average reflectivity, standard deviation and other information. By using this function, it is also possible to simulate coking coal blending, monitor coal blending into the furnace, and prevent mismatching and misalignment.

I. Introduction of HD-type automatic microscope photometer auxiliary function The HD-type automatic microscope photometer also has a number of user-friendly auxiliary functions. For example, the measurement results can be imported into WORD or EXCAL for users to edit or further summarize, count, and calculate in a favorite format. The measurement results can be published in the LAN for use by each door. You can go online while listening to your favorite music. The HD Automated Microscope Photometer also provides online help to query questions in operation via keywords, indexes, and more. Online help style is the same as WORD, EXCAL and other softwares. The HD Automated Microscope Luminometer also includes system detection software that detects hardware system failures and adjusts hardware system parameters.

II. Errors and assessments of the HD-type automatic microscope photometer After the successful development of the HD-type automatic microscope photometer, its accuracy, stability, measurement reproducibility, and discrimination ability were rigorously assessed.

1. When the instrument zero point HD automatic microscope photometer is in the absence of optical signal input, the dark current is extremely small, and it is permanently eliminated by adjusting the offset of the data acquisition card so that the result is always zero. Therefore, dark current does not occupy the range of data acquisition and does not reduce the resolution of data acquisition.

2. The linearity of the instrument is used to determine the working curve of the reflectance standard sheet, which terminates in a straight line throughout the entire process range, indicating that the instrument has good linearity.

3. Instantaneous stability In the entire measurement range (0-100mv), after the reflectance standard slice or coal sample optical signal is converted into an electrical signal, the range of the collected voltage signal does not basically exceed 1mv. The reflectivity of the yttrium garnet at 23°C is 1.722. If the voltage value is 60mv, the voltage changes by 1mv and the reflectance changes by 0.028. Meet national standards.

4. When the long-term stability reflectivity standard sheet or coal-like light signal is converted into electrical signals, the amplitude of the voltage signal does not decrease by more than 1mv in one hour, and the amplitude of voltage signals does not exceed 2mv in four hours, which satisfies the requirements of any form measurement.

5. Semi-automatic measurement error In the case of not moving the sample, semi-automatic measurement of the reflectance data of the reflectance standard piece or a point in the coal sample, the maximum value of which does not exceed 0.03, the standard deviation does not exceed 0.02.

6. Automatic measurement error When the sample is not moved, 10,000 reflectance data at a certain point in the reflectance standard film or coal sample are automatically measured, and the standard deviation does not exceed 0.03.

7. Repeated automatic determination of coal samples The repeated determination of coal samples showed that the maximum average reflectance of the vitrinite group of the coal sample does not exceed 0.03, which is better than the results of HY-4 type microscope photometer between 0.02 and 0.05. The same coal sample was automatically measured with 20,000 points and 40,000 points respectively, and the average reflectance of the vitrinite group was 0.012.