Preparation method of pulverized coal rock optical sheet

Abstract

The invention discloses a preparation method of a pulverized coal rock optical sheet, and belongs to the technical field of preparation of rock optical sheets. The method comprises the following steps: firstly, selecting a certain amount of coal sample, crushing and sieving to ensure that the weight of coal sample with particle size less than 0.1mm does not exceed 10 percent of the total coal sample weight; weighing 100 to 200g of air-dried coal sample with particle size less than 1mm, and reducing to 10 to 20g by a stack-mixing quarterly method for later use; then, mixing a binder, a curing agent, an accelerator and a defoamer to prepare a resin liquid; and carrying out molding and constant temperature drying to obtain the pulverized coal rock optical sheet. Through adoption of the preparation method, the problem of unavoidable bubbles in a coal brick optical sheet in the prior art is solved, and the quality and utilization efficiency of the optical sheet are improved by adding the defoamer. The preparation method can make full use of materials and exploit the remaining rock blocks or cuttings. For certain precious minerals, the advantages of the preparation method can be clearlydemonstrated.

Description

technical field [0001] The invention relates to the technical field of preparation of rock light slices, in particular to a preparation method of pulverized coal rock light slices. Background technique [0002] Powdered coal light sheet: also known as coal particle cemented light sheet or coal brick light sheet, is a special coal particle light sheet for research on coal under reflected light. The advantage is that the amount of coal used is small, the representativeness is strong, and the grinding is convenient. Observe the pulverized coal light sheet under the reflected light of the microscope, and according to the characteristics of the coal's reflection color, protrusions, shape and primary cell structure, it can carry out quantitative statistics and comparison of the microscopic components in the coal, as well as measure the reflectance and oxidation degree of the coal, etc. . In petrology, through mineralogy, petrology, mineralogy and other methods, combined with mic...

AI Technical Summary

Problems solved by technology

This method is similar to the cold glue method in GB / T 16773-1997, but the epoxy resin needs to be heated in a water bath at 100°C until the epoxy resin is completely melted before operation. This method is time-consuming and laborious.

The common problem in the process of forming products is that the resin is easy to trap air, especially when the liquid resin and solid are mixed and stirred, because the liquid resin has a high viscosity and the air bubbles are not easy to discharge, even under the condition of applying a vacuum, it is difficult to remove the air bubbles. completely divisible

[0006] In the prior art, there is no effective measure to quickly remove air bubbles in coal bricks. The traditional method is time-consuming and laborious and the effect is not ideal. Great convenience, greatly reducing the labor intensity of experimenters and improving the progress of experiments

Moreover, it is difficult to demould the mold and the sample, and it is difficult to separate

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