Preparation method of pulverized coal rock optical sheet

A technology of pulverized coal and coal rock, which is applied in the field of preparation of pulverized coal rock light slices, can solve the problems that resin is easily trapped in air, difficult to separate, and difficult to discharge, so as to improve quality and utilization efficiency, high product quality, The effect of modeling convenience

Inactive Publication Date: 2019-05-10
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 und

Method used

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  • Preparation method of pulverized coal rock optical sheet

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[0025] Example 1:

[0026] Combine figure 1 Shown.

[0027] The first step: material preparation

[0028] Select coal, binder, curing agent, accelerator, defoamer and release agent as raw materials;

[0029] Step 2: Preparation of pulverized coal sample

[0030] First, the coal sample is crushed with a pulverizer or a mortar, and then the medium sample is repeatedly sieved and crushed until it completely passes through the test sieve, so that the weight of the coal sample smaller than 0.1 mm does not exceed 10%. Weigh 100-200g of air-dried coal with a particle size of less than 1mm, and divide it into 10-20g for use using the heap-mixing quartering method.

[0031] Step 3: Preparation of resin liquid

[0032] Unsaturated polyester resin, curing agent [cyclohexanone peroxide and dibutyl ester solution (1:1)], accelerator (a 6% solution of cobalt soap in styrene) and defoaming agent are proportioned by weight. The weight ratio is 100:4:4:2. The defoamer adopts the styrene solution of or...

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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...

Claims

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Application Information

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IPC IPC(8): G01N1/28G01N1/34G01N1/36G01N1/38
Inventor 李丹丹李茂森杨毅李娜
Owner SHANDONG UNIV OF SCI & TECH
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