A kind of preparation method of microfine powder sample light sheet
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A fine particle, sample light technology, applied in the preparation of test samples, etc., can solve problems such as easy agglomeration
Active Publication Date: 2021-04-20
BEIJING MINING & METALLURGICAL TECH GRP CO LTD
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Problems solved by technology
[0004] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a method for preparing a light sheet of a fine-grained powder sample, which can effectively solve the problem that the fine-grained powder sample is prone to agglomeration in the preparation process of the light sheet, and has great advantages. Good dispersion, and the use of equipment is simple and easy to operate, can produce high-quality light sheets to meet the needs of optical microscope observation
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preparation example Construction
[0022] A method for preparing a light sheet of a fine-grained powder sample, which is used for making a fine-grained powder sample with a particle size below 74 μm into a light sheet, especially suitable for making a fine-grained powder sample with a particle size below 38 μm into a light sheet, Including the following steps:
[0023] Step 1. Take 0.1g sample and soak it in 50mL alcohol for 2 hours, then ultrasonically disperse it for 5 minutes, and dry it naturally to obtain a dry sample soaked in alcohol. In order to prevent the agglomeration of fine-grained powder samples during the optical film preparation process and achieve better observation results, the sample dosage in each optical film preparation process should be strictly controlled at 0.1 g.
[0024] Step 2, smear the template and the mold with butter, and fix the mold on the template with plasticine. Wherein, the mold adopts a mold with an inner diameter of 29mm and a height of 15mm. Step 1 and said step 2 can ...
Embodiment 1
[0031] like figure 1 As shown, a method for preparing a light sheet of a fine-grained powder sample is used to make a light sheet of a gold concentrate beneficiation mixed tailing sample (the particle size of the sample is -400 mesh, accounting for 90%) in a refinery, which specifically includes the following step:
[0032] Step a1, taking 0.1 g of the gold concentrate beneficiation mixed tailings sample and soaking in 50 mL of alcohol for 2 hours, then ultrasonically dispersing for 5 minutes, and drying naturally, so as to obtain a dry sample soaked in alcohol.
[0033] Step a2, according to the volume ratio of E-type epoxy resin:dibutyl phthalate=2:1, dibutyl phthalate is used to dilute the E-type epoxy resin, so as to obtain the diluted epoxy resin.
[0034] Step a3, smearing butter on the template and the mold, and fixing the mold on the template with plasticine. Wherein, the mold adopts a mold with an inner diameter of 29mm and a height of 15mm.
[0035] Step a4, pour ...
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Abstract
The invention discloses a method for preparing a light sheet of a fine-grained powder sample, which comprises the following steps: taking 0.1 g of the sample and soaking it in 50 mL of alcohol for 2 hours, then ultrasonically dispersing it for 5 minutes, and drying it naturally to obtain the alcohol-soaked sample The dry sample of the mold; the template and the mold are smeared with oil, and the mold is fixed on the template; the dry sample soaked in alcohol is poured into the mold, and 5mL of diluted epoxy resin is added to the mold, and then dripped Add 20 drops of ethylenediamine, stir evenly, and then place it at room temperature for 12 hours to obtain a cured sample; wash, finely grind, finely grind, sandpaper, and polish the cured sample to obtain a light sheet. The present invention can effectively solve the problem that microfine powder samples are prone to agglomeration in the preparation process of light sheets, not only has good dispersibility, but also uses simple and easy-to-operate equipment, and can prepare high-quality light sheets, which meet the requirements of optical microscopy. observation requirements.
Description
technical field [0001] The invention relates to the field of sample optical sheet preparation, in particular to a method for preparing a fine particle powder sample optical sheet. Background technique [0002] In the process of process mineralogy research, whether using optical microscope observation or scanning electron microscope and other instruments for analysis and measurement, it is necessary to prepare the sample into a light sheet first. The preparation method of the light sheet is generally to mix the sample with the epoxy resin and its curing agent, and then perform grinding and polishing after the sample is cured, so as to prepare the light sheet. High-quality optical film is the basis for carrying out technical mineralogy research. If the grinding quality is not good, it will affect the accuracy of identification results. [0003] In the process of optical sheet preparation, in order to achieve a better observation effect, firstly, the sample is required to be r...
Claims
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Application Information
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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/28
CPCG01N1/28
Inventor 方明山肖仪武李磊郜伟付强
Owner BEIJING MINING & METALLURGICAL TECH GRP CO LTD
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