Method for determining chemical components of coal ash
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A technology for chemical composition and determination method, applied in the field of chemical analysis, can solve the problem of time-consuming and other problems, and achieve the effects of simple operation, reasonable sample dosage and strong adhesion
Inactive Publication Date: 2018-02-13
LIUZHOU IRON & STEEL
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[0004] The purpose of the present invention is to provide a method for measuring the chemical composition of coal ash, which can solve the time-consuming problem of the existing method for measuring the chemical composition of coal ash
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[0030] Below in conjunction with embodiment the present invention is described in further detail:
[0031] 1. Embodiment
[0032] The determination method of coal ash chemical composition comprises the following steps:
[0033] A. Coal analysis sample processing: select coal analysis samples, pass through 120-200-mesh molecular sieves, and dry them. The selected coal analysis samples are 8 grams to 15 grams, placed in porcelain ash dishes, and burned at 800 ° C to 900 ° C. After 4 hours to 5 hours, take out the porcelain ash dish, let it cool slightly, and then put it in a desiccator to cool;
[0034] B. Preparation of coal ash samples: Weigh coal ash and microcrystalline fiber with a mass ratio of 1-2:1, mix well, use a tablet press with a pressure of 25T-50T, hold the pressure for 30-80 seconds, and press into coal gray sample;
[0035] C. Establish a working curve: use an X-ray fluorescence spectrometer to analyze a standard sample and establish a working curve for each ...
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Abstract
The invention discloses a method for determining chemical components of coal ash and relates to the technical field of chemical analysis. The method disclosed by the invention comprises the followingsteps: drying a coal analysis sample, performing high temperature sintering, and cooling to obtain coal ash; mixing with microcrystalline fibers, preparing a coal ash sample, adopting an X-ray fluorescence spectrometry, selecting the optimal analysis conditions, and then simultaneously analyzing twelve chemical components such as iron, calcium, magnesium, potassium, sodium, manganese, phosphorus,silicon, aluminum, titanium, sulfur and copper in the coal ash within about 10 minutes. The method is simple and convenient to operate, accurate and rapid in result and wide in application range and has high precision.
Description
technical field [0001] The invention relates to the technical field of chemical analysis, in particular to a method for measuring the chemical composition of coal ash. Background technique [0002] Coal is one of the important raw materials in iron and steel smelting. Coal ash is formed after burning at high temperature. The main components of coal ash are silica, alumina, ferric oxide, ferrous oxide, and a small amount of calcium oxide and oxide Magnesium, etc., the content of silicon dioxide, calcium oxide, potassium oxide, sodium oxide and other chemical components in coal ash has important guiding significance for the calculation of melting characteristics and different slagging methods in the smelting process. [0003] At present, the contents of iron, calcium, magnesium, potassium, sodium, manganese, phosphorus, silicon, aluminum, titanium, sulfur, copper and other components in coal ash are analyzed by chemical analysis methods. For example, the determination of silic...
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