1, the industrial analysis of coal refers to the determination of water (m), ash (a), volatile matter (v) and fixed carbon (Fc) of coal. The industrial analysis of coal is the main index to understand the characteristics of coal quality and the basic basis to evaluate coal quality. Usually, the moisture, ash and volatile matter of coal are measured directly, while the fixed carbon is calculated by difference subtraction. Broadly speaking, the industrial analysis of coal also includes the determination of total sulfur and calorific value of coal, which is also called industrial analysis of coal. According to the analysis results, the contents of organic matter and calorific value in coal can be roughly understood, so as to preliminarily judge the types, processing and utilization effects and industrial uses of coal. According to the industrial analysis data, the calorific value of coal and the yield of coking products can also be calculated. The industrial analysis of coal is mainly used in coal production and mining, commercial departments and various coal users, such as coking plants, power plants and chemical plants.

2. Composition analysis of coal ash: The composition of coal ash is complex, mainly composed of oxides and salts of silicon, aluminum, iron, titanium, calcium, magnesium, sulfur, potassium, sodium and other elements. The analysis results are reported in the form of oxide mass percentage.

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