Determinants of Coal Fineness and Combustion

Speaking of pulverized coal in the previous section we get a lot of applications in industry, but also describes the production process of pulverized coal in india. Now we'll explore the factors that define the coal fineness and combustion conditions.

First, let's talk about the definition of the term coal fineness: coal fineness generally refers to a pulverized coal remain on the screen during the test trials accounted for the proportion of coal powder, sieve aperture unchanged, stay on top of the more fineness greater the more coarse pulverized coal. The following factors coal fineness of us affected, of course, pulverized coal fineness and mill about, mill adjustments separators according to achieve different fineness of pulverized coal. Control principles coal fineness depends on the type and quality of the coal. Coal is different, different pulverized coal quality, coal combustion temperature, the amount of exhaust gas produced by combustion is different. For bituminous coal , pulverized coal fineness can be relaxed, simply put, when the coal ash < = 20%, coal fineness should be fat content of 0.5-1.0 times; When the ash content of up to about 40% , the fineness should be a volatile content of 0.5 or less. For anthracite, studies have formulas for your reference : R <= (0.5-0.6) * V.

Having a coal fineness of determinants , we then say that the impact of burning coal fineness: the larger the total surface area of ​​the finer pulverized coal, the more exposure to the air, volatile analyze fast, easy to burn, burn more complete, the low volatile coal, coal should be detailed. Product of pulverized coal combustion, fly ash has been found to its commercial value and application of grinding of fly ash in concrete and chemical industries, has been recycling, but also improves the usability of cement, can be described as waste utilization, use of properly.