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The essence of the research was to develop a correlation dependence between the degree of limestone grinding and the efficiency of boiler flue gas desulfurization. The design of the Installation of Flue Gas Desulfurization (FGD) in the slurry of ground limestone begins with the assumption (based on literature data or experience gained from previously completed and operated installations) of a certain pH value of this slurry in the reactor tank. The reagent is not yet indicated, its extraction location, its chemical composition, grain size and reactivity are not determined. Application practice and economics of these processes have shown that calcium reagents are the most advantageous in application because of the general availability of limestone, its large mining resources, existing infrastructure for its extraction, the network of suppliers and the purchase cost acceptable by the recipients. On a global scale, more than 90% of the flue gas desulfurization plant is treated with limestone [1]. The effectiveness of the desulfurization process is high, and some believe that the decisive influence is on the degree of limestone fragmentation dissolution rate of CaCO 3  in the absorption slurry, its reactivity to absorbed SO 2 , the pH of the absorption slurry.

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Examination of the influence of macro and microscopic parameters of limestone on the effectiveness of gas phase desulphurisation according to the method of wet limestone