Lime: Limestone exist by itself material, the sulfur content of the fuel itself and calcination factors metallurgical limestone, lime generated by the limestone itself will contain different levels of sulfur, phosphorus and other elements of metallurgical limestone sales, for lime itself sulfur, low phosphorus content is required. And its former limestone (raw material) and low parathion is also a low content of the fuel requirements. Influence of Limestone Flour for wet flue gas desulfurization performance: from the wet desulfurization process can be seen in the main reaction Hebei Metallurgical limestone to absorb and neutralize flue gas SO2, the key is the formation of Ca2 +, which and limestone or limestone component powder (mainly CaCO3 content), fineness, reactivity, etc. are closely related. Quality limestone has a direct impact on the performance of wet flue gas desulfurization.