Cement using desulfurized lime as retarder

The invention relates to a cement using desulfurized lime as a retarder. Powdery desulphurization waste residue "desulfurized lime" with the SO3 mass fraction of 16-19%, obtained after lime desulphurization of energy dissipating enterprises adopting coal and natural gas as main energy, is used as the retarder; and a mixture composed of granulating slag, fly ash, limestone, furnace slag, steel slag and gangue is used as a filling material to obtain cement with an excellent retarding effect and increased flexural and compressive strength, endows the "desulfurized lime" with use values, effectively reduce secondarpollution, reduce the production cost and obtain excellent product performances. A production method of the cement has the advantages of simple and stable process, large operating availability, realization of low energy consumption, good economic property and environmental protection in the preparation process, cheap and easily available raw materials, suitableness for industrial production, and good pr