Special road retarding cement

The invention discloses special road retarding cement, which is prepared from the following raw materials in percentage by mass: 85-88% of road silicate clinker, 2-3% of desulfurized gypsum, 2-3% of phosphogypsum, 2-5% of fly ash and 3-6% of superfine slag powder. The road silicate clinker is prepared by calcining limestone, sandstone, cyanide-containing waste residues and coal gangue. The methodis simple in process and convenient in manufacture. The special road retarding cement provided by the invention is simple in components and low in production cost, and a finished product obtained by fine organization production can reach the road retarding cement standard. 本发明公开了一种特种道路缓凝水泥，所述特种道路缓凝水泥包括以下质量百分比的原料，道路硅酸盐熟料85-88%，脱硫石膏2-3%、磷石膏2-3%、粉煤灰2-5%、矿渣微粉3-6%；所述道路硅酸盐熟料由石灰石、砂岩、含氰废渣、煤矸石为原料煅烧而成。本发明工艺简单，制作方便；本发明的特种道路缓凝水泥，组分简单，生产成本低，通过精细组织生产所获得的成品，能够达到道路缓凝水泥标准。