A method and apparatus for preparing the silicate cement clinker from the liquid-state slag of blast furnace is disclosed. Said method includes such steps as pouring said liquid-state slag from slag ladle into intermediate ladle, continuously flowing in mixer while feeding the correcting material and fuel respectively from their cabins to the mixer via pipes, calcining to become molten cement clinker, cooling in cooling tower, discharging product, and exhausting the hot air to the heat-tube over-heater or heat exchanger to generate steam. |