The invention relates to a
smelting reduction
recovery and thermal refining method for a rare-earth-
niobium-containing
slag mixture and belongs to the field of non-
blast furnace ironmaking and resource comprehensive utilization. The
smelting reduction
recovery and thermal refining method for the rare-earth-
niobium-containing
slag mixture comprises the following steps of (1) mixing rare-earth-containing
blast furnace slag and
niobium-containing
molten steel slag to form the rare-earth-niobium-containing slag mixture and controlling the temperature of the rare-earth-niobium-containing slag mixture within a set temperature range; (2) injecting oxidative gas and conducting
smelting reduction to reduce
iron oxide into metallic iron fully; and (3) conducting separation and
recovery according to different reaction devices. According to the method, the
rare earth, the
calcium component, the niobium component and the
phosphorus component in the slag mixture can be efficiently recycled; cold-state niobium-rare-earth-iron-containing materials can be processed and at the same time thermal refining of the slag can be realized, so that the efficient resource comprehensive utilization can be achieved. The method is short in reaction time, high in
metal recovery rate, low in production cost, strong in
raw material adaptability, large in
processing capacity, friendly with environment, high in
economic income and capable of solving the problems of efficient recovery and utilization of metallurgical resources and
heat energy effectively.