The invention discloses a method for
smelting ferro-
molybdenum from
ammonia leaching residue to recover
molybdenum. The method comprises the following steps: 1, the
ammonia leaching residue and an auxiliary material are added into a mixer to be mixed uniformly to obtain a mixture, wherein the auxiliary material comprises ferro-
silicon, ferro-
phosphorus, aluminum particles,
sodium nitrate and a fluxing agent, and the fluxing agent adopts
calcium oxide or
fluorite; 2, the mixture is loaded in a
smelting furnace, the surface of the mixture is covered with a layer of firelighter, and a
reaction product is obtained after ignition for
smelting; the
reaction product stands still so that iron is precipitated to form smelting residue and a ferro-
molybdenum ingot, the smelting residue is removed, the ferro-molybdenum
ingot cools naturally to be solidified, and the purpose of smelting ferro-molybdenum from the
ammonia leaching residue to recover molybdenum is achieved. According to the method provided by the invention, the ammonia leaching residue is mixed with the smelting auxiliary material on the basis of a
silicon-
aluminium thermal reduction method, and the smelting residue and the ferro-molybdenum
ingot are produced by a ferro-
alloy self-heating reaction technique, so that the effect of recycling molybdenum
metal is achieved; when used for smelting ferro-molybdenum to recover molybdenum in ammonia leaching residue, the method has the advantages of high
resource utilization rate, low smelting auxiliary
material consumption, small environmental
pollution and high
metal recovery rate.