Method for preparing submicron molybdenum powder

The invention discloses a method for preparing submicron molybdenum powder, which comprises the following steps that: ammonium molybdate or molybdenum trioxide are put in a mechanical crusher to be crushed into fine-particle raw materials, and the fine particle raw materials are put in a material boat; the fine-particle raw materials in the material boat are subjected to the primary hydrogen reduction in a reduction temperature region in a primary reduction furnace, and the product of the primary hydrogen reduction is molybdenum dioxide; then the material boat filled with the molybdenum dioxide is directly pushed into a secondary reduction furnace, the molybdenum dioxide in the material boat is subjected to the secondary hydrogen reduction in a reduction temperature region in the secondary reduction furnace, and the product of the secondary hydrogen reduction in the material boat is molybdenum powder; and finally, the sub-micron molybdenum powder can be obtained by sieving with a 160-mesh screen. The method f