High-efficiency compost expanding agent

An efficient compost bulking agent, a bulking agent and a shell built-uniform magnetic seven small container configuration, bulking arcuate cusp shape of the housing a sheet, the adhesive composition consists of two plastic plates, with a uniform distribution of pore diameter of the surface 1mm holes; small container by the magnetic iron piece and the iron sheet cassette lid composition, the surface of the cartridge is evenly distributed holes with an aperture of 0.5mm, the internal magnetic 0.05g small container containing magnesium peroxide, magnetic, small containers wrapping a three-layer gauze and a bulking agent with a rope fixed to the housing. Advantages and benefits of the present invention are: 1) a sheet-like arcuate cusp shape design process in the reactor is stirred well loosened fertilizers; 2) the expansion agent can be slowly released from the inside of the stack automatically according to body temperature of the stack oxygen, to ensure the adequate supply of oxygen; 3) easy to operate, can be recovered by magnetic separation repeated use, without any pollution to the environment.