Dry rolling granulator for preparing granular threonine

The invention discloses a dry rolling granulator for preparing granular threonine. The dry rolling granulator comprises a feeding bin, an elevator, a mixing bin I, a mixing bin II, a roller press, a crusher and a screening machine, wherein the feeding bin corresponds to a hopper arranged on the elevator through a quantitative auger; one side of the top of the elevator corresponds to the mixing binI; the mixing bin I is communicated with the mixing bin II through a degassing auger; the mixing bin II is correspondingly connected with the roller press through a forced feeder; the roller press isconnected with the crusher; and the screening machine is arranged at the outlet end of the crusher. The device is reasonable in design, compact in structure, simple in technological process and convenient in operation. Powdery raw materials are directly processed into uniform particles by mechanical compression without additives after being processed by the equipment, the chemical properties of the raw materials are not d