Rotary autoclave

The invention discloses a rotating high-pressure autoclave which is used for crystal growth in a hydrothermal method. The autoclave body is connected with a rotating device which can cause the axial rotation of the autoclave body. The rotating device comprises an electromotor, and a transmission component and a rotation axis which are connected with the electromotor. The rotation axis and the autoclave body are coaxially arranged, mutually connected and can coaxially rotate. The electromotor drives the rotation axis to rotate through the transmission component. Under the action of inertia and friction force, liquid in a reaction chamber of the high-pressure autoclave moves and the motion functions as stirring, thus not only causing the liquid stream on the same horizontal level and the temperature in the autoclave body to tend to accord, but also causing the liquid between a solution area and a crystalline area to generate forced convection. The forced convection is beneficial to the exchange of energy and so