Cooling device of alumina decomposition pond

The invention relates to a cooling device of an alumina decomposition pond, which comprises a decomposition pond and a stirrer arranged in the decomposition pond. The cooling device is characterized in that a heat pipe is arranged at the top of the decomposition pond and extends into the decomposition pond through a hole reserved on a top plate of the decomposition pond, wherein a heated section L of the heat pipe is inserted into fluid of the decomposition pond for absorbing heat, and the heat is continuously conducted into a cooling section M through a working medium in the heat pipe; a spiral cooling water guide channel is welded between an external sleeve of the cooling section of the heat pipe and the heat pipe, circular cooling water enters the spiral cooling water guide channel through the cooling section and flows out from the top of the external sleeve of the heat pipe through the guide channel for carrying out heat exchange, thereby the aim of fluid cooling in the decomposition pond is achieved. The