Heat exchanger for pressure leaching process

The utility model provides a heat exchanger for a pressure leaching process. The heat exchanger comprises a cylinder, a liquid inlet pipe, a liquid outlet pipe, a plurality of heat-exchange pipes, an air inlet pipe and an air outlet pipe, wherein the front end and the rear end of the cylinder are respectively provided with a front end enclosure and a rear end enclosure; the liquid inlet pipe and the liquid outlet pipe are arranged on the cylinder and are communicated with the interior of the cylinder; the plurality of heat-exchange pipes are arranged in the cylinder; and the air inlet pipe and the air outlet pipe are arranged on the cylinder, the air inlet pipe is communicated with one ends of the plurality of heat-exchange pipes, and the air outlet pipe is communicated with the other ends of the plurality of heat-exchange pipes. Therefore, according to the heat exchanger for the pressure leaching process disclosed by the utility model, by means of heating liquid inside the cylinder by using steam inside the