Horizontal type pressurization leaching reaction kettle

The invention discloses a horizontal type pressurization leaching reaction kettle comprising a kettle body, a plurality of separating plates and a coil pipe. The kettle body is provided with a first material inlet and a first material outlet; the plurality of separating plats are connected with the inner wall of the kettle body, and the kettle body is divided into a plurality of reaction chambers by each two adjacent separating plates which are spaced apart a predetermined distance; the coil pipe is arranged in one of the plurality of reaction chambers and is provided with an input end and an output end, and the output end of the coil pipe is connected with the first material inlet. According to the horizontal type pressurization leaching reaction kettle, the coil pipe arranged in the reaction chamber is used for preheating a leaching pre-liquid. During a reaction process, a heat exchanger is not required to be adopted to preheat the leaching pre-liquid, so that not only is the treatment efficiency of a sulfi