Micro-channel reactor, iron precipitation method based on iron-zinc mixed solution and application

The invention provides a micro-channel reactor, an iron precipitation method based on an iron-zinc mixed solution and application. The micro-channel reactor comprises a liquid conveying mechanism and a reaction mechanism, the liquid conveying mechanism comprises a first liquid conveying assembly and a second liquid conveying assembly; the reaction mechanism comprises a first preheating micro-channel, a second preheating micro-channel, a mixing joint and a reaction micro-channel; the mixing joint is provided with a first liquid inlet passage, a second liquid inlet passage and a liquid outlet passage, the first liquid inlet passage is communicated with a liquid outlet of the first preheating micro-channel, and the second liquid inlet passage is communicated with a liquid outlet of the second preheating micro-channel; and the liquid outlet passage is communicated with the liquid inlet of the reaction micro-channel. According to the method, formation of impurity phases and co-precipitation of multiple metals can