Method for removing iron from iron-containing solution

Abstract

The invention discloses a method for removing iron from an iron-containing solution. The method comprises the steps of supplying the iron-containing solution to a vertical reaction vessel, and introducing steam and oxygen so as to carry out first iron removal treatment in the vertical reaction vessel to obtain a first iron-removed slurry; supplying the first iron-removed slurry to a horizontal reaction vessel, and introducing steam and oxygen so as to carry out second iron removal treatment in the horizontal reaction vessel to obtain a second iron-removed slurry, wherein the iron-containing solution is a iron-containing sulfate solution, preferably, the iron-containing solution is at least one selected from an iron-containing sulfate solution, an iron-containing nickel sulfate solution, an iron-containing cobalt sulfate solution and an iron-containing copper sulfate solution. According to the method for removing iron from an iron-containing solution disclosed by the embodiment of the invention, due to the combination of the vertical and horizontal reaction vessel, the interruption of production due to the fouling problem of the reaction vessel in the iron removal process can be effectively addressed to ensure that the production process is continuously and stably operated, thereby significantly improving the iron removal efficiency and utilization rate of the device.

Description

technical field [0001] The invention belongs to the fields of chemical industry and metallurgy, in particular, the invention relates to a method for removing iron from an iron-containing solution. Background technique [0002] Iron usually enters the solution in the form of impurities in the wet smelting process of nickel, copper, and cobalt. In order to obtain relatively pure nickel, copper, and cobalt products, the iron in the solution is precipitated and removed before the product recovery process during the smelting process. , the commonly used methods are neutralization method, vitriol method, goethite method and iron oxide method, wherein neutralization method, vitriol method and goethite method have low iron content in the iron slag, and the iron slag usually enters the tail Stockpiling in ore warehouses, the products obtained by the iron oxidation method can be used as raw materials for cement and ironmaking or to produce iron red products due to their high iron cont...

AI Technical Summary

Problems solved by technology

For this reason, an object of the present invention is to propose a method for removing iron from iron-containing solutions, which can effectively solve production interruptions caused by problems such as scaling, ensure continuous and stable operation of production, and significantly improve the utilization of equipment At the same time, it can not only effectively solve the problems of iron slag tailings pond occupation and environmental pollution, but also effectively improve the recovery rate of other metals and increase the economic benefits of enterprises

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