Pseudo goethite method for removing iron in zinc leaching solution
A technology for goethite and leaching solution, applied in the field of removing iron in zinc smelting leachate by goethite method, can solve the problems of strict operating process conditions, long reaction and settling time, and high energy consumption, and achieves good filtration performance and improved The effect of reaction speed and energy consumption reduction
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[0022] The technical solutions in the present invention will be described in more detail below in combination with specific implementation methods.
[0023] The false goethite method provided by the present invention removes iron in the leach solution of zinc smelting, and has the following steps: under normal temperature conditions, the pH value of the leach solution is adjusted to 4.5 to 5 with calcium carbonate; hydrogen peroxide is slowly added to the solution, and the addition speed of the hydrogen peroxide is To keep the concentration of ferric iron in the solution less than 1 g / L, the total amount added is 2.2 times the mass of ferrous iron in the leaching solution. During the settlement process of goethite, the pH value of the leachate is always kept in the range of 4.5 to 5 by adjusting the amount of calcium carbonate added; finally, the goethite sediment is removed by filtration, and the process of iron removal and purification of the zinc smelting leachate is complet...
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