Nickel Sulfate Collection System in Decopper Waste Liquid

Abstract

The invention relates to the field of chemical production and particularly discloses a collecting system for nickel sulfate in decoppered waste liquor. The collecting system comprises a vacuumizing device, a reaction kettle, a cooling crystallization groove and a filter, wherein a feeding end of the cooling crystallization groove is connected with a concentrated-liquor outlet of the reaction kettle, and a discharging end of the cooling crystallization groove is connected with the input end of the filter; and an extraction port of the vacuumizing device is connected with an exhausting port formed in the top of the reaction kettle. In use, the collecting system has the advantages that vacuum concentration, cooling crystallization and filtering treatment can be carried out on the decoppered waste liquor discharged and treated in the process of electrorefining pure copper, so that a crude product of nickel sulfate is obtained; therefore, not only are the production quality of electrolytic copper and the treatment amount of the decoppered waste liquor effectively guaranteed, but also the energy consumption of collection of the nickel sulfate is low and the environmental pollution is less.

Description

technical field [0001] The invention relates to the field of chemical production, in particular to a system for collecting nickel sulfate in decopper waste liquid. Background technique [0002] In the prior art, copper mining enterprises generally use electrolysis to refine pure copper. In the process of electrolytic copper, impurities such as nickel in blister copper will be electrolyzed simultaneously with copper and dissolved in the electrolyte composed of sulfuric acid and copper sulfate. To ensure the production quality of cathode copper, it is necessary to regularly discharge electrolytic waste liquid with high impurity concentration, in order to reduce environmental pollution and improve economic benefits. Copper mine enterprises first decopper the discharged electrolytic waste liquid, and then produce crude products such as nickel sulfate from the decopper waste liquid. At present, most enterprises use electrothermal evaporation to collect nickel sulfate from the dec...

AI Technical Summary

Problems solved by technology

Copper mine enterprises first decopper the discharged electrolytic waste liquid, and then produce crude products such as nickel sulfate from the decopper waste liquid. At present, most enterprises use electrothermal evaporation to collect nickel sulfate from the decopper waste liquid. However, in actual application, this method not only consumes high power, but also has low equipment processing capacity, so it is difficult to apply this method on a large scale in copper mining enterprises.

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