A method for recovering nickel sulfate from copper smelting high-impurity high-nickel anode copper plate

Abstract

A method for recovering nickel sulfate from copper smelting high-impurity and high-nickel anode copper plate, the method is cast into high-impurity high-nickel anode copper plate after refining copper smelting high-impurity high-nickel anode copper plate, electrolyzing high-impurity high-nickel anode copper plate, recycling Filtration of the electrolyte, purification and removal of impurities on the electrolyte, deep recovery of nickel sulfate, cleaning of the nickel sulfate crystallization tank, and treatment of nickel anode slime, etc., have realized the recovery of nickel sulfate from high-impurity and high-nickel anode copper plates in copper smelting with high efficiency. The process The operation is simple, the environment of the operation site is clean and hygienic, the electrolytic refining system has a strong adaptability to high-impurity raw materials, the waste electrolyte has a large de-impurity treatment capacity, and the quality of the cathode copper product and the electrolysis efficiency are taken into account.

Description

technical field [0001] The invention belongs to the technical field of metallurgy and chemical industry, and in particular relates to a method for recovering nickel sulfate from high-impurity and high-nickel anode copper plates in copper smelting. Background technique [0002] With the gradual expansion of production capacity of major domestic copper smelting enterprises in recent years, the consumption of copper-containing materials such as copper concentrate and matte has been accelerated globally. In order to further pursue economies of scale, various enterprises have also put forward higher requirements for the grade of copper-containing materials such as copper concentrate and matte. However, with the rapid consumption of various copper-containing materials, we will gradually face the problem of how to deal with high-impurity copper-containing materials in the future. Therefore, how to improve the adaptability of existing technologies to materials and achieve efficient ...

AI Technical Summary

Problems solved by technology

If the raw material contains high arsenic, antimony, bismuth, lead impurity elements and high nickel content, it will directly lead to the production of anode copper plates containing high arsenic, antimony, bismuth, lead impurity elements, high nickel content, and insufficient copper grade.

For electrolytic refining of high-impurity and high-nickel anode copper, if the process is not handled properly, such as: the electrolyte composition is not controlled properly, impurity elements in the electrolyte will be precipitated on the cathode, which will directly lead to poor quality of cathode copper products, low product qualification rate, and enterprise production. Poor benefit and low efficiency

[0004] At present, only a very small number of copper smelting enterprises in my country can process high-nickel anode copper. The basic commonality of their anode copper is that the nickel content is high, but other impurity elements are generally low. When using nickel anode plates, it can only be electrolyzed at a low current density, so its production cycle is long and the production efficiency is not high. The follow-up recovery process of nickel in the electrolyte is relatively traditional, low efficiency, high consumption, and poor working environment , the quality of the by-product nickel sulfate is not ideal, the recovery efficiency of nickel is low, and nickel is enriched in the electrolyte for a long time, causing adverse effects on the quality of cathode copper products

[0005] When the content of dissolved impurity elements and nickel ions in the electrolyte is high, and when the specific gravity of the electrolyte is high and the viscosity is high, the suspended anode slime will increase, and the impurity elements will be ionized and separated on the cathode copper. The current density electrolysis process will lead to the growth of "particles" on the surface of the cathode copper, resulting in unqualified cathode copper product quality, making it difficult for large-scale copper smelting and processing enterprises to take into account the electrolysis efficiency and the cathode copper plate when electrolyzing high-impurity and high-nickel anode copper plates. High efficiency recovery of copper product quality and nickel sulfate by-product

Therefore, this method is rarely applied on a large scale in domestic enterprises

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