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Method for producing electrolytic nickel using various nickel-containing raw material

A technology of electrolytic nickel and raw materials, which is applied in the direction of photographic process, instrument, photographic auxiliary process, etc., can solve the problems of complicated production process of nickel renewable resource recovery, increased consumption of precipitant and extractant, and increased burden of solution purification, etc. Achieve the effects of not being limited by the production scale, flexible production methods, and balanced nickel ion concentration and acid concentration

Inactive Publication Date: 2008-09-17
张建玲
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And even if a nickel electrolysis workshop is established, because the composition of nickel renewable resources is very complex, if the anolyte with high acid content produced in the electrolysis process is returned to the leaching process, the backlog of nickel in the production process will be increased, and the solution will increase. The burden of purification may also require repeated precipitation or extraction of nickel, which greatly increases the consumption of precipitants and extraction agents, correspondingly increases the cost, and complicates the production process of nickel renewable resources recovery
The same technology as described in the present invention has not been reported yet

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  • Method for producing electrolytic nickel using various nickel-containing raw material
  • Method for producing electrolytic nickel using various nickel-containing raw material

Examples

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Embodiment 1

[0036] Example 1: Production of metallic nickel by electrolysis and direct neutralization with an insoluble anode diaphragm. The initial electrode of the nickel plate is used as the cathode, and the anode plate is made of pure lead or lead alloy material. According to the composition requirements of the catholyte, boric acid (1-25g / L), sodium sulfate (70-150g / L), pure nickel sulfate (50 ~120g / L) and other trace additives, adding an appropriate amount of sulfuric acid to adjust the pH value to about 2.0-5.5, after the composition is qualified, heat it to about 40-80°C, pump it into the high-level liquid storage tank, and then flow into the electrolysis In the diaphragm bag in the tank, electrolysis starts, and the nickel ions in the solution are reduced to metal and deposited on the cathode to obtain pure metal nickel. Due to the continuous electrochemical reaction of water on the surface of the anode, oxygen is precipitated on the surface of the anode, and the anolyte continuo...

Embodiment 2

[0039] Example 2: Using a solvent extraction method to remove acid and supplement nickel insoluble anode diaphragm electrolysis to produce metallic nickel. Stainless steel is used as the cathode, and the anode plate is made of pure lead or lead alloy material. Boric acid (1-25g / L), sodium sulfate (70-150g / L), pure nickel sulfate (50-120g / L) are added according to the composition requirements of the catholyte. L) and other trace additives, add an appropriate amount of sulfuric acid to adjust the pH value to about 2.0-5.5, and after the ingredients are qualified, pump them into the high-level liquid storage tank, heat it to about 40-80°C, and then flow into the diaphragm bag. The electrolysis starts, and the nickel ions in the solution are reduced to metal and deposited on the cathode to obtain pure metal nickel. The catholyte penetrates into the anolyte through the diaphragm bag, and the anolyte continuously overflows from the electrolyzer, flows out of the electrolyzer, enters...

Embodiment 3

[0042] Embodiment 3: Using nickel hydroxide as a raw material as a neutralizing agent, the direct neutralization method of insoluble anode electrolysis is used to produce metallic nickel. The titanium plate is used as the cathode, and the anode plate is made of pure lead or lead alloy material. The sulfate system is used to prepare the electrolyte according to the requirements. During the normal diaphragm electrolysis process, the catholyte penetrates into the anolyte through the diaphragm bag, and the anolyte continuously overflows from the electrolytic cell and enters the low-level liquid storage tank. After purification and removal of impurities, the catholyte is pumped into the In the liquid-adjusting mixing tank, the concentration of sulfuric acid in the purified electrolyte changes within the range of 1-60g / L. Add a certain amount of nickel hydroxide into the liquid-adjusting mixing tank, adjust the pH value of the electrolyte to 2.0-5.5, pump the catholyte into the high...

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Abstract

A method using various raw materials containing nickel to prepare electrolytic nickel is provided. The materials containing nickel obtained from various nickel smelting and nickel renewable resource recovery processes are taken as the raw materials, sulfate system electrolyte solution is adopted, pure metallic nickel is prepared by the method of insoluble anode diaphragm electrolysis; the acidity of the anolyte is adjusted by the direct neutralization method or the solvent extraction method in the electrolytic process, nickel ion is supplied, acid concentration is lowered, thereby changing into eligible catholyte, returning to the electrolytic process realizes the balance of nickel ion and acid concentration in the whole electrolytic process; the electrolyte system adopts falcial sulphate liquor, nickel sulphate, sodium sulphate, and boric acid are prepared into the catholyte which mainly contains: boric acid 1-25g / L, sodium sulphate70-150g / L, and nickel sulphate 50-120g / L, vitriol is added to adjust the pH value to about 2.0-2.5; the acidity of the anolyte is adjusted by the direct neutralization method or the solvent extraction method.

Description

technical field [0001] The invention relates to a method for producing electrolytic nickel by utilizing different nickel-containing raw materials, and belongs to the fields of nonferrous metallurgy and renewable resource recovery. In particular, nickel oxide, nickel oxide, nickel sulfate, nickel chloride, nickel nitrate, basic nickel carbonate, nickel carbonate, nickel hydroxide, nickel oxalate, and Nickel leaching solution and the like are used as raw materials, and the technical method of electrolysis of aqueous solution is used to prepare high-purity metallic nickel products. technical background [0002] Nickel is a silvery-white metal. Due to its excellent physical and chemical properties, nickel is widely used in various fields of industry and daily life such as stainless steel, non-ferrous metal alloys, batteries, electroplating, chemicals, magnetic materials, and catalysts. It is called Strategic metals for the twenty-first century. At present, the output of metal ...

Claims

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Application Information

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IPC IPC(8): C25C1/08
Inventor 张建玲
Owner 张建玲
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