Method of preparing electronic grade nickel carbonate by sodium carbonate deposition

An electronic grade, sodium carbonate technology, applied in nickel carbonate and other directions, can solve problems such as the inability to meet the requirements of high-quality products, and achieve the effects of low cost, water conservation, and good economic value

Active Publication Date: 2007-08-15
JINCHUAN GROUP LIMITED +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] In this way, if raw materials containing sodium and chlorine are used to produce nickel carbonate, the products produced by the general process contain more sodium and chlorine, which cannot meet the requirements of high-quality products.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Prepare raw material solution: the Ni concentration of nickel raw material solution is 16g / L, analytically pure Na 2 CO 3 The concentration is 37g / L. 5mL nickel stock solution and 5mL Na 2 CO 3 Mix quickly at room temperature, stirring well. After 20min, 200mL nickel raw material solution and 145mL Na 2 CO 3 , After 100 min, the feeding was completed, and the system pH=7. Add 4.6mL of 200g / L NaOH solution, adjust the pH value to 8.3, keep warm, and stir slowly. After 1 hour, use self-made dimethylglyoxime test paper to check that there is no obvious red in the supernatant, remove the mother liquor by suction filtration, and disperse the precipitate into a slurry with dilute ammonia water with pH=8.0. Transfer to a 90°C oven for airtight aging, take it out after 17 hours and start washing, wash it three times until the filtrate is checked with silver nitrate solution for no large amount of white precipitate, then transfer to a 100°C oven, take it out for grinding ...

Embodiment 2

[0052] Prepare raw material solution: the Ni concentration of nickel raw material solution is 16g / L, analytically pure Na 2 CO 3 The concentration is 37g / L. 5mL nickel stock solution and 5mL Na 2 CO 3 Mix quickly at room temperature, stirring well. After 10min at 75°C, add 200mL nickel stock solution and 145mL Na 2 CO 3 , After 110 minutes, the feeding was completed, and the pH of the system was 7.0. Add 3.4mL of 200g / L NaOH solution, adjust the pH value to 8.0, keep warm, and stir slowly. After 45 minutes, use self-made dimethylglyoxime test paper to check that there is no obvious red in the supernatant, remove the mother liquor by suction filtration, and disperse the product into a slurry with dilute ammonia water with pH=8.0. Transfer to a 90°C oven for airtight aging, take it out after 15 hours and start washing, wash it for 3 times until the filtrate is checked with silver nitrate solution for no large amount of white precipitate, then transfer to a 110°C oven, tak...

Embodiment 3

[0055] Prepare raw material solution: the Ni concentration of nickel raw material solution is 78g / L, analytically pure Na 2 CO 3 The concentration is 67g / L. Mix 10mL nickel stock solution and 10mL Na 2 CO 3 Mix quickly at room temperature, stirring well. After 20min at 73°C, add 350mL nickel raw material solution and 350mL Na 2 CO 3 , After 170 minutes, the addition was completed, and the pH of the system was 7.0. Add 10.3mL of 200g / L NaOH solution, adjust the pH value to 8.0, keep warm, and stir slowly. After 65 minutes, use self-made dimethylglyoxime test paper to check that there is no obvious red in the supernatant, remove the mother liquor by suction filtration, and disperse the product into a slurry with dilute ammonia water with pH=8.5. Transfer to 90 ℃ oven, airtight aging, take out after 18 hours and start washing, after that, washing and drying methods are the same as above.

[0056] The main parameters of the product: w Ni =52.32%, w Na = 0.00831%, w Cl ≤...

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Abstract

The invention discloses a manufacturing method of electron-grade nickel carbonate through sedimenting sodium carbonate, which is characterized by the following: adopting soluble nickel salt as nickel source and sodium carbonate as sediment; co-flowing nickel salt solution and sodium carbonate solution; controlling pH value, temperature and aging condition; washing; drying; washing again; drying again; grinding into product.

Description

technical field [0001] The method for producing electronic-grade nickel carbonate by precipitation with sodium carbonate relates to a process for producing electronic-grade nickel carbonate by using soluble nickel salt as a nickel source and sodium carbonate as a precipitant. Background technique [0002] Anhydrous nickel carbonate is a green powdery substance, insoluble in water and easily soluble in acid. It is an important nickel compound in industry. It is mainly used to prepare nickel oxide and can be further reduced to nickel powder. [0003] Nickel oxide has good electroluminescence, thermosensitivity, and electrochemical activity, and is widely used in photoelectric conversion, battery electrodes, electrochemical capacitors, and high-performance catalysts. The methods for preparing nickel oxide mainly include precipitation-thermal decomposition method, solid-phase method, sol-gel method, etc., among which the precipitation-thermal decomposition method is the most con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G53/06
Inventor 陈胜利王玉华魏玉梅吕海波张昭彭少方刘昉李娜
Owner JINCHUAN GROUP LIMITED
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