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Method for producing hydroxyl nickel from copper-nickel alloy

A technology of copper-nickel alloy and nickel hydroxy, applied in the field of producing nickel hydroxy, can solve the problems of difficult process control, increased energy consumption, difficult resistance of sealing materials, etc., and achieves the effects of reducing pressure, accelerating synthesis reaction rate, and improving activity

Inactive Publication Date: 2008-07-02
JINCHUAN GROUP LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high pressure of the production process, the process is difficult to control, the requirements for equipment are high, the sealing material is difficult to resist the corrosion of nickel carbonyl gas under high pressure, and the leakage of toxic gas nickel carbonyl often occurs. On the one hand, it will increase energy consumption, and on the other hand On the other hand, there will be explosion hazards caused by leakage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Weigh 1000kg of copper-nickel alloy, its main components are: Ni 65%, Cu 16.2%, Fe 1.98%, Co 2.01%, S 4.6%, put the copper-nickel alloy in a medium-frequency induction furnace to melt, and wait for the melt temperature When the temperature reaches 1400°C, wrap 10kg of elemental selenium with nickel skin and add it to the copper-nickel primary alloy melt to melt for 20 minutes, then water quench, and then add the copper-nickel water-quenched alloy to the reduction furnace for hydrogen reduction for 2 hours to obtain a particle size of 15-25mm The active water-quenched copper-nickel alloy particles are sent to the synthesis kettle as activated metal raw materials to participate in the carbonylation reaction. Put 1000kg of non-activated copper-nickel water-quenching alloy particles into the reaction kettle in two batches for comparative experiments. The synthesis pressure is 8-10Mpa and the temperature is 150-200°C. The carbonylation of unactivated raw materials and nickel ...

Embodiment 2

[0016] Weigh 1000kg of copper-nickel alloy, its main components are: Ni 65%, Cu 16.2%, Fe 1.98%, Co 2.01%, S 4.6%, put the copper-nickel alloy in a medium-frequency induction furnace to melt, and wait for the melt temperature When the temperature reaches 1400°C, wrap 20kg of elemental selenium with nickel skin and add it to the copper-nickel primary alloy melt to melt for 20 minutes. hours, to obtain activated water-quenched copper-nickel alloy particles with a particle size of 10-15 mm, which are sent as activated metal raw materials to a synthesis kettle to participate in the carbonylation reaction. Put 1000kg of non-activated copper-nickel water-quenching alloy particles into the reaction kettle in two batches for comparative experiments. The average reaction rate of 80% is 120L / h, and the carbonylation rate of water-quenched alloy raw materials after activation reaches 95.6%, and the reaction speed reaches 280L / h, which is significantly improved compared with unactivated r...

Embodiment 3

[0018] Weigh 1000kg of copper-nickel alloy, its main components are: Ni 65%, Cu 16.2%, Fe 1.98%, Co 2.01%, S 4.6%, put the copper-nickel alloy in a medium-frequency induction furnace to melt, and wait for the melt temperature When the temperature reaches 1400°C, wrap 30kg of elemental selenium with nickel skin and add it to the copper-nickel primary alloy melt to melt for 20 minutes. hours, to obtain activated water-quenched copper-nickel alloy particles with a particle size of 5-10 mm, which are sent as activated metal raw materials to a synthesis kettle to participate in the carbonylation reaction. Put 1000kg of non-activated copper-nickel water-quenching alloy particles into the reaction kettle in two batches for comparative experiments. The average reaction rate of 80% is 120L / h, while the carbonylation rate of water-quenched alloy after activation reaches 98%, and the reaction rate reaches 320L / h, which is significantly improved compared with unactivated raw materials.

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Abstract

The invention relates to a method for producing hydroxyl nickel with copper nickel alloy, which is characterized in that: copper nickel alloy raw material to synthesize the hydroxyl nickel is first melted; selenium powder used as catalyst is added to activate the nickel in the raw material; the melt of the copper nickel alloy is water quenched into alloy particles; the alloy particles are reduced and activated by hydrogen, and then are subject to hydroxylation systemization to obtain the hydroxyl nickel. The method of the invention adds non-metallic elements which are conducive to hydroxylation systemization such as selenium powder in the primary copper nickel alloy, and electron migration happens between the simple substance selenium and Ni2S3 in the alloy to generate new metal center to improve the activity of nickel atom and the existing form of nickel is changed during the reactivation process by pumping in hydrogen to reduce the raw material, thus the existing form of nickel oxide and sulfide can be changed into a simple substance form conducive to oxonation, thereby accelerating synthesis reaction and reducing pressure required in the reaction.

Description

technical field [0001] The invention relates to a method for producing nickel hydroxy by copper-nickel alloy. Background technique [0002] In the production process of nickel oxyhydroxide, carbonylation of copper-nickel primary alloy to form nickel carbonyl has been applied industrially. At present, its hydroxylation synthesis process needs to be carried out under 25MPa high pressure conditions. Due to the high pressure of the production process, the process is difficult to control, the requirements for equipment are high, the sealing material is difficult to resist the corrosion of nickel carbonyl gas under high pressure, and the leakage of toxic gas nickel carbonyl often occurs. On the one hand, it will increase energy consumption, and on the other hand On the one hand, there will also be a hidden danger of explosion caused by leakage. It is a problem to be solved to effectively improve the reaction rate of nickel carbonyl synthesis, reduce the reaction pressure, increa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G53/04C01G53/02
Inventor 张强林肖冬明李朝平刘旺生罗世铭王大窝
Owner JINCHUAN GROUP LIMITED
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