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A new method for extracting metal nickel from laterite nickel ore leach solution

A technology for laterite nickel ore and metal extraction, which is applied in the direction of improving process efficiency and can solve the problems of inoperability and production practice.

Active Publication Date: 2021-08-27
SUNRESIN NEW METERIALS CO LTD XIAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is mainly to propose a device structure and fluid distribution method, which does not involve a specific production process and method, and is not operable and practical for production.

Method used

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  • A new method for extracting metal nickel from laterite nickel ore leach solution
  • A new method for extracting metal nickel from laterite nickel ore leach solution
  • A new method for extracting metal nickel from laterite nickel ore leach solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046]Laterite nickel ore leaching solution, eluent-pure water, desorption solution-15% (W / W) sulfuric acid aqueous solution, and desorption qualified solution respectively pass through the rotary switching valve system 1 located in the channel (the diameter of the valve port is 1.5 inches, and the rotation switching time 1h) Feed pipe 3 for laterite nickel ore leaching liquid, feed pipe 4 for eluent, feed pipe 5 for desorption liquid, feed pipe 7 for desorption liquid on the top and bottom of the turntable, through the channel to rotate and switch the inner channel of the valve system After entering the corresponding resin column 6 with the channel respectively (filling Lanxiao Technology to extract nickel chelating resin LSC-930, produced by Xi'an Lanxiao Technology New Materials Co., Ltd.), from the laterite nickel ore leaching solution discharge pipe 8, The eluent discharge pipe 9, the qualified liquid discharge pipe 10, and the adsorption tail liquid top desorption liquid ...

Embodiment 2

[0054] Laterite nickel ore leaching solution, eluent-pure water, desorption solution-10% (W / W) sulfuric acid aqueous solution, and desorption qualified solution pass through the rotary switching valve system 1 located in the channel (the diameter of the valve port is 1.5 inches, and the rotation switching time 3h) Feed pipe 3 for laterite nickel ore leaching liquid, feed pipe 4 for eluent, feed pipe 5 for desorption liquid, feed pipe 7 for desorption liquid on the top and bottom of the turntable, through the channel to rotate and switch the inner channel of the valve system After entering the corresponding resin column 6 with the channel respectively (filling Lanxiao Technology to extract nickel chelating resin LSC-930, produced by Xi'an Lanxiao Technology New Materials Co., Ltd.), from the laterite nickel ore leaching solution discharge pipe 8, The eluent discharge pipe 9, the qualified liquid discharge pipe 10, and the adsorption tail liquid top desorption liquid discharge pi...

Embodiment 3

[0062] Laterite nickel ore leaching solution, eluent-pure water, desorption solution-18% (w / w) sulfuric acid aqueous solution, and desorption qualified solution respectively pass through the rotary switching valve system 1 located in the channel (the diameter of the valve port is 1.5 inches, and the rotation switching time 2h) Feed pipe 3 for laterite nickel ore leaching liquid, feed pipe 4 for eluent, feed pipe 5 for desorption liquid, feed pipe 7 for desorption liquid on the top and bottom of the turntable, through the channel to rotate and switch the inner channel of the valve system After entering the corresponding resin column 6 with the channel respectively (filling Lanxiao Technology to extract nickel chelating resin LSC-930, produced by Xi'an Lanxiao Technology New Materials Co., Ltd.), from the laterite nickel ore leaching solution discharge pipe 8, The eluent discharge pipe 9, the qualified liquid discharge pipe 10, and the adsorption tail liquid top desorption liquid...

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Abstract

The invention provides a new method for extracting metal nickel from the laterite nickel ore leaching solution. The whole process of the method includes the following steps: the laterite nickel ore leaching solution enters the resin tower from the raw material tank through the feed pipe, The nickel ions in it are adsorbed and enriched by the resin; after the resin is saturated, the eluent enters the resin tower through the eluent feed pipe, and the laterite nickel ore extract that has not been adsorbed by nickel is washed back into the raw material tank for the next time. adsorption steps. Compared with the conventional fixed bed system, the method can increase the utilization rate of the resin by more than 20%, increase the utilization efficiency of the resin by more than 40%, and reduce the production cost by 30-50%. And the channel rotary switching valve system adopts full sealing and interval operation between extraction liquid adsorption and material top water, which reduces water consumption and waste water discharge during the whole operation process, improves production reliability, and can realize non-stop throughout the year run.

Description

technical field [0001] The invention relates to a continuous ion exchange method for recovering metallic nickel from laterite nickel ore leach solution by using an advanced continuous ion exchange device, belonging to the field of hydrometallurgy. Background technique [0002] In the process of wet mining laterite nickel ore and purifying and recovering nickel in the laterite nickel ore leach solution, the current production methods mainly include reduction roasting-ammonia leaching process and atmospheric pressure acid leaching process. The reduction roasting-ammonia leaching process is to reduce and roast laterite at 700°C into nickel and cobalt alloys, and then undergo multi-stage countercurrent ammonia leaching, cobalt, nickel, etc. enter the leaching solution, and the leaching solution undergoes sulfidation and precipitation, and then the mother liquor is precipitated to remove iron and ammonia, and the output Basic sulfate, after calcination, it can produce nickel oxid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B23/00C22B3/24
CPCC22B23/0453Y02P10/20
Inventor 余佳郭福民李岁党刘琼寇晓康
Owner SUNRESIN NEW METERIALS CO LTD XIAN
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