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Nickel Recovery

Seplite® LSC495 Bis-picolylamine Resins for Nickel Recovery from Laterite-nickel Resource

Nickel, a silver-white, hard, ductile and ferromagnetic metal element that is highly polished and resistant to corrosion. Nickel is a pro-iron element, so nickel-based minerals are mostly laterite nickel ore.

 

Nickel is often used for electroplating because of its good corrosion resistance. In recent years, nickel sulfate has been used as a ternary positive electrode material and has received much attention.

Driving by the strong EV demand, Nickel demand is increasing year by year, the traditional method of Ni recovery is by solvent extraction. Pretreatment by precipitating Fe3+ is needed before extraction. During the precipitation, max 10% Nickel would enter into the residues and are very hard to recover(high loss of nickel). On the other hand Saponification of the extractant will consume NaOH.

 

Seplite® LSC495 of Bis-picolylamine groups which is specially designed for direct extracting nickel from acid leaching liquors of laterite.

Our Technology Advantages

Suitable being used in strong acid liquors(0-2), no need to adjust PH

Suitable being used in high Fe content liquors(like 20,000ppm etc), no need to precipitating Fe3+

HIgh nickel loading capacity under PH 0-1

Much less nickel loss considering the whole process

Much smaller system leading to much less effluents, regeneration costs and equipment CAPEX

Special Chelating Resins for Nickel Extraction

SEPLITE® LSC495 Bis-picolylamine Resin has high selectivity to Ni and is not affected by Fe in solution. Therefore no pretreatment of Iron is needed which greatly decreases the loss of Ni. To regenerate LSC495, sulfuric acid was used, no-saponification process therefore decreases the overall OPEX.

The most important is that yield of resins to Ni being over 98%, which significantly decreased overall Nickel loss.

 

Sunresin has a lot knowledge for solvent extraction, LSC495 Bis-picolylamine Resins supplied another technical route for customer choices on nickel recovery.

As per the site conditions, different chelating resins could be used in this applications.

Seplite®

Type

Applicaiton

Equivalent

LSC495

Bis-picolylamine

Nickel & Cobalt recovery from strong acid (pH <2) solutions

Dow M 4195

LSC710

Iminodiacetic acid

Nickel & Coablt recovery for liquor PH above 4

Purolite S 930,LanxessTP 207

LSC773

Modified Iminodiacetic

Nickel & Coablt recovery with PH above 3

None

LSC724

Thiourea

High precision Mecury removal

Lanxess TP 214

LSC790

D2EHPA impregnated

Zinc recovery from cobalt concentration

Lanxess VP OC 1026

LSC772

Cyanex 272 impregnated

Cobalt removal from nickel sulfate solutions

Lanxess TP 272

Besides resins, Sunresin supply solution package including process design, equipment, pilot running etc

With same capacity, Sunresin SMB(stimulating moving bed) could greatly reduce the total resin quantity loaded,which decrease the CPEX.

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