Hi Solarbat,I'm no expert by any imagination.To me the process...

First 3 Last

Share
Profile

Follow
Lowkeyinvestor

4,813 Posts.

1829

26/04/20

19:49

Post #: 44265828
Share

Originally posted by Solarbat: ↑

Hi all, hi @procrastinato - hope you're well!

Does anyone here have the expertise to please explain this recent Nickel/ Cobalt extraction research paper, published recently in Science Direct? Developed in part by Uni Queensland, the process looks like it could make processing significantly cheaper - though I'm not sure what type of resources the approach is applicable to? Laterites?

Thanks in advance,

Solarbat

Thoughts? Link and abstract below.
Processing mixed nickel‑cobalt hydroxide precipitate by sulfuric acid leaching followed by selective oxidative precipitation of cobalt and manganese

Abstract:

In this study, an alternative method for processing mixed nickel‑cobalt hydroxide precipitate to separate the nickel from cobalt and manganese is proposed and evaluated. The proposed method comprises a leaching step using sulfuric acid to dissolve the nickel and cobalt from mixed hydroxide precipitates, and subsequently, an oxidative precipitation step to separate the dissolved nickel from cobalt and manganese using ozone as the oxidant. The results of the leaching experiments showed that 97% and 96% of the nickel and cobalt can be dissolved in the leaching step while leaving 92% of the manganese in the residue using 1.0 mol/L sulfuric acid solution at 25 °C, a slurry density of 100 g/L and leaching duration of 2.5 h. The results of the oxidative precipitation experiments showed that complete precipitation of the dissolved cobalt and manganese can be achieved using ozone as oxidant with nickel co-precipitation of about 8.8% at 25 °C, equilibrium pH of 5.0, oxidant gas flow rate of 1 L/min and precipitation duration of 2 h. The ability of ozone to affect cobalt and manganese oxidation into their higher valence enables their precipitation as cobalt oxyhydroxide and manganese dioxide, respectively, and their separation from nickel was demonstrated in this study.

Expand

Hi Solarbat,

I'm no expert by any imagination.

To me the process seems to relate to a metal extraction from an already mixed nickel/cobalt/manganese hydroxide product.

Battery manufacturers might be interested in my view.
2 Upvote

Reply

Top Stories

Friday's HotCopper trends: Renascor concentrate, Larvotto raise | July 25

Rokeby, BHM, more: The 10 hot stocks HotCopper users watchlisted in Week 30

ASX Market Close: Fading miners drag bourse as iron ore price slumps | July 25

SGQ

St George banks $5M from placement to ramp up Araxá Rare Earths Project

RNU

Renascor produces graphite concentrate at Siviour, right on time to meet ex-China demand

ASE

Astute delivers high-grade lithium hits at Red Mountain

FTL

Firetail scoops up untested land around Excelsior – including juicy mineralisation target

Listen: HotCopper Wire Podcast 019 – Dreaming of the 9,000s

Most investors will get this earnings season wrong. Will you?

What is going on here? Watch out for DroneShield, Pure Hydrogen, and Nel ASA