Understanding Dysprosium Criticality, page-4

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ContraryJ

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11/11/22

03:06

Post #: 64706244
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Originally posted by Chemist1959: ↑

A couple of graphics and links for those interested.

from Jun 2022: Materials | Free Full-Text | Recovery and Separation of Dysprosium from Waste Neodymium Magnets through Cyphos IL 104 Extraction | HTML (mdpi.com)
This is the determined composition of real-world EV motor magnets sent for recycling and obtained by the researchers:

Note that Nd/Dy = 20.73/3.55 = 5.8. A far cry from those who cry "30:1", but then these were EV motor magnets not overall usage.
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Second article from July 2022 (paywall for most, I suspect)
Significant enhancement in the coercivity and thermal stability of bulk hot-deformed Nd-Fe-B magnets by intergranular addition of Nd-Dy/Tb-Cu-Ga alloys - ScienceDirect
This work looked at using a low-melting gallium alloy (Ga melts at body temp as I recall) to enhance the subsequent Dy diffusion.

What you see here is an excerpted figure that shows current work (stars) as well as a literature search of recent Chinese efforts to lower Dy usage by more effective "GBD" by multiple methods; as you can see, some compare well with current grades of sintered and HD magnets (dotted lines) which span 3-8% and 2-6%, respectively. But in general, the experimental grades below 2% Dy have significantly lower coercivity H, one of the two most important properties of magnets that determines BH(max).

NOTE: GBD is an imprecise term. It was initially used to describe a vapor phase method where the DyTb was applied after the magnet was sintered. It is only sometimes used for solid state two-powder methods.

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Very interesting article I learned a lot and thank you for it.

I still ask for you to make some linkage between Lynas profits and Revenue.

All you need to do is show price and volume multiply and compare with current numbers to show impact.

Its just like NdO it will go up in price and demand but until you compare it with total market not just EVs and Wind hard to know impact.

Last edited by ContraryJ: 11/11/22

LYC Price at posting: $8.91 Sentiment: Sell Disclosure: Not Held
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0 Great analysis

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