Agoracom Blog

Critical factors for success in rare earths and graphite

Posted by AGORACOM-JC at 2:13 PM on Wednesday, August 1st, 2012

Out of hundreds of juniors digging for rare earths and graphite, how can investors evaluate who can achieve production and sales? Gareth Hatch* examines the supply chain. Critical Metals Report interview.

Author: JT Long
Posted: Wednesday , 01 Aug 2012

Carpentersville, IL (Crititcal Metals Report) –

The Critical Metals Report: In your November interview with us, you said you were tracking more than 390 rare earth element (REE) projects, but probably only 8-10 of those would come onstream in the next seven years. Have those numbers changed? Why are the odds so long?

Gareth Hatch: The number of companies exploring for REEs in the past two years has actually crept up to over 440 projects. However, that estimate of the number of companies that will be successful in the next five to seven years may be generous. REEs occur all over the world, but only a handful of high-quality projects have what it takes both in the ground and above it to come to fruition. Couple those physical limitations with the fact that the capital markets are not an infinite source of funds, and you can see why the percentage is so low. It takes lots of money to bring these projects online and it has become pretty difficult in the last year to raise money. That means that some of these projects will wither and die for lack of capital. We are starting to see companies fall off the radar, leaving behind only a website with an error message. We are also seeing some companies changing their name to the next mineral of interest. Many such companies are early-stage prospect generators. They might only be interested in doing some exploration, finding something interesting and then moving on to the next project rather than starting with a world-class, phenomenal mineral resource and then building a company and long-term project around that.

Some prospectors explore with the supply-chain perspective in mind, focused on particular technology metals with the goal of developing a project, somewhere, for those metals. Taking the supply-chain point of view is one of the best ways to determine if a project will be successful, where success is defined as the economic production of metals and compounds, not the finding of a ten-bagger.

TCMR: Do you see end users’ participating in exploration in an attempt to build out a reliable supply chain?

GH: It’s not happening much in this sector, but we are starting to see some end users linking up with some of the more viable or advanced projects through partnerships, joint ventures or investments. That is definitely happening.

TCMR: You produce the TMR Advanced Rare-Earths Project Index that lists 42 projects in 13 countries with NI 43-101- or Joint Ore Reserves Committee (JORC)-compliant mineral resource estimates. How do you determine which of these projects are more advanced?

GH: One way to do an immediate first cut is to look at which projects not only have a resource estimate, but which also have an estimated mineral reserve. That’s the portion of the mineral resource that has been analyzed and deemed to be economically viable. Only a handful of companies have done the significant work required to get to that point.

TCMR: Is the light-versus-heavy ratio going to be important when companies start producing?

GH: It can be.

Most (though not all) of the companies closest to production at this point are dominated by light REE (LREE) projects. The mineralogy and the metallurgy required to process HREE minerals is a far more complex proposition. However, the end goal is potentially more worthwhile. I actually prefer to think in terms of “critical rare earths”-neodymium (a LREE), and four HREEs, europium, terbium, dysprosium and yttrium-rather than just lights and heavies.

Numerous companies focused on these critical rare earths are at the preliminary economic assessment (PEA) or scoping study stage, or have only just recently defined their resources. It will be several years before they come on-stream, if they come on-stream, but the materials that they might produce are particularly interesting from a future supply and demand dynamic. If any of them prove to have decent distributions or quantities of those materials, then they could be particularly attractive to the supply chain.

TCMR: You also produce a value metrics chart that maps the value of in-situ rare-earth oxides (REOs) per unit of mineral resources against the average value per unit of the finished, separated REOs. How might this chart help an investor make decisions about what projects will be economic in the long run?

GH: The x-axis of the chart represents the average theoretical value of each ton of the deposit contained in the resource estimate, by virtue of the presence of REOs (ignoring recovery rates). It is therefore dominated by the overall grade of total REOs (TREOs). If two deposits had identical minerals and REO distributions, but one was 3% TREO and the other was 6% TREO, we would expect to see an x-axis value for the latter twice the value of the former. I should note that the x-axis value has nothing to do with the overall size or tonnage of the deposit. All other things being equal, projects that have high values on the x-axis are likely to have lower unit costs for the physical processing of ores than those toward the left. You don’t have to move as much material to get the same amount of REOs out, assuming similar recovery rates.

The y- axis of the chart represents the comparative unit value of the suite of finished, separated products from the various deposits, assuming equal recovery rates for each REO. Deposits that contain greater distributions of the more valuable HREEs will have higher basket prices than others. The y- value has nothing to do with grade, nor does it take into account processing costs. Essentially, the higher a project is on the y-, the more likely it is to have greater relative distributions of the more valuable HREEs/critical REEs. If you can get the material out of the ground and if you can do the processing and if you can get through the metallurgical challenges and the separation challenges and you have a finished product, this is an indication, relatively, of what that might be worth.

Unfortunately, there is a roughly inverse relationship between the two metrics. Deposits that have high TREO grades tend to have lower quantities of higher-value HREEs; deposits that contain higher proportions of HREEs tend to have poorer grades. Rich deposits with high grades are dominated by the LREEs cerium and lanthanum. Projects that may buck that trend and have reasonably significant x and y values are particularly interesting to look at. It’s just a way of comparing and should not be construed as a quantitative measure of project quality. Not all REE companies are thrilled with me putting their projects on this chart, even though the numbers are based on public-domain information. I acknowledge that many other factors need to be considered, but it can be a helpful tool.

TCMR: You mentioned that processing is a big part of the REE equation. What role does the complexity of separation and processing play in determining whether an REE project will ultimately come to market economically?

GH: I think it’s probably the most critical factor right now. To a large extent, you can live with differences in grade of material. You can probably even live with a project in a remote location. Ultimately, success hinges on the economics of processing, metallurgy and separation. There are two parts to it: There is the initial physical processing-mining, grinding and liberating the minerals from the rock. Then there is the chemical side-the extraction of the REEs from the mineral to produce a mixed REE concentrate and separation of the individual REEs from each other.

If a company stops at the concentrate stage with a mixed REE carbonate, chloride, or some other compound, without going to the next step and separating, it is losing a lot of the potential value. Obviously, a company avoids capital costs by not building a separation facility, but the best value is gained by going all the way to separation. This is what will make or break many of these projects.

TCMR: You’ve also started a TMR Advanced Graphite Projects Index. Many people are calling graphite the REE of 2012. Graphite is also used in new technology applications, such as hybrid cars and green energy, but is the label applicable if the same processing and supply constraints don’t apply?

GH: It may be the “REEs of 2012″ from the retail investor’s point of view-trying to find some hidden gems in the junior-mining sector and seeing a swift appreciation in value before everyone jumps on the bandwagon. There are a few important differences, however. I always try to take the supply-chain perspective. China dominates production in both REEs and graphite, but not to as dominant a scale when it comes to graphite. It’s closer to 70%, rather than the 95% estimated for REEs. However, most of the market is synthetic graphite. That is how demand from a number of applications has been met to date and that is an important factor in the supply-demand equation. That said, so-called large-flake graphite has become particularly attractive for certain applications, such as battery manufacturing. That could increase the demand for natural graphite sources that contain such flake sizes.

We have started to see an increase in the number of companies that have announced graphite projects, similar to the way that REE and uranium projects popped up in recent years. As of July, TMR is tracking 159 graphite projects under development, associated with 82 different companies in 18 different countries outside of China. There is something of a frenzy going on today. If market penetration of electric vehicles takes off, as some say, then that will increase the demand for lithium-ion batteries, which, in turn, could significantly increase demand for graphite-an important component of such batteries.

TCMR: Which companies are advanced enough to help meet future graphite demand?

GH: We shouldn’t forget that non-Chinese graphite producers are out there. No doubt companies like these are gearing themselves up for future demand. A number of natural graphite exploration projects have been quietly under development for some time, only recently coming into the spotlight because of investor interest in “the next big thing.” Some could be of genuine interest to the market because of the presence of larger-flake graphite. Formerly producing mines are also worth considering. There is room for a number of new sources of supply of natural graphite. However, as I said before, the level of demand will depend on the rate of market adoption of electric vehicles requiring lithium-ion batteries. Market penetration could increase sharply if battery prices come down, leading to the predicted significant increases in demand for large-flake, natural graphite. On the other hand, if the battery manufacturers are not able to reduce the unit costs of these batteries, then market penetration will be limited. This latter point is very important to bear in mind. A lot of investors that I’ve spoken with seem to be oblivious to this possibility.

The other potential driver that is a bit further off is graphene, a new “wonder” material based on graphite. Graphene is formed from a single layer of graphite, one atom thick, and has some amazing properties. It sometimes sounds a bit like the stuff of science fiction, but it is a real material, and as a materials scientist by training I find the possibilities quite exciting. The challenge has been how to produce it in commercial quantities, so it could be some time before it has a direct impact on the graphite market. But in the long term, it’s something to watch.

TCMR: A lot of graphite companies have come forward recently. As of July, you have 10 projects in three countries that were included in your Graphite Index as having met the minimum criteria for inclusion. How many of these projects could be successful? Which ones have the best chances?

GH: It could be any of those projects. They have all either done enough work to define a resource estimate, or are formerly producing mines and are in the process of finalizing such estimates. So they have the minimum understanding required of what they have in the ground. One of the tricky things about graphite project development is that you don’t actually know what flake size you have until you’ve done a bit of processing.

TCMR: Can you give us an idea on the timing? How many years are we talking about before some of these companies start producing?

GH: Compared to the REE sector, graphite has a much shorter time frame. Environmental impact studies and logistics still have to be addressed, but from a processing point of view, graphite is a much easier proposition than REEs.

TCMR: You mentioned that the type of graphite matters. You have charts for the average grade and quantity of in-situ graphite for each of the projects. How important is grade in graphite? Is flake size more important in graphite than maybe some of the quality issues in REEs?

GH: Grade is always important from a production cost point of view, but flake size is at least as important. Just as the distribution of REEs in a rare-earth deposit can determine market value, graphite flake size impacts the price. The extra large- or large-flake graphite portion of a deposit is worth a lot more money, just as some of the HREEs are worth a lot more money.

We’ve just published details on the flake-size distribution for each of these projects, for the first time. Unlike the REE space, where everyone knows what terbium, lanthanum and cerium are and you can go to any chemistry lab and test for the presence of these elements, characterizing a graphite deposit in terms of flake size is something of an arbitrary process. Graphite is categorized according to the mesh sieves through which material does or does not pass but there is no standard set of mesh size ranges in use at present. There is also a lack of consistency from one company to another in the definitions of terms such as “large”, “medium” or “fine” to describe categories of flake size. Anyone looking at these projects must be aware of this-you might not be comparing apples to apples when looking at those terms only. Make sure to look at the mesh-size ranges used.

TCMR: What advice would you give our readers about getting into either the REE or graphite market right now?

GH: Always spend some time looking at any of these projects from the supply-chain perspective. Demand for these materials is driven by the needs of companies to get metals and materials to make things, not to quadruple an upstream mining company’s share price. The supply chain doesn’t care who succeeds, for the most part, only that some succeed. A lot of information is out there on all of these projects. Look at the technical side at least as closely as share structure, management team and so on. I find it easier to analyze projects run by Canadian-based companies simply because we get access to a lot more information on resource estimates and technical reports than in some other markets. But either way, take the time to understand the demand drivers. Do your homework so that you understand the sector.

TCMR: That is great advice. I thank you so much for taking the time to talk to us.

GH: Thank you.

*Gareth Hatch is a founding principal of Technology Metals Research, LLC. He is interested in helping people understand the challenges associated with the growing demand for rare earth elements (REEs) and other critical and strategic materials. He is also a co-founder of Innovation Metals Corp., a provider of downstream processing and marketing services to the strategic metals industry. For several years, Hatch was director of technology at Dexter Magnetic Technologies. He holds five U.S. patents on a variety of magnetic devices. A two-time graduate of the University of Birmingham in the U.K., Hatch has a Bachelor of Engineering in materials science and technology and a Ph.D. in metallurgy and materials. He is a fellow of the Institute of Materials, Minerals & Mining, a fellow of the Institution of Engineering & Technology, a chartered engineer and a senior member of the Institute of Electrical and Electronics Engineers (IEEE). Hatch is also a member of the Strategic Materials Advisory Council.


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