Obviously talking about aero engines, why is this pulling to the volcano again, the span is too big, and I can't touch the tonality at all.

Don't worry, you can listen slowly, the story is a bit twisty and bizarre.

First of all, sulfur, which is the most abundant mineral resource in volcanic ash, but it is difficult to find volcanoes in the territory of the Republic, not to mention active volcanoes, and even extinct volcanoes, so this sulfur ore is even more scarce, and it needs to be imported in large quantities every year.

Looking at the entire East Asian region, the undeveloped island of Iturup is the best solution to the domestic sulfur shortage, and this guy is still an active volcano, in addition to the historical accumulation of volcanic ash, there is a steady new production every year, plus the proximity to the Republic, convenient shipping, no matter how you look at it, it is the best way to solve the shortage of domestic sulfur resources.

There is no doubt that under the slogan of exploiting sulfur resources, Maozi has no doubts.

It is also after spending a lot of money to get the 50-year mining right of the volcanic resources, here quickly send people to settle in, go to the horse, enclose the land, start construction, and the ones that should be fenced must be fenced, as for the Russian land and resources exploration personnel, sorry, the volcanic resources mining rights here have been sold exclusively, please go elsewhere!

It's just an active volcano that spews sulfur, and now that the mining rights have been sold, of course, there is no need to spend too much energy.

However, what these Russian explorers never expected was that they missed a major discovery that changed the pattern of the global rhenium metal market, because the ash erupted by Kudryavi Volcano contained a precious metal: rhenium in addition to a large amount of sulfur.

A super-precious strategic metal, the world's annual mining capacity is only about 40 tons, and of this scarce production, up to 70% of the production is absorbed by the aero engine industry.

Among them, Rolls-Royce in the United Kingdom alone uses 28% of the world's rhenium production, General Electric in the United States also uses about 28%, and Pratt & Whitney uses another 12%.

The importance of rhenium is mainly reflected in the aero-engine industry, except for this place, other fields rarely use this kind of thing, because it is completely unnecessary, but on the other hand, its importance in the aero-engine industry is too prominent.

As the most critical high-temperature single crystal material for the manufacture of gas turbine engines, most of these things are nickel-based single crystal superalloys, since Pratt & Whitney used PA1480 single crystal for F-100 engines, and then the development trend is that the rhenium content continues to increase.

The first generation of PA1480 did not contain rhenium, but from the second generation of single crystal, people began to add rhenium to the alloy, and at this time it only contained 3%, and in the third generation, that is, the era of F-119 engines, the rhenium content of single crystal blades soared directly to 6%.

The Americans were the first to add rhenium to the single crystal alloy, so they obtained a generation of performance monster F-100, and after feeling the benefits of rhenium, they immediately began to deploy globally, almost controlling more than 80% of the world's rhenium metal production and sales (except Russia).

After directly controlling more than 80% of the rhenium production and sales, the Americans can indeed do whatever they want, so they vigorously added rhenium to the single crystal blades of F-199, and forced up the performance data against the sky.

As allies, Britain and France, of course, can buy rhenium metal products from the Americans, and there is nothing wrong with this.

But the republic is not good, and no one knows about the relationship between China and the United States, since the rhenium element is controlled by the Americans, and the domestic rhenium reserves are pitifully small, and most of them are associated ores, and the extraction technology is not very good.

There is no way, the country can only stiffen its head, and the labor-management monocrystalline blades do not use rhenium elements, or use less.

For this reason, the domestic aero engine industry is subject to the restrictions of metal raw materials, and the Yankees directly artificially set up a big pit for the domestic aero engine industry.

In the 60s, according to the current situation of lack of nickel resources in China, Shi Lao creatively developed iron-based superalloys, and has been insisting on using them for decades.

Later, after the discovery of several large nickel mines in China, nickel-based superalloys were gradually used in high-temperature parts of aero engines, but if this thing does not contain rhenium, it is still difficult to improve performance!

Including the core machine of the peak duel between the 624 Institute and the 606 Institute, its high-temperature turbine still contains only a very small amount of rhenium, which is forced by the situation and has to be done.

Well, now Wang Zhengguo has successfully taken the Kudryavi Volcano, the first batch of equipment has long been installed in place, after a simple preliminary processing of the volcanic ash, semi-finished raw materials are frantically shipped from the port, and the domestic port has long been prepared, as soon as the things are in place, they can be packed into boxes to the secret factory for purification and processing.

What is very interesting is that the rhenium element contained in the Kudryavi volcanic ash is actually pure rhenium, which can be easily separated from sulfur, and compared with the associated rhenium ore in the world, which also requires a variety of complex purification methods, the cost is simply low and terrifying.

As far as the international rhenium metal market is concerned, the price of this thing is comparable to gold, and Wang Zhengguo is equivalent to extracting it from sulfur ore waste residue, and the extraction cost is also low.

According to the plan, the follow-up will also make efforts to transport a large number of semi-finished sulfur ore from Kudryavi Volcano to China, and it is expected that the annual sulfur output will be about 300 tons, although it has far exceeded the needs of the domestic sulfur market, but in order to hoard precious rhenium, this problem will be endured, and the excess sulfur will be exported.

If you want to talk about rhenium production, this is expected to reach at least 50 tons per year, although the domestic gas turbine engine industry consumes up to 5 tons a year, but this still can't stop Wang Zhengguo from hoarding a large amount of rhenium metal.

Anyway, the rhenium from the Kudryavi volcano costs almost nothing, and this thing doesn't take up space, after a few decades, it is indispensable to be able to stock up on thousands of tons, you know, this thing is comparable to gold, if you can really sit on a thousand tons of gold, this is a real fucking thrill.

After 2000, the official national gold reserves of the republic were only about 1,000 tons, so what does this mean?

I, Wang Zhengguo, am about to become rich!

Of course, if it is really known that Wang Zhengguo has 1,000 tons of pure rhenium in hand, and then compare and look at the annual production and sales volume of less than 50 tons in the international market, as long as he is willing, he can instantly collapse the rhenium metal market, anyway, it is so awesome.

As for why it is only signed for 50 years, in fact, the problem is very simple, on the one hand, the Russian law stipulates that the mining industry can only be signed for such a long time, on the other hand, rhenium metal is mainly supplied to the aero engine industry, and after the next 50 years, high-temperature turbine materials must be the world of ceramic matrix composites, and at that time, rhenium metal should not be so important.

In a word, looking for an opportunity to go back, it is still necessary to slowly put the excess rhenium metal on hand into the international market to exchange it for real money and get it back, and to maximize the cash out without overwhelming the market.