Although Marin felt that he was settling the French by minting fake silver coins, he was not necessarily in the field. Why? Because the counterfeit silver coins minted by Marin have stable performance, the corrosion resistance of nickel white copper is stronger than that of genuine silver coins.

One of the important requirements of currency is that it is shelf-stable. The fake silver coin minted by Marin has the function of currency as long as others cannot see the fake. As long as it is durable enough, it can be circulated for a long time.

And for a large country like France, currency is often insufficient. Just like the Ming Empire, the productivity was too high, and as a result, the currency was not enough, and the value of silver was also very high.

So, to a certain extent, Marin may be able to help the French social economy. Because, with enough money, goods can circulate more smoothly. In the case of currency shortage, Marin's behavior is not at all clear whether he is pheating France or helping France.

Of course, this kind of behavior may help French society, but it will certainly not help the French royal family. Because, the French royal family relies on coinage to eat the dividends of seigniorage. As a result, Marin minted the coins on his behalf, which was tantamount to robbing the interests of the French court.

Therefore, to sum up, Marin helped the social and economic development of France, but it pitted the French court......

This is a very complex economic problem, and it is difficult to explain it in one sentence. And Marin didn't react at this time, he always felt that he had taken a big advantage. But later, when he reacted to himself, the first thing he did was to mint copper currency on a large scale in the North Sea Country to promote the development of his own economy, and also eat the benefits of seigniorage......

In fact, nickel coins have been popular throughout history. Even, the one-yuan coin of later Huaxia was nickel-plated with a steel core. The third set of one-dollar coins in the Great Wall series of soft sister coins is copper-nickel alloy. Therefore, Marin's behavior is actually to help the French mint a batch of modern coins in advance. Of course, he also ate the profits of the seigniorage, and it was a windfall profit. If the North Sea country circulated nickel-copper alloy coins, Marin would be able to eat the seigniorage just by eating the seigniorage, and it would also promote economic development......

It's just that Marin didn't understand this truth for a long time, and he happily used nickel metal to help other countries mint counterfeit silver coins. Although he also suffered huge profits from coinage, it also stimulated the economic development of the enemy...... People are short of currency, Marin's nickel and copper coins can be used as real coins, isn't this just to promote people's economic development? The only one who suffered was the hostile court that was robbed of the seigniorage......

……

Of course, this approach only works for Europe. If you want to do business with the Ming Dynasty in the future, you have to use real money. Why? Because the people of the Ming Dynasty had seen white copper, they also had their own way to distinguish white copper. The Europeans had never seen white copper, so they could fool them with nickel copper coins passing off as silver coins. But Huaxia has had white copper for a long time, and if you want to fool others, it is easy to be recognized.

It was precisely because of the Ming Dynasty's rich experience in distinguishing silver that the Spaniards had no choice but to mint an American silver dollar containing as much as 9 percent of silver to trade with the Ming Dynasty. Otherwise, the Ming Dynasty would have refused to accept it.

However, this also does not bother Marin. Why? Because Marin has long thought of the source of silver-Iwami Ginzan, Japan......

In these years, it seems that Iwami Silver Mountain has not been developed on a large scale, and everyone does not know that this is a super silver mountain. It seems that at present, the local daimyo has only mined small-scale silver mines on the surface, and they have been mined completely. It was not until 1526 that a huge vein of silver was discovered underground.

Marin can completely occupy the Iwami Silver Mountain and mine this super mine. Then, use Japanese silver to buy the goods of the Ming Dynasty and bring them to yourself......

As for Europe, let's use the copper coin to be more realistic, who told everyone not to know the white copper...... Who won't they be deceived by such a turtle?

Compared with later nickel-copper coins, the counterfeit silver coins forged by Marin only added some more lead to increase the density of the counterfeit silver coins. But this does not affect anything, because Marlin has increased the nickel content, which makes the currency very resistant to corrosion and very resistant to preservation.

Moreover, the lead is also produced by the company - the Bakkens lead-zinc mine not only produces zinc ingots, but also lead blocks...... Marlin implemented the use of blast furnaces at the Buckens-lead-zinc mine in Newfoundland, which greatly improved smelting efficiency and reduced production costs. Whether it is nickel or lead and zinc, the production cost is much lower in Europe. These low-cost nickel and lead can further reduce the cost of minting coins when used to mint coins.

……

In addition to bringing back 50 tonnes of nickel nuggets, Wilts also brought back 10 cylinders of concentrated sulphuric acid......

This is a by-product of the treatment of laterite nickel ore, when the nickel sulfide of laterite nickel ore is calcined at high temperature, the sulfur dioxide and sulfur trioxide produced are absorbed by the water tower to form a mixture of sulfuric acid and sulfurous acid. Of course, sulfurous acid is the main one, and sulfuric acid accounts for only a minority.

But Marlin remembers that sulfurous acid gradually oxidizes to sulfuric acid when placed in the air. This process is lengthy and inefficient. But Marin doesn't care either, because he isn't in great demand either.

According to Marin's instructions, Wiltz extracted a mixture of a large amount of sulphurous acid and a small amount of sulphuric acid, exposed it to the sun, stirred it with sticks, and from time to time injected air (in fact, oxygenation) into the sulphurous acid with a simple tool similar to a pump. In this way, it can be regarded as greatly accelerating the conversion of sulfurous acid into sulfuric acid.

Wiltz even had people use sealed easy heating and inject a large amount of air to test whether the conversion could be accelerated. Unfortunately, the experiment failed......

Why? Because sulfuric acid dissolves metals, metal containers cannot be used. However, if a metal container is not used, the high pressure resistance of the container will be greatly reduced. Wiltz's experiment was also carried out in ceramic vessels. As a result, because the pressure was too high after heating, the container exploded. The workers in charge of guarding the containers were disfigured by the sulfuric acid on the spot, which frightened Wiltz very much. Because, he was actually not far away at that time.

After that, Wiltz gave up the experiment of accelerating the conversion of sulfuric acid at high temperature and high pressure because it was too dangerous......

Therefore, this time he only sent back ten cylinders of concentrated sulfuric acid by-products.

"Concentrated sulfuric acid...... How do you use it? Marin fell into deep thought......

It just so happened that Marin had a report on the application for an increase in the production of the Laayoune phosphate mine in Western Sahara. This report is a request for an increase in black slavery, because mining has been manual in those days. If you want to increase production, you must increase the number of miners. And the black slaves were the cheapest miners......

Looking at the report, Marin was suddenly inspired:

"Yes, it can be used to produce superphosphate!"

Superphosphate is a water-soluble phosphate fertilizer, because it is soluble in water, it is fertilized with superphosphate, and the fertilizer effect is very fast. On the other hand, if apatite is used as a phosphate fertilizer, the absorption is very slow. Because, apatite is insoluble in water. In order for apatite to be used as fertilizer, it must be fertilized in advance as a base fertilizer. Otherwise, when the crop grows up, fertilization may not take effect quickly. Moreover, even so, the phosphorus content of apatite may not be completely absorbed by crops.

Superphosphate is also the earliest chemical fertilizer in human history, because its production is very simple - dissolving apatite with dilute sulfuric acid......

Yes, it's as simple as that. Dilute sulfuric acid decomposes apatite (Ca5(PO4)3F) into water-soluble calcium monophosphate monohydrate Ca(H2PO4)2•H2O, anhydrous calcium sulfate and a small amount of phosphoric acid, containing effective P4O10 14%~20%, of which 80%~95% is soluble in water, which is a water-soluble fast-acting phosphate fertilizer, which can be directly used as phosphate fertilizer and can also be used to make compound fertilizer.

The most important thing is that after the decomposition of dilute sulfuric acid, this fertilizer can be dissolved in water and can be quickly absorbed by crops, and the efficiency is 100 times that of apatite. It can be said that fertilization on the same day will be effective on the same day...... Unlike the original apatite, the natural transformation and absorption are very slow, and the absorption is not complete, and a lot of phosphorus is wasted......

……

"Hey, in this way, sulfuric acid is still quite useful!"

Thinking of this, Marin wrote a letter to the ship to the Americas to bring it to Wilts, instructing Wilts to pay attention to the production of sulfuric acid.

Moreover, Marin remembers that the decomposition of apatite does not necessarily require sulfuric acid. It seems that sulfurous acid can also be used...... In this way, with sulfuric acid and sulfurous acid, Marin can build the simplest superphosphate fertilizer plant......

In addition, it seems that dilute sulfuric acid and zinc metal can react to produce hydrogen...... Why don't you get a few hydrogen balloons for Caesar and Robert to play with? Marin couldn't help but think......