Chapter 844： The role of sulfuric acid

Although Marin felt that he had made a fake silver coin to pit the Frenchman, it was not necessarily true. Why? Because the fake silver coin cast by Marin has stable performance, and the corrosion resistance of nickel-nickel copper is stronger than that of genuine silver coins.

One of the important requirements of currency is the preservation. As long as the fake silver coins that Marin has minted, as long as others cannot see the fake coins, it will have the function of money. As long as it is durable enough, it can be circulated for a long time.

For a big country like France, currency is often not enough. Just like the Daming Empire, the productivity is too high, which results in insufficient currency and the silver value is very high.

Therefore, to a certain extent, Marin may be regarded as helping the French social economy. Because, with enough money, materials can circulate more smoothly. In the context of currency shortages, Marin's behavior is simply not to pit France or help France.

Of course, this behavior may have helped French society, but it certainly will not help the French royal family. Because the royal family of France relies on the mint to eat the bonus of the mint tax. As a result, Marin coined the coin, which was tantamount to stealing the interests of the French court.

Therefore, the conclusion is that-Marin helped the development of French society and economy, but pitted the French court ...

This is a very complicated economic issue, and it is difficult to make it clear in one sentence. And Marin didn't react at this moment, always felt that he was taking advantage of it. But later, when he responded by himself, the first thing was to cast copper-copper currency on a large scale in the North Sea country to promote the development of the national economy and also swiftly take advantage of the mint tax ...

In fact, nickel coins are very popular in later generations. Even, the one-dollar coins of later generations of China are nickel-plated steel core. The third set of yuan coins from the Great Wall series of soft sister coins is copper-nickel alloy. Therefore, Marin's behavior was actually to help the French to mint a batch of modern coins in advance. Of course, I also got the profit of the mint tax, and it was a huge profit. If the nickel-copper alloy coins are circulated in the North Sea country, Ma Linguang can eat the mint tax, and he will be able to eat and die, and also promote economic development ...

It's just that Marin didn't understand this for a long time, and he also used nickel metal to help other countries to cast fake silver coins. Although he has also eaten huge profits, but it has also stimulated the economic development of the enemy countries ... People are lacking currency. Marlin's nickel-copper coins can be used as real coins. Is this not just promoting their economic development? The only loser is the hostile court robbed of the mint tax ...

...

Of course, this approach is only valid for Europe. If you want to do business with the Ming Dynasty in the future, you have to use real money. Why? Because people in the Ming Dynasty had seen copper-nickel bronze, they also had their own way of identifying copper-nickel bronze. Europeans have never seen white copper, and they can naturally use nickel-copper coins to spoof them as silver coins. But Huaxia had copper bronze very early, and if you want to fool others, it is easy to see through.

It was precisely because of the Ming Dynasty's rich experience in discerning silver that the Spaniards had no choice but to cast American silver dollars containing up to 90% of silver to trade with Daming. Otherwise, the Ming Dynasty people will refuse.

However, this is not difficult for Marin. Why? Because Marin has long been thinking about the source of silver-Ishigami, Japan ...

This year, Shi Jianyinshan seems to have not yet 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 Daming has only mined small-scale silver mines on the surface, and the mining is finished. It wasn't until 1526 that huge silver veins were discovered underground.

Marin can completely occupy Shijian Yinshan and mine this super large mine. Then, using Japanese silver, I bought Daming's goods and brought myself dashing ...

As far as Europe is concerned, let's use the silver coins to be more realistic. Who told everyone not to know the silver coins ... so who should they be?

Compared with nickel-copper coins of later generations, the fake silver coins forged by Marin only added more lead to increase the density of the fake silver coins. But this does not affect anything, because Marin increases the nickel content, making the currency highly resistant to corrosion and very resistant to preservation.

Moreover, the lead is also produced by itself-the Bakens lead-zinc mine not only produces zinc ingots, but also lead blocks ... Marin promotes the use of a blast furnace at the Bakens lead-zinc mine in Newfoundland, greatly improving the smelting efficiency Reduced production costs. Whether it is nickel or lead-zinc, production costs are much lower in Europe. If these low-cost nickel and lead are used for coining, the cost of coining can be further reduced.

...

In addition to transporting 50 tons of nickel block metal back, Wiltz also transported ten large tanks of concentrated sulfuric acid ...

This is a by-product of the treatment of laterite nickel ore. When calcined laterite nickel ore nickel sulfide, the generated sulfur dioxide and sulfur trioxide are absorbed by the water tower to produce a mixture of sulfuric acid and sulfurous acid. Of course, sulfurous acid is the main component, and sulfuric acid is only a minority.

But Marin remembers that sulfurous acid will gradually oxidize to sulfuric acid when placed in the air. This process is relatively long and the efficiency is very low. But Marin did not care, because his demand was not large.

According to Marin's instructions, after extracting a mixture of a large amount of sulfurous acid and a small amount of sulfuric acid, Wiltz placed it in the sun to expose it, and people could not help stirring with sticks, and occasionally used a pump-like Simple tool to inject air into sulfite (actually adding oxygen). In this way, it can greatly speed up the conversion of sulfurous acid into sulfuric acid.

Even, Wiltz also made it easy to heat with a seal, and injected a lot of air to test whether the conversion speed can be accelerated. Unfortunately, the test failed ...

Why? Because sulfuric acid can dissolve metals, metal containers cannot be used. But without metal containers, the high-pressure resistance of the container will be greatly reduced. Wiltz's experiment also used ceramic containers. As a result, the container exploded because the pressure was too high after heating. The workers in charge of the containers were disfigured by sulfuric acid on the spot, which scared Wiltz. Because, he was actually not far away.

Later, Wiltz gave up the test of high temperature and high pressure to accelerate the conversion of sulfurous acid because it was too dangerous ...

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

"Concentrated sulfuric acid ... how to use this thing?" Marin was in deep thought ...

As it happens, Marin has a report on his application for increasing production of the Aoun phosphate mine in Western Sahara. This report requested the addition of black slaves, because mining has been relying on manual labor. To increase production, miners must be added. The slaves are the cheapest miners ...

After looking at the report, Marin was suddenly inspired:

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

Calcium superphosphate is a water-soluble phosphate fertilizer. Because it is soluble in water, fertilization with superphosphate is very effective. Conversely, if apatite is used as phosphate fertilizer, absorption is very slow. Because, apatite is insoluble in water. To use apatite as fertilizer, it must be fertilized in advance as a base fertilizer. Otherwise, in the growing season of the crop, fertilization may not take effect quickly. Moreover, even so, the phosphorus component of apatite may not be completely absorbed by the crops.

Calcium superphosphate is also the earliest chemical fertilizer used in human history, because its production is very simple-it is enough to dissolve apatite with dilute sulfuric acid ...

Yes, it's that simple. Dilute sulfuric acid decomposes apatite (Ca5 (PO4) 3F) into water-soluble calcium dihydrogen phosphate monohydrate Ca (H2PO4) 2? H2O, anhydrous calcium sulfate and a small amount of phosphoric acid ~ www.novelhall.com ~ contains effective P4O1014% ～ 20%, 80% ～ 95% of which are soluble in water. It is a water-soluble quick-acting phosphate fertilizer. It can be used directly 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 the crop field. The efficiency is one hundred times that of apatite. It can be said that the same day fertilization, the same effect ... Unlike the original apatite, natural conversion and absorption is very slow, and the absorption is not complete, and many phosphorus components are wasted ...

...

"Huh, in this way, sulfuric acid is still very useful!"

Thinking of this, Marin wrote a letter asking the ship to the Americas to Wiltz, instructing Wiltz to pay attention to the production of sulfuric acid.

Moreover, Marin remembers that sulfuric acid may not be necessary to decompose apatite. It seems that sulfurous acid can also be used ... In this way, through sulfuric acid and sulfurous acid, Marin can build the simplest superphosphate fertilizer factory ...

In addition, it seems that the reaction of dilute sulfuric acid and zinc metal can produce hydrogen ... Or, how many hydrogen balloons are there for Caesar and Robert to play? Malin couldn't help thinking ...