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Nowadays, whether it is the accessories of the timepiece, or the boiler, the water pipe, the faucet, the copper profile, and the propeller, it is all made of brass, or tin brass, and tin bronze, which has a high lead content, is not very popular here.

The copper coins of the Great Song Dynasty are copper-lead-tin alloys, which contain lead, and the lead content is not generally high, so it is not simply melted and can be used. Of course, those who dared to commit crimes against the wind in the Great Song Dynasty would not be so stupid as to sell the copper materials directly without treatment, and in order to cover up and increase added value, they would use some local methods to separate and refine. Well, the refined copper still has a high lead content, but it can finally be sold as copper, and as for the tin in it, no one cares about it. Mao Geng can't think of how advanced the separation technology is in these years, the most likely soil method, about is to heat and steam off part of the lead components, in this era of no concept of lead poisoning, ignorant operators are afraid that they will inhale a large amount of lead vapor, and thus suffer from respiratory diseases such as asthma, which is about impossible to escape.

In view of the shortage of copper, this impure copper material also has to be received, and these copper materials must be further refined, and then add fire copper and zinc to dilute the lead content, as for the tin in the copper material, most of them are beneficial and harmless, so most of the products produced by Mao are tin brass. Only sliding bearings need to use the wear-reducing properties of lead, and the copper-lead-tin alloy collected is just right.

But in any case, the copper materials used in large quantities in the Special Economic Zone are brass and tin brass, and the most taboo is lead, and the one that has the effect of turning stones into gold is zinc.

Fortunately, when Mao Geng was in Xinhua, he not only got the coveted antimony, but also got zinc by taking a tailwind, so Mao Geng's hands were not only in the hands of antimony, which was a secret weapon.

Speaking of which, this is due to Mao Geng's news of spreading gold and silver mines in Xinhua, and the rumors deliberately spread out led to a wave of prospecting, that wave of prospecting did not dig out gold and silver, but dug out a variety of other deposits is a lot, such as digging out of nearly 20 coal mines, in addition to coal mines, of course, also dug out of Mao Geng's antimony ore and graphite ore, this is not counted, but also dug out of lead and zinc ore, of course, no one knows zinc in this era, so it is taken for granted that what is dug is only a lead mine.

But lead ore is also a mine! It's better to dig up this mine than to dig nothing at all.

Hearing that the lead ore was dug up, Mao Geng immediately thought that this should be a lead-zinc mine, because it is rare to hear of simple lead ore and zinc ore, which are generally lead-zinc symbiotic ores.

It just so happened that Mao Geng had done zinc-based alloy molds in his previous life, zinc-based alloys, and zinc was the protagonist among them, so although Mao Geng's understanding of zinc was not as professional as that of the smelter, he could be regarded as a quasi-professional person.

It is said that although zinc ore has long been dangling under the noses of the ancients, zinc was smelted very late, much later than any gold, silver, copper, iron, tin, lead, mercury. The reason is because the difficulty of smelting zinc is really a bit high for the ancients, and if you don't find the trick of smelting zinc, zinc is really not so light and can be smelted.

Of course, Mao Geng understands the smelting characteristics of zinc, the boiling point of zinc is too low, its boiling point is only 9o6 degrees, not even a thousand degrees, but the reduction temperature of zinc oxide is 9o4 degrees, because the reduction temperature is very close to the boiling point, the reduction is obtained gaseous zinc. Without a fast-condensing recovery device, the gaseous zinc would either turn into smoke and disappear, or react with the carbon dioxide in the furnace gas and become zinc oxide again. Therefore, if you don't know the trick, zinc smelting will not be allowed to enter.

Well, in this era, zinc metal may have been smelted crookedly, but even if it is, it will not realize that there is any magic in refining this thing. It seems that there is also a saying about white lead in the legend, but Mao Geng has not seen it, and I don't know if it refers to zinc. Anyway, even if there are Fangshi and the like in this era, people don't know the true face of Lushan, let alone how to use it.

In fact, the trick of smelting zinc, that is, a layer of window paper, is a little transparent. Mao Geng just gave a little guidance and asked Fujia, a local smelter, to also try zinc smelting, and as a result, this trial made Fujia the biggest beneficiary.

The ore abandoned after the selection of the lead ore was taken away by Fuguo Railway, and Fuguo Yin made a simple airtight refractory tank according to Mao Geng's instructions, separated by a meniscus-shaped interval, which is the distillation smelting tank of the soil method. Ore and charcoal are added to the reaction area of the jar, and then heated outside the jar for fire refining, as the temperature rises to the reduction temperature, the zinc oxide and charcoal bioredox reaction, the zinc vapor escapes, and the escaping zinc vapor condenses into liquid zinc after encountering the meniscus with a slightly lower temperature in the upper right. Scoop out the liquid zinc, cool it to get zinc metal, it's as simple as that.

After Mao Geng got the first piece of zinc metal, he was also a little excited, but he was just excited, to be honest, he really didn't have the excitement of getting the crude antimony for the first time. But it's clear that this is also something to celebrate, and since then I have a good hole card in my hand, which can be played when it is time to play.

As you know, Mao Geng was later summoned to Lin'an by an edict.

Mao Geng went to Lin'an, which did not affect the smelting of zinc by the family. After understanding this trick, Fuguoyin continued to explore, while trying, while improving, from beneficiation to smelting are slowly on the track, Mao Geng waited in Lin'an for the period of time, Fujia's new zinc smelting business has made decisive progress. Soon, the Fujia pocketed the lead-zinc mine, and among them, all the lead smelted was purchased into the government, but the zinc smelted had nothing to do with the government.

When Mao Geng arrived in Kaohsiung, the zinc produced by the Fujia family began to be transported to Kaohsiung in a steady stream. After Mao Geng had zinc, he began to smelt brass, of course, this is Mao Geng's secret, and even Zhao Lu didn't understand the mystery. In Zhao Luan's eyes, Mao Geng is very good at alchemy, and it is not worth making a fuss about changing copper to a beautiful color on his hands. Zhao Lian knows antimony, the magic of antimony Zhao Lian has seen it, and there is antimony in the pencil lead used, so it is called this, antimony is commendable. It is said that antimony and zinc look very similar, and it is not surprising that Zhao Lian confuses the two.

Zhao Lian knew that Mao Geng did not look down on the copper obtained from the sale of copper coins in the Great Song Dynasty, but attached great importance to the fire copper shipped from Japan, of course, the Great Song Dynasty also shipped fire copper, although the Great Song Dynasty implemented a strict ban policy on copper, there were still powerful Song merchants who could import fire copper. Zhao Lian also knew that there was the participation of the navy, and the smuggling of the Great Song Dynasty military was already an open secret and was banned. Considering that it was difficult for Mao Geng's clever woman to cook without rice, Zhao Lian also turned a blind eye.

Zhao Lian knew that when the copper materials arrived at Mao Geng, they were all smelted again, and Zhao Lian did not have much interest in studying the methods, but after Mao Geng's hands, the copper that was smelted again had the luster of gold.

6 Jiuyuan was a little suspicious, the copper he had seen before was not so golden and bright, and when he heard Mao Geng talk about brass today, he had some sudden realization and a lot of questions, so he couldn't help but ask:

"May I ask Maud, what's the mystery of this brass?"

"If you want to defeat the Jin Kingdom in the copper money war, you have to make a lot of money, and it will fall on this brass."

Mao Geng avoided answering the question of 6 Jiuyuan, just because his heart was infinitely excited at this time, imagining that a magnificent financial war and economic war would be played in his own control, Mao Geng was calculating how to be like Soros in later generations, ring by ring, and finally let the financial system of Jinguo and Japan, including Japan, collapse.

"What do you mean by that?"

Zhao Luan suddenly became curious.

"I have a preliminary plan in my heart, in short, I am not afraid of the Jin country, and I can benefit the people of the Great Song Dynasty. Guogong, Mr. Xiangshan, you will come with me to see the smelting of brass, and then talk about my plan. ”

The two of them followed Mao Geng to see the smelted brass, in fact, they couldn't see anything, but they finally knew that there was a new metal, the name is zinc, and if you look closely, it is still different from antimony, zinc is blue-gray, and antimony is silvery-white. Amazingly, when zinc is mixed into copper for smelting, the smelted copper becomes yellow and clear, and the properties of copper can be greatly improved. After listening to Mao Geng's introduction, both of them nodded in unison, well, not bad!

"However, can Maute tell Sù6 how did this zinc come about?"

"In fact, there are a lot of lead and zinc mines in the Great Song Dynasty, and I won't tell you that wherever there is lead, there is zinc. However, this is a secret, and the heavens must not divulge it. Moreover, how to smelt zinc is a secret among secrets. I think that within ten years, as long as the secret is not revealed, it is impossible for the Jin people to know, just call this point, and we will have a way to make the Jin people deflated. ”

Mao Geng talked about his proud work, and couldn't help but start dancing with his eyebrows:

"Of course, it's a serial plan, and in short, the plan is a bit complicated. It also involves iron money, don't look at this inconspicuous zinc, if it is used on iron money, it has the power of turning decay into magic. ”

"Oh. Since this zinc is so magical, it must be refined. Since there is zinc where there is a lead mine, then the lead mountain in Jiangxi must also have zinc! ”

Zhao Luxin said that Mao Geng's alchemy is really unprecedented, and he is really unconvinced. No matter what serial plan is not, Mao Geng should not be fooled by the plot of Chen Liang's "Romance of the Three Kingdoms"! Let's be realistic, since zinc is so good, then it has to be refined. Zhao Lian summed it up and thought that the emperor's grandfather's concept of governing the country was highly pragmatic, well, in other words, it was to grasp the immediate interests first, and then say, those who were vain and brainy, had a fart! Affordability is the last word!

"That's right, isn't Mr. Xiangshan from Jiangxi!"

6 Jiuyuan is a native of Jiangxi, of course Mao Geng knows, I don't know how far his house is from Lead Mountain.

"Not bad! Lead Mountain is a lead production, and Goose Lake is in Lead Mountain, where 6 had been. 6 is a native of Jinxi, not far from the lead mountain. ”

6 As soon as Jiuyuan talked about Jinxi, Mao Geng immediately thought of Guixi, and asked casually:

"Jinxi, I don't know how far it is from Guixi?"

Speaking of the Chinese people of later generations, everyone basically has a bitter history of stock speculation, Mao Geng's previous life, and it is inevitable that there will be a period of investment experience of stock speculation as a shareholder, alas! Who in the world has not been trapped! Mao Geng was once trapped, and he was a minority shareholder of Jiangtong for n years. It seems to be O7 or O8 years, and suddenly it was speculated that Jiangtong was going to acquire the largest silver-lead-zinc mine in Guixi, Mao Geng, as a highly responsible small shareholder, immediately collected the information of this Guixi silver-lead-zinc mine, good guy! It turns out that this is the largest silver mine in the country, and the reserves of lead and zinc ore are also very amazing.

6 When Jiuyuan heard this, he laughed and said:

"Haha, Brother Mao, Guixi and Jinxi are already adjacent. 6 The reason why a certain person is called Xiangshan is that he gave lectures in Xiangshan in Guixi, which is why he got this name. ”

There is such a thing!

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