Nowadays, whether it is the accessories of the timepiece, boilers, water pipes, faucets, copper profiles, and propellers, they are all made of brass or tin brass. Tin bronze with high lead content is not very popular here.

The copper coins of the Song Dynasty were copper-lead and tin alloys, with lead content and the lead content was not ordinary high, so they were not used simply by moltening. Of course, those who dared to commit crimes against the wind would not be so stupid that they sold the copper materials that were molten without processing. In order to conceal and increase added value, they would use some methods to separate and refine them. Well, the refined copper content is still very high, but it can finally be sold as copper materials. As for the tin in it, no one cares about it. Mao Geng couldn't think of how advanced separation technology there has been in these days. The most likely method is to heat and evaporate some of the lead components. In this era when there is no concept of lead poisoning, ignorant operators may inhale a large amount of lead steam, and thus they suffer from respiratory diseases such as asthma and may not be able to escape.

Given the gap in copper materials, this impure copper material must also be received. After receiving these copper materials, it must be further refined, and then add fire copper and zinc to dilute the lead content. As for the tin in the copper material, it is mostly beneficial and harmless. Therefore, most of the products produced by Mao are tin brass. Only sliding bearings require the reduction of lead, and the copper-lead-tin alloy collected is just used together.

But no matter what, the copper materials used in the Special Administrative Region are brass and tin brass. The most taboo thing is lead, and the one that has the effect of turning stone into gold is zinc.

Fortunately, when Mao Geng was in Xinhua, he not only got the antimony he had always dreamed of, but also got zinc on a sailboat. Therefore, Mao Geng actually did not only master the secret weapon of antimony.

Speaking of which, this is due to Mao Geng's spread of gold and silver mines in Xinhua. The rumors deliberately spread out triggered a wave of prospecting. The prospecting wave did not dig out gold and silver, but many other deposits were dug out, such as nearly twenty coal mines dug out. In addition to coal mines, of course, they also dug out the antimony and graphite mines that Mao Geng wanted. This is not counting, but also dug out the lead and zinc mines. Of course, no one in this era knew about zinc, so he naturally believed that all he dug was a lead mine.

But lead ore is also a mine! Digging this mine is better than digging nothing.

When I heard that the lead ore was dug, Mao Geng immediately thought that it should be a lead-zinc ore, because it is rarely heard that there are simple lead ore and zinc ore, which are generally lead-zinc symbiotic ore.

It just so happened that Mao Geng worked in zinc-based alloy molds in his previous life, zinc-based alloys, and zinc were the protagonists. Therefore, although Mao Geng’s understanding of zinc is not as professional as that of the smelter, he is still a quasi-professional person. In later generations, he can only be regarded as a bricklayer for "zinc smelting". However, when he came to the Song Dynasty, he was an expert among experts.

Speaking of which, although zinc ore has been wandering under the eyes of the ancients, zinc was smelted very late, much later than gold, silver, copper, iron, tin, lead and mercury. The reason is that the difficulty of zinc smelting was really a bit high for the ancients. If the trick to smelting zinc was not found, zinc could not be refined so easily.

Mao Geng certainly understood the characteristics of zinc smelting. The boiling point of zinc is too low. Its boiling point is only 906 degrees, less than a thousand degrees. However, the reduction temperature of zinc oxide is 904 degrees. Since the reduction temperature is very close to the boiling point, the gaseous zinc obtained after reduction. If there is no fast condensation recovery device, the gaseous zinc will either turn into flying smoke and escape invisible, or react with the carbon dioxide in the furnace gas and become zinc oxide again. So, if you don’t know the trick, zinc smelting will not be able to enter.

Well, this era may have been refined zinc metal by accident, but even if it is refined, I will not realize that the magic of the thing refined is. It seems that there is also a saying of white lead in legend, but Mao Geng has never seen it, and I don’t know if it refers to zinc. Anyway, even if there are alchemists and other great fortunes in this era, people don’t know the true face of Lushan, let alone how to use it.

In fact, the trick to smelting zinc is a layer of window paper, which can be easily understood at a glance. Mao Geng just gave a little guidance and asked Fujia, a local smelter, to try zinc. As a result, this trial made Fujia the biggest beneficiary.

The ore abandoned after the lead ore was removed by Fuguo Tie. Fuguo Yin followed Mao Geng's instructions and made a simple closed refractory tank, which separated a meniscus. This is the distillation smelting tank launched by the civil method. Ores and charcoal were added to the reaction zone of the tank, and then heated and refined outside the tank. As the temperature rose to the reduction temperature, zinc oxide and charcoal underwent a redox reaction, and zinc steam escaped. After the escaping zinc steam encountered a slightly lower meniscus surface in the upper right, it condensed into liquid zinc. Scoop out the liquid zinc and cooled it to obtain zinc metal. It was that simple.

After Mao Geng got the first piece of zinc metal, he was also a little excited, but it was just excitement. To be honest, he really didn't have the excitement of getting thick antimony for the first time. But it was obvious that this was also a thing worth celebrating. From then on, he had another good trump card in his hand, which he could play when it was time to play.

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

Mao Geng went to Lin'an, which did not affect Fu's family's zinc smelting. After understanding this trick, Fu Guoyin continued to explore, trying and improving, and gradually got on track from ore dressing to smelting. During the days when Mao Geng was waiting in Lin'an, Fu's new zinc smelting career made decisive progress. Soon, Fu's family bought the lead-zinc ore, and all the lead refined was purchased into the official, but the zinc refined had nothing to do with the government.

When Mao Geng arrived in Kaohsiung, the zinc produced by Fu family began to be transported to Kaohsiung. After Mao Geng had zinc, he began to smel the brass. Of course, this was Mao Geng's secret, and even Zhao Han didn't understand the mystery. In Zhao Han's eyes, Mao Geng had a very good set of alchemy, and it was not worth making a fuss about changing copper to a beautiful color on his hands. Zhao Han knew that antimony was magical Zhao Han had seen it, and there was antimony in the pencil core he used. Just call it this, antimony was worthy of praise. Speaking of which, antimony and zinc looked very similar, and it was not surprising that Zhao Han conflated the two.

Zhao Yan knew that Mao Geng didn't look down on the copper materials obtained from the Song Dynasty sold molten copper coins, but he attached great importance to the fire copper transported from Japan. Of course, there were also fire copper transported from the Song Dynasty. Although the Song Dynasty implemented a strict ban on copper materials, there were still Song merchants with great powers who could bring fire copper. Zhao Yan also knew that there was the participation of the navy and the smuggling of the Song Dynasty military was already an open secret and it was banned. Considering that Mao Geng's clever wife could cook without rice, Zhao Yan turned a blind eye.

Zhao Yan knew that all the copper materials had been melted when they arrived at Mao Geng. Zhao Yan was not interested in delving into the methods in it, but after Mao Geng's hand, the copper that was melted out had a golden luster.

Lu Jiuyuan was a little suspicious, but the copper I saw before was not as golden as it was. Today, when Mao Geng talked about brass, he was a little enlightened and had many questions, so he couldn't help asking:

"Master Mao, what's the mystery of this brass?"

"If you want to defeat the Jin Kingdom in the Copper Coin War and make a ruthless profit, you will fall on this brass."

Mao Geng avoided answering Lu Jiuyuan's question because he was extremely excited at this moment, imagining a magnificent financial war and economic war that would play in his own control. Mao Geng was calculating how to make one step a step like Soros in later generations, and finally collapsed the Jin Kingdom and the financial system, including Japan.

"How do you say this?"

Zhao Han suddenly became curious.

"I have already had a preliminary plan in my heart. In short, I am not afraid of the Jin Kingdom and can benefit the people of the Song Dynasty. Duke of Guo, Mr. Xiangshan, please follow me to see the smelting brass, and then talk about my plan."

The two of them looked at the smelting brass with Mao Geng, but they couldn't see anything, but finally they knew there was a new metal called zinc. When they looked closely, they were different from antimony. Zinc is blue-gray, while antimony was silver-white. Strangely, after zinc was mixed into copper and smelted, the copper refined became yellow and could greatly improve the performance of copper. After listening to Mao Geng's introduction, both of them nodded together, um, good!

"However, can Chief Executive Mao tell Lu, how did this zinc get it?"

"Actually, there are many lead-zinc ores in the Song Dynasty. I want to say that there is zinc where lead is present. However, this is a secret and the secret cannot be revealed. Moreover, how to smelify zinc is the secret in the secret. I think that within ten years, as long as the secret is not disclosed, the Jin people will not know it. Just call this, and we will have a way to make the Jin people defeated."

When Mao Geng talked about his proud work, he couldn't help but start to dance:

"Of course, this is a chain of plans. In short, the plan is a bit complicated. It also involves iron coins. Don't look at this inconspicuous zinc. If you use it on iron coins, it will turn decay into magic."

"Oh. Since this zinc is so magical, you have to refine it more. Since there is zinc where there is lead ore, there must be zinc in the lead mountain in Jiangxi!"

Zhao Yan thoughtfully, the alchemy technique of Mao Geng's sect is really unprecedented, and he is really unacceptable. No matter what series of plans or not, Mao Geng should not be fooled by Chen Liang's plot in "Romance of the Three Kingdoms"! Let's be more practical. Since zinc is so good, then you have to be refined very well. Zhao Yan summarized it and believed that the emperor's grandfather's philosophy of governing the country was highly pragmatic. Well, in other words, it is to seize the immediate interests first. Those who are foolish have a lot of use! Benefits are the hard truth!

"Yes, isn't Mr. Xiangshan from Jiangxi?"

Lu Jiuyuan is from Jiangxi, so Mao Geng certainly knows it, but he doesn’t know how far his home is from Qianshan.

"Not bad! Qianshan produces lead, Ehu is located in Qianshan. Lu had been to that time. Lu is from Jinxi and is not far from Qianshan."

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

"Jinxi, I wonder how far away it is from Guixi?"

Speaking of later generations, everyone basically had a bitter history of stock trading. Mao Geng's previous life also had a period of investment experience of stock trading becoming shareholders. Alas! Who has never been trapped in the world? Mao Geng was once trapped, and he was a small shareholder of Jiang Tong for N years. It seems that in 2007 and 2008, it was suddenly speculated that Jiang Tong wanted to acquire the largest silver lead and zinc mine in Guixi. Mao Geng, as a highly responsible small shareholder, immediately collected information about this Guixi silver lead and zinc mine. What a good guy! It turned out that this is the largest silver mine in the country, and the reserves of the lead and zinc mine are also very amazing.

When Lu Jiuyuan heard this, he laughed:

"Haha, Brother Mao, Guixi and Jinxi are already adjacent. The reason why Lu called Xiangshan was that he learned the name in Xiangshan, Guixi.

This is actually true!
Chapter completed!