After Yao Ran's family had dinner, they left on the sled back to the city, but they left Xiaoping and Yao Huo behind, and Xiaoping and Yao Huo ate with Yao Ran at dinner. Pen × fun × Pavilion www. ｂｉｑｕｇｅ。 ｉｎｆｏ

Yao Ran first arranged the corresponding work progress of the crane tonight for Yao Ran, and then focused on explaining to Xiaoping about the production of the blast furnace and why the blast furnace was made, and Yao Huo also pricked up his ears and began to listen carefully to Yao Ran's explanation.

"The so-called blast furnace, of course, is a very high furnace, the reason for the high is because the flame in the furnace should be raised, why let the flame rise, because the highest temperature of the fire is the outer flame of the flame, as for the overall structure of the blast furnace can be divided into three main parts:

The first part is the blast furnace itself. The refractory bricks we made here are for the inside of the blast furnace, because the refractory bricks can withstand higher temperatures and are not susceptible to overheating to melt or crack. The manifestation of the fryer occurs.

And the second part is the blower, and the construction of the preheating furnace, why build the preheating furnace, this is the ore we want to smelt, I want to smelt iron ore this time, but the smelting process of iron ore needs to reach a temperature of about 1000 degrees, and the combustion of ordinary flames requires oxygen.

However, the oxygen coming out of the normal wind will reduce the temperature in the furnace, because under normal circumstances, we eat barbecue or drink soup, if it is very hot, we blow it and it will cool down, because the wind can reduce the temperature of the surrounding air, but if we blow the heated air into the furnace, then the temperature will rise. So we use a blower to blow hot air into our blast furnace.

The blower is also very simple, it is to make an impeller from the materials we can find and let it spin at high speed. We can achieve our goal of transporting the wind out, but we want the wind to pass through without the temperature dropping much along the way, and there is also the power to blow the flame. We need a confined space, which requires this mold behind me, with which we can burn a set of pipes, and then close them and connect them to help us transport the hot air to the bottom of the charcoal fire in the furnace to achieve the purpose we want to heat the temperature in the furnace.

The third theme, in fact, is also the power that the blower needs to drive the high-speed rotation of the impeller, we need a power device that can continuously and stably provide power, and then let the impeller rotate at high speed, and then ensure that the hot air is continuously transmitted to the blast furnace, and this power device is also closely related to the river in front of you. ”

Yao Ran said a lot, and he didn't allow the two apprentices to interject, but in fact, he didn't want to teach the two of them these things immediately, because there is too much knowledge that needs to be introduced in detail, and if they really want to talk about it, they may not be able to learn the principle of one of them in a day and a night.

After all, the foundation is relatively weak, Yao Ran took a sip of fish soup to moisten his throat, and continued: "The iron ore is actually the piece of ore that cut Hua Tuo's buttocks that day, our stone was smashed and then heated with charcoal and then the molten iron can be obtained, and the molten iron can be poured into the ceramic model to get the pig iron products of the shape we want, such as iron axes." It's sharper than a stone axe. And it cannot be broken, and there are iron knives and iron spears. There are also iron pots, iron kettles, iron bowls, and so on. ”

Looking at the two students with bewildered faces, Yao Ran didn't have any idea of wanting to listen to an in-depth explanation, but continued to say to himself:

"So after the blast furnace and the waterwheel were built, we were going to go to mine it immediately, and the siderite was gone, and we needed a lot of ore, and then we made a batch of hammers to crush more ore, and then we poured a batch of iron axes with molten iron. Let all the people know the benefits of iron tools, and then finally go to popularize more iron products.

Of course, in addition to iron ore, we also need some other auxiliary materials for ironmaking, that is, we also need a lot of wood, and then burn charcoal, dry and smash the ore when smelting iron ore, and then smash the charcoal into pieces and pour it into the blast furnace. Only then can you practice iron. ”

The two apprentices stared at each other with blazing eyes, serious expressions, and a little panicked, which made Yao Ran feel funny, but he was afraid of scaring his two proud protégés, so he had to explain, "Don't frighten you, these things are mainly presided over by me, and you can help me out." But after listening to Yao Ran's explanation, the two apprentices were still silent. Yao Ran knew that the two of them were trying to understand the content of what they had just said, and they also wanted to ask questions, but the amount of information they gave just now was too large, and the two of them didn't know where to start, so they had their current expressions.

Yao Ran's guess was immediately confirmed, and Xiao Ping said,

"There was charcoal in the blast furnace from the beginning!" Yao Ran nodded.

"Then, as iron and charcoal are added, the blast furnace is constantly supplied with charcoal for flame as firewood for combustion."

Yao Ran smiled with relief and said, "That's right, and iron is also very hot in the process of melting, and he himself will have flames." Xiaoping began to continue to recall what Yao Ran had just said.

At this time, Yao Huo asked a question, "You didn't say the principle of the waterwheel?" How to make an impeller? What kind? ”

Yao Ran didn't speak, just drew a circle on the ground in the center, and then drew a circle of flakes on the edge of the center and inserted it into the center circle. Then three more drawings were drawn. Then he said: "These drawings are called three views, which can clearly draw the structure of a part, and I will teach you how to draw such drawings when there is paper in the future." ”

Yao Ran smiled and patted Yao Huo's shoulder, and said: "The waterwheel is what I left you to think about, I said a lot just now, you don't think about it all, I just told you the purpose and meaning of the recent work, and you are alive tonight, you can think about how to use the river water to provide us with continuous strength." Okay, you two can study together, find a wooden board and draw a diagram for me, it doesn't matter if you don't come up with a design drawing, you can tell me the principle you came up with. I'll go back first. Start your brainstorming, young people."

Yao Ran frowned at his apprentices, and then called his two sedan chair slaves to take them to the river, let them go to the river to wash, and dug up the mud for a day.

After washing it refreshed, the two barbarians stepped forward and lifted it, Yao Ran's sedan chair. began to walk towards Yao Village, followed by a group of beautiful wives of Yingying Yanyan.

This night was another painful night, none of the four women refused to leave Yao Ran, what a wonderful blessing it would be if it was not injured. However, everything is afraid of buts!

I woke up in the morning, and my eyes were red and swollen. The sedan chair man was arranged by Yao Ran to sleep in the small grass room outside the mansion, got up early, stood at the door and waited for Yao Ran, and today there are many more people at the door. are all waiting for Yao Ran. Because I haven't been sending bamboo sticks for a few days of work. And Wei Jin didn't know where to go, so the leaders of each team were waiting, Yao Ran's arrangement. Especially the people of Yao Shi under the city wall, and the people of Yao Huo, they ate too much meat skewers in the first two days. The bamboo skewers are all gone.

Although there is no expense now, and the family provides room and board, the neighbor's family does not have one, and the mother-in-law of the family is about to fry the pot. Once you ask about the bamboo sticks for work? Gone! Where did it go? Eaten! Is this the rhythm of death?

But everyone doesn't know where Wei Jin went, the child has a problem and looks for his parents, of course the child has a problem to find the patriarch, what does the patriarch say. The patriarch said that you can use bamboo sticks to exchange food and clothing, and even change wives and women. Of course, in Yao Ran's words, you can basically exchange for everything you want.

Now that there are no bamboo sticks, what do you use to exchange them? In fact, Yao Ran used the big white fish as a reserve at the beginning, but now because the big white fish that was recognized by everyone at the earliest time is no longer valuable, it can be said that the bamboo stick has become a credit currency within Yao Ran's family today. Of course, no one will recognize it when you go out of Yaozhai, you run to the Snow Mountain, take out a bamboo stick and say that you want to change ten animal skins, let alone change one, there must be no hair.

After Yao Ran understood everyone's situation, he whispered a few words to Xiaoyu, and after Xiaoyu listened, he turned around and returned to the room. After a while, Xiaoyu appeared in front of everyone with Wei Jin. Carrying a large basket on his back, a clear groove appeared on Wei Jin's shoulder pressed by the rope on the basket. Explain that the contents of the basket are heavy,

Yao Ran saw that the scarf was coming, and the tone in his mouth changed from polite to plain, a man's confidence depended on the money in his pocket, and now that Yao Ran has money to send to his clansmen, naturally he doesn't have to please everyone anymore.

"Well, Wei Jin is back. So it's how many people have done and how much work is reported. I still have a lot of work to do when I go to heaven, so don't leave after receiving the bamboo sticks, I need some people to help me. ”

Wei Jin slowly put the entire basket at Yao Ran's feet, glanced at nearly two thousand bamboo sticks, Yao Ran saw that there were enough people lined up, Yao Ran took out the animal skin that was originally used for bookkeeping, and distributed wages according to the captain's statistics, and finally everyone lined up to receive it.

Yao Ran found that the production of this bamboo skewer is difficult to meet the current big family, both in terms of output and actual transaction. Not even a single change capability. Now papermaking is an imminent thing. Yao Ran took out the account book of each family written a few months ago, and according to the family bookkeeping, he took back all the bamboo sticks in the hands of the captain present and recorded them in the account book. In this way, more than 200 bamboo sticks were recovered. Then it was sent out again, so that it was barely enough to pay the salary of the clansmen, and now the bamboo sticks are not depreciated but not enough in number.