"Ms. sir, I'm back!"
Lantian County, Yunshan Villa.
Han Yuxi pushed the door open from the outside and saw Li Zexuan who had just finished sword practice in the front yard, and said with a smile.
"Why did you come back so quickly today?"
Li Zexuan took the handkerchief from Xiao He, wiped the sweat from his forehead, and asked curiously.
Since Ye Fashan is in Guancheng, Han Yuxi has been going to the nearby courtyard early every morning during the recent period to chat with Mrs. Ye, mainly because she is afraid that the old man will be too worried and may develop heart disease over time!
"Haha! My husband, aren't you asking questions knowingly? Yesterday you told my grandmother that Guancheng County has been defeated, and Fashan and the others have been relieved. My grandmother's mood has improved instantly. Why do you need me to comfort you? I When I went there just now, my grandmother and my grandfather had already gone out, and the maid who was serving them said that they had gone to the academy early in the morning!"
Han Yuxi smiled and said.
It is said that after Ye Fashan escaped from Guancheng County this time, he did not return to Beijing with the army. After saying goodbye to Xiao Yuer, Tiedan, Meng Wenhao, Liu Rengui and others, he left for Nanyang. He planned to go home and say goodbye to his parents. , then went to the south to visit famous mountains and rivers, visit hermit masters, and pursue his own path!
As for credit or whatever, he doesn't care at all!
Li Zexuan smiled and said: "My grandfather and grandmother have also reached their old age. Something like this happened a while ago, which really worried them a lot. After all, I didn't expect Fashan to accompany me." Let’s go to Guancheng with Xiao Yu’er, this kid is kind-hearted, the Ye family really has a successor, in fact, grandpa and the others should be happy for Fa Shan!”
Han Yuxi asked curiously: "My husband attaches great importance to the Dharma and goodness?"
Li Zexuan now has hundreds of disciples, and she has never seen Li Zexuan value someone so highly.
Li Zexuan thought to himself, of course he valued the future Taoist leader of the world, but it was impossible for him to say such things. After thinking about it, he said: "Dharma has good qualifications and a high level of understanding. He is different from other children from rich families. , he is very able to endure hardships, and for such a person, it will be difficult for him to succeed in the future, so my husband said that the Ye family has a successor!"
Han Yuxi smiled and nodded, then rolled her eyes and said, "Mr. Sir, Tiedan has helped a lot this time with the army. Do you think the Holy Emperor will reward him?"
After all, this is her biological sister. After Tiedan went to Guancheng, Han Yuxi was worried every day. Now that Tiedan is about to return triumphantly, Han Yuxi, as a sister, starts to worry about whether his brother can get the reward he deserves. !
Li Zexuan patted his wife on the shoulder and replied: "Madam, don't worry! Your Majesty has always made clear rewards and punishments. Tiedan's contribution is obvious to all, and Your Majesty will never turn a blind eye. In fact, I don't want to see His Majesty give Tiedan too much. He is still young now, and if the reward is too heavy, I’m afraid he will lose the motivation to make progress!”
Han Yuxi said thoughtfully: "Yes! My husband is right! But Tiedan's contribution this time is not that big. I think he should only get some rewards!"
"Master, Master~!"
At this moment, Song Xiaosi's shouts came from outside the courtyard gate.
Li Zexuan turned around and said, "What's the matter? Come in and talk~!"
When Han Yuxi saw that Li Zexuan had business, she went into the house first.
Song Xiaosi entered the courtyard, walked to Li Zexuan, and bowed: "Young Master, the diversion canal next to the Bahe River has drained all the water in the Meicun River section. The foundation of the dam has begun today. Do you want to go and take a look? ~!"
When Li Zexuan heard this, he was shocked and said with joy on his face: "Okay! You go first! I'll change my clothes and I'll be there soon."
The reason why Li Zexuan did not personally participate in the Guancheng Battle was mainly because he was concentrating on the Bahe Dam. In the past half month, with the joint efforts of him, Mo Huai and Yan Shaoning, many achievements had been conquered. Among the engineering problems during the dam construction process, the most important thing is that Li Zexuan solved the most critical issue in the reinforced concrete pouring dam plan-steelmaking!
Next to the ironmaking plant of the workshop, a small steelmaking plant appeared.
Ancient people did know how to make steel, and artificially tempered steel appeared in China at the end of the Spring and Autumn Period (before 476 BC). By the Eastern Han Dynasty, steelmaking technology had been mastered. The most commonly used techniques are steel frying and steelmaking.
The so-called fried steel is to heat the pig iron until it melts or basically melts, stirs it in the furnace, and uses the oxygen in the air to carbonize the pig iron to obtain steel. The quality of the steel produced by this method is not high.
As for steelmaking, a block of steel is repeatedly heated, folded and forged in order to make the structure of the steel denser, the composition of the steel body more uniform, and to reduce impurities, thus improving the quality of the steel. Therefore, the quality of swords made from steelmaking is very high. high.
Although the steel produced by Baidu Steelmaking is of high quality, this method has low output and high cost, making it difficult to meet the needs of industrial development.
The method Li Zexuan adopted was the converter steelmaking method. This method was invented by British H. Bessemer in 1856. The oxidant used in the process was oxygen. Blow air into the molten pig iron to oxidize impurities such as silicon and manganese. A large amount of heat is released during the oxidation process (containing 1% silicon can increase the temperature of pig iron by 200 degrees Celsius), which can reach a sufficiently high temperature in the furnace.
Converter steelmaking is carried out in a converter. The shape of the converter is like a pear, with refractory bricks on the inner wall and many small holes (tuyeres) on the side of the furnace. Compressed air is blown into the furnace through these small holes, which is also called a side-blown converter. At the beginning, the converter is horizontal, liquid pig iron at 1300 degrees Celsius is injected into it, and a certain amount of quicklime is added, and then air is blown in and the converter is turned to make it stand upright.
At this time, the surface of the liquid pig iron reacts violently, oxidizing iron, silicon, and manganese (FeO, SiO2, MnO) to generate slag. The convection effect of the molten steel and slag is used to spread the reaction throughout the furnace. After a while, when only a small amount of silicon and manganese remain in the molten steel, the carbon begins to oxidize, generating carbon monoxide (exothermic) and causing the molten steel to boil violently.
A huge flame appeared at the furnace mouth due to the burning of overflowing carbon monoxide. Finally, phosphorus is also oxidized and further forms ferrous phosphate. Ferrous phosphate reacts with quicklime to form stable calcium phosphate and calcium sulfide, which together become slag.
When the phosphorus and sulfur gradually decrease, the flame recedes, and brown steam of ferric oxide appears at the furnace mouth, it indicates that the steel has been smelted.
The steel produced by this method is superior to the steel frying method and the steel-making method in terms of output and quality!
When he first saw a large amount of high-quality steel being smelted from the converter mouth, Mo Huai said it was incredible. You must know that the Mo family is not only good at engineering construction, but also good at steelmaking and sword casting. However, it turned out that Li Zexuan was not a member of the Mohist family. , has such incredible steel-making skills, Mo Huai couldn't help but be even more convinced of Li Zexuan!
After solving the steel-making process, Li Zexuan experimented with mixing steel bars with cement, which was as strong as a boulder.
It is precisely because these basic problems were solved that today's dam foundations can be built.
After changing out of his training clothes, Li Zexuan wore a white Confucian shirt and came to the bank of the Bahe River. From a distance, he could see the dark workers on both sides of the river bank.
In order to keep up with the progress of the project, Li Zexuan used the same tactics as the last time he built Yanhuang Academy, recruiting more than 10,000 craftsmen and civilians. It is said that basically all the young people in Lantian County were recruited.
This is a typical case of not having enough time and having to make up the numbers. Anyway, he has money!
"Chief, you are here~!"
Mo Huai's eyes were sharp. When he noticed Li Zexuan coming, he hurriedly came up to greet him and said.
"Well! Mr. Mo, I heard that the foundation of the dam will be built today, so I came over to take a look!"
Li Zexuan smiled and looked at Bahe in front of him.
Due to the diversion canal next to it, the river water in this section of the river has been drained, exposing the yellow river bed. The soft sand on the surface of the river bed has been dug away by craftsmen and farmers. The foundation will be built from the dug out place later. Li Zexuan Seeing this scene, he felt proud and said with emotion:
"After several months, we have finally passed the most difficult moment. Who could have imagined that we could cut off the raging Bahe River in such a short period of time? Now we have not only cut off the water, but also cut it off. Build a dam several feet wide, and the natural chasm will become a thoroughfare~!"
Hearing this, Mo Huai laughed and said: "In the final analysis, the mountain chief's plan is appropriate. Moreover, the mountain chief has invested so much manpower, material resources, and financial resources. If the results cannot be achieved as soon as possible, I will be incompetent~!"
Li Zexuan said hurriedly: "Why did Mr. Mo say this? You are the one who has worked the hardest during this period! When the dam is completed, you will be the hero of the entire Lantian County, and all the people who have benefited from the dam will be grateful to you~!" "
"Hey, Chief, if you say so, then I won't have to work hard~?"
While the two were talking, Yan Shaoning walked over from the side and said half-jokingly.
He and Li Zexuan are very good friends, but since he is also on duty at Yanhuang Academy, when people from the academy are present, he usually calls him "Captain Li Zexuan" instead of calling him by his first name. This call is for his friends. face!
Li Zexuan turned to look at Yan Shaoning and said, "Haha! It's all hard work! It's all hard work! Oh, by the way, Shaoning, why don't you see Miss Mo?"
Yan Shaoning's eyebrows twitched and he almost vomited blood. A hint of honeyed embarrassment suddenly appeared on his face. He thought to himself that he was such a bad friend and he really couldn't pick up the pot. Ren Mo Huai was still here. Is it appropriate to mention his daughter now?
"Ahem! Why is she here? She should be in the workshop right now!"
After being mentioned like this by Li Zexuan, Yan Shaoning no longer dared to face Mo Huai as usual, as if he was as nervous and awkward as a son-in-law meeting his father-in-law!
"Master, Mr. Mo, the materials have been prepared. Do you want to start building the foundation of the dam?"
At this moment, Uncle Fu came over to relieve Yan Shaoning's embarrassment and just listened to what he said.
"Well! Let's begin~!"
Li Zexuan smiled and nodded.
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