The matter was discussed almost the same. Liu Feng needed to think about some details before making a decision. At present, there was some time, Liu Feng planned to visit Kurut's Arms Factory and Lin Zhi's Shipyard.

Liu Feng and his party were preparing to arrive at the weapons factory first. This place was a little far from the palace. Liu Feng and his men rode on horseback. From a distance, they could hear the sound of ding irons and the blue smoke rising from the air. It seemed that the weapons factory was quite busy.

As I got in, I saw the fat Kurut, who was licking his stomach, wandering around in front of many workstations, occasionally pointing at him. When I came last time, this guy was busy. It seemed that the workers who were calling him were already skilled, and only Kurut needed to raise some points.

Seeing Liu Feng coming, he hurriedly took a few steps and said hello. Kurut was both grateful and admired Liu Feng, and always felt that there were countless thoughts and ideas in this person's head.

"Marson Liu, you are here. What new things are there to do this time?" Kurut looked at Liu Feng with anticipation.

"Oh, you can't do what I want to do for the time being." Liu Feng looked regretful and sighed.

"Marson Liu, don't joke. I am the best blacksmith in this city. Even in the entire Rongri Kingdom, I will definitely be able to make a name for myself. Let's talk about it, see if I can do it."

"Can 2,000 long weapons be made of wuz steel, 50,000 ring-headed swords, fine steel be made, can it be done?"

Kurut's eyes were wide open, his mouth was half open, and then he looked around and said, "Marson, you are teasing me, let alone ore, not to mention the number of people and tools, even if they are enough, we have to rely on the weather for our salary, and the monsoon cannot control it. I am afraid that there will be no more weapons in ten years."

"You're right," Liu Feng nodded, "What if I can solve your temperature problem?"

"Then it's okay. As long as you have money, buy enough ore and add some people to me. What you said will be almost half a year."

"What you want is your words. Uzi Steel is rare for the time being. I will arrange for someone to buy it, but it is not that fast. However, I will teach you the fuel issue."

Liu Feng knew very well about Uzi Steel. This type of iron ore was refined. This type of iron ore had dried up in Liu Feng's age, but now there are a lot of them. Unfortunately, it is not in northern Tianzhu, but on the Decan Plateau in southern Tianzhu.

After you have money, you will arrange a caravan to penetrate south, transport the iron ore back, or simply build an iron plant there and refine it into steel ingots and transport it back. This is the later plan. At present, you can only try your best to buy it in the world. There is no breakthrough in high temperature technology, and it depends on the help of charcoal and monsoon, the output is limited and the price is expensive.

It is better to solve the sergeant's ring-headed sword first. Liu Feng said to Kurut, "There is a kind of black, slightly odorous thing buried underground, called coal, which can burn, and the flame temperature is very high."

"Oh? How do you find it?"

"Anyone who has veins with charcoal sees the mountain and stones. If it counts the stones, it will go. If it is bluestone, sand and stones, it will not." After Liu Feng said that, Kurut scratched his head, his big eyes turned white and his face was confused.

"If you don't understand, take a small notebook and write it down," Liu Feng explained carefully:

"If you want to find coal, you have to learn to observe the rocks on the mountain. If there is shale, it means that there may be coal below. You can dig it down to explore. If the mountain is full of limestone and sand, don't look for it, absolutely nothing.

There are two other points to pay attention to. When mining, one should pay attention to the water below and avoid the water layer. In addition, it is necessary to open the well to breathe, and there is toxic gas in the coal seam. It is best to drill a coal well and a gas well to communicate with each other to ensure safety. If you are not at ease, you can throw a live chicken to experiment."

Kurut wrote down closely, and everyone was full of worship.

Guo Jia asked, "Madman, we have already had the coal you mentioned in the Central Plains, but we have never used it to smelify iron. The Prime Minister also did a test on that day. He used coal to smelify iron, and the temperature was enough. But the iron produced was fragile, so he abandoned it. Do you have anything that has not yet been transparent?"

Guo Jia's striking words actually understand the meaning. In short, it is "Are you fooling this fat man?"

Liu Feng could understand it, and naturally knew the truth. He thought to himself, although I was not an honest person, I never fooled good people. He quickly explained:

"This coal is just the first step. Coal cannot be used to smelify iron. It is precisely because of the odor inside that affects the hardness of the iron." Liu Feng certainly cannot teach chemistry, and no one can understand it after he talks.

Liu Feng was originally a sports student, and his grades were indeed average, but iron smelting and steelmaking were basic chemical knowledge. Coal contains a lot of sulfur, so it has a odor. When making steel, coal is at most used as auxiliary fuel, otherwise the sulfur will be mixed in and the quality of the product is extremely poor.

The solution is very simple. During the Spring and Autumn Period and the Warring States Period, the Central Plains had already mastered the methods, but they had not been promoted. Liu Feng then continued to popularize the science and said to Guo Jia:

"Fengxiao, you are right, but coal is just the first step. You must roast coal into carbon so that you can use it to smelify iron." After saying that, he called Kurut, who was confused, and ordered:

"Fatty, please take a small notebook and remember it carefully. Dig as much coal as possible. Pay attention to the two I said. Never accident. Does this roasted coal turn into carbon? Build some such stoves."

Liu Feng took the fat man's pen, outlined it on the paper, and returned the pen to the fat man, and continued to explain, "Put the exhaust hole, fill it with crushed coal, and roast it with firewood or coal fire below until there is no white gas discharged from the air hole. Then, pour some cold water and accelerate the cooling, and the pieces inside will be coke."

"After baking like this, will the odor disappear?" Guo Jia was so excited.

Liu Feng nodded and replied, "That's exactly what it is."

"Brother Madman, where did you know these weird things? They all have one set after another, which sounds quite interesting!" Aishi was very curious. Her question actually ignited everyone's curiosity. Liu Feng had no choice but to rely on the ruins mentioned in the book to explain it.

"I have been refining coke in this way for many years in my hometown village. It's just that it's too remote and has not been used to smelify iron and make weapons, so everyone doesn't know about it."

This is actually half true and half false. The history of making coke in the Central Plains is indeed very long, but it has been hundreds of years since it was used to make steel. I have to say that it is a pity.

"Marson Liu really never disappoints people." Kurut's face was red and extremely excited. "As long as the fuel problem is solved, the ring-headed knife you mentioned will be fine. By the way, Marshal, what does the ring-headed knife look like? But there is a ring-headed knife?"
Chapter completed!