Song Jiu has not yet gone, and the twenty officials who have studied have gone first, at least they have studied and studied it. Song Jiu also reminded them that they are half an expert.

Song Jiu took his students to study another thing and first invited three craftsmen who burned glass in the Song Dynasty at a high price. There were quite a few workshops in the Song Dynasty, but they took the wrong path from the beginning, so what they burned was real glass, not glass. Some workshops had good benefits, while others had poor benefits.

However, relatively speaking, they all have some practical foundations, but they have deviated from the research and development direction. Song Jiu and three old craftsmen invited him, paid high salaries, and signed confidential measures for high compensation, but the rewards were also amazing. Then another yard was built behind the house, and an earthen kiln was built in the yard.

Song Jiu did not submit it, and no one asked him to submit it. Most of them even doubted whether he could burn large pieces of glass. Song Jiu's knowledge came from that Western teacher, so it was not surprising that he could burn glass, but for many years, he had never seen large pieces of glass sold to the Central Plains.

That would be related to whether the beautiful house he painted could be built. It is a luxury and has little to do with military and civilian use. Some people may covet it after success, but they are not willing to say it out loud. Moreover, whether it can be successful is still two different things.

Zhao Kuangyi transferred a horse and asked Song Jiu to learn to ride.

It is a good thing to know how to ride a horse. The speed of this era is too tragic. Only riding a horse is the fastest speed. Song Jiu took time to practice and fell to his nose and face. He finally could barely trot on a horse, but he could not gallop. But Song Jiu didn't know that there was a reason why Zhao Kuangyi asked him to ride a horse. Zhao Kuangyin and Zhao Pu said something, "Southern..."

A few days later, Song Jiu followed the official road to the saline-alkali land. It was not too far from Dongshuimen, and it was at the junction of Kaifeng County and Chenliu County.

There are many soil layers in the entire Kaifeng area, and the soil quality is poor. Most of them belong to the fine sand washed by the Yellow River, and saline-alkali land is everywhere. But the people also have their methods. The court has their methods. Planting crops is not suitable, and it can be suitable for planting fruit trees, mulberry forests, and the weather is cool, and it is suitable for cultivating animal husbandry. The court can use it as an excellent pastoral supervisor. In fact, there is another method, which is to continue to erode the Yellow River water. After the water recedes, a large amount of silt will be left behind, and the barren land will become fertile soil.

Song Jiu knew that, but now the Song Dynasty is not short of land, but people. The Hebei delegation shocked him. Xiangzhou Cizhou is not too far from the capital, and it is so empty. He doesn't want to be too troublesome, and he won't even mention it.

When riding a horse, Zhao Kuangyi gave a good horse. He was a top-quality pheasant mare. He has been growing for seven or eight years. He is more humane and gentle. Otherwise, he would fall even worse when practicing riding in the past few days. If he rode it on the battlefield to kill the enemy, he might not be able to keep up with the speed of the horse. It is the best to use it as an ordinary mount.

Come to the construction site.

Many people, more than a thousand people, were full of officers, soldiers and craftsmen. There were several kilns in the distance, which were used to burn bricks. China had a history of burning bricks for a long time. However, the cost was relatively high. In the Song Dynasty, some earthen kilns used to burn bricks with coal appeared, and the design was unreasonable. This phenomenon continued until the Southern Song Dynasty, and bricks and tiles were still very expensive.

Song Jiuwei said hello and made improvements. He first called many brick kiln craftsmen, and then compared them with the brick kiln form in later memory based on the current cave form sent by the imperial court. Eight earth kilns were designed.

If you want to burn good bricks, one is the structure of the kiln, the second is the temperature, and the third is the soil quality.

First, we can see which cave design is the best. This is easy to compare. If you burn bricks with the same soil quality, you can find out after burning a furnace of bricks. Then test the temperature and soil quality. When Song Jiu arrived, the answer was already out. Only two cave designs were the most reasonable.

In fact, this has made the court moved.

Wooden houses are warm in winter and cool in summer, but they are prone to insect erosion and weathering, and must be repaired frequently and catch fire. For example, better houses are mostly mixed with bricks and tiles. This is the case with imperial palaces and palaces, and the Song family houses. As for ordinary people, they are mud walls and thatched roofs, at most they are tiles, and the walls are mud walls. As a famous minister of the Tang Dynasty, Song Jing, as a local official, saw that the city was converted into bricks and tiles because wooden houses were flammable, and the amount of money spent behind them was not recorded in history. The cost of bricks and tiles was too expensive, and many bricks and tiles were not of the quality.

The technology was released, and more than 200 laborers and nearly 100 craftsmen were used. The officials of the Third Division also remembered a new term and experiment while cherishing money. But it does not mean the end. Bricks used for blast furnaces are different from bricks used to build houses. Refractory bricks, clay bricks, high alumina bricks, and corundum bricks. The two behind are not thought about. They think about the first type, and they have to burn clay bricks with high viscous clay. Not only blast furnaces, but also refractory bricks are needed.

This is not much money, so the next thing is to spend money.

There are many people in several warehouses that are being led by officials to make cement. Song Jiu demanded that the cement quality may not be bad, but it will lead to heavier waste and higher costs. Once it is built, it will be put into the warehouse. It is not a place to spend money, but the most expensive place is blast furnace.

The blast furnace is not good enough with cement. It is not the kind of high-grade cement. If you want to be strong, you must use a large amount of reinforced concrete structure. Now that the wire drawing technology is so backward, there are steel bars, so you have to use the method of making steel in ten or ten, making ten or ten, making steel into steel wires with severely uneven thicknesses. But temporarily, once the steel mill is officially launched, you will get a large amount of steel products. This is the most expensive thing. If Song Jiu had not made gunpowder and let the ministers see the power, the court would probably not agree at all.

Also prepare some river sand and hard stones fried with gunpowder.

This is a big construction site.

Song Jiu looked around and first looked at whether the various materials were qualified. Song Jiu also knew that the court had spent a lot of money, but this was the relationship between fish and water. Without the court's support, the private sector would not be able to do so. If the court did not support it, the court would not get this benefit.

It quickly began to organize man-made blast furnaces, and the weather gradually became colder. When I woke up in the morning, a thick layer of white frost began to form outside. But there were too many people, so I first dug deep pits, lay a solid foundation, then built a scaffold with wooden rafts, stuffed it in with mud bags, and built a hexagonal platform, which was erected to the sky. The platform was nearly twenty feet, almost over sixty meters. Then hundreds of specially made thick steel bars were erected along the platform, and steel nets were laid on the top from below, with a total of sixteen layers.

.Song Jiu was afraid of working at high altitudes, and people would have something to do. He asked the officials to recruit a large amount of hay to lay around the platform. It was really useful. One person accidentally fell down and landed on the haystack. He suffered only a little bit of minor injuries. One minor injury and one death were different. Compared with this big event, life is not worthwhile, but if someone dies, it is unlucky, which will also make the craftsmen above worry. At this time, the craftsmen were not used to high altitude construction. A timid craftsman stood on the high scaffolding and was actually scared to tears.

Sixteen pillars and sixteen horizontal pillars, then the scaffolding was removed, the scaffolding was rebuilt outside, and concrete was started.

There are also affairs on the other side. The first is the large bellows, and the large blast furnace must have strong blowers. Song Jiu did some experiments in that house very early, and before construction started, he was developing them in real life. One is to change the current bellows from long to cylindrical shape, compress blind corners, and have enough wind pressure, without leaking air. The second is porous blowers. The third is to use the turbulent characteristics of the Bian River, which are used to make a row-type water wheel blower. This was something Song Jiu ran to a European donkey in his previous life and was lucky enough to see it. He had a good memory and was curious. He asked the principles and wrote them down. He learned a lot of knowledge in his previous life and saw a lot of knowledge, but many of them were definitely not used. There were people in the court. When he saw it, he said, "Our dynasty also has it." Song Jiu was surprised that later the official said it was different. It must be different. The hydraulic blowers of the Song Dynasty were much behind. What we need to do now is to make it practical and large from the laboratory.

Finally, it's the key, steel.

The steel filling method is an improvement, but whether it is to pour cooked iron into pig iron or pig iron into cooked iron, there are two problems that cannot be solved. Song Jiu almost screamed at that time. First, the molten iron is not a good carburizing agent, and the other is the earth's gravity. The molten iron will flow downward after melting. After cooling, the lower part of the billet has a high carbon content and a low carbon content in the upper part. Either repeatedly pour it, its plasticity will become very poor. Therefore, in the Ming Dynasty, it has been further improved, including the mud sealing iron filling method, the Sugang steel stir-frying method, and the Indian crucible steelmaking method.

Song Jiu didn't know these three methods, but he knew that there were still many disadvantages. In fact, he knew the principle, but it was not that complicated. The main principle was to make iron contain carbon. With a blast furnace, there would be cast iron of good quality, which would not work without this. Converter steelmaking was unrealistic in this era, but there was a way. With a cast iron of good quality, build a large carburizing kiln, and use cooked iron rods and charcoal to alternately stack them in the kiln. Charcoal must be used, otherwise China's coal will contain a large amount of sulfur, carbon permeation and sulfur will also permeate. Once the sulfur content exceeds the standard, steel will be unqualified. Then the fire will be kept in high-temperature reaction for four to seven days, and after being released, it will be forged and reduced thickness and removed impurities. It is excellent steel, at least better than any steel except for real steelmaking. And Song Jiu valued it the most is mass production and large-scale mass production.

As the progress of the project deepened, the court also fell into trouble at this time. Song Jiu had whatever he wanted, and at most he sent almost more than two thousand powerful soldiers to participate.

In fact, the sulfur that Song Jiu was worried about was that he used coke iron smelting, which was reduced by at least half the sulfur content of steelmaking by the past by the actual coal smelting iron. Unless charcoal was used, charcoal smelting iron smelting had more disadvantages, especially the temperature could not keep up.

There are constant problems, constant waste, and constant correction. If Song Jiu does not take charge personally, he will not know what kind of trouble will occur.

The weather is getting colder and colder because this cement has poor cold resistance and slow solidification. Song Jiu asked someone to ignite the carbonite around and raise a bonfire, forcibly increase the temperature of the surrounding area. Finally, as the blast furnace gets higher and higher, eight high platforms are built around it. A bonfire is set up again on the platform to force the temperature of the air. The effect is relatively poor, but increasing the temperature of five or six degrees can still be achieved. For this cement, it will be different from having these five or six degrees or not.

The money was used to fight the three corpses and the officials in the warehouse.

But the blast furnace is formed day by day, and then it is built with denser scaffolding and bricks. It is built layer by layer. Because the cement has not completely solidified and the wood and soil platform inside has not been removed, it will wait until all the blast furnaces are solidified and they will be slowly made out.

There were many people and great powers. A month later, just as a layer of melting ice was formed in the Bian River, a strange chimney finally stood on the bank of the Bian River.

I didn't dare to take the scaffolding made of bamboo, and I had to build some arrangements inside the furnace. I didn't dare to stop the coal bonfires around me, but I started to lift the mud and wood inside out. The blast furnace was theoretically completed.

Not far from the capital, so Zhao Kuangyin brought the ministers to watch.

It was not reported by Song Jiu. In fact, it would be better to take more than ten days to produce iron in the blast furnace, then make steel, smel out good iron, and make good steel. Let's look at it again. I don't know how much the imperial court has used, but I think it will not be less. Even the money from his main store has been used up long ago, but when I see the results, I feel that the money is worth it.

A large group of people came over, and Song Jiu and the officials greeted him.
Chapter completed!