In Chu State, a blast furnace with a capacity of fifteen cubic meters is larger than any other blast furnace. However, if such a blast furnace was in the 21st century, hehe, that would be a joke.

If Lin Ze really builds such a blast furnace, he believes that he will soon be "famous" across the country!

Now, blast furnaces below 00 cubic meters must be shut down forcibly, while in foreign countries, such as Japan, it is even using 5,000 cubic meters of blast furnaces.

The technological progress is really fast now!

Of course, the refining of blast furnaces does not mean that there is no technology at all, and it is still difficult.

When constructing the blast furnaces in Chu State, they are directly built with clay or made of red bricks. There is no big problem with the blast furnaces built in this way, but the disadvantage is that their lifespan is extremely short.

The temperature is extremely high when smelting iron, and ordinary clay or red bricks cannot withstand much temperature. After using it for a period of time, the blast furnace built in this way can only be directly discarded.

Lin Ze didn't want the blast furnace he built himself to have such low quality, so he directly prepared to use advanced refractory materials used in the lining of the blast furnace, which are only used in modern steelmaking furnaces.

Although we look at the four words of modern blast furnaces, we think that the technical content is extremely high and the feudal society seems to be unable to get it at all. In fact, this is not the case.

Modern high-quality refractory materials have extremely low technical content, and as long as the raw materials are found, they can be easily manufactured.

So what are the high-end refractory materials used in modern blast furnaces?

It's very simple, it's actually high alumina clay.

This thing has a high alumina content. After grinding, it is refractory cement and is directly pressed into bricks and can be fired into refractory bricks at a high temperature of 1300 degrees.

High alumina clay was found, and the rest was to make high alumina clay into refractory bricks.

This is something that children can do.

In addition to the replacement of refractory materials, Lin Ze also made some changes to the blower of the steelmaking furnace.

When smelting iron, because the firepower is needed, we need some blowers.

Modern blast furnaces are all dedicated fans, which are powerful, convenient and safe. However, in Chu State, the blowers used in blast furnaces are still very old blowers, which are the simplest bellows made of wood.

There are two types of such bellows. One is like an accordion, with wooden boards on the top and bottom, and folded leather around them. When used, you can step on the blower one after another. This is not efficient. The other is a large wooden box with a shutter in the middle, and people directly use human power to push and pull the puller blower in the middle.

The first organ-like bellows will be used for a long time, and the leather will age, which will easily lead to danger.

You can completely imagine that when you are smelting iron, the blast furnace needs family style. However, because the blower is aging and it is too late to replace it for a while, there will inevitably be insufficient air supply. At that time, the blast furnace that is smelting iron may explode the furnace.

When the blast furnace is really going to be a fire furnace, the scarlet and hot molten iron inside the blast furnace with a temperature of up to thousands of degrees will flow out directly. At this time, the workers near the blast furnace may not be burned into coke by the hot molten iron.

This is not all. Once the blast furnace explodes, its power is equivalent to a huge bomb. As long as people within a range of hundreds of meters around the blast furnace, they will be in danger of life. So, although the blower seems to be very small and useless, it is very important when smelting iron.

Therefore, for the sake of safety, Lin Ze directly eliminated these organ-like blowers and replaced them with the blower push-pull blowers. Such blowers are relatively safer, and, most importantly, such blowers can be powered by water trucks.

Using the force of the eccentric wheel, the rotational movement is directly turned into reciprocating movement, thereby providing a continuous stream of power and pulling the blower.

Because of the sufficient hydraulic power, Lin Ze directly arranged five bellows and five air ducts around each blast furnace, and made three spare bellows to prevent accidents from happening at that time.

Replacing a hand-pull blower is easier and safer than an organ-style blower.

Lin Ze also referred to some modern blast furnace techniques to directly put the section in front of the air inlet into the furnace and the blast furnace together. There is a fire pool isolated from the air inlet under the air inlet, which can be filled with charcoal or coal, so that the air can be heated directly in the air inlet before entering the furnace to 800 to 1,000 degrees.

Air preheating is the most critical step in improving the efficiency of ironmaking in modern steel production. This technology was invented in modern times, and in ancient times, there was no technology to pay attention to.

Because this technology is extremely simple, Lin Ze moved directly to the blast furnace.

In addition to the huge furnace body of the blast furnace, Lin Ze also used solid wood to build a top-notch maintenance tower with support points falling on the ground.

As for whether the maintenance tower built with wood is solid, haha, there are many kinds of trees on the mainland of China as hard as steel, so don’t worry about the quality of the maintenance tower built with wood like this.

In addition, Lin Ze also used chutes, pulleys and pulleys to form a furnace top feeding system, which greatly facilitates the filler during iron smelting, speeds up the iron smelting speed, and reduces the risk during feeding.

Of course, the molten iron initially produced by such blast furnaces was pig iron with high carbon content and many impurities. However, such pig iron can actually be used to cast large iron parts, such as iron anchors, hammers, general agricultural tools, etc.

Therefore, Lin Ze directly connected a groove outside the iron outlet, which is usually closed and opened if necessary.

Once this groove is opened, the red iron burned in the blast furnace will be directly injected into the mold outside, and then cast into large iron parts.

Of course, there is no problem with such pig iron being used to refine agricultural tools, but it is still a little bit worse when used to refine weapons, so Lin Ze still needs to refine these pig iron into steel.

To this end, Lin Ze built a large iron stir-frying furnace directly next to the blast furnace to smelify pig iron into steel.

The shape of this iron-frying furnace is a bit like a tea cup of Kung Fu tea. It has a large upper end and a small lower end, and is a reflective furnace type separated by flame and iron. It is also built with refractory bricks used in the blast furnace. The bottom of the furnace bed is sunken in the middle, surrounded by an arched furnace wall, the lower part is a combustion chamber, and the air inlet duct is at the bottom of the combustion chamber.

In fact, the structure of this iron frying furnace can be regarded as a three-story building, with the third and second floors isolated from each other. There are multiple reversible iron fences between the first and second floors.

When in use, the pig iron has been connected directly from the blast furnace to the third floor, and then directly lay coal on the second floor, then ignite it, let the coal burn on the iron fence, and heat the pig iron on the third floor.

After the combustion is almost the same and enough, you can simply burn the residue left after the coal is burned. By flipping through the iron fence, the charcoal slag falls directly into the slag removal chamber on the first floor. After all the carbon slag on the iron fence falls to the first floor, you can lay the iron fence flat, and then add coal to it from the coal inlet channel 45 degrees downward.

It can be said that the design of this iron stir-frying furnace is extremely superb, and the process of iron stir-frying is extremely simple and effective.

The power used for the iron stir-frying furnace is the same as before, and it also uses hydraulic blowing. However, there is a little difference between this and the blast furnace. A high chimney is also built on the side of the iron stir-frying furnace to discharge waste gas.

(In fact, Lin Ze wanted to use modern machines to provide power to help iron smelting. However, modern machines do not require electricity, diesel or gasoline, and Lin Ze really can't take out these things now, so when Lin Ze smelting iron, he could only use hydraulic power.

Of course, some people will also say here that Lin Ze had set up some wind turbines outside his house before. Moreover, after Lin Ze's research, these wind turbines were reduced a lot and their power increased a lot. In this way, can we directly provide electricity?

Haha, it is true, but think about it, will the electricity required in places like an ironworks be a small amount?! Moreover, the number of wires needed for large factories like an ironworks must be astronomical. Lin Ze would not have thought that he would come to China mainland, so how could he prepare so many wires?

Finally, and most importantly, Lin Ze does not have any power maintenance workers. Since the ironworks use electricity as power, they need some power maintenance workers to ensure that there will be no problems with the power transportation.

However, in feudal society like Chu, where are there any electricity repair workers? There are not enough electricity repair workers. Do you dare to directly connect electricity to the ironworks barefoot like this?!

Therefore, although Lin Ze has some efficient wind power equipment in his hands, it is completely impossible to use it in a short time if he wants to use it in an iron plant.)

There were records about steel stir-frying in ancient China. The iron stir-frying in the iron stir-frying furnace was stir-frying with human power. When stir-frying, there were always a strong man next to the iron stir-frying furnace. He held a stir-frying iron rod made of cooked iron in his hands, and sweated heavily and stirred the cooked iron rod back and forth in the iron stir-frying furnace.

This is indeed possible to make steel, but this is not only dangerous, but also has extremely low efficiency. Most importantly, the quality of the steel produced in this way is not high.

After all, manpower is limited. The pig iron in the iron furnace is the strongest person and can't support it for half an hour. At this time, perhaps the pig iron has just reacted to the most important time. Once the frying is stopped, the pig iron will not react completely, which will lead to the quality of the steel not being optimal.
Chapter completed!