Here in the state of Chu, a blast furnace with a capacity of fifteen cubic meters is larger than any blast furnace in other places, but if such a blast furnace is in the twenty-first century, hehe, it will be a joke. Pen & Fun & Pavilion www.biquge.info

If Lin Ze really builds such a blast furnace at that time, I believe it will soon be 'famous' throughout the country!

At present, blast furnaces below 200 cubic meters in China must be forced to shut down, while abroad, such as the Wa Kingdom, even 5,000 cubic meters of blast furnaces are already in use.

The technological progress is really too fast now!

Of course, the refining of the blast furnace does not mean that there is no technology at all, and there are still difficulties.

The blast furnace here in Chu State, when it was built, was directly built with clay or red bricks, and there was no big problem with the blast furnace built in this way, but the disadvantage was that the life span was extremely short.

The temperature is extremely high when making iron, and ordinary clay or red bricks cannot withstand much higher temperature, so the blast furnace established in this way can only be directly abandoned after being used for a period of time.

Lin Ze didn't want the blast furnace he built to be of such low quality, so he directly prepared to use high-grade refractories used in modern steelmaking furnaces in the lining of the blast furnace.

Don't look at these four words of modern blast furnace, you think that the technical content is extremely high, and the feudal society seems to be unable to get it at all, but in fact, this is not the case.

Modern high-grade refractories are extremely low-tech, and as long as the raw materials are found, they can be easily manufactured.

So what exactly is the high-grade refractory material used in modern blast furnaces?

Quite simply, it's actually high-alumina clay.

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

High-alumina clay was found, and all that remained was to make high-alumina clay into refractory bricks.

This is something that even 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 you need to increase the firepower, you have to have some blowers.

Modern blast furnaces are all special fans, with powerful horsepower, which are also very convenient and safe, but here in Chu State, the blowers used in the blast furnaces here 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 planks up and down, surrounded by folded leather, and when you use it, you can step on the blower one by one, which is not very efficient, and the other is a large wooden box, with a flap in the middle, and you can directly use manpower to push and pull the wooden blower in the middle.

The first type of organ-like bellows will deteriorate the leather after a long period of use, which can easily lead to danger.

You can fully imagine that when you are making iron, the blast furnace here is in need of family style, but because the blower is aging, it is too late to replace it for a while, at this time, there will inevitably be a shortage of air supply, and at that time, the blast furnace that is making iron may be fried.

And the blast furnace is really going to fry, the scarlet, the temperature of up to 1,000 degrees in the blast furnace will flow out directly, at this time, the workers near the blast furnace are not all burned into charcoal by these hot molten iron.

This is not only that, once the blast furnace explodes, the power is equivalent to a huge bomb, as long as people within a hundred meters of the blast furnace will be in danger of life, so don't look at the blower This thing seems to be very small and useless, in fact, it is very important when making iron.

Therefore, for the sake of safety, Lin Ze directly eliminated these organ-like blowers and directly replaced them with valve-sliding blowers, which are relatively safer, and, most importantly, such blowers can be powered by water wheels.

The force of the eccentric wheel is used to directly turn the rotary motion into reciprocating motion, and then provide a steady stream of power to pull the blower.

Because of the sufficiency of water power, Lin Ze directly arranged five air boxes and five air ducts around each blast furnace, and made three spare air boxes in case of accidents.

Replacing a hand-pulled blower is much easier and safer than an accordion blower.

Lin Ze also referred to some modern blast furnace technology, directly put the section of the air inlet before the last furnace and the blast furnace together, the air inlet is provided with a fire pool isolated from the air intake, which can be filled with charcoal or coal, used to add air, before the air enters the furnace, it is directly in the air intake, is heated to 800 to 1,000 degrees.

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

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

In addition to the huge body of the blast furnace, Lin Ze also used solid wood to build an independent maintenance tower with support points on the ground.

As for whether the maintenance tower built with wood in this way is sturdy, hehe, there are many kinds of trees on the Shenzhou Continent that are as strong as steel, so there is no need to worry about the quality of the maintenance tower built with wood in this way.

In addition, Lin Ze also uses chutes, pulleys and pulleys to form a furnace top feeding system, which greatly facilitates the filling of ironmaking, accelerates the speed of ironmaking, and reduces the risk of feeding.

Of course, the molten iron originally smelted by such a blast furnace was pig iron with high carbon content and many impurities, but such pig iron can actually be used to cast large iron parts, such as iron anchors, iron hammers, general agricultural tools, and so on.

Therefore, Lin Ze directly connected a groove outside the tap hole, which was usually closed and opened if necessary.

As soon as the trench is opened, the red-hot molten iron from the blast furnace is poured directly into the mold outside, and then it is cast into large iron parts.

Of course, there is really no problem with such pig iron being used to refine farm tools and the like, but if it is used to refine weapons, it is still a little worse, so Lin Ze still needs to smelt these pig iron into steel.

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

The shape of this iron stir-fry stove is a bit like a teacup of kung fu tea, with a large upper end and a small lower end, which is a reverberatory furnace type with flame and iron isolation. It is also built as a whole with refractory bricks used in the blast furnace, with a recess in the middle of the bottom of the hearth, surrounded by arched furnace walls, and the lower part is the combustion chamber, and the air inlet duct is at the bottom of the combustion chamber.

In fact, the structure of this iron oven can be seen as a three-story building, with the third and second floors isolated from each other, and a number of movable iron fences between the first and second floors.

When in use, the molten pig iron that has been connected is directly poured from the blast furnace to the third floor, and then the coal is directly spread on the second floor, and then ignited, so that the coal burns on the iron fence to heat the molten pig iron on the third floor.

When the combustion is almost enough, you can simply put the residue left after the coal is burned, by turning over the iron fence, so that the carbon slag will fall directly into the slag room on the first floor, and wait until all the carbon slag on the iron fence falls to the first floor, you can put the iron fence flat, and then, you can add coal to it from the coal inlet road that is inclined down 45 degrees.

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

The power used in the iron furnace is the same as that of the previous blast furnace ironmaking, which is also water-powered, but there is a difference between this and the blast furnace, which also has a high chimney on the side of the furnace to exhaust exhaust gases.

(Actually, Lin Ze wants to use modern machines to provide power and help make iron, but modern machines either need electricity, or diesel or gasoline or something, and Lin Ze really can't take out these things now, so Lin Ze can only use water power when making iron.)

Of course, there will be people here, didn't Lin Ze set up some wind turbines outside his house before, and after Lin Ze's research, these wind turbines have directly shrunk a lot and increased a lot, so in this case, isn't it possible to directly provide electricity?

Hehe, that's true, but, if you think about it, in a place like an ironworks, will the amount of electricity needed be a small amount?! Moreover, in a large factory like an ironworks, the number of wires that need to be arranged must be an astronomical amount, and Lin Ze would never have thought that he would come to the Shenzhou Continent before, where would he prepare so many wires.

Finally, and most importantly, Lin Ze didn't have any power maintenance workers on his hands. Since the ironworks are powered by electricity, they need some electrical maintenance workers to ensure that there are no problems with the transportation of electricity.

However, where is there any electricity maintenance workers in a feudal society like Chu State, and there are not enough power maintenance workers, you dare to directly electrify the ironworks with bare hands and feet?!

Therefore, although Lin Ze has some efficient wind power generation equipment in his hands, it is completely impossible to use it in a short period of time if he wants to use it in the ironworks. ）

In ancient China, there was a record of frying steel, the fried iron in the stir-fried iron furnace was stirred by manpower, and when the iron was stirred, there was always one or several strong men by the iron-frying furnace, holding a fried iron rod made of wrought iron in both hands, and constantly stirring the wrought iron rod back and forth in the stir-fried iron furnace with sweat like rain.

It is true that it is possible to smelt steel, but this is not only dangerous, but also extremely inefficient, and most importantly, the quality of the steel that is fried in this way is not high.

After all, manpower is limited, so constantly using wrought iron rods to fry the pig iron in the iron furnace, even the strongest people, can not support half an hour, and at this time, maybe the pig iron has just reacted to the most critical time, this time once the frying is stopped, the pig iron reaction will not be complete, resulting in the quality of steel is not optimal.

Therefore, whether it was for the safety of personnel or to improve the efficiency of steelmaking, Lin Ze directly introduced water power to help fry iron.