Super Chief

　　 It is really impossible to say whether it was right or wrong in the "big, steel and steel" movement of China.

　　 From the perspective of future generations, the movement that swept across the country was wrong. It was a waste of money for the people and severely damaged the fragile industrial foundation at that time.

　　 But from the perspective of the time, this matter was not wrong, otherwise it would not have formed such a nationwide steelmaking situation.

　　Of course, that matter was too far away from Shixiong, and he was unwilling to judge whether it was right or wrong, and he said he didn't have the right to judge it. He can only say that it was an inappropriate move made by the people from the top to the ordinary people because they did not fully realize their technological level.

　　 But thanks to that big steelmaking movement, Shi Xiong has seen earthen blast furnaces left over in some remote mountain villages in the province. At that time, a retired old leader of the museum once said that these leftover earth blast furnaces had witnessed the changes of an era and were the condensation of the wisdom of the people at that time. There is nothing wrong with earth blast furnaces, so they should not be destroyed by the wind and sun.

　　 It was precisely with the instructions of this old leader that Shi Xiong, who had just joined the work for a short time, followed his master to maintain and repair the earthen blast furnaces, and figured out the structure of these earthen blast furnaces.

　　 In fact, even the modern iron-making blast furnaces of later generations, their structural principles are not so complicated, and they are even worse than the earth kilns for coking. Although these earthen blast furnaces were built with earthen methods, the principle and structure are no different from modern ironmaking blast furnaces.

It is a nearly cylindrical cylinder with a diameter of about two and a half meters and a height of more than five meters with stones or red bricks mixed with soil on the outside. It becomes thinner as it goes up, and is narrowed and capped at the top of the furnace throat. , And then reserve the gas outlet and feed inlet. The inside of the furnace is pasted with a thick layer of refractory clay. Some soil blast furnaces do not have refractory clay, so they simply use mud paste, the main purpose is to prevent high temperatures.

　　In the position of the joint between the hearth and the hearth, there are reserved oblique upward air inlets. The wind produced by the wind box or blower will be injected into the hearth from these inlets to accelerate the combustion of coke in the blast furnace.

At the bottom of the hearth of the blast furnace, there are two discharge ports on the top and bottom. The bottom one at one end is dedicated for tapping molten iron, and the slightly higher part at the other end is dedicated for tapping slag. Slag mouth.

When making iron, coke, iron ore, and limestone are placed in the hearth and hearth according to a certain proportion, and then ignited. The air box or blower is used to continuously blow air into the hearth. As the furnace temperature continues to increase, the iron The ore and limestone will melt into molten iron containing waste residue.

　　Because the density of molten iron is extremely high, it can exceed 7, and the density is much greater than those of waste slag, so when molten iron is produced, the waste **** produced by ironmaking floats on the molten iron.

　　This creates a situation where the molten iron is on the bottom and the waste **** is on the top.

　　 Therefore, the tap hole is at the bottom, and the **** tap hole is one piece higher than the tap hole. In this way, the waste **** produced by ironmaking will flow out from the **** outlet, and the pure molten iron will flow out from the lowest tap hole.

　　 This kind of earthen blast furnace is a bell-type blast furnace. It is a kind of earth blast furnace whose coke consumption rate is far lower than that of cupola blast furnaces, and its iron tapping rate is also much higher than that of cupola blast furnaces. When iron and steel was smelted, some large-scale iron smelting sites mostly used this kind of earthen blast furnace.

　　 This thing is not difficult for Shi Xiong to be sincere, just like a gourd painting.

　　 Although the earth blast furnace built in this way is extremely primitive, it is the most advanced in this era. Even in Europe, there is no such hood blast furnace.

　　 Of course, given the current strength of the Gaoshu tribe, there is no need to build such a large earth blast furnace. Although in the division of blast furnaces, those with less than one hundred cubic meters are even small blast furnaces, but those small blast furnaces are too large for the current Gaoshu tribe.

　　 So Shixiong plans to build an earthen furnace that is smaller than the small blast furnace. After all, building too big is a waste.

The blast furnace is not difficult for the people of the Gaoshu tribe, even if they have never done this kind of muddy work before, but this thing is really not difficult, plus they used to build a stone house in order to make refractory bricks. , So it's nothing to set up a small blast furnace under Shixiong's guidance this time.

　　 While building the blast furnace, Shixiong used the unburned coal left over from the coking process.

　　The iron ore blocks dug out from the Bison Mountain are relatively large, and the smelting efficiency is too low when directly put into the blast furnace, so it must be crushed.

　　 In the high tree tribe, which has no crushing machinery or even hammers, the best way to crush these large pieces of iron ore is the primitive method of burning it first and then pouring cold water.

　　 is to put the iron ore into the burning coal to heat it. When the iron ore is very hot, it is pulled out with a stone rod, and then watered upward. Under the heat expansion and cold contraction, the iron ore will fragment by itself.

　　 Before the invention of medicine, almost all rocks were mined in this primitive way in both the West and the East.

While building the blast furnace and crushing iron ore, the other tribes were not idle~www.NovelMTL.com~ Some tribes, mainly women, continued to open up wasteland and plow the land under the leadership of Sheep-tail flowers, while another group of tribes Under the leadership of Jiao and Gao Niu, he began to frequently enter the Bison Mountain and the wilderness to catch bison.

　　Wolf's tail failed twice in the hands of the stone bear, each time with a gray-headed face, so his prestige in the tribe has been greatly reduced, and he is no longer suitable for leading the tribe's warriors in battle or hunting.

　　Because the purpose is not to kill the bison, and the method of ambushing to catch the bison, the capture of the bison went very smoothly.

Usually there are more than twenty people divided into two groups. After seeing the lonely bison, one group began to sneak into the vicinity to set up ambushes. After the set up was completed, the other group began to ride horses and brag horns. The horn to frighten these bison.

　　 Waiting for the lonely bison to plunge into the ambushing circle, the oncoming fishing nets will make these vigorous bison empty and useless.

　　 When these fighters are good, they can even catch three bisons a day. Even when they are bad luck, they can catch one bison at least a day.

　　 In the four short days from the construction of the earth blast furnace to the completion of the earth blast furnace, there have been eight more bisons in the tribe, of which six are cows and two bulls.

　　 I have to say that bulls are really more difficult to deal with than cows. When capturing these two bulls, two warriors in the tribe almost died under the horns.

In order to get the eight new bison down as quickly as possible, Shi Xiong took down another pair of tongs and made eight bull nose rings. With the help of the tribe, he mounted these bison one by one. A bull nose ring.

　　 Not to mention, after the training of these nine bisons, Shi Xiong is now a master at putting on the nose ring!